TC GROUP LLC
SC 13D, 1997-10-24
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<PAGE>

                                    UNITED STATES
                          SECURITIES AND EXCHANGE COMMISSION
                               WASHINGTON, D.C.  20549


                                     SCHEDULE 13D


                      UNDER THE SECURITIES EXCHANGE ACT OF 1934


                            INSIGHT HEALTH SERVICES CORP.
- --------------------------------------------------------------------------------
                                   (Name of Issuer)

                       Common Stock, $0.001 Par Value Per Share
- --------------------------------------------------------------------------------
                             Title of Class of Securities


                                     45766Q 10 1
- --------------------------------------------------------------------------------
                                    (CUSIP Number)


     David W. Dupree, The Carlyle Group, 1001 Pennsylvania Ave., N.W., Suite 220
South, Washington, D.C.  20004, (202) 347-2626  Copies to  John F. Olson, Esq.,
Gibson, Dunn & Crutcher LLP, 1050 Connecticut Ave., N.W., Washington, D.C. 
20036, (202) 955-8522
- --------------------------------------------------------------------------------
(Name, Address and Telephone Number of Person Authorized to Receive Notices and
Communications)


                                   October 14, 1997
- --------------------------------------------------------------------------------
               (Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13F to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box .

Check the following box if a fee is being paid with the statement .  (A fee is
not required only if the reporting person:  (1) has a previous statement on file
reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.)
(See Rule 13d-7.)

NOTE:  Six copies of this statement, including all exhibits, should be filed
with the Commission.  See Rule 13d-1(a) for other parties to whom copies are to
be sent.

* The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).

                              Page 1 of 22

<PAGE>

CUSIP No. 45766Q 10 1               13D                 Page 2 of 22 Pages


- -------------------------------------------------------------------------------
 (1) Names of Reporting Persons.
     S.S. or I.R.S. Identification Nos. of Above Persons
     Carlyle Partners II, L.P.
     IRS Identification No.: 51-0357731
- -------------------------------------------------------------------------------
 (2) Check the Appropriate Box if a Member                           (a)  / /
     of a Group*                                                     (b)  /X/
- -------------------------------------------------------------------------------
 (3) SEC Use Only

- -------------------------------------------------------------------------------
 (4) Source of Funds*
     AF
- -------------------------------------------------------------------------------
 (5) Check if Disclosure of Legal Proceedings is Required Pursuant to
     Items 2(d) or 2(e)                                                   / /
- -------------------------------------------------------------------------------
 (6) Citizenship or Place of Organization
     Delaware
- -------------------------------------------------------------------------------
Number of Shares              (7) Sole Voting Power
 Beneficially Owned               0
 by Each Reporting           --------------------------------------------------
 Person With                  (8) Shared Voting Power
                                  3,235,075
                             --------------------------------------------------
                              (9) Sole Dispositive Power
                                  1,062,105
                             --------------------------------------------------
                             (10) Shared Dispositive Power
                                  0
- -------------------------------------------------------------------------------
(11) Aggregate Amount Beneficially Owned by Each Reporting Person
     3,235,075
- -------------------------------------------------------------------------------
(12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares*   / /
- -------------------------------------------------------------------------------
(13) Percent of Class Represented by Amount in Row (11)
     54.4%
- -------------------------------------------------------------------------------
(14) Type of Reporting Person*
     PN
- -------------------------------------------------------------------------------
                    *SEE INSTRUCTION BEFORE FILLING OUT!

<PAGE>

CUSIP No. 45766Q 10 1               13D                 Page 3 of 22 Pages


- -------------------------------------------------------------------------------
 (1) Names of Reporting Persons.
     S.S. or I.R.S. Identification Nos. of Above Persons
     Carlyle Partners III, L.P.
     IRS Identification No.: 51-0369721
- -------------------------------------------------------------------------------
 (2) Check the Appropriate Box if a Member                           (a)  / /
     of a Group*                                                     (b)  /X/
- -------------------------------------------------------------------------------
 (3) SEC Use Only

- -------------------------------------------------------------------------------
 (4) Source of Funds*
     AF
- -------------------------------------------------------------------------------
 (5) Check if Disclosure of Legal Proceedings is Required Pursuant to
     Items 2(d) or 2(e)                                                   / /
- -------------------------------------------------------------------------------
 (6) Citizenship or Place of Organization
     Delaware
- -------------------------------------------------------------------------------
Number of Shares              (7) Sole Voting Power
 Beneficially Owned               0
 by Each Reporting           --------------------------------------------------
 Person With                  (8) Shared Voting Power
                                  3,235,075
                             --------------------------------------------------
                              (9) Sole Dispositive Power
                                  48,478
                             --------------------------------------------------
                             (10) Shared Dispositive Power
                                  0
- -------------------------------------------------------------------------------
(11) Aggregate Amount Beneficially Owned by Each Reporting Person
     3,235,075
- -------------------------------------------------------------------------------
(12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares*   / /
- -------------------------------------------------------------------------------
(13) Percent of Class Represented by Amount in Row (11)
     54.4%
- -------------------------------------------------------------------------------
(14) Type of Reporting Person*
     PN
- -------------------------------------------------------------------------------
                    *SEE INSTRUCTION BEFORE FILLING OUT!

<PAGE>

CUSIP No. 45766Q 10 1               13D                 Page 4 of 22 Pages


- -------------------------------------------------------------------------------
 (1) Names of Reporting Persons.
     S.S. or I.R.S. Identification Nos. of Above Persons
     Carlyle International Partners II, L.P.
     IRS Identification No.: N/A
- -------------------------------------------------------------------------------
 (2) Check the Appropriate Box if a Member                           (a)  / /
     of a Group*                                                     (b)  /X/
- -------------------------------------------------------------------------------
 (3) SEC Use Only

- -------------------------------------------------------------------------------
 (4) Source of Funds*
     AF
- -------------------------------------------------------------------------------
 (5) Check if Disclosure of Legal Proceedings is Required Pursuant to
     Items 2(d) or 2(e)                                                   / /
- -------------------------------------------------------------------------------
 (6) Citizenship or Place of Organization
     Cayman Islands
- -------------------------------------------------------------------------------
Number of Shares              (7) Sole Voting Power
 Beneficially Owned               0
 by Each Reporting           --------------------------------------------------
 Person With                  (8) Shared Voting Power
                                  896,526
                             --------------------------------------------------
                              (9) Sole Dispositive Power
                                  896,526
                             --------------------------------------------------
                             (10) Shared Dispositive Power
                                  0
- -------------------------------------------------------------------------------
(11) Aggregate Amount Beneficially Owned by Each Reporting Person
     896,526
- -------------------------------------------------------------------------------
(12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares*   / /
- -------------------------------------------------------------------------------
(13) Percent of Class Represented by Amount in Row (11)
     15.1%
- -------------------------------------------------------------------------------
(14) Type of Reporting Person*
     PN
- -------------------------------------------------------------------------------
                    *SEE INSTRUCTION BEFORE FILLING OUT!

<PAGE>

CUSIP No. 45766Q 10 1               13D                 Page 5 of 22 Pages


- -------------------------------------------------------------------------------
 (1) Names of Reporting Persons.
     S.S. or I.R.S. Identification Nos. of Above Persons
     Carlyle International Partners III, L.P.
     IRS Identification No.: N/A
- -------------------------------------------------------------------------------
 (2) Check the Appropriate Box if a Member                           (a)  / /
     of a Group*                                                     (b)  /X/
- -------------------------------------------------------------------------------
 (3) SEC Use Only

- -------------------------------------------------------------------------------
 (4) Source of Funds*
     AF
- -------------------------------------------------------------------------------
 (5) Check if Disclosure of Legal Proceedings is Required Pursuant to
     Items 2(d) or 2(e)                                                   / /
- -------------------------------------------------------------------------------
 (6) Citizenship or Place of Organization
     Cayman Islands
- -------------------------------------------------------------------------------
Number of Shares              (7) Sole Voting Power
 Beneficially Owned               0
 by Each Reporting           --------------------------------------------------
 Person With                  (8) Shared Voting Power
                                  48,304
                             --------------------------------------------------
                              (9) Sole Dispositive Power
                                  48,304
                             --------------------------------------------------
                             (10) Shared Dispositive Power
                                  0
- -------------------------------------------------------------------------------
(11) Aggregate Amount Beneficially Owned by Each Reporting Person
     48,304
- -------------------------------------------------------------------------------
(12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares*   / /
- -------------------------------------------------------------------------------
(13) Percent of Class Represented by Amount in Row (11)
     0.8%
- -------------------------------------------------------------------------------
(14) Type of Reporting Person*
     PN
- -------------------------------------------------------------------------------
                    *SEE INSTRUCTION BEFORE FILLING OUT!

<PAGE>

CUSIP No. 45766Q 10 1               13D                 Page 6 of 22 Pages


- -------------------------------------------------------------------------------
 (1) Names of Reporting Persons.
     S.S. or I.R.S. Identification Nos. of Above Persons
     C/S International Partners
     IRS Identification No.: N/A
- -------------------------------------------------------------------------------
 (2) Check the Appropriate Box if a Member                           (a)  / /
     of a Group*                                                     (b)  /X/
- -------------------------------------------------------------------------------
 (3) SEC Use Only

- -------------------------------------------------------------------------------
 (4) Source of Funds*
     AF
- -------------------------------------------------------------------------------
 (5) Check if Disclosure of Legal Proceedings is Required Pursuant to
     Items 2(d) or 2(e)                                                   / /
- -------------------------------------------------------------------------------
 (6) Citizenship or Place of Organization
     Cayman Islands
- -------------------------------------------------------------------------------
Number of Shares              (7) Sole Voting Power
 Beneficially Owned               0
 by Each Reporting           --------------------------------------------------
 Person With                  (8) Shared Voting Power
                                  201,857
                             --------------------------------------------------
                              (9) Sole Dispositive Power
                                  201,857
                             --------------------------------------------------
                             (10) Shared Dispositive Power
                                  0
- -------------------------------------------------------------------------------
(11) Aggregate Amount Beneficially Owned by Each Reporting Person
     201,857
- -------------------------------------------------------------------------------
(12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares*   / /
- -------------------------------------------------------------------------------
(13) Percent of Class Represented by Amount in Row (11)
     3.4%
- -------------------------------------------------------------------------------
(14) Type of Reporting Person*
     PN
- -------------------------------------------------------------------------------
                    *SEE INSTRUCTION BEFORE FILLING OUT!

<PAGE>

CUSIP No. 45766Q 10 1               13D                 Page 7 of 22 Pages


- -------------------------------------------------------------------------------
 (1) Names of Reporting Persons.
     S.S. or I.R.S. Identification Nos. of Above Persons
     Carlyle Investment Group, L.P.
     IRS Identification No.: 51-0357730
- -------------------------------------------------------------------------------
 (2) Check the Appropriate Box if a Member                           (a)  / /
     of a Group*                                                     (b)  /X/
- -------------------------------------------------------------------------------
 (3) SEC Use Only

- -------------------------------------------------------------------------------
 (4) Source of Funds*
     AF
- -------------------------------------------------------------------------------
 (5) Check if Disclosure of Legal Proceedings is Required Pursuant to
     Items 2(d) or 2(e)                                                   / /
- -------------------------------------------------------------------------------
 (6) Citizenship or Place of Organization
     Delaware
- -------------------------------------------------------------------------------
Number of Shares              (7) Sole Voting Power
 Beneficially Owned               0
 by Each Reporting           --------------------------------------------------
 Person With                  (8) Shared Voting Power
                                  1,115
                             --------------------------------------------------
                              (9) Sole Dispositive Power
                                  1,115
                             --------------------------------------------------
                             (10) Shared Dispositive Power
                                  0
- -------------------------------------------------------------------------------
(11) Aggregate Amount Beneficially Owned by Each Reporting Person
     1,115
- -------------------------------------------------------------------------------
(12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares*   / /
- -------------------------------------------------------------------------------
(13) Percent of Class Represented by Amount in Row (11)
     0.0%
- -------------------------------------------------------------------------------
(14) Type of Reporting Person*
     PN
- -------------------------------------------------------------------------------
                    *SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>

CUSIP No. 45766Q 10 1               13D                 Page 8 of 22 Pages


- -------------------------------------------------------------------------------
 (1) Names of Reporting Persons.
     S.S. or I.R.S. Identification Nos. of Above Persons
     Carlyle-Insight Partners, L.P.
     IRS Identification No.: Application Pending
- -------------------------------------------------------------------------------
 (2) Check the Appropriate Box if a Member                           (a)  / /
     of a Group*                                                     (b)  /X/
- -------------------------------------------------------------------------------
 (3) SEC Use Only

- -------------------------------------------------------------------------------
 (4) Source of Funds*
     AF
- -------------------------------------------------------------------------------
 (5) Check if Disclosure of Legal Proceedings is Required Pursuant to
     Items 2(d) or 2(e)                                                   / /
- -------------------------------------------------------------------------------
 (6) Citizenship or Place of Organization
     Delaware
- -------------------------------------------------------------------------------
Number of Shares              (7) Sole Voting Power
 Beneficially Owned               0
 by Each Reporting           --------------------------------------------------
 Person With                  (8) Shared Voting Power
                                  3,235,075
                             --------------------------------------------------
                              (9) Sole Dispositive Power
                                  411,676
                             --------------------------------------------------
                             (10) Shared Dispositive Power
                                  0
- -------------------------------------------------------------------------------
(11) Aggregate Amount Beneficially Owned by Each Reporting Person
     3,235,075
- -------------------------------------------------------------------------------
(12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares*   / /
- -------------------------------------------------------------------------------
(13) Percent of Class Represented by Amount in Row (11)
     54.4%
- -------------------------------------------------------------------------------
(14) Type of Reporting Person*
     PN
- -------------------------------------------------------------------------------
                    *SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>

CUSIP No. 45766Q 10 1               13D                 Page 9 of 22 Pages


- -------------------------------------------------------------------------------
 (1) Names of Reporting Persons.
     S.S. or I.R.S. Identification Nos. of Above Persons
     Carlyle-Insight International Partners, L.P.
     IRS Identification No.: N/A
- -------------------------------------------------------------------------------
 (2) Check the Appropriate Box if a Member                           (a)  / /
     of a Group*                                                     (b)  /X/
- -------------------------------------------------------------------------------
 (3) SEC Use Only

- -------------------------------------------------------------------------------
 (4) Source of Funds*
     AF
- -------------------------------------------------------------------------------
 (5) Check if Disclosure of Legal Proceedings is Required Pursuant to
     Items 2(d) or 2(e)                                                   / /
- -------------------------------------------------------------------------------
 (6) Citizenship or Place of Organization
     Cayman Islands
- -------------------------------------------------------------------------------
Number of Shares              (7) Sole Voting Power
 Beneficially Owned               0
 by Each Reporting           --------------------------------------------------
 Person With                  (8) Shared Voting Power
                                  118,902
                             --------------------------------------------------
                              (9) Sole Dispositive Power
                                  118,902
                             --------------------------------------------------
                             (10) Shared Dispositive Power
                                  0
- -------------------------------------------------------------------------------
(11) Aggregate Amount Beneficially Owned by Each Reporting Person
            118,902
- -------------------------------------------------------------------------------
(12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares*   / /
- -------------------------------------------------------------------------------
(13) Percent of Class Represented by Amount in Row (11)
     2.0%
- -------------------------------------------------------------------------------
(14) Type of Reporting Person*
     PN
- -------------------------------------------------------------------------------
                    *SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>

CUSIP No. 45766Q 10 1               13D                 Page 10 of 22 Pages


- -------------------------------------------------------------------------------
 (1) Names of Reporting Persons.
     S.S. or I.R.S. Identification Nos. of Above Persons
     Carlyle Investment Management, L.L.C.
     IRS Identification No.: 52-1988385
- -------------------------------------------------------------------------------
 (2) Check the Appropriate Box if a Member                           (a)  / /
     of a Group*                                                     (b)  /X/
- -------------------------------------------------------------------------------
 (3) SEC Use Only

- -------------------------------------------------------------------------------
 (4) Source of Funds*
     00
- -------------------------------------------------------------------------------
 (5) Check if Disclosure of Legal Proceedings is Required Pursuant to
     Items 2(d) or 2(e)                                                   / /
- -------------------------------------------------------------------------------
 (6) Citizenship or Place of Organization
     Delaware
- -------------------------------------------------------------------------------
Number of Shares              (7) Sole Voting Power
 Beneficially Owned               0
 by Each Reporting           --------------------------------------------------
 Person With                  (8) Shared Voting Power
                                  446,404
                             --------------------------------------------------
                              (9) Sole Dispositive Power
                                  446,404
                             --------------------------------------------------
                             (10) Shared Dispositive Power
                                  0
- -------------------------------------------------------------------------------
(11) Aggregate Amount Beneficially Owned by Each Reporting Person
     446,404
- -------------------------------------------------------------------------------
(12) Check if the Aggregate Amount in Row (11) Excludes Certain Shares*   / /
- -------------------------------------------------------------------------------
(13) Percent of Class Represented by Amount in Row (11)
     7.5%
- -------------------------------------------------------------------------------
(14) Type of Reporting Person*
     00
     * Carlyle Investment Management L.L.C. is a limited liability company
       organized under the laws of the State of Delaware.
- -------------------------------------------------------------------------------
                    *SEE INSTRUCTION BEFORE FILLING OUT!

<PAGE>
                                                                  Page 11 of 22

- -------------------------------------------------------------------------------
1     NAME OF REPORTING PERSON
      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
      TC Group, L.L.C.
      IRS Identification No.:  54-1686957
- -------------------------------------------------------------------------------
2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*               (a) / /
                                                                      (b) /X/
- -------------------------------------------------------------------------------
3     SEC USE ONLY
- -------------------------------------------------------------------------------
4     SOURCE OF FUNDS*
      AF
- -------------------------------------------------------------------------------
5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT
      TO ITEMS 2(d) OR 2(e)                  / /
- -------------------------------------------------------------------------------
6     CITIZENSHIP OR PLACE OF ORGANIZATION
      Delaware
- -------------------------------------------------------------------------------
                         7     SOLE VOTING POWER
                               0
        NUMBER OF        ------------------------------------------------------
         SHARES          8     SHARED VOTING POWER
     BENEFICIALLY              3,235,075
       OWNED BY          ------------------------------------------------------
          EACH           9     SOLE DISPOSITIVE POWER
        REPORTING              0
         PERSON          ------------------------------------------------------
          WITH           10    SHARED DISPOSITIVE POWER
                               3,235,075
- -------------------------------------------------------------------------------
11     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
       3,235,075
- -------------------------------------------------------------------------------
12     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
       CERTAIN SHARES*          / /
- -------------------------------------------------------------------------------
13     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
       54.37%
- -------------------------------------------------------------------------------
14     TYPE OF REPORTING PERSON *
       OO
       * TC Group, L.L.C. is a limited liability company organized under the
         laws of the State of Delaware.
- -------------------------------------------------------------------------------

<PAGE>
CUSIP No.  45766Q 10 1                                           Page 12 of 22



ITEM 1.  SECURITY AND ISSUER

    The title of the class of equity securities to which this Schedule 13D
relates is the Common Stock, par value $.001 per share (the "Common Stock"), of
InSight Health Services Corp., a Delaware corporation (the "Company").  The
address of the Company is 4400 MacArthur Blvd., Suite 800, Newport Beach, CA 
92660.

ITEM 2.  IDENTITY AND BACKGROUND

    (a)-(c), (f).  The names of the persons filing this Schedule are: (i) 
Carlyle Partners II, L.P. ("CP II"), a Delaware limited partnership; (ii) 
Carlyle Partners III, L.P. ("CP III"), a Delaware limited partnership; (iii) 
Carlyle International Partners II L.P. ("CIP II"), a Cayman Islands exempted 
limited partnership; (iv) Carlyle International Partners III L.P. ("CIP 
III"), a Cayman Islands exempted limited partnership; (v) C/S International 
Partners ("C/S"), a Cayman Islands general partnership; (vi) Carlyle 
Investment Group, L.P. ("CIG"), a Delaware limited partnership; (vii) 
Carlyle-InSight Partners, L.P. ("C-IP"), a Delaware limited partnership; 
(viii) Carlyle-InSight International Partners, L.P. ("C-IIP"), a Cayman 
Islands exempted limited partnership; (CP II, CP III, CIP II, CIP III, C/S, 
CIG, C-IP and C-IIP, collectively, the "Purchasers"); (ix) TC Group, L.L.C. 
("TC Group"), a Delaware limited liability company doing business as The 
Carlyle Group; and (x) Carlyle Investment Management, L.L.C. ("CIM"), a 
Delaware limited liability company (the Purchasers, CIM, TC Group and TCG, 
collectively, the "Reporting Persons").

    TC Group, L.L.C. ("TC Group"), a Delaware limited liability company doing 
business as The Carlyle Group, is the sole general partner of CP II, CP III, 
CIG and C-IP.  TC Group is the sole managing general partner, and Carlyle 
Investment Administration Limited, a Cayman Islands exempted company ("CIA"), 
is the administrative general partner, of CIP II, CIP III and C-IIP.  TC 
Group is the sole managing general partner and Soros Capital Offshore 
Partners LDC, a Cayman Islands limited duration company ("SCOP"), is 
co-general partner of C/S.  CIM acts as investment advisor and manager with 
authority and responsibility to invest certain assets of the Florida 
Retirement System Trust Fund (the "Fund"), a tax-exempt entity under Section 
401(a) of the Internal Revenue Code of 1986, as amended, on behalf of the 
State Board of Administration of Florida (the "SBA").  William E. Conway, 
Jr., Daniel A. D'Aniello and David M. Rubenstein (collectively the "CIM 
Principals") are the executive officers and managing members of CIM.  Each of 
the CIM Principals is a citizen and resident of the United States.

    TCG Holdings, L.L.C., a Delaware limited liability company, is the managing
member of, and holds a controlling interest in, TC Group.  William E. Conway,
Jr., Frank C. Carlucci, III, Daniel A. D'Aniello, Richard D. Darman, David M.
Rubenstein, James A. Baker, III and David W. Dupree (each a "TCG Principal" and
collectively the "TCG Principals") are the executive officers of TCG and
managing members.  Each TCG Principal is a citizen and resident of the United
States.

    The principal business of each of the Purchasers is to acquire control
investments in connection with, among other situations, management buyouts,
restructurings and bankruptcies, and to make strategic investments in private
and public companies.  The principal business of each of TC Group, TCG and SCOP
is that of a merchant and investment banking firm.  The principal business of
CIA is partnership administration.  The principal occupation of each TCG
Principal is the fulfillment of his duties as an officer of TCG.  The principal
business of CIM is that of an investment manager.  The principal business of
each of the CIM Principals is the fulfillment of his duties as an officer of
CIM.

    The principal business address of TC Group, TCG and the TCG Principals is
c/o The Carlyle Group, 1001 Pennsylvania Avenue, N.W., Suite 220 South,
Washington, D.C. 20004.  The principal business address of CP II, CP III, CIG,
CIM and C-IP is Delaware Trust Building, 900 Market Street, Suite 200,
Wilmington, Delaware, 19801.  The principal business address of CIP II, CIP III,
C-IIP and C/S is c/o Coutts & Co., P.O. Box 707, Cayman Islands, British West
Indies.  The principal business address of CIA is c/o Maples and Calder, P.O.
Box 309, George Town, Grand Cayman, Cayman Islands, British West Indies.  The
principal business address of SCOP is c/o Curacao Company NV, Grand Cayman,
British West Indies.  The principal business address of SBA is 1801 Hermitage
Boulevard, Tallahassee, Florida 32308.

<PAGE>

CUSIP No.  45766Q 10 1                                           Page 13 of 22

    (d) AND (e).  During the last five years, none of the Reporting Persons,
and, to the best knowledge of the Reporting Persons, none of the TCG Principals,
has (i) been convicted in a criminal proceeding (excluding traffic violations or
similar misdemeanors) or (ii) been a party to a civil proceeding of a judicial
or administrative body of competent jurisdiction and as a result of such
proceeding was or is subject to a judgment, decree or final order enjoining
future violations of, or prohibiting or mandating activities subject to, federal
or state securities laws or finding any violation with respect to such laws.

ITEM 3.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION

    The source of the consideration paid by the Purchasers was contributions
from the partners of each individual Purchaser.  The source of the consideration
paid by SBA was the Fund.

ITEM 4.  PURPOSE OF TRANSACTION

    The Purchaser's and CIM's (for the Fund) acquisition of 25,000 shares of 
the Company's Series B Preferred Stock and 250,000 warrants (the "Warrants") 
to purchase an equivalent number of shares of Common Stock was consummated by 
the Reporting Persons as a long-term strategic investment in the Company.  
The acquisition was consummated on October 14, 1997.  The aggregate 
consideration paid by CP II was $8,207,727.  The aggregate consideration paid 
by CP III was $347,632.  The aggregate consideration paid by CIP II was 
$6,928,169.  The aggregate consideration paid by CIP III was $373,289.  The 
aggregate consideration paid by C/S was $1,559,913.  The aggregate 
consideration paid by CIG was $8,621.  The aggregate consideration paid by 
C-IP was $3,181,349.  The aggregate consideration paid by C-IIP was $918,659. 
The aggregate consideration paid by CIM on behalf of the Fund was $3,447,641. 
Neither TC Group nor TCG has any separate beneficial ownership in any 
securities of the Company, nor, to the knowledge of the Reporting Persons, 
does either have any present intention to acquire any such separate 
beneficial ownership.

    On October 14, 1997, the Company consummated a recapitalization 
("Recapitalization") pursuant to which (a) the Purchasers and CIM (for the 
Fund), made a cash investment of $25 million in the Company and received 
therefor (i) 25,000 shares of newly issued Convertible Preferred Stock, 
Series B, par value $0.001 per share of the Company's ("Series B Preferred 
Stock"), initially convertible, at the option of the holders thereof, in the 
aggregate into 2,985,075 shares of Common Stock, and (ii) warrants (the 
"Carlyle Warrants") to purchase up to 250,000 shares of Common Stock at the 
initial exercise price of $10.00 per share; (b) General Electric Company, a 
New York corporation ("GE") (i) surrendered its rights with respect to a 
supplemental service fee payable from the Company to GE in exchange for (A) 
the issuance of 7,000 shares of the Company's newly issued Convertible 
Preferred Stock, Series C, par value $0.001 per share (the "Series C 
Preferred Stock"), initially convertible, at the option of GE, in the 
aggregate into 835,821 shares of Common Stock, and (B) warrants (the "GE 
Warrants") to purchase up to 250,000 shares of Common Stock at the initial 
exercise price of $10.00 per share, and (ii) agreed to exchange all of its 
shares of the Company's Convertible Preferred Stock, Series A, par value 
$0.001 per share (the "Series A Preferred Stock") on the business day (the 
"Second Closing") after all waiting periods with respect to GE's filing under 
the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, have 
expired or been terminated, for an additional 20,953 shares of Series C 
Preferred Stock, initially convertible, at the option of the holders thereof, 
in the aggregate into 2,501,851 shares of Common Stock; and (c) the Company 
executed a Credit Agreement with NationsBank, N.A. pursuant to which 
NationsBank, as agent, committed to provide a total of $125 million in senior 
secured credit, including a $50 million acquisition facility (the "Credit 
Facility"), upon the satisfaction of certain customary conditions, which now 
have been satisfied.  The shares of Series B Preferred Stock and Series C 
Preferred Stock are also initially convertible, at the option of holders of a 
majority of each such series and under certain conditions, one year or more 
after the initial funding under the Credit Facility, into, in the aggregate, 
632,274.7 shares of the Company's Convertible Preferred Stock, Series D, par 
value $0.001 per share ("Series D Preferred Stock").  The Series D Preferred 
Stock is convertible into Common Stock at an initial conversion ratio of ten 
(10) shares of Common Stock for each share of Series D Preferred Stock.  
Conversion prices and ratios are subject to anti-dilution adjustment as more 
fully described in Sections 5, 6, 7 and 8 of the Certificate of Designation, 
Preferences and Rights of Convertible Preferred Stock, Series B (the "Series 
B Certificate of Designation," which is attached hereto as Exhibit 5 and 
incorporated herein by reference), Sections 5, 6, 7 and 8 of the Certificate 
of Designation, Preferences and Rights of Convertible Preferred Stock, Series 
C (the "Series C Certificate of Designation," which is attached hereto as 
Exhibit 6 and incorporated herein by reference), and Sections 5, 6 

<PAGE>

CUSIP No.  45766Q 10 1                                           Page 14 of 22

and 7 of the Certificate of Designation, Preferences and Rights of Convertible
Preferred Stock, Series D (the "Series D Certificate of Designation," which is
attached hereto as Exhibit 7 and incorporated herein by reference).

    The holders of the shares of Series B Preferred Stock have the right to 
vote with the holders of Common Stock and the holders of the Series A 
Preferred Stock and Series C Preferred Stock with respect to all matters 
submitted to a shareholder vote, except for the election of directors (with 
respect to which the holders of the shares of Series B Preferred Stock have 
the voting rights set forth in the next paragraph).  With respect to all 
matters submitted to a shareholder vote (except for the election of 
directors), each holder of Series B Preferred Stock has one vote for every 
share of Common Stock into which each share of Series B Preferred Stock is 
convertible pursuant to the terms of the Series B Certificate of Designation; 
provided, however, that the aggregate number of such votes, when combined 
with the aggregate number of votes attributable to the holders of the shares 
of Series C Preferred Stock, shall not exceed 37% of the total number of 
votes eligible to be cast.  Pursuant to Section 6 of the Securities Purchase 
Agreement dated October 14, 1997 between the Purchasers, the SBA and the 
Company (the "Securities Purchase Agreement"), and Sections 10 and 11 of the 
Series B Certificate of Designation: (i) the holders of the shares of Series 
B Preferred Stock have certain class voting rights with respect to certain 
transactions and preemptive rights with respect to certain securities 
issuances by the Company; and (ii) certain committees of the board of 
directors of the Company (including as members one or more Preferred Stock 
Directors, as defined below) are established with certain powers relating to 
the management of the affairs of the Company to be exercised pursuant to 
certain voting requirements. Pursuant to the Voting Agreement (CP II) dated 
as of October 14, 1997 (the "CP II Agreement"), attached hereto, together 
with certain Irrevocable Proxies related thereto, as Exhibit 8, and 
incorporated by reference herein, by and among certain Purchasers identified 
therein, such Purchasers agreed that CP II shall be entitled to exercise the 
power, with holders of a majority of the then outstanding shares of Series C 
Preferred Stock, to nominate the Joint Director (as defined below) and the 
power to control the voting of all shares of Series B Preferred Stock with 
respect to the actions specified in Sections 6.12(a) - 6.12(v) of the 
Securities Purchase Agreement.  Pursuant to the Voting Agreement (CP III) 
dated as of October 14, 1997 (the "CP III Agreement"), attached hereto, 
together with certain Irrevocable Proxies related thereto, as Exhibit 9, and 
incorporated by reference herein, by and among certain Purchasers identified 
therein, such Purchasers agreed that CP III shall be entitled to designate as 
nominee for election to the Company's Board of Directors one director that 
the Purchasers are entitled to elect as holders of the Series B Preferred 
Stock and the Purchasers further agreed to elect such person to the Company's 
Board of Directors (the "Board").  Pursuant to the Voting Agreement (C-IP) 
dated as of October 14, 1997 (the "C-IP Agreement" and together with the CP 
II Agreement and the CP III Agreement, the "Voting Agreements") attached 
hereto, together with certain Irrevocable Proxies related thereto, as Exhibit 
10, and incorporated by reference herein, by and among certain Purchasers 
identified therein, such Purchasers agree that C-IP shall be entitled to 
designate as nominee for election to the Company's Board of Directors one 
director that the Purchasers are entitled to elect as holders of the 
Company's Series B Preferred Stock and the Purchasers further agreed to elect 
such person to the Board. 

    Pursuant to the terms of the Recapitalization, the number of directors 
comprising the Board is currently fixed at nine.  Six directors (the "Common 
Stock Directors") are to be elected by the common stockholders, one of whom 
(the "Joint Director") is to be proposed by the majority holders of each of 
the Series B Preferred Stock and the Series C Preferred Stock and approved by 
a majority of the Board in its sole discretion. Of the three remaining 
directors, two are to be elected by the holders of the Series B Preferred 
Stock and one is to be elected by the holders of the Series C Preferred 
Stock, subject to increase or decrease in certain circumstances (the 
"Preferred Stock Directors").  Presently, the Board of the Company consists 
of seven directors, five of whom are Common Stock Directors and two of whom 
are Preferred Stock Directors elected by the holders of the Series B 
Preferred Stock.  The vacancies created for the Joint Director and the 
Preferred Stock Director to be elected by the holders of Series C Preferred 
Stock have not yet been filled.

    Upon a conversion by the holders of the Series B Preferred Stock and the
Series C Preferred Stock of their shares of preferred stock into shares of
Series D Preferred Stock (a "Type B Event Date"), the number of members of the
Board shall be increased automatically by the smallest whole number that will
result in at least the Type B Percentage (but less than sixty six and two-thirds
percent (66 2/3%)) of the members of the Board being Series D Directors. 
Immediately following a Type B Event Date, the holders of Series D Preferred
Stock shall have the right to elect all of the new directors (the "Conversion
Directors"), using cumulative voting.  The "Type B Percentage" equals a
percentage equal to 

<PAGE>

CUSIP No.  45766Q 10 1                                           Page 15 of 22

the number of shares of Common Stock held by all holders of Series B Preferred
Stock and Series C Preferred Stock as of the Type B Event Date (assuming
conversion of all such shares of Series B Preferred Stock and Series C Preferred
Stock into Common Stock) divided by the total number of shares of Common Stock
outstanding as of such date (assuming conversion of all convertible shares of
Series B Preferred Stock and Series C Preferred Stock as of such date);
provided, however, that the maximum Type B Percentage is sixty-four percent
(64%).  "Series D Directors" means, collectively, the Preferred Stock Directors
and the Conversion Directors.  

    The foregoing discussion in response to this Item 4 is qualified in its
entirety by reference to the Securities Purchase Agreement, the Series B
Certificate of Designation, the Series C Certificate of Designation, the
Series D Certificate of Designation, the Registration Rights Agreement and the
Warrant Agreement, all of which are attached as Exhibits hereto and which are
hereby incorporated herein.

    All shares of the Stock held by the Reporting Persons were acquired by 
them as an investment in the ordinary course of business and not with the 
purpose of changing control of the Company, and are held by the Reporting 
Persons for investment purposes.  Each Reporting Person may, subject to the 
continuing evaluation of the factors discussed herein, acquire from time to 
time additional shares of the Company's preferred stock, warrants or shares 
of Common Stock, or other securities of the Company in the open market or in 
privately negotiated transactions, by exchange offer or otherwise.  Depending 
on the factors discussed herein, each Reporting Person may, from time to 
time, retain or sell all or a portion of its holdings of the Series B 
Preferred Shares, Carlyle Warrants or shares of Common Stock to one or more 
of certain of their affiliates (including, by way of distribution to their 
partners or members, as applicable) pursuant to the provisions of the 
Securities Purchase Agreement, or, under certain circumstances described in 
the Securities Purchase Agreement, to other persons in the open market or in 
privately negotiated transactions.  Each Reporting Person may also have 
discussions with the Company's management regarding methods of increasing the 
Company's sales, cash flow and profitability.  Any actions that any Reporting 
Person might undertake will be dependent upon such Reporting Person's review 
of numerous factors, including, among other things, the availability of 
shares of the Company's preferred stock, warrants or shares of Common Stock, 
for purchase and the relevant price levels; general market and economic 
conditions; ongoing evaluation of the Company's business operations and 
prospects; the relative attractiveness of alternative business and investment 
opportunities; the actions of the Company's management and Board of 
Directors; and other future developments.  Other than as set forth herein, 
neither any the Reporting Person nor TC Group nor TCG has any current plans 
which relate to or would result in any of the events described in Items (a) 
through (j) of the instructions to this Item 4 of Schedule 13D.

<PAGE>

CUSIP No.  45766Q 10 1                                           Page 16 of 22

ITEM 5.  INTEREST IN SECURITIES OF THE ISSUER

<TABLE>
<CAPTION>
 

- ---------------------------------------------------------------------------------------------------------------------
                         BENEFICIAL OWNERSHIP OF         BENEFICIAL OWNERSHIP OF
                           COMMON STOCK UPON               COMMON STOCK UPON            TOTAL BENEFICIAL OWNERSHIP
                        CONVERSION OF PREFERRED           EXERCISE OF WARRANTS
                               SHARES
- ---------------------------------------------------------------------------------------------------------------------
                       SHARES         PERCENTAGE(1)  SHARES         PERCENTAGE(1)    SHARES       PERCENTAGE(1)
- ---------------------------------------------------------------------------------------------------------------------
<S>                  <C>              <C>            <C>            <C>            <C>           <C>    
CP II               2,985,075          50.17%       250,000           4.20%        3,235,075       54.37%
- ---------------------------------------------------------------------------------------------------------------------
CP III              2,985,075          50.17%       250,000           4.20%        3,235,075       54.37%
- ---------------------------------------------------------------------------------------------------------------------
CIP II                827,244           13.9%        69,282           1.16%          896,526       15.07%
- ---------------------------------------------------------------------------------------------------------------------
CIP III                44,571            .75%         3,733            .06%           48,304         .81%
- ---------------------------------------------------------------------------------------------------------------------
C/S                   186,258           3.13%        15,599            .26%          201,857        3.39%
- ---------------------------------------------------------------------------------------------------------------------
CIG                     1,029            .02%            86            .01%            1,115         .01%
- ---------------------------------------------------------------------------------------------------------------------
C-IP                2,985,075          50.17%       250,000           4.20%        3,235,075       54.37%
- ---------------------------------------------------------------------------------------------------------------------
C-IIP                 109,714           1.84%         9,188            .15%          118,902        2.00%
- ---------------------------------------------------------------------------------------------------------------------
CIM                   411,658           6.92%        34,746            .58%          446,404        7.50%
- ---------------------------------------------------------------------------------------------------------------------
TC Group            2,985,075          50.17%       250,000           4.20%        3,235,075       54.37%
- ---------------------------------------------------------------------------------------------------------------------
Reporting Persons   2,985,075          50.17%       250,000           4.20%        3,235,075       54.37%
- ---------------------------------------------------------------------------------------------------------------------


</TABLE>

(1)  All percentages calculated based on 5,949,800 shares, which equals the
total shares of Common Stock presently issued and outstanding after giving
effect to the conversion of all Preferred Shares into Common Stock and the
exercise of all Carlyle Warrants.

<PAGE>

CUSIP No.  45766Q 10 1                                           Page 17 of 22

(b).  CP II is currently the beneficial owner of 8,208 Preferred Shares (which
have the right to convert into 980,028 shares of Common Stock) and Warrants to
purchase 82,077 shares of Common Stock.  CP II has the power to vote and dispose
all such shares, totaling 1,062,105.  TC Group is its general partner.  Pursuant
to the CP III Agreement and the C-IP Agreement more fully described in Item 4,
CP II shares the power to vote these shares with CP III and C-IP.  Pursuant to
the CP II Agreement more fully described in Item 4, CP II has shared power to
vote the 3,235,075 shares beneficially owned by the Purchasers and CIM (for 
the Fund). 

    CP III is currently the beneficial owner of 375 Preferred Shares (which
have the right to convert into 44,732 shares of Common Stock) and Warrants to
purchase 3,746 shares of Common Stock.  CP III has the power to vote and dispose
all such shares, totaling 48,478.  TC Group is its general partner.  Pursuant to
the CP II Agreement and the C-IP Agreement more fully described in Item 4, CP
III shares the power to vote these shares with CP II and C-IP.  Pursuant to the
CP III Agreement more fully described in Item 4, CP III has shared power to vote
the 3,235,075 shares beneficially owned by the Purchasers and CIM (for the 
Fund).

    CIP II is currently the beneficial owner of 6,928 Preferred Shares (which
have the right to convert into 827,244 shares of Common Stock) and Warrants to
purchase 69,282 shares of Common Stock.  CIP II has the power to vote and
dispose all such shares, totaling 896,526.  TC Group is its managing general
partner.  Pursuant to the Voting Agreements more fully described in Item 4, CIP
II shares the power to vote these shares with CP II, CP III, and C-IP.

    CIP III is currently the beneficial owner of 373 Preferred Shares (which
have the right to convert into 44,571 shares of Common Stock) and Warrants to
purchase 3,733 shares of Common Stock.  CIP III has the power to vote and
dispose all such shares, totaling 48,304.  TC Group is its managing general
partner.  Pursuant to the Voting Agreements more fully described in Item 4, CIP
III shares the power to vote these shares with CP II, CP III, and C-IP.

    C/S is currently the beneficial owner of 1,559 Preferred Shares (which have
the right to convert into 186,258 shares of Common Stock) and Warrants to
purchase 15,599 shares of Common Stock.  C/S has the power to vote and dispose
all such shares, totaling 201,857.  TC Group is its managing general partner. 
Pursuant to the Voting Agreements more fully described in Item 4, C/S shares the
power to vote these shares with CP II, CP III, and C-IP.

    CIG is currently the beneficial owner of 9 Preferred Shares (which have the
right to convert into 1,029 shares of Common Stock) and Warrants to purchase 86
shares of Common Stock.  CIG has the power to vote and dispose all such shares,
totaling 1,115.  TC Group is its general partner.  Pursuant to the Voting
Agreements more fully described in Item 4, CIG shares the power to vote these
shares with CP II, CP III, and C-IP.

    C-IP is currently the beneficial owner of 3,181 Preferred Shares (which
have the right to convert into 379,863 shares of Common Stock) and Warrants to
purchase 31,813 shares of Common Stock.  C-IP has the power to vote and dispose
all such shares, totaling 411,676.  TC Group is its general partner.  Pursuant
to the CP II Agreement and the CP III Agreement more fully described in Item 4,
C-IP shares the power to vote these shares with CP II and CP III.  Pursuant to
the C-IP Agreement more fully described in Item 4, C-IP has shared power to vote
the 3,235,075 shares beneficially owned by the Purchasers and CIM (for the 
Fund).  

    C-IIP is currently the beneficial owner of 919 Preferred Shares (which have
the right to convert into 109,714 shares of Common Stock) and Warrants to
purchase 9,187 shares of Common Stock.  C-IIP has the power to vote and dispose
all such shares, totaling 118,902.  TC Group is its managing general partner. 
Pursuant to the Voting Agreements more fully described in Item 4, C-IIP shares
the power to vote these shares with CP II, CP III, and C-IP.

    TC Group may be deemed to be the beneficial owner of 25,000 Preferred
Shares (which convert into 2,985,075 shares of Common Stock) and Warrants to
purchase 250,000 shares of Common Stock as the general partner of CP II, CP III,
CIG, and C-IP, as the managing general partner of CIP II, CIP III, C/S and C-IIP
and as an affiliate of CIM.  TC Group may be deemed to share voting and disposal
rights of all such shares, totaling 3,235,075 as the general partner of CP II,
CP III, CIG, and C-IP, as the managing general partner of CIP II, CIP III, C/S
and C-IP, and as an affiliate of CIM.

    As investment adviser to SBA, CIM may be deemed the beneficial owner of
3,448 Preferred Shares (which have the right to convert into 411,658 shares of
Common Stock) and Warrants to purchase 34,746 shares of Common Stock.  CIM has
the power to vote and dispose all such shares, totaling 446,404.  Pursuant to
the Voting Agreements more fully described in Item 4, CIM shares the power to
vote these shares with CP II, CP III, and C-IP.

<PAGE>

CUSIP No.  45766Q 10 1                                           Page 18 of 22

    Reporting Persons are the beneficial owner of 25,000 shares of Preferred
Stock (which have the right to convert into 2,985,075 shares of Common Stock)
and Warrants to purchase 250,000 shares of Common Stock.  Reporting Persons thus
have voting rights and disposal rights of all such shares, totaling 3,235,075
shares of Common Stock.

    CIA does not have the power to vote or dispose of the Company's Common
Stock under the partnership agreements of CP II, CP III or C-IP.  SCOP does not
have the power to vote or dispose of the Company's Common Stock under the
partnership agreement of C/S.  Therefore, CIA and SCOP are not deemed beneficial
owners of any of the securities of the Company held by the Reporting Persons.

    TC Group and TCG may be deemed to share beneficial ownership of the 
shares of Common Stock beneficially owned by the Reporting Persons. TC Group 
and TCG expressly disclaim any such beneficial ownership. William E. Conway, 
Jr., Frank C. Carlucci, III, Daniel A. D'Aniello, Richard G. Darman, David M. 
Rubenstein, James A. Baker, III and David W. Dupree are managing members of 
TCG, and, in such capacity, such individuals may be deemed to share 
beneficial ownership of any shares of Common Stock beneficially owned by TCG. 
Such individuals expressly disclaim any such beneficial ownership.

    (C).  Not applicable.

    (D)  No person other than the Reporting Persons (and, as to CIM, the Fund 
with respect to the receipt of dividends or proceeds from the sale of the 
shares of capital stock of the Company owned by CIM) is known to the 
Reporting Persons to have the right to receive or the power to direct the 
receipt of dividends from, or the proceeds from the sale of, the shares of 
capital stock of the Company owned by the Reporting Persons.

    (E).  Not applicable.

ITEM 6.  CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT
TO SECURITIES OF THE ISSUER.

    The response to Item 4 is incorporated by reference herein.

    On September 6, 1996, SBA, CIG and CIM entered into a certain Investment
Management Agreement, pursuant to which the parties thereto agreed that CIM
shall act as investment manager with the power to invest and manage certain
assets of the Fund on behalf of SBA.

<PAGE>

CUSIP No.  45766Q 10 1                                           Page 19 of 22

ITEM 7.  MATERIAL TO BE FILED AS EXHIBITS.

- --------------------------------------------------------------------------------
Exhibit 1.    Joint Filing Agreement, dated as of October 23, 1997, by and
              among CP II, CP III, CIP II, CIP III, C/S, CIG, CIM, C-IP and
              C-IIP.
- --------------------------------------------------------------------------------
Exhibit 2.    Securities Purchase Agreement, dated as of October 14, 1997, by
              and among the Company and certain purchasers      identified
              therein.
- --------------------------------------------------------------------------------
Exhibit 3.    Warrant Agreement, dated as of October 14, 1997, by and among the
              Company and certain purchasers identified therein.
- --------------------------------------------------------------------------------
Exhibit 4.    Registration Rights Agreement, dated as of October  14, 1997, by
              and among the Company and certain purchasers identified therein.
- --------------------------------------------------------------------------------
Exhibit 5.    Certificate of Designation, Preferences and Rights of Series B
              Preferred Stock
- --------------------------------------------------------------------------------
Exhibit 6.    Certificate of Designation, Preferences and Rights of Series C
              Preferred Stock
- --------------------------------------------------------------------------------
Exhibit 7.    Certificate of Designation, Preferences and Rights of Series D
              Preferred Stock
- --------------------------------------------------------------------------------
Exhibit 8.    Voting Agreement (CP II)
- --------------------------------------------------------------------------------
Exhibit 9.    Voting Agreement (CP III)
- --------------------------------------------------------------------------------
Exhibit 10.   Voting Agreement (C-IP)
- --------------------------------------------------------------------------------

<PAGE>

CUSIP No.  45766Q 10 1                                           Page 20 of 22


                                      SIGNATURE
After reasonable inquiry and to the best knowledge and belief of each, the
undersigned hereby certify that the information set forth in this statement is
true, complete, and correct.

Dated this 24th day of October, 1997.



                                  CARLYLE PARTNERS II, L.P.,
                                  a Delaware limited partnership

                                  By:  TC Group, L.L.C., as the General Partner

                                       By:  /s/  David W. Dupree
                                            ---------------------
                                       Name:  David W. Dupree
                                       Title: Managing Director 


                                  CARLYLE PARTNERS III, L.P.,
                                  a Delaware limited partnership

                                  By:  TC Group, L.L.C., as the General Partner

                                       By:  /s/  David W. Dupree
                                            ---------------------
                                       Name:  David W. Dupree
                                       Title: Managing Director 


                                  CARLYLE INTERNATIONAL PARTNERS II, L.P.,
                                  a Cayman Islands exempted limited partnership

                                  By:  TC Group, L.L.C., as the General Partner

                                       By:  /s/  David W. Dupree
                                            --------------------
                                       Name:  David W. Dupree
                                       Title: Managing Director 


                                  CARLYLE INTERNATIONAL PARTNERS III, L.P.,
                                  a Cayman Islands exempted limited partnership

                                  By:  TC Group, L.L.C., as the General Partner

                                       By:  /s/  David W. Dupree
                                            --------------------
                                       Name:  David W. Dupree
                                       Title: Managing Director 


                                  TC GROUP, L.L.C.,
                                  a Delaware limited liability company
                                  
                              By: TCG Holdings, L.L.C., as the Managing Member
                                  
                                      By:  /s/  David W. Dupree
                                           --------------------
                                      Name:  David W. Dupree
                                      Title: Managing Director 
                                  



<PAGE>

CUSIP No.  45766Q 10 1                                           Page 21 of 22


                                  C/S INTERNATIONAL PARTNERS,
                                  a Cayman Islands general partnership

                                  By:  TC Group, L.L.C., as the General Partner

                                       By:  /s/  David W. Dupree
                                            --------------------
                                       Name:  David W. Dupree
                                       Title: Managing Director 


                                  CARLYLE INVESTMENT GROUP, L.P.,
                                  a Delaware limited partnership

                                  By:  TC Group, L.L.C., as the General Partner

                                       By:  /s/  David W. Dupree
                                            --------------------
                                       Name:  David W. Dupree
                                       Title: Managing Director 


                                  CARLYLE-INSIGHT INTERNATIONAL
                                  PARTNERS, L.P., 
                                  a Cayman Islands exempted limited partnership

                                  By:  TC Group, L.L.C., as the General Partner

                                       By:  /s/  David W. Dupree
                                            --------------------
                                       Name:  David W. Dupree
                                       Title: Managing Director 


                                  CARLYLE-INSIGHT PARTNERS, L.P.,
                                  a Delaware limited partnership

                                  By:  TC Group, L.L.C., as the General Partner

                                       By:  /s/  David W. Dupree
                                            ---------------------
                                       Name:  David W. Dupree
                                       Title: Managing Director 


                                  CARLYLE INVESTMENT MANAGEMENT, L.L.C.,
                                  a Delaware limited liability company

                                       By:  /s/  Daniel A. D'Aniello
                                            -------------------------
                                       Name:  Daniel A. D'Aniello
                                       Title:    Managing Member

<PAGE>

CUSIP No.  45766Q 10 1                                           Page 22 of 22


                                    EXHIBIT INDEX 

- --------------------------------------------------------------------------------
Exhibit 1.    Joint Filing Agreement, dated as of October 23, 1997, by and
              among CP II, CP III, CIP II, CIP III, C/S, CIG, CIM, C-IP and
              C-IIP.
- --------------------------------------------------------------------------------
Exhibit 2.    Securities Purchase Agreement, dated as of October 14, 1997, by
              and among the Company and certain purchasers identified therein.
- --------------------------------------------------------------------------------
Exhibit 3.    Warrant Agreement, dated as of October 14, 1997, by and among the
              Company and certain purchasers identified therein.
- --------------------------------------------------------------------------------
Exhibit 4.    Registration Rights Agreement, dated as of October  14, 1997, by
              and among the Company and certain purchasers identified therein.
- --------------------------------------------------------------------------------
Exhibit 5.    Certificate of Designation, Preferences and Rights of Series B
              Preferred Stock
- --------------------------------------------------------------------------------
Exhibit 6.    Certificate of Designation, Preferences and Rights of Series C
              Preferred Stock
- --------------------------------------------------------------------------------
Exhibit 7.    Certificate of Designation, Preferences and Rights of Series D
              Preferred Stock
- --------------------------------------------------------------------------------
Exhibit 8.    Voting Agreement (CP II)
- --------------------------------------------------------------------------------
Exhibit 9.    Voting Agreement (CP III)
- --------------------------------------------------------------------------------
Exhibit 10.   Voting Agreement (C-IP)
- --------------------------------------------------------------------------------



<PAGE>

                                      EXHIBIT I
                                JOINT FILING AGREEMENT

    In accordance with Rule 13d-1(f) promulgated under the Securities Exchange
Act of 1934, as amended, the undersigned hereby agree to the joint filing with
all other Reporting Persons (as such term is defined in the Schedule 13D
referred to below) on behalf of each of them of a statement on Schedule 13D
(including amendments thereto) with respect to the Common Stock, par value $.001
per share, of InSight Health Services Corp., a Delaware corporation, and that
this Agreement may be included as an Exhibit to such joint filing.  This
Agreement may be executed in any number of counterparts, all of which taken
together shall constitute one and the same instrument.


              [Remainder of this page has intentionally been left blank]



<PAGE>


    IN WITNESS WHEREOF, the undersigned hereby execute this Agreement as of
this 23rd day of October, 1997.



                                  CARLYLE PARTNERS II, L.P.,
                                  a Delaware limited partnership

                                  By:  TC Group, L.L.C., as the General Partner

                                       By:  /s/  David W. Dupree
                                            --------------------
                                       Name:  David W. Dupree
                                       Title: Managing Director 


                                  CARLYLE PARTNERS III, L.P.,
                                  a Delaware limited partnership

                                  By:  TC Group, L.L.C., as the General Partner

                                       By:  /s/  David W. Dupree
                                            --------------------
                                       Name:  David W. Dupree
                                       Title: Managing Director 


                                  CARLYLE INTERNATIONAL PARTNERS II, L.P.,
                                  a Cayman Islands exempted limited partnership

                                  By:  TC Group, L.L.C., as the General Partner

                                       By:  /s/  David W. Dupree
                                            --------------------
                                       Name:  David W. Dupree
                                       Title: Managing Director 


                                  CARLYLE INTERNATIONAL PARTNERS III, L.P.,
                                  a Cayman Islands exempted limited partnership

                                  By:  TC Group, L.L.C., as the General Partner

                                       By:  /s/  David W. Dupree
                                            --------------------
                                       Name:  David W. Dupree
                                       Title: Managing Director 


                                  C/S INTERNATIONAL PARTNERS,
                                  a Cayman Islands general partnership

                                  By:  TC Group, L.L.C., as the General Partner

                                       By:  /s/  David W. Dupree
                                            --------------------
                                       Name:  David W. Dupree
                                       Title: Managing Director 



<PAGE>


                                  CARLYLE INVESTMENT GROUP, L.P.,
                                  a Delaware limited partnership

                                  By:  TC Group, L.L.C., as the General Partner

                                       By:  /s/  David W. Dupree
                                            --------------------
                                       Name:  David W. Dupree
                                       Title: Managing Director 


                                  CARLYLE-INSIGHT INTERNATIONAL
                                  PARTNERS, L.P., 
                                  a Cayman Islands exempted limited partnership

                                  By:  TC Group, L.L.C., as the General Partner

                                       By:  /s/  David W. Dupree
                                            --------------------
                                       Name:  David W. Dupree
                                       Title: Managing Director 


                                  CARLYLE-INSIGHT PARTNERS, L.P.,
                                  a Delaware limited partnership

                                  By:  TC Group, L.L.C., as the General Partner

                                       By:  /s/  David W. Dupree
                                            --------------------
                                       Name:  David W. Dupree
                                       Title: Managing Director 


                                  CARLYLE INVESTMENT MANAGEMENT, L.L.C.,
                                  a Delaware limited liability company

                                       By:  /s/  Daniel A. D'Aniello
                                            ------------------------
                                       Name:  Daniel A. D'Aniello
                                       Title:    Managing Member


                                  TC GROUP, L.L.C.,
                                  a Delaware limited liability company
                                  
                               By: TCG Holdings, L.L.C., as the Managing Member
                                  
                                      By:  /s/  David W. Dupree
                                           --------------------
                                      Name:  David W. Dupree
                                      Title: Managing Director 


<PAGE>

                                                                      EXHIBIT 2

                            SECURITIES PURCHASE AGREEMENT

                                           

                                     by and among



                              INSIGHT HEALTH SERVICES CORP.

                                         and

                              CARLYLE PARTNERS II, L.P.,
                             CARLYLE PARTNERS III, L.P.,
                       CARLYLE INTERNATIONAL PARTNERS II, L.P.,
                      CARLYLE INTERNATIONAL PARTNERS III, L.P.,
                             C/S INTERNATIONAL PARTNERS,
                      STATE BOARD OF ADMINISTRATION OF FLORIDA,
                           CARLYLE INVESTMENT GROUP, L.P.,
                  CARLYLE-INSIGHT INTERNATIONAL PARTNERS, L.P., and
                            CARLYLE-INSIGHT PARTNERS, L.P.


                                   OCTOBER 14, 1997

<PAGE>

                                  TABLE OF CONTENTS
                                                                            Page
                                                                            ----

ARTICLE I DEFINITIONS.........................................................2
    1.1 Defined Terms.........................................................2

ARTICLE II PURCHASE AND SALE OF SECURITIES...................................15
    2.1 Purchase and Sale of Securities......................................15
    2.2 Consideration for Securities.........................................15

ARTICLE III CLOSING..........................................................16
    3.1 Closing..............................................................16
    3.2 Deliveries by the Company at the Closing.............................16
    3.3 Deliveries by the Purchaser at the Closing...........................16
    3.4 Second Closing.......................................................16
    3.5 Form of Documents and Instruments....................................17

ARTICLE IV REPRESENTATIONS AND WARRANTIES OF THE COMPANY.....................17
    4.1 Organization of the Company..........................................17
    4.2 Capitalization of the Company........................................17
    4.3 Authorization of Issuance............................................19
    4.4 Authorization........................................................20
    4.5 Noncontravention.....................................................20
    4.6 Consents.............................................................20
    4.7 Subsidiaries.........................................................21
    4.8 Employee Benefit Plans and Other Agreements..........................22
    4.9 Governmental Filings.................................................25
    4.10 Financial Statements and Reports....................................25
    4.11 Absence of Undisclosed Liabilities: Guarantees......................26
    4.12 Absence of Certain Changes..........................................26
    4.13 Compliance With Laws................................................27
    4.14 Litigation..........................................................28
    4.15 True and Complete Disclosure........................................29
    4.16 Taxes...............................................................29
    4.17 Environmental Matters...............................................31
    4.18 Insurance...........................................................32
    4.19 Real Property and Leaseholds........................................32
    4.20 Tangible Assets.....................................................33
    4.21 Contracts and Commitments...........................................34
    4.22 Books and Records...................................................34
    4.23 Labor Matters.......................................................35
    4.24 Payments............................................................35
    4.25 Intellectual Property...............................................35
    4.26 Securities Offerings................................................36


                                          i

<PAGE>

    4.27 No Other Agreements to Sell the Assets or the Company...............36
    4.28 No Brokers..........................................................36
    4.29 Accounts and Notes Receivable.......................................37
    4.30 Indebtedness........................................................37
    4.31 Transactions with Affiliates........................................37
    4.32 No Research Grants..................................................37
    4.33 Certain Regulatory Matters..........................................37
    4.34 Certain Additional Regulatory Matters...............................38
    4.35 Medicare/Medicaid Participation.....................................39
    4.36 Compliance with Medicare/Medicaid and Insurance Programs............39

ARTICLE V REPRESENTATIONS AND WARRANTIES OF THE PURCHASER....................40
    5.1 Organization of the Purchaser........................................40
    5.2 Authorization........................................................40
    5.3 Noncontravention.....................................................41
    5.4 Consents and Appeals.................................................41
    5.5 Purchase for Investment..............................................41
    5.6 No Brokers...........................................................42
    5.7 No Agreements........................................................42

ARTICLE VI COVENANTS.........................................................42
    6.1 Best Efforts.........................................................42
    6.2 Restrictive Agreements Prohibited....................................43
    6.3 Continuing Operations................................................43
    6.4 Financial Statements and Information.................................43
    6.5 Press Releases.......................................................45
    6.6 Notification of Certain Matters......................................45
    6.7 Liability Insurance..................................................45
    6.8 Conversion Stock.....................................................46
    6.9 Certain Regulatory Matters...........................................46
    6.10 Employment Arrangements.............................................47
    6.11 Transactions with Affiliates........................................47
    6.12 Stockholder Approval of Certain Actions.............................48
    6.13 Board of Directors..................................................51
    6.14 Restrictions on Transfer of Capital Stock...........................53
    6.15 Expiration of Certain Covenants.....................................56

ARTICLE VII CONDITIONS TO CLOSING............................................56
    7.1 Conditions to Each Party's Obligations...............................56
    7.2 Conditions to the Company's Obligations..............................57
    7.3 Conditions to the Purchaser' Obligations.............................58

ARTICLE VIII INDEMNIFICATION.................................................59

    8.1 Survival of Representations, Etc.....................................59
    8.2 Indemnification by the Company.......................................60
    8.3 Limitation on Indemnities............................................60

                                          ii
<PAGE>

    8.4 Losses...............................................................60
    8.5 Defense of Claims....................................................61

ARTICLE IX MISCELLANEOUS.....................................................62
    9.1 Fees and Expenses....................................................62
    9.2 Injunctive Relief....................................................62
    9.3 Assignment...........................................................62
    9.4 Notices..............................................................63
    9.5 Choice of Law........................................................64
    9.6 Entire Agreement.....................................................64
    9.7 Counterparts.........................................................64
    9.8 Invalidity...........................................................65
    9.9 Headings; Language...................................................65
    9.10 Limitation of Liability.............................................65
    9.11 Amendments and Waivers..............................................65

EXHIBITS

EXHIBIT A:    Form of Amended and Restated Bylaws
EXHIBIT B:    Form of Registration Rights Agreement
EXHIBIT C:    Form of Series B Certificate of Designation
EXHIBIT D:    Form of Series C Certificate of Designation
EXHIBIT E:    Form of Series D Certificate of Designation
EXHIBIT F:    Form of Warrant Agreement
EXHIBIT G:    Form of GE Warrant Agreement
EXHIBIT H:    Form of Opinion of the Purchaser's Counsel
EXHIBIT I:    Form of Opinion of the Company's Corporate Counsel
EXHIBIT J:    Persons Whose Knowledge Is Attributed to the Company
EXHIBIT K:    Center Operations
EXHIBIT L:    Form of Supplemental Service Fee Termination Agreement

SCHEDULES

Schedule 4.1(b)  Organization of the Company
Schedule 4.2     Capitalization of the Company
Schedule 4.6     Consents
Schedule 4.7     Subsidiaries
Schedule 4.8     Employee Benefit Plans and Other Agreements
Schedule 4.11    Absence of Undisclosed Liabilities: Guarantees
Schedule 4.12(x) Absence of Certain Changes
Schedule 4.13(a) Compliance With Laws
Schedule 4.14    Litigation
Schedule 4.16    Taxes
Schedule 4.17    Environmental Matters
Schedule 4.19    Real Property and Leaseholds
Schedule 4.20    Tangible Assets


                                         iii
<PAGE>

Schedule 4.21    Contracts and Commitments
Schedule 4.23    Labor Matters
Schedule 4.25    Intellectual Property
Schedule 4.26    Securities Offerings
Schedule 4.30    Indebtedness
Schedule 4.31    Transactions with Affiliates


                                          iv
<PAGE>
                            SECURITIES PURCHASE AGREEMENT


         This SECURITIES PURCHASE AGREEMENT (this "Agreement"), dated as of
October 14, 1997, is by and among INSIGHT HEALTH SERVICES CORP., a Delaware
corporation (the "Company"), and CARLYLE PARTNERS II, L.P., a Delaware limited
partnership, CARLYLE PARTNERS III, L.P., a Delaware limited partnership, CARLYLE
INTERNATIONAL PARTNERS II, L.P., a Cayman Islands exempted limited partnership,
CARLYLE INTERNATIONAL PARTNERS III, L.P., a Cayman Islands exempted limited
partnership, C/S INTERNATIONAL PARTNERS, a Cayman Islands general partnership,
STATE BOARD OF ADMINISTRATION OF FLORIDA, a separate account maintained pursuant
to an Investment Management Agreement dated as of September 6, 1996 between the
State Board of Administration of Florida, Carlyle Investment Group, L.P. and
Carlyle Investment Management, L.L.C., CARLYLE INVESTMENT GROUP, L.P., a
Delaware limited partnership, CARLYLE-INSIGHT INTERNATIONAL PARTNERS, L.P., a
Cayman Islands exempted limited partnership, and CARLYLE-INSIGHT PARTNERS, L.P.,
a Delaware limited partnership (collectively, the "Purchaser").

                                       RECITALS

         WHEREAS, the Company desires to sell to the Purchaser, and the
Purchaser desires to purchase from the Company, for the consideration set forth
in Section 2.2 hereof, (i) an aggregate of 25,000 shares (the "Preferred
Shares") of its newly issued Series B Preferred Stock, each share of which
Series B Preferred Stock shall be convertible (a) initially into one hundred
nineteen and four hundred three one-thousandths (119.403) shares of Common Stock
at an initial conversion price of $8.375 per share of such Common Stock (so that
all of the shares of Series B Preferred Stock purchased by the Purchaser shall
be convertible initially into an aggregate of 2,985,075 shares of such Common
Stock), having the rights, designations and preferences set forth in the Series
B Certificate of Designation or (b) after the Type B Trigger Date, into shares
of Series D Preferred Stock having the rights, designations and preferences set
forth in the Series D Certificate of Designation on the terms set forth in the
Series D Certificate of Designation and (ii) the Warrants; and 

         WHEREAS, contemporaneously with the Purchaser's acquisition of the
Securities, and as a condition to such acquisition, General Electric Company
shall  (i) acquire warrants (the "GE Warrants") initially to purchase 250,000
shares of Common Stock at an initial exercise price of $10.00 per share and
(ii) terminate the Supplemental Service Fee described in the Proxy Statement in
exchange for 7,000 shares of newly issued Series C Preferred Stock, each share
of which Series C Preferred Stock shall be convertible (a) initially into one
hundred nineteen and four hundred three one-thousandths (119.403) shares of
Common Stock at an initial conversion price of $8.375 per share of Common Stock
(so that such shares of Series C Preferred Stock acquired in respect of such
termination would be initially convertible into an aggregate of 835,821 shares
of Common Stock, at an initial conversion price of $8.375 per share) or (b)
after the Type B Trigger Date, into shares of Series D Preferred Stock having
the rights, designations and 

<PAGE>

preferences set forth in the Series D Certificate of Designation on the terms
set forth in the Series D Certificate of Designation; and 

         WHEREAS, contemporaneously with the Purchaser's acquisition of the
Securities, and as a condition to such acquisition, the Company shall execute
and deliver definitive documents with respect to the Credit Facility, and
funding shall occur upon filing by the lender under the Credit Facility of
appropriate UCC filings and certain other conditions set forth in the
documentation related to the Credit Facility, and upon such funding, certain of
the proceeds of the Credit Facility and the investment described herein shall be
used by the Company to repay (i) Seventy Million Seven Hundred One Thousand Six
Hundred Eleven Dollars and Seventy-Five Cents ($70,701,611.75) in principal,
interest and fees, plus additional accrued and unpaid interest associated
therewith at the rate of Nineteen Thousand, Two Hundred Ninety-Six Dollars
($19,296) per day for each day after October 14, 1997, of Indebtedness of the
Company and certain of its Affiliates to GE pursuant to the Master Debt
Restructuring Agreement, and (ii) certain other Indebtedness; and

         WHEREAS, the parties contemplate that at the Second Closing, GE shall
convert all of its 2,501,760 shares of Series A Preferred Stock into 20,953
shares of newly issued Series C Preferred Stock.

                                      AGREEMENT

         NOW, THEREFORE, in consideration of the mutual covenants and premises
contained herein and for other good and valuable consideration, the receipt and
adequacy of which are hereby acknowledged, the parties hereto agree as follows:

                                      ARTICLE I
                                     DEFINITIONS

1.1  DEFINED TERMS.

         As used herein, the terms below shall have the following meanings:

         "AFFILIATE" of any specified Person means (a) any other Person
directly or indirectly controlling or controlled by or under direct or indirect
common control with such specified Person or (b) the beneficial owner of ten
percent (10%) or more of the voting securities of such Person).  For purposes of
this definition, "control" (including, with correlative meanings, the terms:
"controlling," "controlled by" and "under common control with"), as used with
respect to any Person, shall mean the possession, directly or indirectly, of the
power to direct or cause the direction of the management or policies of such
Person, whether through the ownership of voting securities, by agreement or
otherwise.

         "AGREEMENT" means this Securities Purchase Agreement, together with
all Schedules and Exhibits referenced herein, as the same hereinafter may be
amended from time to time.



                                          2
<PAGE>

         "AMENDED BYLAWS" means the Amended and Restated Bylaws of the Company,
in the form attached hereto as Exhibit A.

         "ANCILLARY AGREEMENTS" means the Warrant Agreement and the
Registration Rights Agreement, as each hereinafter may be amended from time to
time.

         "APPLICABLE LAW" means any statute, law, rule or regulation or any
judgment, order, writ, injunction, decree or financial assessment (subject, in
the case of financial assessments, to the exhaustion of appeals) of any
Governmental Entity to which a specified Person or its properties or assets, or
its officers, directors, employees, consultants or agents (in their capacities
as such) is subject, including, without limitation, all such statutes, laws,
rules, regulations, judgments, orders, writs, injunctions, decrees and financial
assessments relating to, without limitation, energy regulation, public utility
regulation, securities regulation, consumer protection, equal opportunity,
health care industry regulation, public health and safety, motor vehicle safety
or standards, third party reimbursement (including Medicare and Medicaid),
environmental protection, fire, zoning, building and occupational safety and
health matters and laws respecting employment practices, employee documentation,
terms and conditions of employment and wages and hours.

         "APPROVALS" has the meaning set forth in Section 4.13 of this
Agreement.

         "BENEFIT ARRANGEMENT" means any employment, consulting, severance or
other similar contract, arrangement or policy and each plan, arrangement
(written or oral), program, agreement or commitment providing for insurance
coverage (including without limitation any self-insured arrangements), workers'
compensation, disability benefits, supplemental unemployment benefits, vacation
benefits, retirement benefits, life, health or accident benefits (including
without limitation any "voluntary employees' beneficiary association" as defined
in Section 501(c)(9) of the Code providing for the same or other benefits) or
for deferred compensation, profit-sharing bonuses, stock options, stock
appreciation rights, stock purchases or other forms of incentive compensation or
post-retirement insurance, compensation or benefits which (a) is not a Welfare
Plan, Pension Plan or Multiemployer Plan, (b) is entered into, maintained,
contributed to or required to be contributed to, as the case may be, by the
Company or an ERISA Affiliate or under which the Company or any ERISA Affiliate
may incur any liability, and (c) covers any present or former employees,
directors or consultants of the Company (with respect to their relationship with
such entities).

         "BOARD OF DIRECTORS" means the board of directors of the Company as it
is constituted from time to time in accordance with the terms of this Agreement,
the Certificate of Incorporation and the Amended Bylaws.

         "BYLAWS" means the Bylaws of the Company as in effect on the date
hereof.

         "BUSINESS" means the provision of diagnostic services to the
healthcare industry.  



                                          3
<PAGE>

         "CAPITAL BUDGET PLAN" means, for each Fiscal Year, the plan of the
Company for making Capital Expenditures for such Fiscal Year which has been
approved for such Fiscal Year by either the Executive Committee or a
Supermajority Vote of the Board of Directors.

         "CAPITAL EXPENDITURES" means, for any period, expenditures made by the
Company or any of its Subsidiaries to acquire or construct fixed assets, plant
and Fixtures and Equipment (including additions, improvements, upgrades and
replacements, but excluding repairs) during such period calculated in accordance
with GAAP.

         "CAPITAL LEASE OBLIGATION" means, at the time any determination
thereof is to be made, the amount of the liability in respect of a lease that
would at such time be required to be capitalized on a balance sheet in
accordance with GAAP.

         "CAPITAL STOCK" means (i) in the case of a corporation, corporate
stock, (ii) in the case of an association or business entity, any and all
shares, interests, participations, rights or other equivalents (however
designated) of corporate stock, (iii) in the case of a partnership, partnership
interests (whether general or limited) and (iv) any other interest or
participation that confers on a Person the right to receive a share of the
profits and losses of, or distributions of assets of, the issuing Person.

         "CARLYLE AFFILIATES" means the Purchaser, TC Group, L.L.C., and any
investor in any entity comprising the Purchaser or TC Group, L.L.C. on the date
hereof.

         "CARLYLE TRANSACTION EXPENSES" means the reasonable fees and expenses
incurred by the Purchaser and any Carlyle Affiliate (including, but not limited
to, reasonable fees and expenses of legal counsel, accountants, consultants and
travel expenses in connection with the preparation of this Agreement and the
Purchaser's due diligence examination) relating to this Agreement and the
Transaction, which, together with the GE Transaction Expenses (as such term is
defined in the GE Purchase Agreement) shall be in an amount not to exceed
$500,000.  

         "CENTER OPERATIONS" means the operations of the Company and its
Subsidiaries at the locations identified in Exhibit K hereto. 

         "CERTIFICATE OF INCORPORATION" means the certificate of incorporation
(as defined in Section 104 of the Delaware General Corporation Law) of the
Company in effect on the date hereof, including, without limitation, the Series
B, the Series C and the Series D Certificates of Designation.

         "CHAMPUS" has the meaning set forth in Section 4.34 of this Agreement.

         "CHANGE OF CONTROL" shall be deemed to have occurred (i) at such time
as any person (as defined in Section 13(d)(3) of the Exchange Act but excluding
GE and the Purchaser, individually and collectively) at any time shall directly
or indirectly acquire more than 40% of the voting power of the Common Stock of
the Company, (ii) at such time as during any one (1) year period, individuals
who at the beginning of such period constitute the Company's Board of Directors
cease to constitute at least a majority of such Board of Directors (provided,
however, that a change in directors upon a Type B Event Date shall not be deemed
to cause a Change of 


                                          4
<PAGE>

Control pursuant to this clause (ii)), (iii) upon consummation of a merger or
consolidation of the Company into or with another Person in which the
stockholders of the Company immediately prior to the consummation of such
transaction shall own fifty percent (50%) or less of the voting securities of
the surviving corporation (or the parent corporation of the surviving
corporation where the surviving corporation is wholly-owned by the parent
corporation) immediately following the consummation of such transaction, or (iv)
the sale, transfer or lease of all or substantially all of the assets of the
Company, in any of cases (i), (ii), (iii) or (iv) in a single transaction or
series of related transactions; PROVIDED, that no Change of Control hereunder
with respect to the Company shall be deemed to occur solely by reason of (x) the
ownership by Carlyle or any Carlyle Affiliate thereof or GE or its Affiliates of
the Series C Preferred Stock or any Affiliate thereof of any Capital Stock of
the Company or (y) the conversion of shares of Series B Preferred Stock into
either Series D Preferred Stock (and any change in the Board of Directors
incident thereto) or Common Stock, or (z) the conversion of shares of Series D
Preferred Stock into Common Stock. .

         "CLAIM" has the meaning set forth in Section 8.5 of this Agreement.

         "CLAIM NOTICE" has the meaning set forth in Section 8.5 of this
Agreement.

         "CLOSING" means the time at which this Agreement is executed and
delivered by the parties, the Purchaser purchases the Securities and GE
purchases the GE Warrants and exchanges the Supplemental Service Fee for Series
C Preferred Stock.

         "CLOSING DATE" means the date on which the Closing occurs.

         "CODE" means the Internal Revenue Code of 1986, as it may be amended
from time to time.

         "COMMISSION" means the United States Securities and Exchange
Commission.

         "COMMON EQUITY" means all shares now or hereafter authorized of any
class of common stock of the Company (including the Common Stock) and any other
stock of the Company, however designated, authorized after the date hereof,
which has the right (subject always to prior rights of any class or series of
preferred stock) to participate in any distribution of the assets or earnings of
the Company without limit as to per share amount, but shall not include the
Series A Preferred Stock, the Series B Preferred Stock, the Series C Preferred
Stock or the Series D Preferred Stock.

         "COMMON STOCK" has the meaning set forth in Section 4.2(a) of this
Agreement.

         "COMMON STOCK DIRECTOR" has the meaning set forth in the Certificate
of Incorporation.

         "COMPANY" has the meaning set forth in the Preamble to this Agreement,
and, in addition, with respect to past events, means the Company and its
predecessors.

         "CONVERSION DIRECTOR" has the meaning set forth in the Amended Bylaws.


                                          5
<PAGE>

         "CONVERSION PRICE" means $8.375 per share of Common Stock, subject to
adjustment as set forth in the Series B Certificate of Designation.

         "CONVERTIBLE SECURITIES" shall mean any stock or securities directly
or indirectly convertible into or exchangeable for Common Equity, including,
without limitation, any exchangeable debt securities.

         "CREDIT FACILITY" means the credit facility provided to the Company
pursuant to the terms of the Credit Agreement dated as of October 14, 1997 among
the Company, certain subsidiaries, as guarantors, certain financial institutions
party thereto and NationsBank, N.A., as Agent.

         "CURRENT CUSTOMER" has the meaning set forth in Section 4.21 of this
Agreement.

         "ELIGIBLE HOLDER" has the meaning set forth in Section 6.4 of this
Agreement.  

         "ELIGIBLE SECURITIES" means (i) the Series B Conversion Stock, the
Series C Conversion Stock and the Series D Conversion Stock, (ii) the Warrants
and (iii) any Common Stock of the Company issued or issuable in respect of the
Securities or other securities issued or issuable pursuant to the conversion of
the Securities upon any stock split, stock dividend, recapitalization, merger,
consolidation or similar event.  Securities shall cease to constitute "Eligible
Securities" at such time that they are sold or transferred in a transaction
wherein the transferee does not acquire "restricted securities" within the
meaning of Rule 144 promulgated under the Securities Act.

         "EMPLOYEE PLANS" means all Benefit Arrangements, Multiemployer Plans,
Pension Plans and Welfare Plans.

         "EMPLOYMENT AGREEMENTS" has the meaning set forth in Section 4.8 of
this Agreement.

         "ENCUMBRANCE" means any claim, lien, pledge, option, charge, easement,
security interest, right-of-way, encumbrance or other right of third parties,
and, with respect to any securities, any agreements, understandings or
restrictions affecting the voting rights or other incidents of record or
beneficial ownership pertaining to such securities.

         "ENVIRONMENTAL CONDITION" means the Release or threatened Release of
any Hazardous Material (whether or not upon a Facility or any former facility or
other property and whether or not such Release constituted at the time thereof a
violation of any Environmental Law) as a result of which the Company has or
would reasonably be expected to become liable to any Person or by reason of
which any Facility, any former facility or any of the assets of the Company may
suffer or be subjected to any Encumbrances.

         "ENVIRONMENTAL LAWS" means any and all foreign, federal, state, local
or municipal laws, rules, orders, regulations, statutes, ordinances, codes,
legally binding decrees or other requirements of any Governmental Entity
(including, without limitation, common law) regulating, relating to or imposing
liability or standards of conduct concerning protection of the environment 


                                          6
<PAGE>

or of human health relating to exposure of any kind of Hazardous Materials, as
have been, are now or may at any time hereafter be in effect.

         "ENVIRONMENTAL PERMITS" means any and all permits, licenses,
registrations, notifications, exemptions and any other authorizations required
under any Environmental Law.

         "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended.

         "ERISA AFFILIATE" means any entity which is (or at any relevant time
was) a member of a "controlled group of corporations" with, under "common
control" with, a member of an "affiliated service group" with or otherwise
required to be aggregated with the Company, as set forth in Section 414(b), (c),
(m) or (o) of the Code.

         "EXCHANGE ACT" means the Securities Exchange Act of 1934, as amended.

         "FACILITY" or "FACILITIES" means one or more of the offices and
buildings and all other real property and related facilities which are owned,
leased or operated by the Company or any Subsidiary.

         "FEDERAL HEALTH CARE PROGRAM" has the meaning set forth in Section
4.35 hereof.

         "FINANCIAL STATEMENTS" has the meaning set forth in Section 4.10
hereof.

         "FISCAL YEAR" means each year ending June 30, or any other fiscal year
as approved by the Board of Directors.

         "FIXTURES AND EQUIPMENT" means all of the furniture, fixtures,
furnishings, machinery, equipment and other tangible assets owned by the Company
or any Subsidiary that are material to the conduct of their businesses as
currently conducted.

         "GAAP" means generally accepted accounting principles set forth in the
opinions and pronouncements of the Accounting Principles Board of the American
Institute of Certified Public Accountants and statements and pronouncements of
the Financial Accounting Standards Board, which are in effect as of the date of
this Agreement.

         "GE" means General Electric Company, a New York corporation, and its
Affiliates.

         "GE PURCHASE AGREEMENT" means that certain Securities Purchase
Agreement, of even date herewith, by and between the Company and GE in respect
of the Series C Preferred Stock and the GE Warrants.

         "GE WARRANT AGREEMENT" means that certain Warrant Agreement by and
between the Company and GE substantially in the form attached hereto as Exhibit
G pursuant to which the Company shall issue the GE Warrants to GE.


                                          7
<PAGE>

         "GE WARRANTS" means the warrants to purchase Common Stock to be
acquired by GE at the Closing.  

         "GE WARRANT SHARES" means the Common Stock issuable to GE upon the
exercise of the GE Warrants.  

         "GOVERNMENTAL ENTITY" means any court or tribunal in any jurisdiction
(domestic or foreign) or any federal, state or local public, governmental or
regulatory body, agency, department, commission, board, bureau or other
authority or instrumentality (domestic or foreign).

         "HAZARDOUS MATERIALS" means any hazardous substance, gasoline or
petroleum (including crude oil or any fraction thereof) or petroleum products,
polychlorinated biphenyls, ureaformaldehyde insulation, asbestos or
asbestos-containing materials, pollutants, contaminants, radioactivity and any
other materials or substances of any kind, whether solid, liquid or gas, and
whether or not any such substance is defined as hazardous under any
Environmental Law, that is regulated pursuant to any Environmental Law or that
could give rise to liability under any Environmental Law.

         "HSR ACT" means the Hart-Scott-Rodino Antitrust Improvements Act of
1976, as amended.

         "INDEBTEDNESS" means, as to any Person without duplication, (a) all
items which, in accordance with GAAP, would be included as a liability on the
balance sheet of such Person and its Subsidiaries (including any obligation of
such Person to the issuer of any letter of credit for reimbursement in respect
of any drafts drawn under such letter of credit), excluding (i) obligations in
respect of deferred taxes and deferred employee compensation and benefits, and
(ii) anything in the nature of Capital Stock, surplus capital and retained
earnings; (b) Capital Lease Obligations of such Person; and (c) all obligations
of other Persons that such Person has guaranteed, including, without limitation,
all obligations of such Person consisting of recourse liabilities with respect
to accounts receivable sold or otherwise disposed of by such Person, PROVIDED,
HOWEVER, that the term Indebtedness shall not include trade accounts payable
(other than for borrowed money) arising in, and accrued expenses incurred in,
the ordinary course of business of such Person, provided the same are not more
than sixty (60) days overdue or are being contested in good faith.

         "INDEMNIFIED PARTY" has the meaning set forth in Section 8.2 of this
Agreement.

         "INDEPENDENT" means any person who is not an officer or employee of
the Company or any Subsidiary or other Affiliate of the Company or otherwise
paid any compensation or remuneration by the Company or any Subsidiary or other
Affiliate of the Company other than director's fees.

         "JOINT DIRECTOR" has the meaning set forth in Section 6.13 of this
Agreement.

         "LIABILITY" or "LIABILITIES" means, with respect to any Person, any
liability or obligation of such Person of any kind, character or description,
whether known or unknown, absolute or contingent, accrued or unaccrued,
liquidated or unliquidated, secured or unsecured, 


                                          8
<PAGE>

joint or several, due or to become due, vested or unvested, executory,
determined, determinable or otherwise and whether or not the same is required to
be accrued on the financial statements of such Person.

         "LIQUIDATING EVENT" means (i) the commencement by the Company of a
voluntary case under the bankruptcy laws of the United States, as now or
hereafter in effect, or, if an involuntary case against the Company has been
commenced, the decision by the Company not to timely controvert such petition
and seek its prompt dismissal; (ii) the commencement by the Company of any
proceeding under any reorganization, arrangement, adjustment of debt, relief of
debtors, dissolution, insolvency or liquidation or similar law of any
jurisdiction whether now or hereafter in effect relating to the Company or the
adoption of a plan of liquidation; (iii) if any proceeding set forth in the
preceding clause has been commenced against the Company, the decision by the
Company not to controvert such proceeding and seek its prompt dismissal; or
(iv) any Change of Control (A) pursuant to clauses (i) and (ii) of the
definition thereof if such Change of Control occurred in or as a result of a
transaction or series of related transactions approved by the Board of
Directors, or (B) pursuant to clauses (iii) or (iv) of the definition of Change
of Control; in any of cases (i) through (iv) above, in a single transaction or
series of related transactions.

         "LOSSES" has the meaning set forth in Section 8.2 of this Agreement.

         "MARKET PRICE" means as to any security the average of the closing
prices of any such security's sales on all domestic securities exchanges on
which such security may at the time be listed, or, if there have been no sales
on any such exchange on any day, the average of the highest bid and lowest asked
prices on all such exchanges at the end of such day, or, if on any day such
security is not so listed, the average of the representative bid and asked
prices quoted in Nasdaq as of 4:00 P.M., New York time, on such day, or, if on
any day such security is not quoted in Nasdaq, the average of the highest bid
and lowest asked prices on such day in the domestic over-the-counter market as
reported by the National Quotation Bureau, Incorporated, or any similar
successor organization, in each such case averaged over a period of twenty-one
(21) business days consisting of the day as of which "Market Price" is being
determined and the twenty (20) consecutive business days prior to such day;
provided that if such security is listed on any domestic securities exchange the
term "business days" as used in this sentence means business days on which such
exchange is open for trading.  If at any time such security is not listed on any
domestic securities exchange or quoted in Nasdaq or the domestic
over-the-counter market, the "Market Price" shall be the fair value thereof
determined by the Company and approved by the Purchaser; provided that if such
parties are unable to reach agreement within a reasonable period of time, such
fair value shall be determined by an appraiser jointly selected by the Company
and the Purchaser.  The determination of such appraiser shall be final and
binding on the Company and the Purchaser, and the fees and expenses of such
appraiser shall be paid by the Company.

         "MASTER DEBT RESTRUCTURING AGREEMENT" means that certain Master Debt
Restructuring Agreement dated as of June 26, 1996 by and among GE, General
Electric Capital Corporation, the Company, American Health Services Corp. Maxum
Health Corp. and certain subsidiaries of Maxum Health Corp., as amended through
the date hereof.


                                          9
<PAGE>

         "MATERIAL ADVERSE EFFECT" with respect to any Person means a material
adverse effect on the results of operations, condition (financial or otherwise),
assets, liabilities (whether absolute, accrued, contingent or otherwise) or
business of such Person and its Subsidiaries (if any), taken as a whole.  

         "MATERIAL AGREEMENTS" has the meaning set forth in Section 4.21 of
this Agreement.  

         "MERGER AGREEMENT" means that certain Agreement and Plan of Merger
dated as of February 26, 1996 by and among the Company, American Health Services
Corp., AHSC Acquisition Corp., Maxum Health Corp. and MXHC Acquisition Corp.  

         "MOBILE OPERATIONS" means all operations of the Company and its
Subsidiaries other than Center Operations.  

         "MULTIEMPLOYER PLAN" means any "multiemployer plan," as defined in
Section 400l(a)(3) or 3(37) of ERISA, which (a) the Company or any ERISA
Affiliate maintains, administers, contributes to or is required to contribute
to, or, after September 25, 1980, maintained, administered, contributed to or
was required to contribute to, or under which the Company or any ERISA Affiliate
may incur any liability and (b) covers any employee or former employee of the
Company or any ERISA Affiliate (with respect to their relationship with such
Persons).

         "OPERATING LEASE" shall mean any lease with respect to which the
obligations of the lessee thereunder are, at the time any determination thereof
is to be made, not required to be capitalized on the lessee's balance sheet in
accordance with GAAP.

         "OPTION" shall mean any rights or options to subscribe for or purchase
Common Equity or Convertible Securities.

         "ORDINARY COURSE OF BUSINESS," for purposes of Section 6.12(s) of this
Agreement, means the ordinary course of business for a company engaged in the
business of providing diagnostic services to the health care industry; provided,
however, that all sales by the Company or any Subsidiary, as the case may be, of
inventory and sales of Fixtures and Equipment no longer used or useful in such
business shall be deemed to be in the Ordinary Course of Business.

         "PARITY SECURITIES" has the meaning set forth in Section 2 of the
Series B Certificate of Designation.

         "PBGC" means the Pension Benefit Guaranty Corporation.

         "PENSION PLAN" means any "employee pension benefit plan" as defined in
Section 3(2) of ERISA (other than a Multiemployer Plan) which (a) the Company or
any ERISA Affiliate maintains, administers, contributes to or is required to
contribute to, or, within the five (5) years prior to the Closing Date,
maintained, administered, contributed to or was required to contribute to, or
under which the Company or any ERISA Affiliate may incur any liability and
(b) covers any 


                                          10
<PAGE>

employee or former employee of the Company or any ERISA Affiliate (with respect
to their relationship with such Persons).

         "PERMITS" means all licenses, permits, orders, consents, approvals,
registrations, authorizations, qualifications and filings required by any
federal, state, local or foreign law or regulation or governmental or regulatory
bodies and all industry or other non-governmental self-regulatory organizations.

         "PERMITTED ENCUMBRANCES" means (a) any mechanic's or materialmen's
lien or similar Encumbrances with respect to amounts not yet due and payable or
which are being contested in good faith by appropriate proceedings and for which
appropriate reserves have been established, (b) Encumbrances for Taxes not yet
due and payable or which are being contested in good faith by appropriate
proceedings, for which appropriate reserves have been established,
(c) easements, licenses, covenants, rights of way and similar Encumbrances
which, individually or in the aggregate, would not materially and adversely
affect the marketability or value of the property encumbered thereby or
materially interfere with the operations of the Business and (d) Encumbrances
arising under the Credit Facility.

         "PERSON" means any individual, corporation, partnership, limited
partnership, limited liability partnership, joint venture, association, limited
liability company, joint-stock company, trust, unincorporated organization or
government or agency or political subdivision thereof (including any subdivision
or ongoing business of any such entity or substantially all of the assets of any
such entity, subdivision or business).

         "PRE-CLOSING ENVIRONMENTAL CONDITIONS" means any Environmental
Condition occurring or in existence on or prior to the Closing Date.

         "PREFERRED SHARES" has the meaning set forth in the Recitals to this
Agreement.

         "PREFERRED STOCK DIRECTOR" has the meaning set forth in the Amended
Bylaws.

         "PROCEEDING" means any action, suit, claim, litigation, legal or other
proceeding, whether civil, criminal, administrative, arbitrative or
investigative, any appeal in such an action, suit, claim, litigation, legal or
other proceeding, and any investigation that could reasonably be expected to
lead to such an action, suit, claim, litigation, legal or other proceeding, not
including an audit other than an audit by a Governmental Entity pursuant to any
Applicable Laws relating to health care, the health care industry and the
provision of health care services, third party reimbursement (including Medicare
and Medicaid), public health and safety or wrongful death and medical
malpractice, which shall be included in this definition of "Proceeding."

         "PROPRIETARY RIGHTS" has the meaning set forth in Section 4.25 of this
Agreement.

         "PROXY STATEMENT" means that certain Maxum Health Corp. and American
Health Services Corp. Joint Proxy Statement for Special Meeting of Stockholders
to be held June 25, 1996, dated May 9, 1996.


                                          11
<PAGE>

         "PURCHASER" has the meaning set forth in the Preamble to this
Agreement, and shall include the Purchaser's successors and permitted assigns.

         "REGISTRATION RIGHTS AGREEMENT" means the Registration Rights
Agreement by and among the Company and the Purchaser substantially in the form
attached hereto as Exhibit B.

         "REGULATION D" has the meaning set forth in Section 4.26 of this
Agreement.

         "RELEASE" means and includes any spilling, leaking, pumping, pouring,
emitting, emptying, discharging, injecting, escaping, leaching, dumping or
disposing into the environment or the workplace of any Hazardous Materials, and
otherwise as defined in any Environmental Law.

         "SEC FILINGS" has the meaning set forth in Section 4.9 of this
Agreement.

         "SECOND CLOSING" means the time at which GE converts all of its Series
A Preferred Stock into Series C Preferred Stock.

         "SECOND CLOSING DATE" means the business day after all waiting periods
with respect to GE's filing of a notification under the HSR Act with respect to
the transactions to occur at the Second Closing have expired or have been
terminated and neither the Federal Trade Commission nor the Department of
Justice shall have sent a letter giving notice of its intention to initiate
legal action to prevent such transactions or to seek further information.

         "SECURITIES" means the Preferred Shares and the Warrants.

         "SECURITIES ACT" means the Securities Act of 1933, as amended.

         "SENIOR MANAGEMENT" means such members of the senior management of the
Company as are proposed by the President of the Company and accepted by the
Series B Directors and the Series C Director, which acceptance shall not
unreasonably be withheld.

         "SENIOR SECURITIES" has the meaning set forth in Section 2 of the
Series B Certificate of Designation.

         "SERIES A PREFERRED STOCK" means the Convertible Preferred Stock,
Series A, par value $0.001 per share, of the Company, all of the outstanding
shares of which as of the date of this Agreement are held by GE.

         "SERIES B CERTIFICATE OF DESIGNATION" means the Certificate of
Designation, Preferences and Rights of the Series B Preferred Stock, in the form
attached hereto as Exhibit C.

         "SERIES B CONVERSION SHARES" means the shares of Common Stock
issuable, upon certain conditions, by the Company to the Purchaser in respect of
the Series B Preferred Stock.


                                          12
<PAGE>

         "SERIES B PREFERRED STOCK" means the Convertible Preferred Stock,
Series B, par value $0.001 per share, of the Company, with the rights,
preferences and privileges set forth in the Series B Certificate of Designation.

         "SERIES C CERTIFICATE OF DESIGNATION" means the Certificate of
Designation, Preferences and Rights of the Series C Preferred Stock, in the form
attached hereto as Exhibit D.  

         "SERIES C CONVERSION SHARES" means the shares of Common Stock
issuable, upon certain conditions, by the Company to GE in respect of the Series
C Preferred Stock.

         "SERIES C PREFERRED STOCK" means the Convertible Preferred Stock,
Series C, par value $0.001 per share, of the Company, with the rights,
preferences and privileges set forth in the Series C Certificate of Designation.

         "SERIES D CERTIFICATE OF DESIGNATION" means the Certificate of
Designation, Preferences and Rights of the Series D Preferred Stock, in the form
attached hereto as Exhibit E.

         "SERIES D CONVERSION SHARES" means the shares of Common Stock
issuable, upon certain conditions, by the Company to the Purchaser in respect of
the Series D Preferred Stock.

         "SERIES D PREFERRED STOCK" means the Convertible Preferred Stock,
Series D, par value $0.001 per share, of the Company, with the rights,
preferences and privileges set forth in the Series D Certificate of Designation.

         "SPECIAL CORPORATE EVENT"  shall be deemed to have occurred (i) at
such time as any person (as defined in Section 13(d)(3) of the Exchange Act),
except the Purchaser, any Carlyle Affiliate, GE and/or any Affiliate of GE, at
any time shall directly or indirectly acquire more than twenty percent (20%) of
the voting power of the Common Stock of the Company, (ii) at such time as during
any one (1) year period, individuals who at the beginning of such period
constitute the Company's Board of Directors cease to constitute at least a
majority of such Board (provided, however, that a change in directors upon a
Type B Event Date shall not be deemed to cause a Special Corporate Event
pursuant to this clause (ii)), (iii) upon consummation of a merger or
consolidation of the Company into or with another Person in which the
stockholders of the Company immediately prior to the consummation of such
transaction shall own fifty percent (50%) or less of the voting securities of
the surviving corporation (or the parent corporation of the surviving
corporation where the surviving corporation is wholly-owned by the parent
corporation) immediately following the consummation of such transaction, or (iv)
the sale, transfer or lease of all or substantially all of the assets of the
Company, in any of cases (i), (ii), (iii) or (iv) in a single transaction or
series of related transactions.

         "SSA" has the meaning set forth in Section 4.34 of this Agreement.

         "STATE HEALTH CARE PROGRAM" has the meaning set forth in Section 4.35
of this Agreement.

         "SUBSIDIARY" means (a) any corporation of which at least a majority in
interest of the outstanding voting stock (having by the terms thereof voting
power under ordinary 


                                          13
<PAGE>

circumstances to elect a majority of the directors of such corporation,
irrespective of whether or not at the time stock of any other class or classes
of such corporation shall have or might have voting power by reason of the
happening of any contingency) is at the time, directly or indirectly, owned or
controlled by the Company and/or by one or more Subsidiaries of the Company, or
(b) any corporate or non-corporate entity in which the Company and/or one or
more Subsidiaries of the Company, directly or indirectly, at the date of
determination thereof, has an ownership interest and one hundred percent (100%)
of the revenue of which is included in the consolidated financial reports of the
Company consistent with GAAP.  With respect to past events, a reference to a
Subsidiary shall be a reference to such Subsidiary and its predecessors.

         "SUPERMAJORITY VOTE" means the affirmative vote of six (6) directors
of the Company with respect to the matter subject to such vote.

         "SUPERVOTING SECURITIES" means any class or series of the Company's
Capital Stock the holders of which have the right to cast more than one vote per
share and/or have the right to elect one or more members of the Board of
Directors, voting as a class or series.

         "SUPPLEMENTAL SERVICE FEE" has the meaning set forth in the Recitals
hereof.

         "SUPPLEMENTAL SERVICE FEE TERMINATION AGREEMENT" means the
Supplemental Service Fee Termination Agreement between the Company and the
Purchaser substantially in the form attached hereto as Exhibit L.

         "TAX" or "TAXES" means any federal, state, local or foreign net or
gross income, gross receipts, license, payroll, employment, excise, severance,
stamp, occupation, premium, (including taxes under Section 59A of the Code),
customs duties, capital stock, franchise, profits, withholding, social security
(or similar), unemployment, disability, real property, personal property, sales,
use, transfer, registration, value added, alternative or add-on minimum,
estimated or other tax, governmental fee or like assessment or charge of any
kind whatsoever, including any interest, penalty or addition thereto, whether
disputed or not, imposed by any Governmental Entity or arising under any tax law
or agreement, including, without limitation, any joint venture or partnership
agreement.

         "TAX RETURN" means any return, declaration, report, claim for refund
or information or return or statement relating to Taxes, including any schedule
or attachment thereto, and including any amendments thereof.

         "THIRD PARTY NOTICE" has the meaning set forth in Section 8.5 of this
Agreement.

         "TRANSACTION" means, taken together, the transactions contemplated
under this Agreement and the GE Purchase Agreement, including, without
limitation, the transactions that will occur at the Closing, the initial funding
of the Credit Facility and the Second Closing.

         "TYPE B CONVERSION" has the meaning set forth in the Series B
Certificate of Designation and the Series C Certificate of Designation.


                                          14
<PAGE>

         "TYPE B EVENT DATE" has the meaning set forth in the Series B
Certificate of Designation and the Series C Certificate of Designation.

         "TYPE B TRIGGER DATE" means the date one year after the initial
borrowing of funds under the Credit Facility.

         "WARRANT AGREEMENT" means that certain Warrant Agreement by and
between the Company and the Purchaser substantially in the form attached hereto
as Exhibit F pursuant to which the Company shall issue the Warrants to the
Purchaser.

         "WARRANT CERTIFICATES" means one or more warrant certificates
evidencing the Warrants, in the form attached as an exhibit to the Warrant
Agreement.

         "WARRANTS" means 250,000 warrants, issued pursuant to the Warrant
Agreement, to purchase, initially, an equivalent number of shares of Common
Stock at an initial exercise price of $10.00 per share, expiring on the date
that is the fifth anniversary of the Closing Date.

         "WARRANT SHARES" means the Common Stock issuable upon the exercise of
the Warrants.

         "WELFARE PLAN" means any "employee welfare benefit plan" as defined in
Section 3(1) of ERISA, which (a) the Company or any ERISA Affiliate maintains,
administers, contributes to or is required to contribute to, or under which the
Company or any ERISA Affiliate may incur any liability and (b) covers any
employee or former employee of the Company or any ERISA Affiliate (with respect
to their relationship with such entities).


                                      ARTICLE II
                           PURCHASE AND SALE OF SECURITIES

2.1  PURCHASE AND SALE OF SECURITIES.

         Upon the terms and subject to the conditions contained herein, on the
Closing Date the Company shall sell to the Purchaser and the Purchaser shall
purchase from the Company all of the Securities.

2.2  CONSIDERATION FOR SECURITIES.

         Upon the terms and subject to the conditions contained herein, as
consideration for the purchase of the Securities, on the Closing Date the
Purchaser shall pay to the Company an aggregate purchase price in the amount of
$25,000,000 minus the Carlyle Transaction Expenses and minus a private placement
fee of One Hundred Twenty Five Thousand Dollars ($125,000), payable by wire
transfer of immediately available funds to an account designated by the Company
at least 24 hours before the Closing.  
                                          15
<PAGE>

                                     ARTICLE III
                                       CLOSING

3.1  CLOSING.

         The Closing shall be held at 10:00 a.m. Los Angeles time on the
Closing Date, at the offices of Gibson, Dunn & Crutcher LLP, 333 South Grand
Avenue, Los Angeles, CA 90071, unless the parties hereto otherwise agree.

3.2  DELIVERIES BY THE COMPANY AT THE CLOSING.

         At the Closing, the Company shall issue and deliver to the Purchaser:

         (a)  Certificates evidencing the Preferred Shares in the names of the
Persons comprising the Purchaser (or their assignees), in the respective amounts
as set forth in a written notice provided to the Company by the Purchaser 24
hours in advance; 

         (b)  The Warrant Certificates in the names of the Persons comprising
the Purchaser (or their assignees), in the respective amounts as set forth in a
written notice provided to the Company by the Purchaser;

         (c)  The Ancillary Agreements; 

         (d)  The certificates, opinions of counsel and other documents
described in Article VII of this Agreement; and

         (e)  All such other documents and instruments as the Purchaser or its
counsel shall reasonably request to consummate the Closing.

3.3  DELIVERIES BY THE PURCHASER AT THE CLOSING.

         At the Closing, the Purchaser shall deliver to the Company:

         (a)  Wire transfer of immediately available funds as provided in
Section 2.2;

         (b)  The Ancillary Agreements; 

         (c)  The certificates, opinions of counsel and other documents
described in Article VII of this Agreement; and 

         (d)  All such other documents and instruments as the Company or its
counsel shall reasonably request to consummate the Closing.

3.4  SECOND CLOSING.

         The parties contemplate that the Second Closing shall occur on the
Second Closing Date.  At the Second Closing, all of GE's shares of Series A
Preferred Stock shall be converted into Series C Preferred Stock.


                                          16
<PAGE>

3.5  FORM OF DOCUMENTS AND INSTRUMENTS.

         All of the documents and instruments delivered at the Second Closing
shall be in form and substance, and shall be executed and delivered in a manner,
reasonably satisfactory to the respective counsel of the Purchaser and the
Company.

                                      ARTICLE IV
                    REPRESENTATIONS AND WARRANTIES OF THE COMPANY

         The Company represents and warrants to the Purchaser as follows:

4.1  ORGANIZATION OF THE COMPANY. 

         (a)  The Company is a corporation duly organized, validly existing and
in good standing under the laws of the State of Delaware and has all requisite
corporate power and authority to own, lease and operate its properties and
assets and to carry on its business as presently being conducted and as proposed
to be conducted.  No actions or Proceedings to dissolve the Company are pending
or, to the Knowledge of the Company, threatened.  The copies of the Certificate
of Incorporation and Amended Bylaws heretofore delivered by the Company to TC
Group, L.L.C. are accurate and complete as of the date hereof.  The Company is
duly qualified or licensed to do business as a foreign corporation and is in
good standing in each jurisdiction in which the property owned, leased or
operated by it or the conduct of its business requires such qualification or
licensing, except where the failure to do so taken in the aggregate would not
have a Material Adverse Effect on the Company.  The Certificate of Incorporation
and the Amended Bylaws of the Company comply in all material respects with
Delaware law.

         (b)  Each Subsidiary is a corporation or other business entity duly
organized, validly existing and in good standing under the laws of its
jurisdiction of organization, and has all requisite power and authority to own,
lease and operate its properties and assets and to carry on its business as
presently being conducted and as proposed to be conducted.  Except as set forth
in Schedule 4.1(b), each Subsidiary is duly qualified or licensed to do business
as a foreign corporation and is in good standing in each jurisdiction in which
the property owned, leased or operated by it or the conduct of its business
requires such qualification or licensing, except where the failure to do so
would not have a Material Adverse Effect on the Company.  The terms and
provisions of the organizational documents of each Subsidiary comply in all
material respects with the laws of such Subsidiary's jurisdiction of
incorporation.

4.2  CAPITALIZATION OF THE COMPANY.

         (a)  The authorized Capital Stock of the Company consists of: 
(i) Twenty-Five Million (25,000,000) shares of common stock, par value $0.001
per share (the "Common Stock"), Two Million Seven Hundred Fourteen Thousand
Seven Hundred Twenty Five (2,714,725) shares of which will be issued and
outstanding immediately after the Closing Date; (ii) Three Million Five Hundred
Thousand (3,500,000) shares of preferred stock, of which (A) Two Million Five
Hundred One Thousand Seven Hundred Sixty (2,501,760) shares of Series A
Preferred Stock are issued and outstanding as of the date hereof, all of which
shares are expected to be exchanged at 


                                          17
<PAGE>

the Second Closing for shares of Series C Preferred Stock so that no shares of
Series A Preferred Stock are expected to be outstanding immediately after the
Second Closing Date; (B) Twenty Five Thousand (25,000) shares of Series B
Preferred Stock which will be designated and authorized as of the Closing Date,
all of which will be issued and outstanding immediately after the Closing Date;
(C) Twenty Seven Thousand Nine Hundred Fifty Three (27,953) shares of Series C
Preferred Stock which will be designated and authorized as of the Closing Date,
Seven Thousand (7,000) shares of which will be issued and outstanding
immediately after the Closing Date and all of which are expected to be issued
and outstanding immediately after the Second Closing Date; and (D) Six Hundred
Thirty Two Thousand Two Hundred Sixty Six (632,266) shares of Series D Preferred
Stock which will be designated and authorized as of the Closing Date, no shares
of which will be issued and outstanding immediately after the Closing Date.  All
outstanding shares of Capital Stock of the Company are fully paid,
non-assessable, free and clear of all Encumbrances and have been issued in
compliance with all state and federal securities laws.  Except for the Series B
Preferred Stock, the Series C Preferred Stock and the Series D Preferred Stock,
none of such shares is subject to, nor has been issued in violation of, any
preemptive rights.

         (b)  The Company has not become subject to any commitment or
obligation, either absolute or conditional, matured or unmatured, vested or not
yet vested, to issue, deliver or sell, or cause to be issued, delivered or sold,
under offers, stock option agreements, stock bonus agreements, stock purchase
plans, incentive compensation plans, warrants, options, calls, conversion rights
or otherwise, any shares of the Capital Stock or other securities of the Company
including securities or obligations convertible into or exchangeable for any
shares of Capital Stock, other equity securities or ownership interests, upon
payment of any consideration or otherwise, except for (i) the commitments and
obligations of the Company pursuant to this Agreement, the Warrant Agreement,
the GE Purchase Agreement, the GE Warrant Agreement, the Series B Certificate of
Designation and the Series C Certificate of Designation; (ii) the issuance, sale
or grant of the options outstanding on the date hereof to Senior Management and
directors of the Company set forth on SCHEDULE 4.2 hereto; (iii) the warrants
outstanding on the date hereof set forth on SCHEDULE 4.2 hereto; (iv) as set
forth on SCHEDULE 4.2 hereto, the number of shares of Capital Stock (all of
which are included in the Two Million Seven Hundred Fourteen Thousand Seven
Hundred Twenty Five (2,714,725) outstanding shares of Common Stock stated in
Section 4.2(a)) as to which the Company would be required to issue new stock
certificates if all stock certificates were now surrendered that represented
shares of Capital Stock of American Health Services Corp. or Maxum Health Corp.
(constituent corporations in the mergers contemplated by the Merger Agreement)
that either were outstanding immediately prior to such mergers or that were
issuable pursuant to any commitment or obligation of either of such constituent
corporations, either absolute or conditional, matured or unmatured, vested or
not yet vested, to issue, deliver or sell, or cause to be issued, delivered or
sold, under offers, stock option agreements, stock bonus agreements, stock
purchase plans, incentive compensation plans, warrants, options, calls,
conversion rights or otherwise; and (v) as set forth on SCHEDULE 4.2, and to the
extent not otherwise described in clause (iv) of this Section 4.2, the number of
shares of Capital Stock of the Company that would be required to be issued if
the surviving corporations of such mergers were to give their written approval
(pursuant to Section 262(k) of the Delaware General Corporation Law), to holders
of shares of Capital Stock of such constituent corporations who exercised their
appraisal rights with respect to such shares, to withdraw such holders' 


                                          18
<PAGE>

demands for appraisal and accept such mergers.  Except as provided in this
Agreement, the Company is not a party or subject to any agreement or
understanding and, to the Company's Knowledge, there is no agreement or
understanding between any Persons and/or entities, that affects or relates to
the voting or giving of written consents with respect to any of the Company's
voting securities.

         (c)  Upon issuance to the Purchaser of the Twenty-Five Thousand
(25,000) shares of Series B Preferred Stock to be issued hereunder, if the
Purchaser were to immediately convert such shares into Common Stock, such shares
of Common Stock would represent Twenty Eight and Four-Tenths Percent (28.4%) of
the Common Stock of the Company on a fully diluted basis.  Such percentage shall
equal one hundred (100) times the following quotient.  The numerator of such
quotient shall be the number of shares of Common Stock that the Purchaser would
be entitled to receive if the Purchaser were to convert into Common Stock,
immediately following the Closing and pursuant to the terms of the Series B
Certificate of Designation, all of the shares of Series B Preferred Stock the
Purchaser is to receive at the Closing pursuant to the terms of this Agreement. 
The denominator of such quotient shall equal the sum of (1) such numerator, plus
(2) the number of shares of Common Stock that would need to be issued if all of
the shares of Series C Preferred Stock to be issued pursuant to the GE Purchase
Agreement (whether issuable at the Closing or at the Second Closing) were
converted into Common Stock, pursuant to the terms of the Series C Certificate
of Designation, plus (3) the number of shares of Common Stock that would need to
be issued if the all of the Warrants and GE Warrants were exercised in full,
plus (4) the maximum number of shares of Common Stock that would need to be
issued if all of the issuances of Capital Stock contemplated in clauses (ii),
(iii), (iv) and (v) of Section 4.2(b) were to occur immediately following the
Closing plus (5) all shares of Common Stock issued and outstanding on the
Closing Date.  The calculation in the immediately preceding sentence shall be
made as if all issuances of Common Stock referred to in clauses (1), (2), (3),
(4) and (5) thereof were made immediately following the Closing, whether or not
the Company is or could be under any obligation to issue such shares of Common
Stock immediately following the Closing. 

4.3  AUTHORIZATION OF ISSUANCE. 

         The rights, preferences, privileges and restrictions of the Series B
Preferred Stock are as stated in the Series B Certificate of Designation.  The
rights, preferences, privileges and restrictions of the Series C Preferred Stock
are as stated in the Series C Certificate of Designation.  The rights,
preferences, privileges and restrictions of the Series D Preferred Stock are as
stated in the Series D Certificate of Designation.  Upon consummation of the
Transaction, the Securities acquired by the Purchaser from the Company will be
duly authorized and validly issued, fully paid and non-assessable and not
subject to any preemptive rights except as set forth in the Series B Certificate
of Designation, and the Purchaser will have good and marketable title to such
Securities, free and clear of any Encumbrances or preemptive rights.  Upon
consummation of the Transaction, the Series B Conversion Shares and the Series
C Conversion Shares (and the Series D Conversion Shares, which will not be
issued to the extent that Series B Conversion Shares and Series C Conversion
Shares are issued) will be duly authorized and reserved for issuance and upon
conversion in accordance with the terms of the Series B Preferred Stock and the
Series C Preferred Stock (and the Series D Preferred Stock), respectively, will
be validly 


                                          19
<PAGE>

issued, fully paid and non-assessable and not subject to any preemptive rights
except as set forth in the Series B Certificate of Designation and the Series C
Certificate of Designation (and the Series D Certificate of Designation),
respectively, and the Purchaser will have good and marketable title to the
Series B Conversion Shares (and the Series D Conversion Shares), free and clear
of any Encumbrances or preemptive rights.  Upon consummation of the Transaction,
the Warrant Shares and the GE Warrant Shares will be duly authorized and
reserved for issuance and, upon exercise of the Warrants or the GE Warrants, as
the case may be, and when issued and paid for in accordance with the terms of
the Warrants or the GE Warrants, as the case may be, will be validly issued,
fully paid and non-assessable and not subject to any preemptive rights, and the
Purchaser will have good and marketable title to the Warrant Shares, free and
clear of any Encumbrances or preemptive rights.

4.4  AUTHORIZATION.

         The Company has full corporate power and authority to execute and
deliver this Agreement, the GE Purchase Agreement and the Ancillary Agreements
and to consummate the Transaction.  The execution and delivery by the Company of
this Agreement, the GE Purchase Agreement and the Ancillary Agreements and the
consummation by it of the Transaction, have been duly authorized by all
necessary corporate action of the Company.  This Agreement, the GE Purchase
Agreement and each Ancillary Agreement has been duly executed and delivered by
the Company and each constitutes a valid and legally binding obligation of the
Company, enforceable against the Company in accordance with its terms, except
that such enforceability may be limited by (i) applicable bankruptcy,
insolvency, reorganization, moratorium, and similar laws affecting creditors'
rights generally, and (ii) general equitable principles (regardless of whether
such enforceability is considered in a proceeding in equity or at law).  No
approval or consent of the Company's stockholders for this Agreement, the GE
Purchase Agreement, the Ancillary Agreements or the consummation of the
Transaction is required.  

4.5  NONCONTRAVENTION.

         The execution and delivery by the Company of this Agreement, the GE
Purchase Agreement and the Ancillary Agreements and the consummation by it of
the Transaction do not and will not (i) conflict with or result in a violation
of any provision of the Certificate of Incorporation or the Amended Bylaws, or
the charter, bylaws or other governing instruments of any Subsidiary,
(ii) materially conflict with or result in a material violation of any provision
of, constitute (with or without the giving of notice or the passage of time or
both) a material default under or give rise (with or without the giving of
notice or the passage of time or both) to any loss of material benefit or of any
right of termination, cancellation or acceleration under, any Material
Agreement, (iii) result in the creation or imposition of any material
Encumbrance upon the properties of the Company or any Subsidiary, or
(iv) violate in any material respect any Applicable Law binding upon the Company
or any Subsidiary.

4.6  CONSENTS.

         No material consent, approval, order, authorization of or declaration,
filing or registration with any Governmental Entity is required to be obtained
or made by the Company or 


                                          20
<PAGE>

any Subsidiary in connection with the execution and delivery by the Company of
this Agreement, the GE Purchase Agreement and the Ancillary Agreements or the
consummation of the Transaction, other than (a) compliance with any applicable
requirements of the Securities Act; (b) compliance with any applicable
requirements of the Exchange Act; (c) compliance with any applicable state
securities laws and (d) compliance with applicable provisions of the HSR Act. 
Except as set forth on SCHEDULE 4.6, no material consent or approval of any
Person is required to be obtained or made by the Company or any Subsidiary in
connection with the execution and delivery by the Company of this Agreement, the
GE Purchase Agreement and the Ancillary Agreements or the consummation of the
Transaction.

         In addition, no consent, approval, order, authorization of or
declaration, filing or registration with any Governmental Entity is required to
be obtained or made by the Company or any Subsidiary that could affect the
validity of the issuance of the Series B Preferred Stock, the Series C Preferred
Stock, the Series D Preferred Stock, the Warrants, the GE Warrants, the Warrant
Shares or the GE Warrant Shares, other than (a) compliance with any applicable
requirements of the Securities Act; (b) compliance with any applicable
requirements of the Exchange Act; and (c) compliance with any applicable state
securities laws; and (d) compliance with applicable provisions of the HSR Act. 
Except as set forth on SCHEDULE 4.6, no consent or approval of any Person is
required to be obtained or made by the Company or any Subsidiary that could
affect the validity of the issuance of the Series B Preferred Stock, the Series
C Preferred Stock, the Series D Preferred Stock, the Warrants, the GE Warrants,
the Warrant Shares or the GE Warrant Shares.

4.7  SUBSIDIARIES.

         (a)  Except as otherwise set forth on SCHEDULE 4.7, the Company does
not own, directly or indirectly, more than five percent (5%) of the Capital
Stock or other securities of any Person or have any direct or indirect equity or
ownership interest of more than five percent (5%) in any other Person, other
than its Subsidiaries.  SCHEDULE 4.7 lists each Subsidiary as of the date
hereof, its respective jurisdiction of incorporation and the jurisdictions in
which it is qualified to do business, the number of shares, partnership or other
equity interests and the percentage ownership interest held by the Company in
each such Subsidiary.  Except as otherwise indicated on SCHEDULE 4.7, no actions
or other Proceedings to dissolve any Subsidiary are pending.

         (b)  Except as otherwise indicated on SCHEDULE 4.7, all the
outstanding Capital Stock or other equity interests of each Subsidiary is owned
directly or indirectly by the Company, free and clear of all Encumbrances and
restrictions on voting, sale or disposition.  All outstanding shares of Capital
Stock of each Subsidiary have been validly issued and are fully paid and
non-assessable.  No shares of Capital Stock or other equity interests of any
Subsidiary are subject to, nor have any been issued in violation of, preemptive
or similar rights.

         (c)  Except for shares of common stock owned by the Company or any
Subsidiary and as set forth on SCHEDULE 4.7, there are outstanding (i) no shares
of Capital Stock or other voting securities of any Subsidiary; (ii) no
securities of any Subsidiary convertible into or exchangeable for shares of
Capital Stock or other voting securities of any Subsidiary; (iii) no
subscriptions, options, warrants, calls, commitments, preemptive rights or other
rights of any kind 


                                          21
<PAGE>

to acquire Capital Stock or other voting securities from any Subsidiary, and no
obligation of any Subsidiary to issue or sell, any shares of Capital Stock or
other voting securities of any Subsidiary or any securities of any Subsidiary
convertible into or exchangeable for such Capital Stock or voting securities;
and (iv) no equity equivalents, interests in the ownership or earnings or other
similar rights of or with respect to any Subsidiary to repurchase, redeem or
otherwise acquire any shares of Capital Stock or any other securities of the
type described in clauses (i)-(iv) above.  No Subsidiary holds shares of its
Capital Stock in its treasury.

4.8  EMPLOYEE BENEFIT PLANS AND OTHER AGREEMENTS.

         (a)  SCHEDULE 4.8 contains a complete list of Employee Plans.  True
and complete copies of each of the following Employee Plan documents have been
delivered or made available by the Company to the Purchaser:  (i) each Employee
Plan document (and, if applicable, related trust agreements and all annuity
contracts or other funding instruments) and all amendments thereto, all
reasonably available written descriptions thereof which have been distributed to
the Company's employees and those of its ERISA Affiliates during the last
thirty-six (36) months and a reasonably detailed description of any Employee
Plan which is not in writing,, (ii) the most recent determination or opinion
letter issued by the Internal Revenue Service with respect to each Pension Plan
and each Welfare Plan (other than a Multiemployer Plan), (iii) for the three (3)
most recent plan years, Annual Reports on Form 5500 Series required to be filed
with any governmental agency for each Pension Plan, (iv) a description setting
forth the amount of any liability of the Company as of the Closing Date for
payments more than thirty (30) calendar days past due with respect to each
Welfare Plan.

         (b)  EMPLOYEE PLANS.

              (i)   PENSION PLANS.

                    (A)    No Pension Plan is or has been subject to Title IV
         of ERISA or Section 412 of the Code.

                    (B)    Each Pension Plan and each related trust agreement,
         annuity contract or other funding instrument is qualified and
         tax-exempt under the provisions of Code Sections 401(a) (or 403(a), as
         appropriate) and 501(a) and has been so qualified during the period
         from its adoption to date.

                    (C)    Each Pension Plan and each related trust agreement,
         annuity contract or other funding instrument presently complies and
         has been maintained in compliance, in all material respects, with its
         terms and, both as to form and in operation, with the requirements
         prescribed by any and all Applicable Laws, including without
         limitation ERISA and the Code.

              (ii)  MULTIEMPLOYER PLANS.

                    (A)    Neither the Company nor any ERISA Affiliate has, at
         any time within the last seventy-two (72) months, maintained,
         contributed to or been obligated to maintain or contribute to, or
         withdrawn from, a Multiemployer Plan.


                                          22
<PAGE>

              (iii) WELFARE PLANS.

                    (A)    Each Welfare Plan presently complies and has been
         maintained in compliance, in all material respects, with its terms
         and, both as to form and operation, with the requirements prescribed
         by any and all statutes, orders, rules and regulations which are
         applicable to such Welfare Plan, including, without limitation, ERISA
         and the Code.

                    (B)    Except as disclosed on SCHEDULE 4.8, none of the
         Company, any ERISA Affiliate or any Welfare Plan has any present or
         future obligation to make any payment to, or with respect to any
         present or former employee of the Company or any ERISA Affiliate
         pursuant to, any retiree medical benefit plan or other retiree Welfare
         Plan, and no condition exists which would prevent the Company from
         amending or terminating any such benefit plan or Welfare Plan.

                    (C)    Each Welfare Plan which is a "group health plan," as
         defined in Section 607(1) of ERISA, has been operated in compliance
         with provisions of Part 6 of Title I, Subtitle B of ERISA and 4980B of
         the Code at all times.  The Company is not obligated to provide health
         care benefits of any kind to its retired or former employees or their
         dependents pursuant to any agreement or understanding.

              (iv)  BENEFIT ARRANGEMENTS.  Each Benefit Arrangement has been
    maintained in compliance, in all material respects, with its terms and with
    the requirements prescribed by any and all statutes, orders, rules and
    regulations which are applicable to such Benefit Arrangement, including
    without limitation, the Code, and with all plan documents.  Except as set
    forth in SCHEDULE 4.8 and except as provided by law, the employment of all
    persons presently employed or retained by the Company is terminable at
    will.

              (v)   UNRELATED BUSINESS TAXABLE INCOME.  No Employee Plan (or
    trust or other funding vehicle pursuant thereto) is subject to any Tax
    under Section 511 of the Code.

              (vi)  DEDUCTIBILITY OF PAYMENTS.  Except as disclosed in
    SCHEDULE 4.8, there is no contract, agreement, plan or arrangement covering
    any present or former employee, director or consultant of the Company or
    any of its ERISA Affiliates (with respect to his or her relationship with
    such entities) that, individually or collectively, provides for the payment
    by the Company of any amount (i) that is not deductible under
    Section 162(a)(l) or 404 of the Code or (ii) that is an "excess parachute
    payment" pursuant to Section 280G of the Code.

              (vii) FIDUCIARY DUTIES AND PROHIBITED TRANSACTIONS.  Neither the
    Company nor any plan fiduciary of any Welfare Plan or Pension Plan has
    engaged in any transaction in violation of Sections 404 or 406 of ERISA or
    any "prohibited transaction," as defined in Section 4975(c)(1) of the Code,
    for which no exemption exists under Section 


                                          23
<PAGE>

    408 of ERISA or Section 4975(c)(2) or (d) of the Code, or has otherwise
    violated the provisions of Part 4 of Title I, Subtitle B of ERISA.  The
    Company has not participated in a violation of Part 4 of Title I, Subtitle
    B of ERISA by any plan fiduciary of any Welfare Plan or Pension Plan.  The
    Company has not been assessed any civil penalty under Section 502(1) of
    ERISA.

              (viii)  VALIDITY AND ENFORCEABILITY.  Each Welfare Plan related
    trust agreement, annuity contract or other funding instrument is legally
    valid, binding, enforceable against the Company and in full force and
    effect, except as enforceability may be limited by (i) applicable
    bankruptcy, insolvency, reorganization, moratorium, and similar laws
    affecting creditors' rights generally, and (ii) general equitable
    principles (regardless of whether such enforceability is considered in a
    proceeding in equity or at law).

              (ix)    LITIGATION.  There is no Proceeding relating to or
    seeking benefits under any Employee Plan that is pending, or, to the
    Knowledge of the Company, threatened against the Company, any ERISA
    Affiliate or any Employee Plan other than routine claims for benefits.

              (x)     NO AMENDMENTS.  Except as disclosed in Schedule 4.8,
    neither the Company nor any ERISA Affiliate has any announced plan or
    legally binding commitment to create any additional Employee Plans which
    are intended to cover present or former employees, directors or consultants
    of the Company or any of its ERISA Affiliates (with respect to their
    relationship with such Persons) or to amend or modify any existing Employee
    Plan.  Each Employee Plan can be amended or terminated at any time without
    approval from any Person, without advance notice and without any liability
    other than for benefits accrued prior to such amendments or termination.

              (xi)    NO OTHER MATERIAL LIABILITY.  To the Knowledge of the
    Company, no event has occurred in connection with which the Company or any
    ERISA Affiliate or any Employee Plan, directly or indirectly, could be
    subject to any material liability (A) under any statute, regulation or
    governmental order relating to any Employee Plan or (B) pursuant to any
    obligation of the Company to indemnify any person against liability
    incurred under any such statute, regulation or order as they relate to the
    Employee Plans.

              (xii)   INSURANCE CONTRACTS.  Neither the Company nor any
    Employee Plan (other than a Multiemployer Plan) holds as an asset of any
    Employee Plan any interest in any annuity contract, guaranteed investment
    contract or any other investment or insurance contract issued by an
    insurance company that is the subject of bankruptcy, conservatorship or
    rehabilitation proceedings.

              (xiii)  NO ACCELERATION OR CREATION OF RIGHTS.  Except as
    disclosed on Schedule 4.8, neither the execution and delivery of this
    Agreement by the Company nor the consummation of all or any portion of the
    Transaction will result in the acceleration or creation of any rights of
    any person to benefits under any Employee Plan (including, without
    limitation, the acceleration of the vesting or exercisability of any stock
    options, 


                                          24
<PAGE>

    the acceleration of the vesting of any restricted stock, the acceleration
    of the accrual or vesting of any benefits under any Pension Plan or the
    acceleration or creation of any rights under any severance, parachute or
    change in control agreement).

         (c)  There are no employment, consulting, change of control, severance
pay, continuation pay, termination pay, loans, guarantees or indemnification
agreements or other similar agreements of any nature whatsoever (collectively,
"Employment Agreements") between the Company, on the one hand, and any current
or former stockholder, officer, director, employee or Affiliate of the Company
or any consultant or agent of the Company, on the other hand, that, as a direct
result of the Transaction, (i) will require any payment by the Company or any
consent or waiver from any stockholder, officer, director, employee or Affiliate
of the Company or any consultant or agent of the Company, or (ii) will result in
any change in the nature of any rights of any stockholder, officer, director,
employee or Affiliate of the Company or any consultant or agent of the Company
under any such Employment Agreement or other similar agreement (including,
without limitation, any accelerated payments, deemed satisfaction of goals or
conditions, new or increased benefits or additional or accelerated vesting).

4.9  GOVERNMENTAL FILINGS.

         (a)  Since June 30, 1994, the Company and each of its Subsidiaries
have filed with the Commission all forms, reports, schedules, statements and
other documents required to be filed by them under the Securities Act, the
Exchange Act and all other federal securities laws and the rules and regulations
promulgated thereunder (the "SEC Filings").  Each SEC Filing was prepared in
accordance with, and at the time of filing complied in all material respects
with, the requirements of the Securities Act, the Exchange Act or other
applicable federal securities law and the rules and regulations promulgated
thereunder, as the case may be, except as the same was corrected or superseded
in an amendment to such SEC Filing filed with the Commission.  None of the SEC
Filings, including, without limitation, any financial statements or schedules
included therein, at the time filed, contained any untrue statement of a
material fact or omitted to state any material fact required to be stated
therein or necessary in order to make the statements contained therein, in light
of the circumstances under which they were made, not misleading, except as the
same was corrected or superseded in a subsequent document duly filed with the
Commission.  The Company has heretofore furnished or made available to the
Purchaser true, correct and complete copies of all SEC Filings since June 30,
1996.  

         (b)  Since June 30, 1992, all material reports, documents and notices
required to be filed, maintained or furnished to any Governmental Entity (other
than the Commission) by the Company or any Subsidiary have been so filed,
maintained or furnished.  All such reports, documents and notices were complete
and correct in all material respects on the date filed (or were corrected in or
superseded by a subsequent filing) such that no Liabilities exist with respect
to such filing.  

4.10 FINANCIAL STATEMENTS AND REPORTS.  

         (a)  The financial statements contained in the SEC Filings
(collectively, the "Financial Statements") have been prepared in accordance with
GAAP applied on a consistent 


                                          25
<PAGE>

basis throughout the periods indicated and with each other (except that the
Financial Statements may not contain all footnotes required by GAAP) and fairly
present the consolidated financial condition of the Company and the Subsidiaries
and the consolidated results of operations as of such dates and for such periods
indicated.  Since April 30, 1997, there has not been any change to the financial
condition of the Company or any Subsidiary as set forth in the Financial
Statements that would have a Material Adverse Effect on the Company.  Except as
reflected in the Financial Statements, neither the Company nor any Subsidiary is
a guarantor or indemnitor of any Indebtedness of any other Person.  The Company
maintains a standard system of accounting established and administered in
accordance with GAAP.  The general ledger, accounts receivable, accounts
payable, bank reconciliations and payroll records of the Company have been
maintained in all material respects in the ordinary course and contain a
materially correct and complete record of the matters typically contained in
records of such nature.

         (b)  The Company has not received any management letters or other
letters (other than audit letters included in the SEC Filings) from the
Company's independent auditing firm(s) relating to the results of operations,
financial statements or internal controls of the Company or any Subsidiary
insofar as the same may pertain to the business or assets of the Company and any
Subsidiary during any period from and after June 30, 1994.  

4.11 ABSENCE OF UNDISCLOSED LIABILITIES: GUARANTEES.

         (a)  Except as set forth in the Financial Statements or as set forth
on SCHEDULE 4.11:  (i) as of April 30, 1997, neither the Company nor any
Subsidiary had any Liabilities or obligations (whether accrued, absolute,
contingent, unliquidated or otherwise) which are reasonably expected to have,
individually or in the aggregate, a Material Adverse Effect on the Company, and
(ii) since April 30, 1997, the Company and its Subsidiaries, taken as a whole,
have not incurred any such Liabilities or obligations that have had a Material
Adverse Effect on the Company.

         (b)  Except as set forth on SCHEDULE 4.11, neither the Company nor any
Subsidiary is a party to (i) any Material Agreement relating to the making of
any advance to, or investment in, any Person, or (ii) any Material Agreement
providing for a guarantee or other contingent liability with respect to any
Indebtedness or similar obligation of any Person.

4.12 ABSENCE OF CERTAIN CHANGES. 

         Since April 30, 1997, except as reflected in the Financial Statements
or the SEC Filings, neither the Company nor any Subsidiary has (i) declared or
paid any dividends, or authorized or made any distribution upon or with respect
to any class or series of its Capital Stock; (ii) made Capital Expenditures or
commitments therefor, other than such Capital Expenditures or commitments made
in the ordinary course consistent with past practice; (iii) made any loans or
advances to any Person exceeding $5,000 individually or $25,000 in the aggregate
(other than advances for business or travel expenses) or guaranteed the
obligations of any Person; (iv) sold, exchanged or otherwise disposed of any of
its assets or rights exceeding $5,000 individually or $25,000 in the aggregate,
other than the sale, exchange or other disposition of its equipment and services
in the ordinary course of business consistent with past practice; 


                                          26
<PAGE>

(v) incurred any material change in the assets, Liabilities, financial
condition, operating results or Business of the Company from that reflected in
the Financial Statements, except changes that have not, in the aggregate, had a
Material Adverse Effect on the Company; (vi) suffered any damage, destruction or
loss, whether or not covered by insurance, that had or would have a Material
Adverse Effect on the Company; (vii) waived a right or a debt owed to it
exceeding $1,000 individually or $5,000 in the aggregate, except in the ordinary
course of business consistent with past practice; (viii) satisfied or discharged
any Encumbrance or payment of any obligation, except in the ordinary course of
business consistent with past practice and that has not had and is not
reasonably expected to have a Material Adverse Effect on the Company;
(ix) agreed to or made any material change or amendment to any Material
Agreement, except in the ordinary course of business consistent with past
practice; (x) except as set forth in SCHEDULE 4.12 (X), made any material change
in any compensation arrangement or agreement with any employee that would
increase such employees' compensation by more than ten percent (10%);
(xi) permitted or allowed any of its assets to be subjected to any material
Encumbrance, other than Encumbrances on equipment in the ordinary course of
business consistent with past practice; (xii) written up the value of any
inventory, notes or accounts receivable or other assets in any material respect;
(xiii) licensed, sold, transferred, pledged, modified, disclosed, disposed of or
permitted to lapse any right to the use of any Proprietary Rights; (xiv) made
any change in any method of accounting or accounting practice or any change in
depreciation or amortization policies or rates previously adopted; (xv) paid,
lent or advanced any amount to, sold, transferred or leased any assets to or
entered into any material agreement or material arrangement with any of its
Subsidiaries or GE (except for the GE Purchase Agreement, the GE Registration
Rights Agreement, the GE Warrant Agreement and related documents) or entered
into any agreement or arrangement whatsoever with any of its Affiliates other
than its Subsidiaries and GE, except for directors' fees, travel expense
advances and employment compensation to officers; or (xvi) incurred or suffered
any other event or condition of any character that could reasonably be expected
to have a Material Adverse Effect on the Company.  

4.13 COMPLIANCE WITH LAWS.

         (a)  The Company and its Subsidiaries are in compliance in all
material respects with all material Applicable Laws.  Material Applicable Laws
includes, without limitation, all Applicable Laws relating to health care, the
health care industry and the provision of health care services, third party
reimbursement (including Medicare and Medicaid), public health and safety and
wrongful death and medical malpractice.  Neither the Company nor any of its
Subsidiaries has received any notice of, nor does the Company or any of its
Subsidiaries have any Knowledge of, any violation (or of any investigation,
inspection, audit or other proceeding by any Governmental Entity involving
allegations of any violation) of any Applicable Law involving or related to the
Company or any of its Subsidiaries which has not been dismissed or otherwise
disposed of.  Except as set forth in SCHEDULE 4.13(a), neither the Company nor
any of its Subsidiaries has received notice or otherwise has any Knowledge that
the Company or any Subsidiary is charged with, threatened with or under
investigation with respect to, any violation of any Applicable Law, or has any
Knowledge of any proposed change in any Applicable Law that would have a
Material Adverse Effect on the Transaction or the Company.


                                          27
<PAGE>

         (b)  Each of the Company and its Subsidiaries has, and all
professional employees or agents of each of the Company and its Subsidiaries who
are performing health care or health care related functions on behalf of the
Company or any of its Subsidiaries or joint ventures have, all material
licenses, franchises, permits, accreditations, provider numbers, authorizations,
including certificates of need, consents or orders of, or filings with, or other
approvals from all Governmental Entities ("Approvals") necessary for the conduct
of, or relating to the operation of, the business of each of the Company and its
Subsidiaries and the occupancy and operation, for its present uses, of the real
and personal property which each of the Company and its Subsidiaries owns or
leases, and neither the Company nor any Subsidiary or the professional employees
or agents of either (acting in such capacities) is in violation of any such
Approval in any material respect or any terms or conditions thereof.  All such
Approvals are in full force and effect, have been issued to and fully paid for
by the holder thereof and no notice or warning from any Governmental Entity with
respect to the suspension, revocation or termination of any Approval has been,
to the Knowledge of the Company, threatened by any Governmental Entity or issued
or given to the Company or any Subsidiary.  No such Approvals will in any way be
affected by, terminate or lapse by reason of the consummation of all or any
portion of the Transaction.  There are no physicians (other than radiologists
and radiation oncologists) owning Capital Stock in any Subsidiary, and no
physicians own stock in the Company, except for physician ownership of publicly
traded stock of the Company acquired on terms equally available to the public
through trading on the Nasdaq Stock Market, and no physician owns 5% or more of
the outstanding shares of any class of securities issued by the Company.

4.14 LITIGATION. 

         Except as set forth on SCHEDULE 4.14 hereto, there is no Proceeding
(by any Governmental Entity or otherwise) of which the Company has received
notice or of which the Company has Knowledge pending against or affecting the
Company, any Subsidiary or the assets, products or business of any of them or,
to the Knowledge of the Company, any basis therefor or threat thereof.  Except
as set forth on SCHEDULE 4.14 hereto, neither the Company nor any Subsidiary is
a party or subject to the provisions of any order, writ, injunction, judgment or
decree of any court or other Governmental Entity.  Except as set forth on
SCHEDULE 4.14 hereto, there is no Proceeding by the Company or any Subsidiary
currently pending or that the Company or any Subsidiary currently intends to
initiate.  There are no Proceedings pending or, to the Knowledge of the Company,
threatened against the Company, any Subsidiary or any of their respective
businesses, assets or products that seek to enjoin, question the validity of or
rescind the Transaction, the GE Purchase Agreement, the Ancillary Agreements or
otherwise prevent the Company from complying with the terms and provisions of
this Agreement, the GE Purchase Agreement, the Ancillary Agreements or any of
such other agreements.  Any and all Liabilities of the Company and its
Subsidiaries under such Proceedings that are probable and subject to reasonable
estimation within the meaning of GAAP are adequately covered (except for
standard deductible amounts) by the existing insurance maintained by the Company
or estimates in accordance with GAAP for the uninsured costs thereof are
reflected in the Financial Statements.  No holder of shares of the Capital Stock
of either American Health Services Corp. or Maxum Health Corp. (constituent
corporations in the mergers contemplated by the Merger Agreement) that either
were outstanding immediately prior to such mergers made a demand for the
appraisal of his shares pursuant to Section 262 of the Delaware General
Corporation Law.


                                          28
<PAGE>

4.15 TRUE AND COMPLETE DISCLOSURE. 

         Taken as a whole, this Agreement, the GE Purchase Agreement, the
Ancillary Agreements, the Exhibits, Schedules, statements and certifications
made or delivered in connection herewith or therewith, do not contain any untrue
statement of a material fact or omit to state a material fact necessary to make
the statements herein or therein not misleading.  All financial projections
reflected in the 1998 budget provided by the Company to the Purchaser were
prepared in good faith on the basis of assumptions believed to be reasonable at
the time such projections were prepared.

4.16 TAXES.

         (a)  All Company Tax Returns have been properly and timely filed and
all such Tax Returns are correct and complete in all material respects.  Each
affiliated group with which any of the Company and its Subsidiaries files a
consolidated or combined Tax Return has filed all such Tax Returns that it was
required to file for each taxable period during which any of the Company and its
Subsidiaries was a member of the group.  All such consolidated and combined Tax
Returns were correct and complete in all material respects.

         (b)  All material Taxes due and payable by the Company and/or its
Subsidiaries (whether or not shown on any Tax Return) have been timely paid in
full.  All material Taxes owed by any affiliated group with which any of the
Company and its Subsidiaries files a consolidated or combined Tax Return
(whether or not shown on any Tax Return) have been paid for each taxable period
during which any of the Company and the Subsidiaries was a member of the group.

         (c)  There is no (nor is there any pending request for an) agreement,
waiver or consent providing for an extension of time with respect to the
assessment or collection of, or statute of limitations regarding, any Taxes or
the filing of any Tax Returns that is currently in effect and no power of
attorney granted by or with respect to the Company or any Subsidiary with
respect to any Tax matter is currently in force.

         (d)  To the Knowledge of the Company, there is no pending audit,
examination or investigation with respect to any Company Tax Returns, nor to the
Knowledge of the Company, is there pending any notice of the initiation thereof;
there is no Proceeding, claim, demand, deficiency or additional assessment
pending or threatened with respect to any Company Tax Returns.

         (e)  To the Knowledge of the Company and its Subsidiaries, the Company
and its Subsidiaries have withheld all Taxes required to have been withheld and
paid by them on their behalf in connection with amounts paid or owing to any
employee, independent contractor, creditor, stockholder or other related or
unrelated third party, and such withheld Taxes have either been duly paid to the
proper Governmental Entity or set aside in accounts for such purpose.

         (f)  None of the Company and its Subsidiaries (i) has been a member of
any affiliated group filing a consolidated federal income Tax Return (other than
a group the common parent of which is the Company) or (ii) has any liability for
the Taxes of any Person (other than 


                                          29
<PAGE>

the Company and its Subsidiaries) under Treas. Reg. Section  1.1502-6 (or any
similar provision of state, local or foreign law), as a transferee or successor,
by contract or otherwise.

         (g)  The charges, accruals and reserves for Taxes (including deferred
Taxes) currently reflected on the Financial Statements in accordance with GAAP
are adequate to cover all unpaid Taxes accruing or payable by the Company and
its Subsidiaries in respect of taxable periods that end on or before the Closing
Date and for any taxable periods that begin before the Closing Date and end
thereafter to the extent such Taxes are attributable to the portion of such
period ending on the Closing Date.  

         (h)  Neither the Company nor any Subsidiary has agreed, requested or
been requested to make, or is required to make, any adjustment to taxable income
for any taxable period after the Closing under Sections 481(a) or 263A of the
Code or any comparable provision of state or foreign tax laws by reasons of a
change in accounting method or otherwise.

         (i)  There are no Encumbrances (other than Permitted Encumbrances) on
any asset or property of the Company or any Subsidiary arising out of, connected
with or related to any Tax imposed on the Company, its Subsidiaries or any of
their businesses or properties.

         (j)  The Company is not a party to, is not bound by and has no
obligation (or potential obligation) under any Tax sharing or allocation
agreement.

         (k)  Neither the Company nor any Subsidiary is a party to any
agreement with an Affiliate relating to a foreign sales corporation (or "FSC")
within the meaning of Section 922 of the Code; or a domestic international sales
corporation (or "DISC") within the meaning of Section 992 of the Code.

         (l)  Other than the elections made in the Tax Returns provided to or
made available to the Purchaser, no agreement, consent or election for foreign,
federal, state or local tax purposes that would affect or be binding on the
Company or any Subsidiary after the Closing has been filed or entered into by
the Company or any Subsidiary.  No consent has been filed with respect to the
Company or any Subsidiary under Section 341(f) of the Code.

         (m)  SCHEDULE 4.16 lists all federal, state, local and foreign Tax
Returns that have been audited, and indicates those Tax Returns that currently
are the subject of audit, other than (i) Tax Returns relating to closed years,
and (ii) Tax Returns that have been audited where such audit did not result in
any change in any tax due from the Company or any Subsidiary to any Governmental
Entity.  Correct and complete copies of all federal Tax Returns, examination
reports and statements of deficiencies assessed against or agreed to by the
Company or any of its Subsidiaries since June 30, 1996 have been delivered or
made available to the Purchaser.  Each of the Company and its Subsidiaries has
disclosed on its federal income Tax Returns all positions taken therein that
could reasonably be expected to give rise to a substantial understatement of
federal income Tax within the meaning of Section 6662 of the Code.


                                          30
<PAGE>

4.17 ENVIRONMENTAL MATTERS.

         (a)  For purposes of this Section 4.17, the term "Company" shall
include (i) the Company, (ii) any Affiliates of the Company other than GE,
(iii) the Business, (iv) all partnerships, joint ventures and other entities or
organizations in which the Company or the Business was at any time or is a
partner, joint venturer, member or participant, and (v) all predecessor or
former corporations, partnerships, joint ventures, organizations, businesses or
other entities, whether in existence as of the date hereof or at any time prior
to the date hereof, the assets or obligations of which have been acquired or
assumed by the Company or the Business or to which the Company or the Business
has succeeded.  

         (b)  The Company and its Subsidiaries:  (i) are, and within the period
of all applicable statutes of limitation have been, in compliance in all
material respects with all applicable Environmental Laws PROVIDED, that the
representation and warranty contained in this clause (i) is limited to the
Knowledge of the Company to the extent (but only to the extent) that it directly
applies to real property that the Company has purchased or has leased from
another Person in a transaction other than the acquisition of such Person
(whether by merger or consolidation, stock purchase or exchange, acquisition of
all or substantially all of the assets of such Person or a similar fundamental
transaction); (ii) hold all Environmental Permits (each of which is in full
force and effect) required for any of their current or intended operations or
for any property owned, leased or otherwise operated by any of them; (iii) are,
and within the period of all applicable statutes of limitation have been, in
compliance with all of their Environmental Permits; and (iv) reasonably believe
that each of their Environmental Permits currently in effect will be renewed
effective prior to the expiration of such Environmental Permit.  

         (c)  Except as set forth on SCHEDULE 4.17, the Company and its
Subsidiaries have not received any notice of alleged, actual or potential
responsibility for, or any inquiry or investigation regarding, any Environmental
Condition.  The Company has not received any notice of any other claim, demand
or action by any individual or entity alleging any actual or threatened injury
or damage to any person, property, natural resource or the environment arising
from or relating to any Release or threatened Release of any Hazardous Materials
at, on, under, in, to or from any Facility or any former Facilities, or in
connection with any operations or activities of the Company or any of its
Subsidiaries.

         (d)  Except as disclosed in SCHEDULE 4.17 or with respect to such
matters as have been fully and finally resolved and as to which there are to the
Knowledge of the Company,  no remaining obligations, neither the Company nor any
of its Subsidiaries has entered into or agreed to or is subject to any consent
decree, order or settlement or other agreement in any judicial, administrative,
arbitral or other similar forum relating to compliance with or Liability under
any Environmental Law.

         (e)  Except as disclosed in SCHEDULE 4.17, Hazardous Materials have
not been transported, disposed of, emitted, discharged or otherwise Released or
threatened to be Released to or at any real property presently or formerly owned
or leased by the Company or any of its Subsidiaries, which Hazardous Materials
are reasonably expected to (i) give rise to Liability of the Company or any
Subsidiary under any applicable Environmental Law, (ii) interfere with the 


                                          31
<PAGE>

Company's or any Subsidiary's continued operations or (iii) materially impair
the fair salable value of any real property owned or leased by the Company or
any Subsidiary.

         (f)  Except as disclosed in SCHEDULE 4.17, neither the Company nor any
of its Subsidiaries has assumed or retained, by contract or, to the Knowledge of
the Company, by operation of law in connection with the sale or transfer of any
assets or business, Liabilities arising from or associated with or otherwise in
connection with such assets or business of any kind, fixed or contingent, known
or not known, under any applicable Environmental Law.  Neither the Company nor
any of its Subsidiaries, to the Knowledge of the Company, is required to make
any capital or other expenditures to comply with any Environmental Law nor to
the Knowledge of the Company is there any reasonable basis on which any
Governmental Entity could take any action that would require any such capital
expenditures.

         (g)  True, complete and correct copies of the written reports, and all
parts thereof, of all environmental audits or assessments which have been
conducted in respect of any Facility or any former Facility within the past five
(5) years, either by the Company or any attorney, environmental consultant or
engineer or other Person engaged by the Company or any of its Subsidiaries for
such purpose, have been delivered to the Purchaser and a list of all such
reports, audits and assessments and any other similar report, audit or
assessment of which the Company has Knowledge is included on SCHEDULE 4.17.

4.18 INSURANCE.

         Each insurance policy held by or for the benefit of the Company or any
of its Subsidiaries is in full force and effect.  Each of the Company and its
Subsidiaries carries, and will continue to carry, insurance with reputable
insurers (except as to self-insurance) with respect to such of their respective
properties and businesses, in such amounts and against such risks as is
customarily maintained by other entities of similar size engaged in similar
businesses (which may include self-insurance in amounts customarily maintained
by companies similarly situated or has been maintained in the past by the
Company and its Subsidiaries).  None of such insurance was obtained through the
use of materially false or misleading information or the failure to provide the
insurer with all material information requested in order to evaluate the
liabilities and risks insured.  Neither the Company nor any of its Subsidiaries
has received any notice of cancellation or non-renewal of any insurance policies
or binders.

4.19 REAL PROPERTY AND LEASEHOLDS.

         (a)  To the Knowledge of the Company, each lease agreement and
mortgage to which the Company or any Subsidiary is a party is in full force and
effect in accordance with its terms.

         (b)  With respect to each parcel of real property owned or leased by
the Company or any of its Subsidiaries:

              (i)     The Company or the relevant Subsidiary, as the case may
     be, has good and valid title to and/or a valid and subsisting leasehold
     interest in each item of real 


                                          32
<PAGE>

     property and leasehold, as appropriate, free and clear of all mortgages,
     liens, Encumbrances (except Permitted Encumbrances), leases, equities,
     claims, charges, easements, rights-of-way, covenants, conditions and
     restrictions, except for liens, if any, for property taxes not due;

              (ii)    No officer, director or employee of the Company, of any
     Subsidiary or of any Affiliate of the Company, nor any Subsidiary or
     Affiliate of the Company, owns directly or indirectly in whole or in
     part, any of such real properties or leaseholds;

              (iii)   Neither the Company nor any Subsidiary is in default with
     respect to any material term or condition of any such mortgage or lease,
     nor has any event occurred which, through the passage of time or the
     giving of notice or both, would constitute a default thereunder by the
     Company or any Subsidiary or would cause the acceleration of any
     obligation of the Company or any Subsidiary or the creation of a lien or
     encumbrance upon any asset of the Company or any Subsidiary; 

              (iv)    All of the buildings, fixtures and other improvements
     described in SCHEDULE 4.19 are in reasonably good operating condition,
     have been maintained in accordance with reasonable industry practices and
     are adequate to conduct the business of the Company and its Subsidiaries,
     as the case may be, as presently conducted; and

              (v)     Neither the Company nor any Subsidiary has received any
     notice or otherwise has Knowledge that the Company or any such
     Subsidiary, as the case may be, is in violation of any applicable
     building code, zoning ordinance or other law or regulation.

4.20 TANGIBLE ASSETS.

         (a)  The Company and its Subsidiaries have good and valid title to or
valid and subsisting leasehold interests in all Fixtures and Equipment having
original cost or fair market value in excess of Five Thousand Dollars ($5,000),
including all such Fixtures and Equipment reflected in the Company's most recent
balance sheet included in the Financial Statements and all such Fixtures and
Equipment purchased or otherwise acquired by the Company or any Subsidiary since
the date of such Balance Sheet.  Except as set forth on SCHEDULE 4.20, none of
such Fixtures and Equipment is subject to any Encumbrance except for Permitted
Encumbrances and Encumbrances which, individually or in the aggregate, are not
substantial in amount and do not materially detract from the value of the
property or assets of the Company and its Subsidiaries taken as a whole or
interfere with the present use of such property or assets (taken as a whole). 
The Company and each Subsidiary has in all material respects performed all the
obligations required to be performed by it with respect to all such Fixtures and
Equipment leased by it through the date hereof, except where the failure to
perform would not have a Material Adverse Effect on the Company and its
Subsidiaries, taken as a whole.  All such leases are valid, binding and
enforceable with respect to the Company and its Subsidiaries in accordance with
their terms and are in full force and effect.  No default has occurred
thereunder on the part of the Company, any Subsidiary or, to the Knowledge of
the Company, any other party which default would be reasonably likely to have a
Material Adverse Effect on the Company.


                                          33
<PAGE>

         (b)  The buildings and Fixtures and Equipment of the Company and its
Subsidiaries are in reasonably good operating condition and repair (except for
ordinary wear and tear), with no material defects, are sufficient for the
operation of the business of the Company and its Subsidiaries as presently
conducted and are in conformity, in all material respects, with all Applicable
Laws relating thereto currently in effect, except where the failure to conform
would not have a Material Adverse Effect on the Company.

4.21 CONTRACTS AND COMMITMENTS.

         (a)  SCHEDULE 4.21 contains a correct and complete list of all
agreements, contracts, Indebtedness, Liabilities and other obligations to which
the Company or any Subsidiary is a party or by which it is bound that are
material to the conduct and operations of its business and properties, which
provide for payments to or by the Company or any Subsidiary in excess of Five
Hundred Thousand Dollars ($500,000) annually, which obligate the Company or any
Subsidiary to share, license or develop any product or technology or which
involve transactions or proposed transactions between the Company and any
Subsidiary, on the one hand, and any officer, director or Affiliate or
Subsidiary, on the other hand (collectively, the "Material Agreements").  

         (b)  The Company and its Subsidiaries have in all material respects
performed, and are now performing in all material respects, the obligations
under, and are not in default (or by the lapse of time and/or the giving of
notice or otherwise be in default) in respect of, any of the Material
Agreements.  Each of the Material Agreements is in full force and effect and is
a valid and enforceable obligation against the Company or a Subsidiary, as
applicable, and, to the Company's Knowledge, the other party or parties thereto,
in accordance with its terms.  

         (c)  "Current Customer" means any Person from whom the Company or any
Subsidiary has recognized revenue since June 1, 1997 or to whom the Company or
any Subsidiary has any obligation to complete work or honor any contractual
warranty or has any obligation or Liabilities.  Since June 1, 1997, no Current
Customer with respect to a Center Operation has canceled or terminated any
Material Agreement or notified the Company or any Subsidiary in writing or
orally of its intent to cancel or terminate its contract, and no Current
Customer with respect to a Mobile Operation has canceled or terminated any
Material Agreement or notified the Company or any Subsidiary in writing or
orally of its intent to cancel or terminate its contract, except any such
cancellations, terminations or notifications from Current Customers with respect
to Mobile Operations that in the aggregate could not have a Material Adverse
Effect (taking into account revenue generated from replacement customers) on the
Company.

4.22 BOOKS AND RECORDS. 

         The Company has made and kept (and given the Purchaser access to)
books and records and accounts, which, in reasonable detail, accurately and
fairly reflect the activities of the Company and its Subsidiaries, taken as a
whole.  The minute books of the Company and each such Subsidiary previously made
available to the Purchaser accurately and adequately reflect all action
previously taken by the stockholders, the Board of Directors and committees of
the Board of Directors and each of its Subsidiaries.


                                          34
<PAGE>

4.23 LABOR MATTERS. 

         (a)  Since June 30, 1992, neither the Company nor any Subsidiary has
or has ever had any employees represented by collective bargaining agreements. 
The Company and its Subsidiaries are in compliance in all material respects with
all material Applicable Laws respecting employment practices, terms and
conditions of employment and wages and hours and are not engaged in any unfair
labor practice.  There is no unfair labor practice charge or complaint against
the Company or any Subsidiary pending before the National Labor Relations Board
or any other governmental agency arising out of the activities of the Company or
any of its Subsidiaries of which the Company has received notice or of which the
Company has Knowledge, and the Company has no Knowledge of any facts or
information which would give rise thereto.  There is no labor strike or labor
disturbance pending or, to the Knowledge of the Company, threatened against the
Company or any of its Subsidiaries.  There is no grievance currently being
asserted and neither the Company nor any Subsidiary has experienced since
June 30, 1994 a work stoppage or other labor difficulty which grievance, work
stoppage or other labor difficulty is reasonably likely to have a Material
Adverse Effect on the Company.  No collective bargaining representation petition
is pending or, to the Knowledge of the Company, threatened against the Company
or any Subsidiary.

         (b)  SCHEDULE 4.23 lists those employees of the Company that prior to
the Closing Date had written employment agreements with the Company in effect.  

4.24 PAYMENTS. 

         Neither the Company nor any of its Subsidiaries has, directly or
indirectly, paid or delivered any fee, commission or other sum of money or item
of property, however characterized, to any finder, agent, government official or
other party, in the United States or any other country, which is in any manner
related to the business or operations of the Company or its Subsidiaries and
which the Company or any of its Subsidiaries knows or has reason to believe to
have been illegal under any federal, state or local laws of the United States
(including, without limitation the U.S. Foreign Corrupt Practices Act) or any
other country having jurisdiction.  Neither the Company nor any of its
Subsidiaries has participated, directly or indirectly, in any boycotts or other
similar practices affecting any of its actual or potential customers

4.25 INTELLECTUAL PROPERTY.

         (a)  The Company and its Subsidiaries either own or have valid
licenses or other rights to use all patents, copyrights, trademarks, service
marks, software, databases, data and other technical information used in their
businesses as presently conducted ("Proprietary Rights"), subject to the
limitations contained in the agreements governing the use of the same.  SCHEDULE
4.25 sets forth all such Proprietary Rights owned by, used by or licensed to the
Company or any Subsidiary.  There are no limitations contained in such
agreements of the type described in the immediately preceding sentence which,
upon consummation of all or any portion of the Transaction, will materially
alter or materially impair any such rights, breach any such material agreement
with any third party vendor or require payments of additional sums thereunder. 
The Company and its Subsidiaries are in compliance in all material respects with
such 


                                          35
<PAGE>

licenses and agreements.  Except as set forth on SCHEDULE 4.25, there are no
pending or, to the Knowledge of the Company, threatened Proceedings challenging
or questioning the validity or effectiveness of any license or agreement
relating to such property or the right of the Company or any Subsidiary to use,
copy, modify or distribute the same.

         (b)  No person has a right, other than those set forth on SCHEDULE
4.25, to receive a royalty or similar payment in respect of any material
Proprietary Rights whether or not pursuant to any contractual arrangements
entered into by the Company or its Subsidiaries.

4.26 SECURITIES OFFERINGS.

         (a)  Except as set forth on SCHEDULE 4.26, since the consummation of
the merger pursuant to the Merger Agreement, the Company has not sold any
securities other than securities registered pursuant to the Securities Act.

         (b)  Neither the Company nor any affiliate (as defined in Rule 501(b)
of Regulation D under the Securities Act ("Regulation D")) of the Company has,
directly or through any agent (provided that no representation is made as to the
Purchaser or any person acting on their behalf), (i) sold, offered for sale,
solicited offers to buy or otherwise negotiated in respect of any security (as
defined in the Securities Act) that is or will be integrated with the offering
and sale of the Securities in a manner that would require the registration of
the Securities under the Securities Act or (ii) engaged in any form of general
solicitation or general advertising (within the meaning of Regulation D) in
connection with the offering of the Securities.

         (c)  Except as provided in Schedule 4.26(c), neither the Company nor
any Subsidiary is a party to any agreement or commitment that obligates the
Company to register under the Securities Act any of its presently outstanding
securities or any of its securities that hereafter may be issued, except as
contemplated hereby and by the Registration Rights Agreement.

4.27 NO OTHER AGREEMENTS TO SELL THE ASSETS OR THE COMPANY. 

         Except as contemplated by this Agreement, none of the Company or any
of its Subsidiaries have any legal obligation, absolute or contingent, to any
other person or firm to sell the Capital Stock, material assets or the business
of the Company or any Subsidiary or to effect any merger, consolidation,
liquidation, dissolution, recapitalization or other reorganization of the
Company or any Subsidiary or to enter into any agreement with respect thereto.

4.28 NO BROKERS. 

         Except for Shattuck Hammond Partners Inc., the aggregate fees of which
are Five Hundred Thousand Dollars ($500,000) in connection with the Transaction,
all of which shall be paid by the Company, neither the Company nor any
Subsidiary has employed, nor is any of them subject to the known claim of, any
broker, finder, consultant or other intermediary in connection with all or any
portion of the Transaction (or the negotiations looking toward the consummation
of all or any portion of the Transaction) who might be entitled to a fee or
commission from the 


                                          36
<PAGE>

Company in connection with all or any portion of the Transaction (or the
negotiations looking toward the consummation of all or any portion of the
Transaction).

4.29 ACCOUNTS AND NOTES RECEIVABLE.

         None of the accounts, notes and other receivables owed to the Company
or any Subsidiary as of the date hereof is pledged to any third party.  The
reserve for doubtful accounts shown on the Company's most recent balance sheet
included in the Financial Statements is in accordance with GAAP.

4.30 INDEBTEDNESS.

         SCHEDULE 4.30 sets forth a true and complete list of all Indebtedness
of the Company or any Subsidiary for borrowed money as of September 30, 1997.

4.31 TRANSACTIONS WITH AFFILIATES.

         Except as set forth in SCHEDULE 4.31 and for regular salary payments
and fringe benefits under an individual's compensation package with the Company
or any Subsidiary, none of the officers, employees, directors or other
Affiliates of the Company or any Subsidiary or members of their families is a
party to any agreement, understanding, Indebtedness or proposed transaction with
the Company or any Subsidiary or is directly interested in any Material
Agreement with the Company or any Subsidiary.  Neither the Company nor any
Subsidiary has guaranteed or assumed any obligations of their respective
officers, directors, employees or other Affiliates or members of any of their
families.  To the Company's Knowledge, none of such Persons has any direct or
indirect ownership interest in any Affiliate or Subsidiary, with any Person with
which the Company or any Subsidiary has a business relationship or with any
Person that competes with the Company or any Subsidiary, other than an interest
of less than five percent (5%) ownership in any publicly traded company that may
compete with the Company or any Subsidiary.  For purposes of this Section 4.31,
the term "Affiliates" shall not include GE.

4.32 NO RESEARCH GRANTS

         Neither the Company nor any of its Subsidiaries since inception has
provided any research, educational or study grants of any kind to any hospital,
physician or health care provider.  

4.33 CERTAIN REGULATORY MATTERS.

         Neither the Company nor any of its Subsidiaries since inception has
received notice that the Company or any Subsidiary has been, or to the Company's
Knowledge has been, the subject of any investigative proceeding before any
federal or state regulatory authority or the agent of any such authority,
including, without limitation, federal and state health authorities.


                                          37
<PAGE>

4.34 CERTAIN ADDITIONAL REGULATORY MATTERS.

         Neither the Company nor any Subsidiary, nor the officers, directors or
managing employees, as that term is defined in 42 C.F.R. Section
1001.1001(a)(1), nor to the Knowledge of the Company or any Subsidiary, the
other employees or agents, of any of the Company or any Subsidiary have engaged
in any activities which are prohibited under criminal law, or are cause for
civil penalties or mandatory or permissive exclusion from Medicare or Medicaid,
or any other State Health Care Program or Federal Health Care Program (as
defined in Section 4.35 below) under Sections 1320a-7, 1320a-7a, 1320a-7b or
1395nn of Title 42 of the United States Code, the federal Civilian Health and
Medical Plan of the Uniformed Services statute ("CHAMPUS"), or the regulations
promulgated pursuant to such statutes or regulations or related state or local
statutes or which are prohibited by any private accrediting organization from
which the Company or any of its Subsidiaries seeks accreditation or by generally
recognized professional standards of care or conduct, including, but not limited
to, the following activities:

         (a)  Knowingly and willfully making or causing to be made a false
statement or representation of a material fact in any application for any
benefit or payment;

         (b)  Knowingly and willfully making or causing to be made any false
statement or representation of a material fact for use in determining rights to
any benefit or payment;

         (c)  Presenting or causing to be presented a claim for reimbursement
under CHAMPUS, Medicare, Medicaid or any other State Health Care Program or
Federal Health Care Program that is (i) for an item or service that the Person
presenting or causing to be presented knows or should know was not provided as
claimed, or (ii) for an item or service that the Person presenting knows or
should know that the claim is false or fraudulent;

         (d)  Knowingly and willfully offering, paying, soliciting or receiving
any remuneration (including any kickback, bribe or rebate), directly or
indirectly, overtly or covertly, in cash or in kind (i) in return for referring,
or to induce the referral of, an individual to a Person for the furnishing or
arranging for the furnishing of any item or service for which payment may be
made in whole or in part by CHAMPUS, Medicare or Medicaid or any other State
Health Care Program or any Federal Health Care Program, or (ii) in return for,
or to induce the purchase, lease or order or the arranging for or recommending
of the purchase, lease or order of, any good, facility, service or item for
which payment may be made in whole or in party by CHAMPUS, Medicare or Medicaid
or any other State Health Care Program or any Federal Health Care Program; or

         (e)  Knowingly and willfully making or causing to be made or inducing
or seeking to induce the making of any false statement or representation (or
omitting to state a material fact required to be stated therein or necessary to
make the statements contained therein not misleading) or a material fact with
respect to (i) the conditions or operations of a facility in order that the
facility may qualify for CHAMPUS, Medicare, Medicaid or any other State Health
Care Program certification or any Federal Health Care Program certification, or
(ii) information required to be provided under Section 1124(A) of the Social
Security Act ("SSA") (42 U.S.C. Section 1320a-3).


                                          38
<PAGE>

4.35 MEDICARE/MEDICAID PARTICIPATION.

         Neither (a) the Company nor any other Person who after the Closing
will have a direct or indirect ownership interest of 5% or more (as those terms
are defined in 42 C.F.R. Section 1001.1001(a)(2)) in the Company or any
Subsidiary, or who will have an ownership or control interest (as defined in SSA
Section 1124(a)(3) or any regulations promulgated thereunder) in the Company or
any Subsidiary, or who will be an officer, director or managing employee (as
defined in 42 C.F.R. Section 1001.1001(a)(1)) of the Company or any Subsidiary,
or, to the Knowledge of the Company and any Subsidiary, any other employee or
agent thereof, nor (b) any Person with any relationship with such entity
(including, without limitation, a parent company of or partner in a Subsidiary)
who after the Closing will have an indirect ownership interest of 5% or more (as
that term is defined in 42 C.F.R. Section 1001.1001(a)(2)) in the Company or any
Subsidiary:  (i) has had a civil monetary penalty assessed against it under
Section 1128A of the SSA or any regulations promulgated thereunder; (ii) has
been excluded from participation under Medicare, Medicaid or a state health care
program as defined in SSA Section 1128(h) or any regulations promulgated
thereunder ("State Health Care Program") or a federal health care program as
defined in SSA Section 1128B(f) ("Federal Health Care Program"); or (iii) has
been convicted (as that term is defined in 42 C.F.R. Section 1001.2) of any of
the following categories of offenses as described in SSA Section 1128(a) and
(b)(1), (2), (3) or any regulations promulgated thereunder:

                      (A)  Criminal offenses relating to the delivery of an
     item or service under Medicare, Medicaid or any other State Health Care
     Program or Federal Health Care Program;

                      (B)  Criminal offenses under federal or state law
     relating to patient neglect or abuse in connection with the delivery of a
     health care item or service;

                      (C)  Criminal offenses under federal or state law
     relating to fraud, theft, embezzlement, breach of fiduciary
     responsibility or other financial misconduct in connection with the
     delivery of a health care item or service or with respect to any act or
     omission in a program operated by or financed in whole or in part by any
     federal, state or local governmental agency;

                      (D)  Federal or state laws relating to the interference
     with or obstruction of any investigation into any criminal offense
     described in (A) through (C) above; or

                      (E)  criminal offenses under federal or state law
     relating to the unlawful manufacture, distribution, prescription or
     dispensing of a controlled substance.

4.36 COMPLIANCE WITH MEDICARE/MEDICAID AND INSURANCE PROGRAMS

         (a)  The Company and its subsidiaries are eligible to receive payments
with respect to operations of their respective business under Title XVIII of the
SSA and under Title XIX of the SSA.  The Company and its Subsidiaries have
timely filed (except where the failure to 


                                          39
<PAGE>

timely file would not reasonably be expected to have a Material Adverse Effect
on the Company) all claims and reports required to be filed with respect to the
operations of their respective businesses in connection with all state Medicaid
and federal Medicare programs, which claims and reports are complete and
correct.  The failure to timely file a medical claim or report resulting only in
a late payment will not for these purposes be deemed adverse to the Company or
its Subsidiaries.  There are no actions, appeals or investigations pending or,
to the best of the Company's and its Subsidiaries' Knowledge, threatened before
any entity, commission, board or agency, including an intermediary or carrier or
the administrator of the Health Care Financing Administration, with respect to
any Medicare or Medicaid claims or reports filed by the Company or its
Subsidiaries with respect to the operations of their respective businesses on or
before the date hereof or program compliance matters, which would reasonably be
expected to have a Material Adverse Effect on the Company.

         (b)  Other than regularly scheduled audits and reviews, no validation
review, peer review or program integrity review related to the operations of the
Company or its Subsidiaries' respective businesses has been conducted by any
entity, commission, board or agency in connection with the Medicare or Medicaid
program, and to the best of the Company's and its Subsidiaries' Knowledge, no
such reviews are scheduled, pending or threatened against or affecting such
businesses.

                                      ARTICLE V
                   REPRESENTATIONS AND WARRANTIES OF THE PURCHASER

         Each Person that is part of the Purchaser hereby represents and
warrants to the Company, with respect to itself only, as follows:

5.1  ORGANIZATION OF THE PURCHASER. 

         Such Person is duly formed and validly existing and in good standing
under the laws of its jurisdiction of formation and has full power and authority
to carry on its business as currently being conducted.

5.2  AUTHORIZATION. 

         Such Person has full power and authority to execute and deliver this
Agreement and the Ancillary Agreements and to consummate the Transaction.  The
execution and delivery by such Person of this Agreement and the Ancillary
Agreements and the consummation by it of the Transaction have been duly
authorized by all necessary action of such Person.  This Agreement and each
Ancillary Agreement has been duly executed and delivered by such Person and
constitutes a valid and legally binding obligation of such Person, enforceable
against such Person in accordance with its terms, except that such
enforceability may be limited by (i) applicable bankruptcy, insolvency,
reorganization, moratorium and similar laws affecting creditors' rights
generally and (ii) general equitable principles (regardless of whether such
enforceability is considered in a proceeding in equity or at law).


                                          40
<PAGE>

5.3  NONCONTRAVENTION. 

         The execution and delivery by such Person of this Agreement and the
Ancillary Agreements and the consummation by it of the Transaction do not and
will not (i) conflict with or result in a violation of any provision of the
operating agreement or any other governing agreement of such Person,
(ii) conflict with or result in a violation of any provision of, constitute
(with or without the giving of notice or the passage of time or both) a default
under or give rise (with or without the giving of notice or the passage of time
or both) to any right of termination, cancellation, or acceleration under any
bond, debenture, note, mortgage, indenture, lease, agreement or other instrument
or obligation to which such Person is a party or by which such Person or any of
its properties may be bound, (iii) result in the creation or imposition of any
Encumbrance upon the properties of such Person, or (iv) violate any Applicable
Law binding upon such Person, except, in the case of clauses (ii), (iii) and
(iv) above, for any such conflicts, violations, defaults, terminations,
cancellations, accelerations or Encumbrances which would not, individually or in
the aggregate, have a material adverse effect on the ability of such Person to
consummate the Transaction.

5.4  CONSENTS AND APPEALS. 

         No consent, approval, order or authorization of or declaration, filing
or registration with any Governmental Entity is required to be obtained or made
by such Person in connection with the execution and delivery by such Person of
this Agreement and the Ancillary Agreements or the consummation of the
Transaction other than (i) any filings required under Section 13 of the Exchange
Act and Rule 13d-1 under the Exchange Act (ii) compliance with applicable
provisions of the HSR Act, as amended and (iii) such consents, approvals, orders
or authorization which, if not made, would not, individually or in the
aggregate, have a material adverse effect on the ability of such Person to
consummate the Transaction.

5.5  PURCHASE FOR INVESTMENT.

         (a)  Such Person and the Carlyle Affiliates have been furnished with
all information that it has requested for the purpose of evaluating the proposed
acquisition of the Securities pursuant hereto, and such Person and the Carlyle
Affiliates have had an opportunity to ask questions of and receive answers from
the Company regarding the Company and its Business, assets, results of
operations, financial condition and prospects and the terms and conditions of
the issuance of the Securities.

         (b)  Such Person is acquiring the Securities solely by and for its own
account, for investment purposes only and not for the purpose of resale or
distribution.  Neither such Person nor any Carlyle Affiliate has any contract,
undertaking, agreement or arrangement with any Person to sell, transfer or
pledge to such Person or anyone else any Securities and such Person has no
present plans or intentions to enter into any such contract, undertaking or
arrangement.

         (c)  Such Person acknowledges and understands that (i) no registration
statement relating to the Securities, the Series B Conversion Shares or the
Warrant Shares has 


                                          41
<PAGE>

been or is to be filed with the Commission under the Securities Act or pursuant
to the securities laws of any state; (ii) the Securities, the Series B
Conversion Shares, the Series D Preferred Stock, the Series D Conversion Shares
and the Warrant Shares cannot be sold or transferred without compliance with the
registration provisions of the Securities Act or compliance with exemptions, if
any, available thereunder and without the delivery to the Company by reputable
counsel of such counsel's opinion, in form and substance reasonably satisfactory
to the Company, to the effect that such sale or transfer is exempt from such
registration provisions; (iii) the certificates representing the respective
Securities will include a legend thereon that refers to the foregoing; and
(iv) the Company has no obligation or intention to register the Securities, the
Series B Conversion Shares, the Series D Preferred Stock, the Series D
Conversion Shares or the Warrant Shares under any federal or state securities
act or law, except to the extent, in each case, that the terms of the
Registration Rights Agreement shall otherwise provide.

         (d)  Such Person and each Carlyle Affiliate (i) is an "accredited
investor" as defined in Rule 501 of Regulation D under the Securities Act;
(ii) has such knowledge and experience in financial and business matters in
general that it has the capacity to evaluate the merits and risks of an
investment in the Securities and to protect its own interest in connection with
an investment in the Securities; (iii) has such a financial condition that it
has no need for liquidity with respect to its investment in the Securities to
satisfy any existing or contemplated undertaking, obligation or Indebtedness;
and (iv) is able to bear the economic risk of its investment in the Securities
for an indefinite period of time.

5.6  NO BROKERS. 

         Such Person has not employed, and is not subject to the known claim
of, any broker, finder, consultant or other intermediary in connection with all
or any portion of the Transaction (or the negotiations looking toward the
consummation of all or any portion of the Transaction) who might be entitled to
a fee or commission in connection with all or any portion of the Transaction (or
the negotiations looking toward the consummation of all or any portion of the
Transaction).

5.7  NO AGREEMENTS.

         Such Person has not entered into any agreement or arrangement with
respect to the disposition or voting of or exercise of any other rights with
respect to any Capital Stock of the Company with any Person who is not an
Affiliate of such Person (which shall in no event include GE).

                                      ARTICLE VI
                                      COVENANTS

6.1  BEST EFFORTS.

         The Company shall comply with the GE Purchase Agreement and the Credit
Facility through and including the Second Closing.


                                          42
<PAGE>

6.2  RESTRICTIVE AGREEMENTS PROHIBITED.

         Through and including the Second Closing, the Company shall not become
a party to any agreement which by its terms violates the terms of the GE
Purchase Agreement, the terms of the Series B Preferred Stock as set forth in
the Series B Certificate of Designation, the terms of the Series C Preferred
Stock as set forth in the Series C Certificate of Designation, the terms of the
Series D Preferred Stock as set forth in the Series D Certificate of
Designation, or the terms of the GE Warrants.  From and after the Second
Closing, the Company shall not become a party to any agreement which by its
terms violates the terms of the Series B Preferred Stock as set forth in the
Series B Certificate of Designation or the terms of the Series D Preferred Stock
as set forth in the Series D Certificate of Designation .

6.3  CONTINUING OPERATIONS. 

         From and after the Closing Date, the Company shall, and shall use its
best efforts to cause each Subsidiary to, use all commercially reasonable
efforts to operate its business in a prudent fashion and in such a fashion as is
not likely to result in a Material Adverse Effect on the Company; PROVIDED,
HOWEVER, that the Company shall not be liable to the Purchaser for violation of
this Section 6.3 in connection with any action or operation of the Company that
those members of the Board of Directors who were elected by the Purchaser (as
provided in Section 6.13 of this Agreement) voted to approve, adopt or ratify
(if such action or operation was voted upon by the Board of Directors), unless
the information provided to the Board of Directors in connection with its vote
upon such action or operation failed to contain all information that a
reasonable person would deem material in considering such action or operation.  

6.4  FINANCIAL STATEMENTS AND INFORMATION.

         (a)  For so long as the Purchaser and any Carlyle Affiliates hold, in
the aggregate, 25% or more of the shares of Series B Preferred Stock issued to
the Purchaser at the Closing, the Company shall furnish to the Purchaser:

              (i)     MONTHLY REPORTS.  Within thirty (30) days following the
     end of each calendar month, a management report for the preceding
     calendar month summarizing the Company's operating and financial
     performance during such preceding calendar month and including, without
     limitation, an unaudited income statement, an unaudited balance sheet and
     an unaudited statement of cash flows for such preceding calendar month
     and a narrative description of any event, condition or change in
     condition that had, or is likely to have, a Material Adverse Effect on
     the Company (but such reports need only be furnished if the Purchaser
     (and any Carlyle Affiliate who is to receive such reports) shall have
     executed and delivered to the Company an appropriate confidentiality
     agreement reasonably satisfactory to the Company.

              (ii)    QUARTERLY FINANCIAL STATEMENTS.  As soon as available and
     in any event within sixty (60) days after the end of each of the first
     three (3) fiscal quarterly periods of each Fiscal Year, the Company's
     quarterly report on Form 10-Q as filed with the Commission.


                                          43
<PAGE>

              (iii)   ANNUAL FINANCIAL STATEMENTS.  As soon as available and in
     any event within one hundred twenty (120) days after the end of each
     Fiscal Year, the Company's Annual Report on Form 10-K and related Annual
     Report to Shareholders as filed with the Commission.

              (iv)    SEC REPORTS; MAILINGS TO STOCKHOLDERS.  Promptly after
     sending or making available or filing of the same, copies of all
     registration statements, proxy statements, financial statements and
     reports on Forms 10-K, 10-Q and 8-K (or any comparable successor form),
     if any, which the Company or any of its Subsidiaries shall file with the
     Commission or any national securities exchange.  In addition, (A) at the
     same time that the Company makes a mailing to its stockholders generally
     and (B) promptly after the Company issues a press release, the Company
     shall provide a copy of the same to the Purchaser.

              (v)     NOTICE OF DEFAULT OR CLAIMED DEFAULT.  Promptly upon (and
     in any event within five (5) business days following) any officer of the
     Company obtaining Knowledge (A) of any condition or event which
     constitutes an event of default or default (including, without
     limitation, by way of cross-default) under any Indebtedness having a
     principal amount of at least $5 million, (B) that the holder of any
     Indebtedness has given any written notice or taken any other action with
     respect to a claimed condition or event which constitutes such an event
     of default or default or (C) that any Person has given any written notice
     to the Company or any of its Subsidiaries or taken any other action with
     respect to a claimed default under an agreement (other than Indebtedness
     included in clause (A) of this Section 6.4(a)(v)) or other obligation
     having total consideration to the parties of at least $1 million, an
     officer's certificate describing the same and the period of existence
     thereof and what action the Company has taken, is taking and proposes to
     take with respect thereto.

              (vi)    BANKRUPTCY.  Promptly upon receiving notice of any
     Person's seeking to obtain or threatening to seek to obtain a decree or
     order for relief with respect to the Company or any of its Subsidiaries
     in an involuntary case under any applicable bankruptcy, insolvency or
     other similar law now or hereafter in effect, a written notice thereof
     specifying what action the Company or such Subsidiary is taking or
     proposes to take with respect thereto.

              (vii)   ADDITIONAL INFORMATION.  With reasonable promptness, such
     other information, including financial statements and computations,
     relating to the performance of the provisions of this Agreement or the
     affairs of the Company or any of its Subsidiaries as the Purchaser may
     from time to time reasonably request.

         (b)  The Company will furnish to the Purchaser, at the time it
furnishes each set of financial statements pursuant to Section 6.4(a)(ii) or
(iii) above, an officer's certificate to the effect that no event of default
under any Indebtedness has occurred and is continuing (or, if any such event of
default has occurred and is continuing, describing the same in reasonable
detail, the period of existence thereof and the action that the Company has
taken and proposes to take with respect thereto).


                                          44
<PAGE>

         (c)  The Company will keep at its principal executive offices the
books, accounts and records of the Company and cause the same to be available
for inspection at said offices during normal business hours by the Purchaser or
by any prospective purchaser of any of the Securities from either the Purchaser
or any Carlyle Affiliate (other than such a purchaser proposing to purchase
pursuant to a valid registration statement or pursuant to Rule 144 promulgated
under the Securities Act).  The Purchaser may, at its option and its own
expense, conduct internal audits of the books, records and accounts of the
Company.  Audits may be on either a continuous or periodic basis or both and may
be conducted by employees of the Purchaser or by independent auditors or other
consultants retained by the Purchaser.  The Company shall make available to the
Purchaser such information and financial statements in addition to the foregoing
as shall be required by the Purchaser in connection with the preparation of
registration statements, current and periodic reports, proxy statements, Tax
Returns and other documents required to be filed under Applicable Law and shall
cooperate in the preparation of any such documents.  

6.5  PRESS RELEASES.

         Except as may be required by Applicable Law or by the rules of any
national securities exchange, neither the Purchaser nor the Company shall issue
any press release with respect to this Agreement or the Transaction without the
prior consent of the other party hereto (which consent shall not be unreasonably
withheld under the circumstances).  Any such press release required by
Applicable Law or by the rules of any national securities exchange shall only be
made after reasonable notice to the other party as to the form and content of
such press release.

6.6  NOTIFICATION OF CERTAIN MATTERS.

         The Company shall give prompt notice to the Purchaser, and the
Purchaser shall give prompt notice to the Company, of (i) the occurrence or
failure to occur of any event which occurrence or failure causes any
representation or warranty contained in this Agreement to be untrue or
inaccurate in any material respect at any time from and including the date
hereof through the time at which such representation or warranty ceases to
survive pursuant to Section 8.1 hereof, and (ii) any material failure of the
Company or the Purchaser, as the case may be, to comply with or satisfy any
covenant, condition or agreement to be complied with or satisfied by it
hereunder, and each party shall use all reasonable efforts to remedy such
failure.  In addition, the Company shall give prompt notice to the Purchaser of
any developments that could reasonably be expected to have a Material Adverse
Effect on the Company.

6.7  LIABILITY INSURANCE.

         For so long as the Purchaser and any Carlyle Affiliates hold, in the
aggregate, 25% or more of the shares of Series B Preferred Stock issued to the
Purchaser at Closing, the Company shall ensure that each person serving on the
Board of Directors on and after the Closing Date shall receive the same
liability insurance coverage as a member of the Board of Directors receives as
of the date hereof (including coverage for liabilities arising before the date
of taking office to the extent arising from such person's status as a
prospective member of the Board of 


                                          45
<PAGE>

Directors) and that such policies shall be in full force and effect in
accordance with their terms as of the Closing Date.  

6.8  CONVERSION STOCK.

         The Company shall at all times reserve and keep available out of its
authorized but unissued shares of Common Stock and preferred stock, par value
$.001 per share, solely for the purpose of effecting the conversion of shares of
Series B Preferred Stock and Series C Preferred Stock and the issuance of Common
Stock in respect of the Warrants and the GE Warrants, the full number of whole
shares of Common Stock and Series D Preferred Stock then deliverable upon (a)
the conversion of all shares of Series B Preferred Stock and Series C Preferred
Stock then outstanding, (b) the issuance of Common Stock in respect of the
Warrants and the GE Warrants, and (c) if any Series D Preferred Stock is then
outstanding, the full number of whole shares of Common Stock then deliverable
upon the conversion of all shares of Series D Preferred Stock then outstanding. 
The Company shall take at all times such corporate action as shall be necessary
in order that the Company may validly and legally issue fully paid and
non-assessable shares of Common Stock or Series D Preferred Stock (as the case
may be) upon the conversion of shares of Series B Preferred Stock, Series C
Preferred Stock, and Series D Preferred Stock and the exercise of the then
outstanding Warrants and GE Warrants.  If at any time the number of authorized
but unissued shares of Common Stock or Series D Preferred Stock shall not be
sufficient to effect the conversion of all then outstanding shares of the Series
B Preferred Stock, Series C Preferred Stock, and Series D Preferred Stock and
the exercise of all the then outstanding Warrants and GE Warrants, in addition
to such other remedies as shall be available to the holders of the Series B
Preferred Stock, Series C Preferred Stock, and Series D Preferred Stock, the
Company shall forthwith take such corporate action as may be necessary to
increase its authorized but unissued shares of Common Stock or Series D
Preferred Stock to such numbers of shares as shall be sufficient for such
purpose, including but not limited to promtly calling and holding a meeting of
the Company's stockholders, at which the Company's stockholders shall vote on a
proposed amendment to the Certificate of Incorporation that would so increase
the number of authorized shares of Common Stock or preferred stock, par value
$.001 per share, as appropriate, a favorable vote for which amendment shall have
been recommended to the Company's stockholders by the Board of Directors,
pursuant to a duly and validly adopted resolution of the Board of Directors
setting forth the amendment proposed and declaring its advisability, all in
accordance with Section 242 of the Delaware General Corporation Law; and, in
case of an increase in the number of authorized shares of such preferred stock,
the Board of Directors shall promptly cause to become effective a certificate of
increase pursuant to Section 151 of the Delaware General Corporation Law.

6.9  CERTAIN REGULATORY MATTERS.

         (a)  The operations of the Company and its Subsidiaries will be
conducted in compliance with all material Applicable Laws (material Applicable
Laws includes, without limitation, all Applicable Laws relating to health care,
the health care industry and the provision of health care services, third party
reimbursement (including Medicare and Medicaid), public health and safety and
wrongful death and medical malpractice).  In addition to, and without limiting
the generality of the foregoing, the Company shall adopt and implement a
compliance plan adequate 


                                          46
<PAGE>

to assure such compliance.  The compliance plan shall include all material
elements of an effective program to prevent and detect violations of law as
defined in Commentary 3(k) to Section 8A1.2 of the Federal Sentencing
Guidelines.

         (b)  Without limiting the generality of the foregoing, the Company and
all Affiliates shall comply in all material respects with all lawful directives,
orders, instructions, bulletins and other announcements received from third
party payors and their agents (including, without limitation, Medicare carriers
and fiscal intermediaries) regarding participation in third party payment
programs, including, without limitation, preparation and submission of claims
for reimbursement.  Nothing in this Section 6.9 shall be construed as or is
intended to create any third party beneficiaries. 

6.10 EMPLOYMENT ARRANGEMENTS.

         (a)  The Company will keep in effect following the Closing the
employment agreements with the employees set forth in SCHEDULE 4.23, on the same
terms and conditions contained in such employment agreements prior to the
Closing Date; provided, however, that such employment agreements shall be
modified so that none of (i) the Transaction, (ii) any conversion of Series B
Preferred Stock or Series C Preferred Stock acquired hereunder or under the GE
Purchase Agreement into shares of Series D Preferred Stock or Common Stock ,
(iii) any conversion of shares of Series D Preferred Stock into Common Stock, or
(iv) any change in the membership, size or composition of the Board of Directors
incident to the transaction or such conversions, shall trigger or constitute a
change of control or otherwise give any party to such employment agreements any
right to receive any payment (or any acceleration thereof) or protections
whatsoever. 

         (b)  Following the Closing, the Company and the Purchaser will review
the terms and conditions of the bonus plan currently in effect at the Company to
determine whether any changes should be made to such bonus plan.  

6.11 TRANSACTIONS WITH AFFILIATES.

         For so long as the Purchaser and any Carlyle Affiliates hold, in the
aggregate, 25% or more of the shares of Series B Preferred Stock issued to the
Purchaser at Closing, the Company covenants and agrees that it will not, and
will not permit any of its Subsidiaries to, directly or indirectly, engage in
any transaction with any Affiliate of the Company, including, without
limitation, the purchase, sale or exchange of assets or the rendering of any
service, except:  (a) transactions with Affiliates of the Company that involve
consideration or payments in the aggregate of less than $5,000; (b) transactions
with Affiliates of the Company that are approved by the Board of Directors; and
(c) transactions with Affiliates of the Company in the ordinary course of
business and pursuant to the reasonable requirements of the Company's or such
Subsidiary's business and upon fair and reasonable terms that are no less
favorable to the Company or such Subsidiary, as the case may be, than those
which might be obtained in an arm's-length transaction at the time from a Person
which is not such an Affiliate.  


                                          47
<PAGE>

6.12 STOCKHOLDER APPROVAL OF CERTAIN ACTIONS.

         Without limitation of the rights, restrictions and protections
contained in the Series B Certificate of Designation or otherwise available to
holders of shares of the Series B Preferred Stock, for so long as at least
thirty-three percent (33%) of the number of shares of the Series B Preferred
Stock originally issued to the Purchaser is outstanding, the Company shall not
take, and shall cause its Subsidiaries not to take, any of the following actions
without the affirmative vote of holders of at least sixty-seven percent (67%) of
the shares of the Series B Preferred Stock then outstanding: 

         (a)  Alter, change or amend (by merger or otherwise) any of the
rights, preferences and privileges of the Series B Preferred Stock, the Series C
Preferred Stock or any other class of Capital Stock or the terms or provisions
of any Option or Convertible Security;

         (b)  Effect or enter into any transaction or event that results or
could reasonably be expected to result, directly or indirectly, in a Special
Corporate Event with respect to the Company or any Subsidiary;

         (c)  The occurrence of any Liquidating Event with respect to the
Company or any Subsidiary;

         (d)  Amend, restate, alter, modify or repeal (by merger or otherwise)
the Certificate of Incorporation or the Amended Bylaws of the Company,
including, without limitation, amending, restating, modifying or repealing (by
merger or otherwise) any certificate of designation or preferences (as in effect
from time to time) relating to the Series A Preferred Stock, the Series B
Preferred Stock, the Series C Preferred Stock or the Series D Preferred Stock,
including, without limitation, the filing by the Company of a certificate with
the Secretary of State of the State of Delaware, pursuant to Section 151(g) of
the Delaware General Corporation Law, setting forth a resolution or resolutions
adopted by the Board of Directors of the Company that none of the authorized
shares of Series D Preferred Stock are outstanding and that none will be issued
subject to the Series D Certificate of Designation, (provided however, that upon
any Type A Conversion pursuant to Section 5 of the Series B Certificate of
Designation, the Company shall immediately file a certificate with the Secretary
of State of the State of Delaware, pursuant to Section 151(g) of the Delaware
General Corporation Law, setting forth a resolution or resolutions adopted by
the Board of Directors of the Company that none of the authorized shares of
Series D Preferred Stock are outstanding and that none will be issued subject to
the Series D Certificate of Designation.)

         (e)  Change the number of directors of the Company to a number less
than eight (8) or more than nine (9) or the manner in which the directors are
selected, except as provided in the Certificate of Incorporation, Amended
Bylaws, Series B Certificate of Designation, Series C Certificate of Designation
and Series D Certificate of Designation;

         (f)  Incur any Indebtedness, in the aggregate with respect to the
Company and its Subsidiaries, in excess of $15 million in any Fiscal Year;
PROVIDED, HOWEVER, that this provision 



                                          48
<PAGE>

shall not apply to draw-downs under any credit facility as to which a credit
agreement had been executed and delivered on or prior to the date hereof;

         (g)  Become a party to Operating Leases during any Fiscal Year with
respect to which the present value of all payments due during the term of such
Operating Leases in the aggregate (determined using a discount rate of 10%)
exceed $15 million; 

         (h)  Create, authorize or issue any shares of Series B Preferred Stock
or any class or series of Senior Securities, Parity Securities, Supervoting
Securities or shares of any such class or series;

         (i)  Reclassify any authorized stock of the Company into Series B
Preferred Stock or any class or series of Senior Securities, Parity Securities,
Supervoting Securities or shares of such class or series;

         (j)  Increase or decrease the authorized number of shares of Series B
Preferred Stock, Series D Preferred Stock or any class or series of Senior
Securities, Parity Securities, Supervoting Securities or shares of any such
class or series;

         (k)  Issue any equity security below either the then current Market
Price (without deduction for any underwriters' discount) or the then applicable
Conversion Price of the Series B Preferred Stock (as defined in the Series B
Certificate of Designation), other than for (i) management stock options
currently authorized and available for grant for not more than Three Hundred
Thousand (300,000) shares of Common Stock in the aggregate, in which Senior
Management of the Company shall not participate, (ii) management stock options
exercisable at not less than the then-applicable Conversion Price per share of
Common Stock issued after October 14, 1997, exercisable for not more than Five
Hundred Thousand (500,000) shares of Common Stock in the aggregate, in which
only Senior Management of the Company shall participate, and (iii) the Common
Stock underlying such management stock options and other stock options
outstanding as of October 14, 1997; 

         (l)  Declare or pay any dividend or make any distribution (including,
without limitation, by way of redemption, purchase or other acquisition) with
respect to shares of Capital Stock or any securities convertible into or
exercisable, redeemable or exchangeable for any share of Capital Stock of the
Company or any Subsidiary (including, without limitation, any Option or
Convertible Security) directly or indirectly, whether in cash, obligations or
shares of the Company or other property;

         (m)  Acquire, in one or a series of related transactions, any equity
ownership interest or interests of any Person, where the aggregate consideration
payable in connection with such acquisition (including, without limitation, cash
consideration, the fair market value of any securities and the net present value
of any deferred consideration) is at least $15 million;

         (n)  Acquire, in one or a series of related transactions, any asset or
assets of any Person, where the aggregate consideration payable in connection
with such transaction (including, without limitation, cash consideration, the
fair market value of any securities and the net present 


                                          49
<PAGE>

value of any deferred consideration) is equal to or greater that $15 million;
PROVIDED, HOWEVER, that this provision shall not apply to Capital Expenditures
made by the Company in the Ordinary Course of Business;

         (o)  Merge or consolidate with any Person, or permit any other Person
to merge into it where:  (i) the stockholders of the Company immediately prior
to the consummation of such merger or consolidation shall, immediately after the
consummation of such merger or consolidation, hold securities possessing more
than 50% of both the total voting power of and the beneficial ownership
interests in the surviving entity of such merger or consolidation and (ii) the
equity holders of such other Person immediately prior to the consummation of
such transaction shall receive (directly or indirectly) aggregate consideration
payable in connection with such transaction (including without limitation cash
consideration, the fair market value of any securities and the net present value
of any deferred consideration) equal to or greater than $15 million; 

         (p)  Cause or permit any Subsidiary to merge or consolidate with any
other Person (other than the Company or a wholly-owned Subsidiary), or cause or
permit any other Person to merge into it, where:  (i) the stockholders of such
Subsidiary immediately prior to the consummation of such merger or consolidation
shall, immediately after the consummation of such merger or consolidation, hold
securities possessing more than 50% of both the total voting power of and the
beneficial ownership interests in the surviving entity of such merger or
consolidation and (ii) the equity holders of the subject Person immediately
prior to the consummation of such transaction shall receive (directly or
indirectly) aggregate consideration payable in connection with such transaction
(including without limitation cash consideration, the fair market value of any
securities and the net present value of any deferred consideration) equal to or
greater than $15 million;

         (q)  Substantially and materially engage in, either through
acquisition or internal development, any business other than the Business;

         (r)  Make or permit any of its Subsidiaries to make Capital
Expenditures in any Fiscal Year in excess, in the aggregate, of two percent (2%)
above the approved Capital Budget Plan for such Fiscal Year unless such Capital
Expenditure is approved by the Executive Committee of the Board of Directors or
a Supermajority Vote of the Board of Directors; 

         (s)  (i) sell, transfer, convey, lease or dispose of, outside the
Ordinary Course of Business, any assets or properties of the Company or any
Subsidiary, whether now or hereafter acquired, in any transaction or
transactions, if (X) the aggregate consideration payable in connection with any
single such transaction (including, without limitation, cash consideration, the
fair market value of any securities and the net present value of any deferred
consideration), is greater than $5 million or (Y) the aggregate consideration
payable in connection with all such transactions (including, without limitation,
cash consideration, the fair market value of any securities and the net present
value of any deferred consideration), consummated after the Initial Issue Date,
taken as a whole, is or would become as a result of such transaction greater
than $20 million; (ii) undergo or cause or permit any Subsidiary to undergo a
reorganization or recapitalization; (iii) merge or consolidate with any Person,
or permit any other Person to merge into it, where the stockholders of the
Company immediately prior to the consummation of such 


                                          50
<PAGE>

merger or consolidation shall, immediately after the consummation of such merger
or consolidation, hold securities possessing 50% or less of either the total
voting power of or the beneficial ownership interests in the surviving entity of
such merger or consolidation; (iv) cause or permit any Subsidiary to merge or
consolidate with any other Person (other than the Company or a wholly-owned
Subsidiary of the Company), or cause or permit any other Person to merge into
such Subsidiary, where the stockholders of such Subsidiary immediately prior to
the consummation of such merger or consolidation shall, immediately after the
consummation of such merger or consolidation, hold 50% or less of either the
total voting power of or the beneficial ownership interests in the surviving
entity of such merger or consolidation, if (X) the value of the assets of such
Subsidiary is greater than $5 million or (Y) the aggregate value of the assets
of all such Subsidiaries with respect to all such mergers or consolidations
consummated after the Initial Issue Date, taken as a whole, and including such
transaction, is greater than $20 million;

         (t)  Permit any Subsidiary to issue or sell any share of Capital
Stock, Option or Convertible Security; PROVIDED, HOWEVER, that the Company may
form a new Subsidiary not all of the equity securities of which need be owned
directly or indirectly by the Company (a "Partial Subsidiary"), but only if (i)
at the time of creation of such Partial Subsidiary, such Partial Subsidiary is
designated as such in a written notice to the Purchaser, and, (ii) cumulatively
through time no more than $5,000 of assets (in the aggregate ) are transferred
to such Partial Subsidiary by the Company or any other Subsidiary, and (iii) no
liabilities of such Partial Subsidiary are ever assumed or guaranteed by the
Company or any other Subsidiary;

         (u)  Amend, restate, alter, modify or repeal (by merger or otherwise)
or permit any Subsidiary to amend, restate, modify or repeal (by merger or
otherwise) the certificate of incorporation or bylaws of any Subsidiary in any
material respect; or

         (v)  Issue any shares of Series D Preferred Stock, otherwise than
pursuant to a Type B Conversion.

6.13 BOARD OF DIRECTORS.

         (a)  The Board of Directors at all times following the Closing and
before a Type B Event Date shall be comprised of between eight (8) and nine (9)
members with one vacancy until the ninth member, an Independent nominated by the
Purchaser and GE has been approved by the Board of Directors (the "Joint
Director") to fill such vacancy.  After the occurrence of a Type B Event Date,
the Board of Directors shall be comprised of a number of members that is
consistent with the Series B Certificate of Designation, the Series C
Certificate of Designation, the Series D Certificate of Designation and the
Amended Bylaws.  As long as the Purchaser and all Carlyle Affiliates own at
least fifty percent (50%) of the shares of Series B Preferred Stock originally
purchased by the Purchaser, the holders of the Series B Preferred Stock, by a
vote as provided in the Series B Certificate of Designation, shall have the
right to elect two (2) directors.  As long as the Purchaser and all Carlyle
Affiliates own at least twenty-five percent (25%) but less than fifty percent
(50%) of the Series B Preferred Stock originally purchased by the Purchaser, the
holders of the Series B Preferred Stock, by a vote as provided in the Series B
Certificate of Designation, shall have the right to elect one (1) director. 
Until the occurrence of a Type B Event Date, the holders of the Common Stock
shall have the right to elect 


                                          51
<PAGE>

between five (5) and six (6) directors (one (1) of whom shall be the Joint
Director) plus, if any of the percentage ownership conditions contained in the
two immediately preceding sentences fail to be satisfied otherwise than pursuant
to a Type B Conversion, such director or directors as would, absent such
failure, be elected by holders of the Series B Preferred Stock or the Series C
Preferred Stock, as appropriate.

         (b)  Immediately following the Closing, the Board of Directors shall
appoint, and shall thereafter until a Type B Event Date, unless approved by a
majority of the entire board of directors and a majority of the directors
elected by the holders of the Series B Preferred Stock and the Series C
Preferred Stock, maintain as provided in the Amended Bylaws the following
committees of the Board of Directors with the respective duties, membership and
voting requirements stated below, PROVIDED, that if the holders of the Series B
Preferred Stock shall, otherwise than as a result of the conversion of their
shares of Series B Preferred Stock in a Type B Conversion, cease to have the
right to nominate and elect any Preferred Stock Director at all, then such
holders shall no longer have the right to select any member of any of the
following committees and the member or members of such committees selected by
such holders shall automatically cease to be a member or members of such
committees: 

              (i)     Compensation Committee, which shall consist of three (3)
     directors, at least one (1) of whom shall be selected jointly by the
     directors elected by the Series B Preferred Stock and the director
     elected by the Series C Preferred Stock.  An affirmative vote of at least
     two (2) members of the Compensation Committee shall be required for
     approval of matters considered by the Compensation Committee.  The
     Compensation Committee shall ensure that the representative on the
     Compensation Committee selected by the directors elected by the Series B
     Preferred Stock and the director elected by the Series C Preferred Stock
     shall receive adequate notice of and an opportunity to participate in any
     meetings of the Compensation Committee;

              (ii)    Audit Committee, which shall consist of three (3)
     directors, including as many Independent directors as are available, not
     to exceed three (3).  An affirmative vote of at least two (2) members of
     the Audit Committee shall be required for approval of matters considered
     by the Audit Committee;

              (iii)   Executive Committee, which shall consist of four (4)
     directors, one (1) of whom shall be selected by the directors elected by
     the Series B Preferred Stock, one (1) of whom shall be selected by the
     director elected by the Series C Preferred Stock and two (2) of whom
     shall be selected by the Board of Directors.  The members selected by the
     directors elected by the Series B Preferred Stock and the director
     elected by the Series C Preferred Stock may be removed only by the
     director or directors, respectively, who selected such members.  The
     Executive Committee shall, in addition to the customary duties of an
     executive committee, have the right to approve any financing activity,
     including but not limited to the Capital Budget Plan.  An affirmative
     vote of at least three (3) members of the Executive Committee shall be
     required for approval of any matters considered by the Executive
     Committee.  Each financing activity not approved by the Executive
     Committee may be referred to the Board of Directors for approval, which
     approval shall require a Supermajority Vote; and


                                          52
<PAGE>

              (iv)    Acquisitions Committee, which shall consist of four (4)
     directors, one (1) of whom shall be selected by the directors elected by
     the Series B Preferred Stock, one (1) of whom shall be selected by the
     director elected by the Series C Preferred Stock, and two (2) of whom
     shall be selected by the Board of Directors.  The Acquisitions Committee
     shall have the right to approve any transaction of the types described in
     Sections 6.12(m), (n), (o) and (p) with respect to which transaction the
     aggregate consideration payable in connection with such transaction
     (including, without limitation, cash consideration, the fair market value
     of any securities and the net present value of any deferred
     consideration) is less than $15 million.  A unanimous vote of the
     Acquisitions Committee shall be required for approval of any matters
     considered by the Acquisitions Committee.  Except as described in the
     next sentence, each matter considered but not unanimously approved by the
     Acquisitions Committee may be referred to the Board of Directors for
     approval, which approval shall require a majority vote of the Board of
     Directors.  The unanimous approval of the Acquisitions Committee or the
     unanimous approval of the Board of Directors shall be required before the
     Company or any of its Subsidiaries engage in a transaction of the types
     described in Sections 6.12(m), (n) (which, only for purposes of this
     clause, shall also apply to Capital Expenditures made by the Company in
     the ordinary course of business), (o) and (p), in which transaction: (A)
     the aggregate consideration payable in connection with such transaction
     (including, without limitation, cash consideration, the fair market value
     of any securities and the net present value of any deferred
     consideration) is less than $15 million; and (B) the Company is to issue
     its common stock at an implicit or explicit price of less than $8.375 per
     share.  Such implicit price shall be determined in an appraisal approved
     unanimously by the Acquisitions Committee or unanimously by the Board of
     Directrs, such appraisal to be performed by an independent appraiser
     selected unanimously by the Acquisitions Committee or unanimously by the
     Board of Directors.

         (c)  Regular meetings of the Board of Directors of the Company shall
be held at least once a calendar quarter at the offices of the Company or at
such other times and places as may be fixed by the Board of Directors upon
notice to the members of the Board of Directors.

         (d)  After the Closing, the following matters, among others specified
in the Amended Bylaws, shall be deemed approved by the Board of Directors only
upon a Supermajority Vote in respect of any such matter:

              (i)     Approving the annual Capital Budget Plan; and 

              (ii)    Approving the Company entering into any financing
     activity not approved by the Executive Committee.

         (e)  Upon any Type A Conversion pursuant to Section 5 of the Series B
Certificate of Designation and Section 5 of the Series C Certificate of
Designation, of all of the outstanding shares of Series B Preferred Stock and
Series C Preferred Stock, the Company shall immediately file a certificate with
the Secretary of State of the State of Delaware, pursuant to Section 151(g) of
the Delaware General Corporation Law, setting forth a resolution or resolutions
adopted by the Board of Directors of the Company that none of the authorized
shares 


                                          53
<PAGE>

of Series D Preferred Stock are outstanding and that none will be issued subject
to the Series D Certificate of Designation.

6.14 RESTRICTIONS ON TRANSFER OF CAPITAL STOCK.

         (a)  The Purchaser shall not transfer, sell, assign, or pledge to any
Person other than a Carlyle Affiliate, or dispose of, any interest in any shares
of the Series B Preferred Stock without the prior approval of the Board of
Directors, in its sole discretion.  The Purchaser shall not transfer, sell or
assign to a Carlyle Affiliate, any interest in any shares of the Series B
Preferred Stock if such Carlyle Affiliate is engaged in the Business.

         (b)  After the Closing Date and before the earlier to occur of April
14, 1999 and a Type B Event Date, the Purchaser shall not transfer, sell or
assign to any Person any of the Series D Preferred Stock, Series B Conversion
Shares or Series D Conversion Shares without the prior approval of an ordinary
majority of the Board of Directors in its sole discretion, other than in the
following circumstances:

              (i)     A transfer to a Carlyle Affiliate (provided that prior to
     any such transfer such Carlyle Affiliate shall have delivered to the
     Company its written agreement to be bound by the terms of this Section
     6.14);

              (ii)    A transfer permitted under Rule 144 under the Securities
     Act;

              (iii)   A transfer pursuant to a registered offering under
     registration rights from the Company as provided in the Registration
     Rights Agreement; or

              (iv)    A transfer pursuant to a transaction available to all
     stockholders of the Company on the same terms as to the Purchaser, which
     has been approved by a majority of the Board of Directors;

         (c)  If a Type B Event Date occurs prior to April 14, 1999, then from
the Type B Event Date until the second subsequent annual meeting of stockholders
of the Company after such Type B Event Date, (A) the Purchaser shall not make a
transfer of any of its Series D Preferred Stock, Series B Conversion Shares or
Series D Conversion Shares in a transaction available to all holders of Common
Stock on the same terms as to the Purchaser, unless such transaction has been
approved either by (I) the affirmative vote of not less than 80 percent of the
outstanding shares of the Company entitled to vote, or (II) at least two-thirds
(2/3) of the directors of the Company (which must include either (i) the Joint
Director if either (x) such Joint Director served in such position as of the
Type B Event Date, or (y) such Joint Director has been approved by a majority of
directors who were Common Stock Directors as of the Type B Event Date, or (ii)
at least one director who was a Common Stock Director prior to the Type B Event
Date, unless neither such Joint Director, nor any of such Common Stock Directors
continue to serve on the Board of Directors at such time) and (B) the Purchaser
shall not make a transfer of any of its Series D Preferred Stock, Series B
Conversion Shares or Series D Conversion Shares in a transaction other than one
available to all holders of Common Stock on the same terms as to the Purchaser,
unless such transaction has been approved either by (I) the affirmative vote of
not less 


                                          54
<PAGE>

than 80 percent of the outstanding shares of the Company entitled to vote, or
(II) at least 50 percent of the directors of the Company who are not the
Preferred Stock Directors or the Conversion Directors.  If a Type B Event Date
occurs prior to October 14, 1999, then from the Type B Event Date until the
second subsequent annual meeting of stockholders of the Company after such Type
B Event Date, none of the following actions or transactions shall be effected by
the Company or approved by the Company as a stockholder of any subsidiary of the
Company, and neither the Purchaser nor any other holder of Series D Preferred
Stock (other than a holder pursuant to a transfer permitted in paragraphs
(b)(ii) or (b)(iii) of this Section 6.14) shall engage in, or be a party to, any
of the following actions or transactions involving the Company or any subsidiary
of the Company, if, as of the record date for the determination of the
stockholders entitled to vote thereon, or consent thereto, any other
corporation, person or entity referred to in clauses (i) through (iv) of this
sentence beneficially owns or controls, directly or indirectly, five percent
(5%) or more of the outstanding shares of the Company entitled to vote:

         (i)   any merger or consolidation of the Company or any of its
subsidiaries with or into such other corporation, person or entity; or

         (ii)  any sale, lease, exchange or other disposition of all or any
substantial part of the assets of the Company or any of its subsidiaries to, or
with, such other corporation, person or entity; or

         (iii) the issuance or delivery of any voting securities of the
Company or any of its subsidiaries to such other corporation, person or entity
in exchange for cash, other assets or securities, or a combination thereof; or

         (iv)  any dissolution or liquidation of the Company;

PROVIDED, HOWEVER, that the prohibitions contained in this sentence shall not
apply with respect to any such action or transaction approved by (I) the
affirmative vote of not less than 80 percent of the outstanding shares of the
Company entitled to vote or (II) at least two-thirds (2/3) of the directors of
the Company (which must include either the Joint Director if either (x) such
Joint Director served in such position as of the Type B Event Date, or (y) such
Joint Director has been approved by a majority of directors who were Common
Stock Directors as of Type B Event Date, or at least one director who was a
Common Stock Director prior to the Type B Event Date, unless neither such Joint
Director, nor any of such Common Stock Directors continue to serve on the Board
of Directors at such time).  For purposes of the immediately preceding sentence,
a Person shall be deemed to own or control directly or indirectly, any
outstanding shares of stock of the Company (A) which it has the right to acquire
pursuant to any agreement, or upon the exercise of, conversion rights, warrants,
options or otherwise or (B) which are beneficially owned, directly or indirectly
(including shares deemed owned through application of clause (A) above) by any
other corporation, person or other entity (x) with which it or its "affiliate"
or "associate," (as defined below) has any agreement, arrangement, or
understanding for the purpose of acquiring, holding, voting or disposing of
stock of the Company or (y) which is its "affiliate" or "associate" as those
terms are defined under the Securities Exchange Act of 1934, as amended, and the
rules and regulations promulgated thereunder.


                                          55
<PAGE>

No transfer of Series B Preferred Stock or Series B Conversion Shares may be
made by Purchaser or any Carlyle Affiliate (other than a transfer described in
paragraph (b)(ii) or (b)(iii) of this Section 6.14), unless prior thereto, the
transferee in such transfer shall have entered into an agreement in form and
substance reasonably satisfactory to the Company, agreeing to be bound by the
terms of this Section 6.14(c).  Notwithstanding anything to the contrary
contained in this Section 6.14(c), the Purchaser shall not need any approval by
any directors, the Board of Directors or any stockholders under this Section
6.14 in order to transfer, sell or assign any of its Series B Conversion Shares
in the circumstances and the persons set forth in clauses (i), (ii) and (iii) of
Section 6.14(b).

         (d)   The Warrants and the Warrant Shares shall be transferable by
the Purchaser, subject to compliance with federal and state securities laws,
without the approval of the Board of Directors.

         (e)   Except in the case of a transfer pursuant to Rule 144
promulgated pursuant to the Securities Act, or any successor rule, prior to
consummating any private sale or transfer of Common Stock to any Person other
than a Carlyle Affiliate, the Purchaser shall provide to the Company the written
opinion of reputable legal counsel in form reasonably acceptable to the Company
that such sale or transfer is being made in compliance with applicable federal
securities laws.

6.15 EXPIRATION OF CERTAIN COVENANTS.

         The covenants contained in Sections 6.3, 6.5 and 6.9 of this Agreement
shall expire if, at any date after the Closing Date, the Purchaser and the
Carlyle Affiliates hold, and, upon conversion into Common Stock of all of the
Series B Preferred Stock or Series D Preferred Stock held by the Purchaser and
the Carlyle Affiliates, would hold less than 5% of the issued and outstanding
Common Stock of the Company on a fully diluted basis; PROVIDED, HOWEVER, that to
the extent that such covenants relate to or arise out of any Applicable Laws
relating to health care, the health care industry and the provision of health
care services, third party reimbursement (including Medicare and Medicaid),
public health and safety and wrongful death and medical malpractice), such
covenants shall expire if, at any date after the Closing Date, the Purchaser and
the Carlyle Affiliates hold less than 5% of the Series B Preferred Stock
originally purchased by the Purchaser.

                                     ARTICLE VII
                                CONDITIONS TO CLOSING

7.1  CONDITIONS TO EACH PARTY'S OBLIGATIONS.

         The respective obligation of each party to consummate the Closing on
the Closing Date is subject to the satisfaction or waiver, on or prior to the
Closing Date, of the condition that there shall be no injunction or court order
restraining consummation of all or any portion of the Transaction, there shall
be no pending or threatened Proceeding by or before a court or governmental body
brought by or on behalf of any Person or Governmental Entity seeking to 


                                          56
<PAGE>

restrain or invalidate all or any portion of the Transaction and there shall not
have been adopted any law or regulation making all or any portion of the
Transaction illegal.

7.2  CONDITIONS TO THE COMPANY'S OBLIGATIONS.

         The obligation of the Company to consummate the Transaction on the
Closing Date is subject to the satisfaction or waiver, by the Company, on or
prior to the Closing Date of each of the following conditions:

         (a)   All representations and warranties of the Purchaser contained
in this Agreement shall be true and correct in all material respects at and as
of the Closing Date as if such representations and warranties were made at and
as of the Closing Date, and the Purchaser shall have performed in all material
respects all agreements and covenants required hereby to be performed by it
prior to or at the Closing Date.  There shall be delivered to the Company a
certificate (signed by an authorized person of the Purchaser) to the foregoing
effect.

         (b)   All consents, approvals, Permits and waivers from Governmental
Entities and other parties necessary to permit the Company and the Purchaser to
consummate the Transaction shall have been obtained. 

         (c)   The Purchaser shall have delivered to the Company the opinions
of Gibson, Dunn & Crutcher, LLP, counsel to the Purchaser, in the form attached
hereto as Exhibit H.

         (d)   No order enjoining the sale of the Securities or the GE
Warrants or the proposed issuance of the Series C Preferred Stock, the Series B
Conversion Shares, the Series C Conversion Shares, the Series D Preferred Stock,
the Series D Conversion Shares, the Warrant Shares or the GE Warrant Shares
shall have been issued and no proceedings for such purpose shall be pending or
threatened by the Commission or any commissioner of corporations or similar
officer of any state having jurisdiction over the Transaction.  At the time of
the Closing, the sale and issuance of the Securities, the GE Warrants, the
Series C Preferred Stock, the Series B Conversion Shares, the Series C
Conversion Shares, the Series D Preferred Stock, the Series D Conversion Shares,
the Warrant Shares and the GE Warrant Shares shall be legally permitted by all
laws and regulations to which the Company and the Purchaser are subject.

         (e)   The Supplemental Service Fee shall have been terminated by GE.

         (f)   The Purchaser shall have delivered to the Company, unless
waived in writing by the Company, such other documents relating to the
Transaction as the Company or the Company's counsel may reasonably request.

         (g)   The lender under the Credit Facility shall have executed and
delivered the Credit Facility and all related documents.


                                          57
<PAGE>

7.3  CONDITIONS TO THE PURCHASER' OBLIGATIONS.

         The obligation of the Purchaser to consummate the Closing on the
Closing Date is subject to the satisfaction or waiver on or prior to the Closing
Date of each of the following conditions:

         (a)   All representations and warranties of the Company contained in
this Agreement shall be true and correct in all material respects at and as of
the Closing Date as if such representations and warranties were made at and as
of the Closing Date, and the Company shall have performed in all material
respects all agreements and covenants required hereby to be performed by it
prior to or at the Closing Date.  There shall be delivered to the Purchaser a
certificate (signed by the President and Chief Executive Officer and the
Secretary of the Company) to the foregoing effect.

         (b)   All consents, approvals, Permits and waivers from Governmental
Entities and other parties necessary to permit the Purchaser and the Company to
consummate the Closing shall have been obtained.  

         (c)   The Company shall have delivered to the Purchaser the opinions
of McDermott, Will & Emery, special counsel for the Company, in the form
attached hereto as Exhibit I. 

         (d)   Since the date of this Agreement, there shall not have been any
Material Adverse Effect on the Company.

         (e)   All actions shall have been taken by the Company and its Board
of Directors so that, immediately upon the Purchaser's purchase of the
Securities, the Board of Directors shall consist of eight (8) directors, two (2)
of whom were elected by the holders of Series B Preferred Stock pursuant to the
Series B Certificate of Designation and one (1) of whom was elected by the
holders of Series C Preferred Stock pursuant to the Series C Certificate of
Designation.

         (f)   The Amended Bylaws shall be in effect in the form set forth in
Exhibit A hereto.

         (g)   The Company shall have provided to the Purchaser a copy of the
insurance policies together with the riders and schedules thereto which evidence
compliance with the provisions set forth in Section 6.7.

         (h)   No order enjoining the sale of the Securities or the GE
Warrants or the proposed issuance of the Series C Preferred Stock, the Series B
Conversion Shares, the Series C Conversion Shares, the Series D Preferred Stock,
the Series D Conversion Shares, the Warrant Shares or the GE Warrant Shares
shall have been issued and no Proceedings for such purpose shall be pending or
threatened by the Commission or any commissioner of corporations or similar
officer of any state having jurisdiction over the Transaction.  At the time of
the Closing, the sale and issuance of the Securities, the GE Warrants, the
Series C Preferred Stock, the Series B Conversion Shares, the Series C
Conversion Shares, the Series D Preferred Stock, the Series D 


                                          58
<PAGE>

Conversion Shares, the Warrant Shares and the GE Warrant Shares shall be legally
permitted by all laws and regulations to which the Company and the Purchaser are
subject.  

         (i)  The Company shall have adopted and duly filed with the Secretary
of State of Delaware the Series B Certificate of Designation, the Series C
Certificate of Designation, and the Series D Certificate of Designation and each
such Certificate shall have become effective under Delaware law.

         (j)  The Company shall have delivered to the Purchaser, unless waived
in writing by the Purchaser:  

                   (A)  copies (certified by the Secretary of the Company) of
     the resolutions duly adopted by the Board of Directors of the Company,
     authorizing the execution, delivery and performance of this Agreement and
     the other agreements contemplated hereby; 

                   (B)  a copy (certified by the Secretary of the State of
     Delaware) of the certificate of incorporation as amended through the date
     of the Closing and a copy (certified by the Secretary of the Company) of
     the Company's Amended Bylaws as amended through the date of the Closing;
     and 

                   (C)  such other documents relating to the Transaction as the
     Purchaser or the Purchaser's counsel may reasonably request.  

         (k)  The Company shall have (A) terminated the Supplemental Service
Fee described in the Proxy Statement and issued the Series C Preferred Stock in
respect thereto and (B) issued the GE Warrants.

         (l)  The Company and the lender under the Credit Agreement shall have
executed and delivered the Credit Facility and related documents.

                                     ARTICLE VIII
                                   INDEMNIFICATION

8.1  SURVIVAL OF REPRESENTATIONS, ETC.

         The representations and warranties of the parties hereto contained
herein shall survive the Closing for a period of sixty (60) days following
receipt by the Purchaser of the audited financial statements of the Company for
the Fiscal Year ended June 30, 1998, except as to (a) the representations and
warranties set forth in Sections 4.8, 4.9, 4.13 (to the extent related to any
Applicable Laws relating to health care, the health care industry and the
provision of health care services, third party reimbursement (including Medicare
and Medicaid), public health and safety and wrongful death and medical
malpractice), 4.16, 4.17, 4.32, 4.33, 4.34, 4.35 and 4.36 hereof, which shall
survive for the period of the statute of limitations applicable thereto; (b) any
matter as to which a Claim has been submitted in writing to the Company prior to
such date; and (c) any matter based on fraud by the Company in making any of the
representations and 


                                          59
<PAGE>

warranties contained in this Agreement.  With respect to the matters set forth
in (b) and (c) above, the cause of action in favor of the Purchaser in respect
of such matters shall survive indefinitely.  

8.2  INDEMNIFICATION BY THE COMPANY.

         The Company agrees to indemnify and hold harmless the Purchaser, its
Subsidiaries, its Affiliates, the Carlyle Affiliates and the directors,
officers, employees, stockholders and partners of each of the Purchaser, its
Subsidiaries, its Affiliates and the Carlyle Affiliates (individually, an
"Indemnified Party" and collectively, the "Indemnified Parties"),  from and
against any liabilities, obligations, losses, damages, penalties, actions,
judgments, suits, claims, costs and reasonable attorneys' fees, expenses and
disbursements of any kind ("Losses") which may be imposed upon or incurred by
the Purchaser in any manner relating to or arising out of any untrue
representation, breach of warranty or failure to perform any covenant or
agreement by the Company contained in this Agreement (including, without
limitation, the schedules and exhibits hereto), the Series B Certificate of
Designation, the Series D Certificate of Designation, the Ancillary Agreements
or in any certificate or document delivered pursuant hereto or thereto or
arising out of any Applicable Laws relating to health care, the health care
industry and the provision of health care services, third party reimbursement
(including Medicare and Medicaid), public health and safety and wrongful death
and medical malpractice or otherwise relating to or arising out of the
Transaction; PROVIDED, HOWEVER, that the Company shall provide no
indemnification with respect to Losses relating to or arising out of the
Transaction if such Losses were caused principally by the gross negligence or
willful misconduct of one or more Indemnified Parties.

8.3  LIMITATION ON INDEMNITIES.

         No Claim may be made against the Company for indemnification pursuant
to Section 8.2 until the aggregate dollar amount of all Losses indemnifiable
pursuant to Section 8.2 exceeds $250,000 (in which event the Purchaser shall be
entitled to claim the whole amount of such Losses and not merely the excess). 
In no event shall the aggregate amount paid by the Company pursuant to Section
8.2 exceed $25 million with respect to Claims arising out of or related to
matters other than breaches of the representations, warranties and covenants
contained in Sections 4.13 (to the extent related to Applicable Laws relating to
health care, the health care industry and the provision of health care services,
third party reimbursement (including Medicare and Medicaid), public health and
safety and wrongful death and medical malpractice), 4.32, 4.33, 4.34, 4.35, 4.36
and 6.9 (to the extent related to Applicable Laws relating to health care, the
health care industry and the provision of health care services, third party
reimbursement (including Medicare and Medicaid), public health and safety and
wrongful death and medical malpractice), as to which breaches of the
representations, warranties and covenants contained in such Sections, there
shall be no cap on the Company's indemnification obligations under Section 8.2.

8.4  LOSSES.

         The term "Losses" as used in this Article VIII is not limited to 
matters asserted by third parties but includes Losses incurred or sustained 
by an Indemnified Party in the absence of third party claims.  The difference 
between (a) any insurance proceeds received by an Indemnified 

                                          60
<PAGE>

Party in respect of Losses and (b) the legal costs and expenses incurred by 
such Indemnified Party, if any, in seeking the payment of such insurance 
proceeds from the insurer or insurers who insured against such Loss, shall be 
deducted from any Claim for indemnification made by such Indemnified Party 
against the Company.  Payments by an Indemnified Party of amounts for which 
such Indemnified Party is indemnified hereunder shall not be a condition 
precedent to recovery.  If, after payment of any Claim by the Company to an 
Indemnified Party, such Indemnified Party receives insurance proceeds on 
account of the Loss indemnified by such payment by the Company, such 
Indemnified Party shall pay to the Company the lesser of (a) the amount of 
the payment on the Claim with respect to such Loss by the Company to the 
Indemnified Party and (b) the amount of such insurance proceeds minus the 
legal costs and expenses incurred by such Indemnified Party, if any, in 
seeking the payment of such insurance proceeds from the insurer or insurers 
who insured against such Loss.

8.5  DEFENSE OF CLAIMS.

         If a claim for Losses (a "Claim") is to be made by an Indemnified
Party, such Indemnified Party shall give written notice (a "Claim Notice") to
the Company as soon as practicable after such Indemnified Party becomes aware of
any fact, condition or event which may give rise to Losses for which
indemnification may be sought under this Article VIII.  If any lawsuit or
enforcement action is filed against any Indemnified Party hereunder, notice
thereof (a "Third Party Notice") shall be given to the Company as promptly as
practicable (and in any event within ten (10) calendar days after the service of
the citation or summons).  The failure of any Indemnified Party to give timely
notice hereunder shall not affect rights to indemnification hereunder, except to
the extent that the Company demonstrates actual damage caused by such failure. 
After receipt of a Third Party Notice, if the Company shall acknowledge in
writing to the Indemnified Party that the Company shall be obligated under the
terms of its indemnity hereunder in connection with such lawsuit or action, then
the Company shall be entitled, if it so elects, (a) to take control of the
defense and investigation of such lawsuit or action, (b) to employ and engage
attorneys of its own choice to handle and defend the same, at the Company's
cost, risk and expense unless the named parties to such action or proceeding
include both the Company and the Indemnified Party and the Indemnified Party has
been advised in writing by counsel that there may be one or more legal defenses
available to such Indemnified Party that are different from or additional to
those available to the Company, and (c) to compromise or settle such claim,
which compromise or settlement (i) shall be made and entered into only with the
advance written consent of the Indemnified Party (in its sole discretion) if
such compromise or settlement, in the reasonable judgment of the Indemnified
Party, would cause more than de minimis harm to such Indemnified Party's
business reputation, (ii) may be made and entered into in the sole discretion of
the Company if such compromise or settlement provides for the payment solely of
cash to the claimant in such lawsuit in full satisfaction of such claimant's
claim therein and includes a release of the Indemnified Party to the maximum
extent permitted by law (and would not otherwise, in the reasonable judgment of
such Indemnified Party, cause more than de minimis harm to such Indemnified
Party's business reputation) and (iii) otherwise shall be entered into only with
the advance written consent of the Indemnified Party (such consent not to be
unreasonably withheld).  The Indemnified Party shall cooperate in all reasonable
respects with the Company and such attorneys in the investigation, trial 
and defense of such lawsuit or action and any appeal arising therefrom; and the
Indemnified Party may, at its own cost, participate in the investigation, trial

                                          61
<PAGE>

and defense of such lawsuit or action and any appeal arising therefrom and
appoint its own counsel therefor, at its own cost.  The parties shall also
cooperate with each other in any notifications to insurers.  If the Company
fails to assume the defense of such claim within fifteen (15) calendar days
after receipt of the Third Party Notice, the Indemnified Party against which
such claim has been asserted will (upon delivering notice to such effect to the
Company) have the right to undertake the defense, compromise or settlement of
such claim at the Company's cost and the Company shall have the right to
participate therein at its own cost; provided, however, that such claim shall
not be compromised or settled without the written consent of the Company, which
consent shall not be unreasonably withheld.  In the event the Indemnified Party
assumes the defense of the claim, the Indemnified Party will keep the Company
reasonably informed of the progress of any such defense, compromise or
settlement.  Notwithstanding the foregoing, the Company shall not be liable for
the reasonable fees and expenses of more than one firm of attorneys at any time
for any and all Indemnified Parties (which firm shall be designated in writing
by such Indemnified Party or Parties) in connection with any one such action or
proceeding or multiple actions or proceedings provided that they are held in the
same jurisdiction, arising out of the same general allegations or circumstances.

                                      ARTICLE IX
                                    MISCELLANEOUS

9.1  FEES AND EXPENSES.

         The Company shall be responsible for the payment of all expenses
incurred by the Company in connection with the Transaction, regardless of
whether any portion of the Transaction closes, including, without limitation,
all fees and expenses of the Company's legal counsel and all third party
consultants engaged by the Company to assist in the Transaction.  

9.2  INJUNCTIVE RELIEF.

         The parties hereto acknowledge and agree that irreparable damage would
occur in the event any of the provisions of this Agreement were not performed in
accordance with their specific terms or were otherwise breached.  It is
accordingly agreed that the parties shall be entitled to an injunction or
injunctions to prevent breaches of the provisions of this Agreement and shall be
entitled to enforce specifically the provisions of this Agreement in any court
of the United States or any state thereof having jurisdiction, in addition to
any other remedy to which the parties may be entitled under this Agreement or at
law or in equity

9.3  ASSIGNMENT.

         Neither this Agreement nor any of the rights or obligations hereunder
may be assigned by the Company without the prior written consent of the
Purchaser, or by the Purchaser without the prior written consent of the Company,
except that the Purchaser may, without such consent, assign, in whole or in
part, the right to acquire the Securities hereunder to a Carlyle Affiliate. 
Subject to the foregoing, this Agreement shall be binding upon and inure to the
benefit of the parties hereto and their respective successors and assigns, and
no other person shall have any right, benefit or obligation hereunder.


                                          62
<PAGE>

9.4  NOTICES.

         Unless otherwise provided herein, any notice, request, instruction or
other document to be given hereunder by any party to the other shall be in
writing and delivered by hand-delivery, registered first-class mail, return
receipt requested, facsimile or air courier guaranteeing overnight delivery, as
follows:
              
     If to the Company:    InSight Health Services Corp.
                           4400 MacArthur Boulevard, Suite 800
                           Newport Beach, CA  92660
                           Facsimile:  714.851.4488
                           Attn:  Chief Financial Officer
     
     With a copy to:       McDermott, Will & Emery
                           2049 Century Park East - 34th Floor
                           Los Angeles, CA  90067
                           Facsimile:  310.277.4730
                           Attn:  Mark J. Mihanovic, Esq.
                   
                                         and
                   
                           Arent, Fox, Kintner, Plotkin & Kahn
                           1050 Connecticut Avenue, N.W., Suite 600
                           Washington, D.C.  20036
                           Facsimile:  202.857.6395
                           Attn:  Gerald P. McCartin, Esq.
     
     If to the Purchaser:  c/o The Carlyle Group
                           1001 Pennsylvania Avenue, N W
                           Suite 2205
                           Washington, D.C.  20004
                           Facsimile:  202.347.9250
                           Attn:  David W. Dupree


                                          63
<PAGE>

     With a copy to:       Gibson, Dunn & Crutcher LLP
                           1050 Connecticut Avenue, N.W.
                           Washington, D.C.  20036
                           Facsimile:  202.467.0539
                           Attn:  John F. Olson, Esq.

or to such other place and with such other copies as either party may designate
as to itself by written notice to the other.  All such notices, requests,
instructions or other documents shall be deemed to have been duly given at the
time delivered by hand, if personally delivered, four (4) business days after
being deposited in the mail, postage prepaid, if mailed, when receipt is
acknowledged by addressee, if by facsimile, or on the next business day, if
timely delivered to an air courier guaranteeing overnight delivery.

9.5  CHOICE OF LAW; JURISDICTION; VENUE.

         This Agreement shall be construed, interpreted and the rights of the
parties determined in accordance with the internal laws of the State of New
York, without regard to the conflict of law principles thereof; except with
respect to matters of law concerning the internal corporate affairs of any
corporate entity which is a party to or the subject of this Agreement, and as to
those matters the law of the jurisdiction under which the respective entity
derives its powers shall govern.  The parties irrevocably elect as the sole
judicial forum for the adjudication of any matters arising under or in
connection with this Agreement, the Ancillary Agreements and the transactions
contemplated hereby and thereby, and consent to the jurisdiction of, the courts
of the United States of America for the Southern District of New York and of the
State of New York in Manhattan in connection with the adjudication of any matter
arising under or in connection with this Agreement, the Ancillary Agreements and
the transactions contemplated hereby and thereby, and waive any and all
objections to such jurisdiction or venue that they may have.

9.6  ENTIRE AGREEMENT.

         All Exhibits and Schedules attached to this Agreement by this
reference are incorporated herein as if fully set forth herein.  This Agreement,
including all Exhibits and Schedules attached hereto, constitutes the entire
agreement among the parties pertaining to the subject matter hereof and
supersedes all prior agreements, understandings, negotiations and discussions,
whether oral or written, of the parties, including the written summary of
proposed terms between the Company and the Purchaser dated September 15, 1997. 
Capitalized terms used in the Exhibits and Schedules but not defined therein
shall have the respective meanings ascribed to such terms in this Agreement. 
Any item disclosed in one Schedule shall be deemed to have been disclosed in all
other Schedules.

9.7  COUNTERPARTS.

         This Agreement may be executed in two or more counterparts, each of
which shall be deemed an original, but all of which together shall constitute
one and the same instrument.


                                          64
<PAGE>

9.8  INVALIDITY.

         In the event that any one or more of the provisions contained in this
Agreement or in any other instrument referred to herein shall for any reason be
held to be invalid, illegal or unenforceable in any respect, such invalidity,
illegality or unenforceability shall not affect any other provision of this
Agreement or any other such instrument.

9.9  HEADINGS; LANGUAGE.

         The headings of the Articles and Sections herein are inserted for
convenience of reference only and are not intended to be a part of or to affect
the meaning or interpretation of this Agreement.  In this Agreement, unless the
context otherwise requires, the masculine, feminine and neuter genders and the
singular and the plural include one another.  Whenever used in this Agreement:
the term "Knowledge," with respect to any Person, means the actual knowledge of
such Person, after reasonable inquiry.  For purposes hereof, a Person shall be
deemed to have actual knowledge of the contents of all books and records with
respect to which such Person has reasonable access.  Without limiting the
generality of the foregoing, with respect to any Person that is a corporation,
partnership or other business entity, actual knowledge shall be deemed to
include the actual knowledge of all principal employees of any such Person
(which, for purposes of the Company, shall include without limitation those
Persons listed in Exhibit J) as well as the Chief Executive Officer, President,
Chief Financial Officer and all Vice Presidents in the case of corporate
Persons, and general partners in the case of general or limited partnerships, as
the case may be; "receipt by the Company or any Subsidiary of notice," and
similar phrases, means physical receipt at a location owned, leased or operated
by the Company or its Subsidiaries; "including" means including, without
limitation.  All capitalized terms used but not defined in this Agreement have
the meaning given to such terms in the Certificate of Incorporation, or, if not
in the Certificate of Incorporation, in the Amended Bylaws.

9.10 LIMITATION OF LIABILITY.

         In no event shall (a) any Carlyle Affiliate, (b) any member or
representative of the Purchaser or of any Carlyle Affiliate or (c) any direct or
indirect member, stockholder, officer, director, limited partner, employee or
any other such person of the Purchaser or any Carlyle Affiliate (other than a
general partner of the entities constituting the Purchaser), be personally
liable for any obligation of the Purchaser under this Agreement.  In no event
shall any direct or indirect stockholder, officer, director, partner, employee
or salesperson of the Company or any Subsidiary or any other such Person be
personally liable for any obligation of the Company under this Agreement.

9.11 AMENDMENTS AND WAIVERS.

         Any term of this Agreement may be amended and the observance of any
term of this Agreement may be waived (either generally or in a particular
instance and either retroactively or prospectively) only with the written
consent of the Purchaser, the Company and General Electric Company.


                                          65
<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused this Securities
Purchase Agreement to be duly executed as of the day and year first above
written.


                                THE COMPANY:

                                INSIGHT HEALTH SERVICES CORP.,
                                a Delaware corporation


                                     By
                                           --------------------------------
                                     Name:
                                           --------------------------------
                                     Title:
                                          --------------------------------
 

                                THE PURCHASER:

                                CARLYLE PARTNERS II, L.P.,
                                a Delaware limited partnership

                                By:  TC Group, L.L.C., as the General Partner

                                     By:       
                                          --------------------------------
                                     Name:     
                                          --------------------------------
                                     Title: Managing Director


                                CARLYLE PARTNERS III, L.P.,
                                a Delaware limited partnership

                                By:  TC Group, L.L.C., as the General Partner

                                    By:       
                                    --------------------------------
                                     Name:     
                                    --------------------------------
                                     Title: Managing Director


                                CARLYLE INTERNATIONAL PARTNERS II, L.P.,
                                a Cayman Islands exempted limited partnership

                                By: TC Group, L.L.C., as the General Partner

                                    By:       
                                          --------------------------------
                                    Name:     
                                          --------------------------------
                                    Title: Managing Director

<PAGE>

                                CARLYLE INTERNATIONAL PARTNERS III, L.P.,
                                a Cayman Islands exempted limited partnership

                                By:  TC Group, L.L.C., as the General Partner

                                    By:       
                                          --------------------------------
                                    Name:     
                                          --------------------------------
                                    Title: Managing Director


                                C/S INTERNATIONAL PARTNERS,
                                a Cayman Islands general partnership

                                By: TC Group, L.L.C., as the General Partner

                                    By:       
                                          --------------------------------
                                    Name:     
                                          --------------------------------
                                    Title: Managing Director

                                STATE BOARD OF ADMINISTRATION OF
                                FLORIDA,
                                a separate account maintained pursuant to an
                                Investment Management Agreement dated as of
                                September 6, 1996 between the State Board of
                                Administration of Florida, Carlyle Investment
                                Group, L.P. and Carlyle Investment Management,
                                L.L.C.

                                By: Carlyle Investment Management, L.L.C.,
                                    as Investment Manager

                                     By:       
                                          --------------------------------
                                     Name:     
                                          --------------------------------
                                     Title:         
                                          --------------------------------



                                          2

<PAGE>

                                CARLYLE INVESTMENT GROUP, L.P.,
                                a Delaware limited partnership

                                By: TC Group, L.L.C., as the General Partner

                                    By:       
                                          --------------------------------
                                     Name:     
                                          --------------------------------
                                     Title: Managing Director


                                CARLYLE-INSIGHT INTERNATIONAL
                                PARTNERS, L.P., 
                                a Cayman Islands exempted limited partnership

                                By: TC Group, L.L.C., as the General Partner

                                     By:       
                                          --------------------------------
                                     Name:     
                                          --------------------------------
                                     Title: Managing Director


                                CARLYLE-INSIGHT PARTNERS, L.P.,
                                a Delaware limited partnership

                                By: TC Group, L.L.C., as the General Partner

                                     By:       
                                          --------------------------------
                                     Name:     
                                          --------------------------------
                                     Title: Managing Director


                                          3

<PAGE>

                            INSIGHT HEALTH SERVICES CORP.
                                  IRREVOCABLE PROXY


    The undersigned agrees to, and hereby grants to Carlyle Partners II, L.P.,
a Delaware limited partnership, an irrevocable proxy pursuant to the provisions
of Section 212 of the Delaware General Corporation Law to vote, or to execute
and deliver written consents or otherwise act with respect to, all shares of
capital stock (the "Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now
owned or hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any applicable
laws or regulations governing the rights and powers of shareholders of a
Delaware corporation in connection with the nomination of the Joint Director and
in connection with the matters identified in Sections 6.12(a) - 6.12(v),
inclusive, of a certain Securities Purchase Agreement, dated as of October 14,
1997 among the Company and certain purchasers, as provided in a certain Voting
Agreement, dated as of October 14, 1997, among the purchasers under such
Securities Purchase Agreement.  The undersigned hereby affirms that this is
given as a condition of said voting agreement and as such is coupled with an
interest and is irrevocable.  It is further understood by the undersigned that
this proxy may be exercised by Carlyle Partners II, L.P. for the period
beginning the date hereof and ending on the day immediately preceding the
Company's 2020 annual stockholders' meeting, unless sooner terminated in
accordance with provisions of said voting agreement.

    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE ENFORCEABLE AGAINST
ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Date this 14th day of October, 1997.



                             CARLYLE PARTNERS III, L.P.
                             a Delaware limited partnership

                             By:  TC Group, L.L.C., its General Partner



                                  By:
                                        --------------------------------
                                  Name:
                                        --------------------------------
                                  Title:
                                        --------------------------------

<PAGE>

                                                                     EXHIBIT 3

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------






                                  WARRANT AGREEMENT

                                       BETWEEN

                            INSIGHT HEALTH SERVICES CORP.

                                         AND

                        CERTAIN WARRANT HOLDERS DEFINED HEREIN

                             DATED AS OF OCTOBER 14, 1997







- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------



<PAGE>


                                  WARRANT AGREEMENT

    THIS WARRANT AGREEMENT (the "Agreement") is made as of October 14, 1997
(the "Effective Date"), between InSight Health Services Corp., a Delaware
corporation (the "Company"), and Carlyle Partners II, L.P., a Delaware limited
partnership ("CP II"), Carlyle Partners III, L.P., a Delaware limited
partnership ("CP III"), Carlyle International Partners II, L.P., a Cayman
Islands exempted limited partnership ("CIP II"), Carlyle International Partners
III, L.P., a Cayman Islands exempted limited partnership ("CIP III"), C/S
International Partners, a Cayman Islands general partnership ("C/S"), the State
Board of Administration of Florida ("SBAF"), Carlyle Investment Group, L.P., a
Delaware limited partnership("CIG"), Carlyle-Insight International Partners,
L.P., a Cayman Islands exempted limited partnership ("C-IIP"), and
Carlyle-Insight Partners, L.P., a Delaware limited partnership ("C-IP") (CP II,
CP III, CIP II, CIP III, C/S, SBAF, CIG, C-IIP and C-IP, collectively, the
"Warrant Holders" and, individually, a "Warrant Holder").

                                W I T N E S S E T H :

    WHEREAS, the Company has entered into (i) that certain Securities Purchase
Agreement with the Warrant Holders dated as of October 14, 1997 (the "Purchase
Agreement"), pursuant to which the Company agrees, among other things, to issue
to the Warrant Holders warrants (the "Warrants") to purchase up to an aggregate
of two hundred fifty thousand (250,000) shares of common stock, $.001 par value
per share, of the Company (the "Common Stock," and the Common Stock issuable
upon exercise of the Warrants being herein referred to as the "Warrant Shares"),
and (ii) that certain Securities Purchase Agreement with General Electric
Company ("GE") dated as of October 14, 1997, pursuant to which the Company
agrees, among other things, to issue to GE warrants (the "GE Warrant") to
purchase up to an aggregate of two hundred fifty hundred thousand (250,000)
shares of Common Stock of the Company.  Each Warrant shall be a warrant to
purchase one (1) Warrant Share, unless and until adjusted pursuant to Section 10
hereof.  Certain terms used herein and not elsewhere defined are defined in the
Purchase Agreement.

    NOW, THEREFORE, in consideration of the premises and the mutual agreements
herein set forth, and for other good and lawful consideration, the receipt,
sufficiency and adequacy of which are hereby acknowledged, the parties hereto
agree as follows:

    SECTION 1.     WARRANT CERTIFICATE.

    The certificates evidencing the Warrants (the "Warrant Certificates") to be
delivered pursuant to this Agreement shall be in registered form only and shall
be substantially in the form set forth in Exhibit A attached hereto.

    SECTION 2.     EXECUTION OF WARRANT CERTIFICATE.

    (a)  The Warrant Certificates shall be signed on behalf of the Company by
its Chairman of the Board of Directors (the "Board") or its President or a Vice
President, and by its Secretary or an Assistant Secretary under its corporate
seal.  Each such signature upon the Warrant Certificates may be in the form of a
facsimile signature of the present or any future Chairman of the Board,
President, Vice President, Secretary or Assistant Secretary, as the case may be,
and may be imprinted or otherwise reproduced on the


                                          1
<PAGE>

Warrant Certificates.  The seal of the Company may be in the form of a facsimile
thereof and may be impressed, affixed, imprinted or otherwise reproduced on the
Warrant Certificates.

    (b)  In case any officer of the Company who shall have signed any Warrant
Certificate shall cease to be such officer before the Warrant Certificate so
signed shall have been disposed of by the Company, such Warrant Certificate
nevertheless may be delivered or disposed of as though such person had not
ceased to be such officer of the Company; and any Warrant Certificate may be
signed on behalf of the Company by any person who, at the actual date of the
execution of such Warrant Certificate, shall be a proper officer of the Company
to sign such Warrant Certificate, although at the date of the execution of this
Agreement any such person was not such officer.

    SECTION 3.     REGISTRATION.

    The Company shall register the Warrant Certificates in a Warrant register
to be maintained by the Company (the "Warrant Register") when Warrants are
issued. The Company may deem and treat the registered holders of the Warrant
Certificates as the absolute owners thereof (notwithstanding any notation of
ownership or other writing thereon made by anyone) for all purposes and shall
not be affected by any notice to the contrary.

    SECTION 4.     REGISTRATION OF TRANSFERS AND EXCHANGES.

    (a)  The Company shall from time to time register the transfer of any
outstanding Warrant Certificate in the Warrant Register upon surrender thereof
accompanied by a written instrument or instruments of transfer in form
satisfactory to the Company, duly executed by the registered holder or holders
thereof or by the duly appointed legal representative thereof or by a duly
authorized attorney. Upon any such registration of transfer, a new Warrant
Certificate shall be issued to the transferee and the surrendered Warrant
Certificate shall be canceled and disposed of by the Company.

    (b)  The Warrant Holders agree that prior to any proposed transfer of the
Warrants or of the Warrant Shares, which transfer shall not be to any Person
engaged in the Business, if such transfer is not made pursuant to an effective
Registration Statement under the Securities Act of 1933, as amended (the
"Securities Act"), the Warrant Holder(s) will, if requested by the Company,
deliver to the Company:

         (1)  an investment representation letter reasonably satisfactory to
    the Company signed by the proposed transferee;

         (2)  an agreement by such transferee to the impression of the
    restrictive investment legend set forth below in Section 4(c) on the
    Warrants or the Warrant Shares;

         (3)  an agreement by such transferee that the Company may place a
    notation in the stock books of the Company or a "stop transfer order" with
    any transfer agent or registrar with respect to the Warrant Shares;

         (4)  an agreement by such transferee to be bound by the provisions of
    this Section 4 relating to the transfer of such Warrants or Warrant Shares;
    and

         (5)  except in the case of a transfer pursuant to Rule 144 promulgated
    pursuant to the Securities Act, or any successor rule, prior to
    consummating any private sale or transfer of such Warrants or Warrant
    Shares, the written opinion of reputable legal counsel in form reasonably


                                          2
<PAGE>

    acceptable to the Company that such sale or transfer is being made in
    compliance with applicable federal securities laws.

    (c)  The Warrant Holders agree that each certificate representing Warrants
or Warrant Shares will bear the following legend until such Warrants or Warrant
Shares have been sold pursuant to an effective registration statement under the
Securities Act:

         "THE SECURITIES EVIDENCED OR CONSTITUTED HEREBY HAVE BEEN
         ACQUIRED FOR INVESTMENT AND HAVE NOT BEEN REGISTERED UNDER
         THE SECURITIES ACT OF 1933, AS AMENDED. SUCH SECURITIES MAY
         NOT BE SOLD, TRANSFERRED, PLEDGED, HYPOTHECATED OR OTHERWISE
         DISPOSED OF IN THE ABSENCE OF REGISTRATION UNDER SAID ACT
         AND THE RULES AND REGULATIONS THEREUNDER AND OF ALL
         APPLICABLE STATE SECURITIES OR "BLUE SKY" LAWS OR AN
         EXEMPTION THEREFROM UNDER SAID ACT AND ALL APPLICABLE STATE
         SECURITIES OR "BLUE SKY" LAWS.  IN THE CASE OF A SALE OF THE
         SECURITIES EVIDENCED OR CONSTITUTED HEREBY, OTHER THAN A
         SALE PURSUANT TO A VALID REGISTRATION STATEMENT UNDER SAID
         ACT OR A SALE PURSUANT TO RULE 144 PROMULGATED UNDER SAID
         ACT, THE HOLDER OF THE SECURITIES EVIDENCED OR CONSTITUTED
         HEREBY SHALL PROVIDE TO THE CORPORATION THE WRITTEN OPINION
         OF REPUTABLE LEGAL COUNSEL IN FORM REASONABLY ACCEPTABLE TO
         THE CORPORATION THAT SUCH SALE OR TRANSFER IS BEING MADE IN
         COMPLIANCE WITH APPLICABLE FEDERAL SECURITIES LAWS."

    (d)  A Warrant Certificate may be exchanged at the option of the holder(s)
thereof, when surrendered to the Company at its office for another Warrant
Certificate or other Warrant Certificates of like tenor and representing in the
aggregate a like number of Warrants. A Warrant Certificate surrendered for
exchange shall be canceled and disposed of by the Company

    SECTION 5.     WARRANTS; EXERCISE OF WARRANTS.

    (a)  Subject to the terms of this Agreement, the Warrant Holders shall have
the right, which may be exercised during the period commencing on the Effective
Date until 5:00 p.m., Washington, D.C. time, on the fifth anniversary of the
Effective Date (the "Exercise Period"), to receive from the Company the number
of fully paid and non-assessable Warrant Shares that the Warrant Holder may at
the time be entitled to receive on exercise of the number of Warrants that the
Warrant Holder elects to exercise and payment of the Exercise Price (as defined
below) then in effect for such Warrant Shares.  In the alternative, the Warrant
Holder may exercise its right, during the Exercise Period, to receive Warrant
Shares on a net basis, such that, without payment of any funds kind, the Warrant
Holder receives that number of Warrant Shares equal to the number of Warrants
being exercised times the quotient of (i) the "fair market value" of a Warrant
Share (as defined below) minus the Exercise Price, divided by (ii) the fair
market value of a Warrant Share.  For purposes of the foregoing sentence, "fair
market value" of a Warrant Share shall mean the average of the closing prices of
the Common Stock's sales on all domestic securities exchanges on


                                          3
<PAGE>

which such Common Stock may at the time be listed, or, if there have been no
sales on any such exchange on any day, the average of the highest bid and lowest
asked prices on all such exchanges at the end of such day, or, if on any day
such Common Stock is not so listed, the average of the representative bid and
asked prices quoted on Nasdaq as of 4:00 P.M., New York time, on such day, or,
if on any day such Common Stock is not quoted on Nasdaq, the average of the
highest bid and lowest asked prices on such day in the domestic over-the-counter
market as reported by the National Quotation Bureau, Incorporated, or any
similar successor organization, in each such case averaged over a period of
twenty-one (21) business days consisting of the day as of which the "fair market
value" of the Warrant Shares is being determined and the twenty (20) consecutive
business days prior to such day; provided that if such Common Stock is listed on
any domestic securities exchange the term "business days" as used in this
sentence means business days on which such exchange is open for trading.  If at
any time such Common Stock is not listed on any domestic securities exchange or
quoted on Nasdaq or the domestic over-the-counter market, the "fair market
value" of the Warrant Shares shall be the fair value thereof determined by the
Company and approved by the Warrant Holder; provided that if such parties are
unable to reach agreement within a reasonable period of time, such fair market
value shall be determined by an appraiser reasonably selected by the Company and
reasonably approved by the Warrant Holder.  The determination of such appraiser
shall be final and binding on the Company and the Warrant Holder, and the fees
and expenses of such appraiser shall be paid by the Company, unless the fair
market value determined by such appraiser is less than five percent (5%) above
the value proposed in writing by the Company and rejected by the Warrant Holder
prior to the selection of such appraiser, in which event the fees and expenses
of such appraiser shall be for the Warrant Holder's account.  Each Warrant not
exercised prior to 5:00 p.m., Washington, D.C. time, on the fifth anniversary of
the Effective Date shall become void and all rights thereunder and all rights in
respect thereof under this agreement shall cease as of such time.  No
adjustments as to dividends will be made upon exercise of the Warrants.

    (b)  A Warrant may be exercised upon surrender to the Company at its office
designated for such purpose (the address of which is set forth in Section 14
hereof) of the certificate or certificates evidencing the Warrants to be
exercised with the form of election to purchase on the reverse thereof duly
filled in and signed, and upon (i) payment to the Company of the exercise price
of ten dollars ($10.00) per Warrant Share, as adjusted as herein provided (as so
adjusted, the "Exercise Price"), for the number of Warrant Shares in respect of
which such Warrants are then exercised, or (ii) the Warrant Holder's exercise of
its right to receive Warrant Shares on a net basis, as more fully described in
Section 5(a).  Payment of the aggregate Exercise Price shall be made (i) in cash
or by certified or official bank check payable to the order of the Company or
(ii) in the manner provided in subsection (a) of this Section 5.

    (c)  Subject to the provisions of Section 6 hereof, upon such surrender of
Warrants and payment of the Exercise Price, the Company shall issue and cause to
be delivered with all reasonable dispatch to or upon the written order of the
Warrant Holder and in such name or names as the Warrant Holder may designate, a
certificate or certificates for the number of full Warrant Shares issuable upon
the exercise of such Warrants together with cash as provided in Section 11;
PROVIDED, HOWEVER, that if any consolidation, merger, or sale or other transfer
of all or substantially all of the assets of the Company is proposed to be
effected by the Company, or a tender offer or an exchange offer for shares of
Common Stock of the Company shall be made, upon such surrender of Warrants and
payment of the Exercise Price as aforesaid, the Company shall, as soon as
practicable, but in any event not later than five business days thereafter,
issue and cause to be delivered the full number of Warrant Shares issuable upon
the exercise of such Warrants in the manner described in this sentence together
with cash as provided in Section 11.  Such certificate or certificates shall be
deemed to have been issued and any person so designated to be named therein
shall be deemed to have become a holder of record of such Warrant Shares as of
the date of the surrender of such Warrants and payment of the Exercise Price.


                                          4
<PAGE>


    (d)  The Warrants shall be exercisable, at the election of the holder
thereof, either in full or from time to time in part and, in the event that a
Warrant Certificate evidencing Warrants is exercised in respect of fewer than
all of the Warrant Shares issuable on such exercise at any time prior to the
date of expiration of the Warrants, a new Warrant Certificate evidencing the
remaining Warrant or Warrants will be issued and delivered by the Company and at
its expense pursuant to the provisions of this Section and of Section 2 hereof.

    (e)  All Warrant Certificates surrendered upon exercise of Warrants shall
be canceled and disposed of by the Company. The Company shall keep copies of
this Agreement and any notices given or received hereunder available for
inspection by the Warrant Holder during normal business hours at its office.

    SECTION 6.     PAYMENT OF TAXES.

    The Company will pay all documentary stamp taxes or other similar taxes
attributable to the initial issuance of Warrant Shares upon the exercise of
Warrants; PROVIDED, HOWEVER, that the Company shall not be required to pay any
tax or taxes which may be payable in respect of any transfer involved in the
issue of any Warrant Certificate or any certificates for Warrant Shares in a
name other than that of the registered holder of a Warrant Certificate
surrendered upon the exercise of a Warrant, and the Company shall not be
required to issue or deliver such Warrant Certificates unless or until the
person or persons requesting the issuance thereof shall have paid to the Company
the amount of such tax or shall have established to the satisfaction of the
Company that such tax has been paid.

    SECTION 7.     MUTILATED OR MISSING WARRANT CERTIFICATES.

    In case any of the Warrant Certificates shall be mutilated, lost, stolen or
destroyed, the Company may issue, in exchange and substitution for, and upon
cancellation of, the mutilated Warrant Certificate, or in lieu of and
substitution for the Warrant Certificate lost, stolen or destroyed, a new
Warrant Certificate of like tenor and representing an equivalent number of
Warrants, but only upon receipt of evidence reasonably satisfactory to the
Company of such loss, theft or destruction of such Warrant Certificate and
indemnity, if requested, also reasonably satisfactory to it. Applicants for such
substitute Warrant Certificates shall also comply with such other reasonable
regulations and pay such other reasonable charges as the Company may prescribe.

    SECTION 8.     RESERVATION OF WARRANT SHARES.

    (a)  The Company will at all times reserve and keep available, free from
preemptive rights, out of the aggregate of its authorized but unissued Common
Stock or its authorized and issued Common Stock held in its treasury, for the
purpose of enabling it to satisfy any obligation to issue Warrant Shares upon
exercise of Warrants, the maximum number of shares of Common Stock which may
then be deliverable upon the exercise of all outstanding Warrants.

    (b)  The Company or, if appointed, the transfer agent for the Common Stock
(the "Transfer Agent") and every subsequent Transfer Agent for any shares of the
Company's capital stock issuable upon the exercise of any of the rights of
purchase aforesaid will be irrevocably authorized and directed at all times to
reserve such number of authorized shares as shall be required for such purpose.
The Company will keep a copy of this Agreement on file with the Transfer Agent
and with every subsequent transfer agent for any shares of the Company's capital
stock issuable upon the exercise of the rights of purchase represented


                                          5
<PAGE>

by the Warrants.  The Company will furnish such Transfer Agent a copy of all
notices of adjustments and certificates related thereto transmitted to each
holder pursuant to Section 13 hereof.

    (c)  Before taking any action which would cause an adjustment pursuant to
Section 10 hereof to reduce the Exercise Price below the then par value (if any)
of the Warrant Shares, the Company will take any corporate action which may, in
the opinion of its counsel (which may be counsel employed by the Company), be
necessary in order that the Company may validly and legally issue fully paid and
nonassessable Warrant Shares at the Exercise Price as so adjusted.

    (d)  The Company covenants that all Warrant Shares which may be issued upon
exercise of Warrants will, upon issue, be fully paid, nonassessable, free of
preemptive rights and free from all taxes, liens, charges and security interests
with respect to the issue thereof.

    SECTION 9.     STOCK EXCHANGE LISTINGS.

    The Company will from time to time take all commercially reasonable action,
at its expense, which may be necessary so that the Warrant Shares, immediately
upon their issuance upon the exercise of Warrants, will be listed and maintained
on the principal securities exchanges and markets within the United States of
America, if any, on which other shares of Common Stock are then listed and
registered under the Securities Exchange Act of 1934, as amended (the "Exchange
Act"), or authorized for quotation on Nasdaq, provided, however, that the
payment of any required listing or other fee shall always be deemed to be
"commercially reasonable" for purposes of this Section 9.

    SECTION 10.  ADJUSTMENT OF EXERCISE PRICE AND NUMBER OF WARRANT SHARES
ISSUABLE.

    (a)  In order to prevent the dilution of the rights granted under this
Agreement, the Exercise Price shall be subject to adjustment from time to time
as provided in this Section 10, and the number of shares of Common Stock
obtainable upon exercise of the Warrants shall be subject to adjustment from
time to time as provided in this Section 10.  For purposes of this Section 10,
"Trigger Price" shall be $6.75 per share of Common Equity; "Convertible
Security" means any stock or securities, directly or indirectly, convertible
into or exchangeable for Common Equity, including without limitation any
exchangeable debt securities; "Option" shall mean any rights or options to
subscribe for or purchase Common Equity or Convertible Securities.

    (b)  If and whenever the Company issues or sells or, in accordance with
Section 10(c), is deemed to have issued or sold, any share of Common Equity
without consideration or for a net consideration per share less than the Trigger
Price, then immediately upon such issuance or sale, the Exercise Price, which
shall equal $10 per share until the first such issuance or sale below the
Trigger Price, shall be reduced to the price per share determined by dividing
(i) an amount equal to the sum of (A) the number of shares of Common Equity
outstanding immediately prior to such issuance multiplied by the Exercise Price
in effect immediately prior to such issuance, and (B) the consideration, if any,
received by the Company upon such issuance, by (ii) the total number of shares
of Common Equity outstanding immediately after such issuance.

    Notwithstanding the foregoing, there shall be no adjustment to the Exercise
Price with respect to the granting of, or issuance of Common Equity upon
exercise of, stock options to employees of the Company authorized but not
granted as of the Effective Date for an aggregate of up to 300,000 shares of
Common Equity (as such shares are equitably adjusted for subsequent stock
splits, stock combinations, stock dividends and recapitalizations).  For
purposes of this Section 10, "Common Equity" means all shares


                                          6
<PAGE>

now or hereafter authorized of any class of common stock of the Company
(including the Common Stock) and any other stock of the Company, however
designated, authorized on or after the date hereof, which has the right (subject
always to prior rights of any class or series of preferred stock) to participate
in any distribution of the assets or earnings of the Company without limit as to
per share amount, and "Fully Diluted Equity" means, with respect to the Company
at any given time, (A) the number of shares of Common Equity actually
outstanding at such time, plus (B) the maximum number of shares of Common Equity
that are issuable upon the exercise, exchange or conversion of any unexpired
right or unexpired option (including the Warrants) to subscribe for, to purchase
or to receive Common Equity or other securities convertible into or exchangeable
for Common Equity, including without limitation any exchangeable debt
securities, regardless of whether any of the foregoing are actually exercisable
at such time; provided, however, the number of shares of Common Equity
outstanding at any given time shall not include shares, directly or indirectly,
owned or held by or for the account of the Company.

    (c)  For purposes of determining the adjusted Exercise Price under Section
10(b) above, the following shall be applicable:

         (1)  CONSIDERATION.  If any Common Equity, Options or Convertible
    Securities are issued or sold or deemed to have been issued or sold for
    cash, the consideration received therefor shall be deemed to be (i) in the
    case of any public offering of such securities for cash, the gross proceeds
    of such offering (without deduction for any underwriters discount) and (ii)
    in the case of any other issuance, sale or deemed issuance or sale for
    cash, the gross amount received by the Company therefor.  In case any
    Common Equity, Options or Convertible Securities are issued or sold for a
    consideration other than cash, the amount of the consideration other than
    cash received by the Company shall be the fair market value of such
    consideration.  In case any Common Equity, Options or Convertible
    Securities are issued to the owners of the non-surviving entity in
    connection with any merger in which the Company is the surviving
    corporation, the amount of consideration therefor shall be deemed to be the
    fair market value of such portion of the net assets and business of the
    non-surviving entity as is attributable to such Common Equity, Options or
    Convertible Securities, as the case may be.  The fair market value of any
    consideration other than cash shall be determined jointly by the Company
    and a majority in interest of the Warrant Holders.  If such parties are
    unable to reach agreement within a reasonable period of time, such fair
    market value shall be determined by an appraiser reasonably selected by the
    Company and reasonably approved by such Warrant Holders.  The determination
    of such appraiser shall be final and binding on the Company and the Warrant
    Holders, and the fees and expenses of such appraiser shall be paid by the
    Company, unless the fair market value determined by such appraiser is less
    than five percent (5%) above the value proposed in writing by the Company
    and rejected by such Warrant Holders prior to the selection of such
    appraiser, in which event the fees and expenses of such appraiser shall be
    for such Warrant Holders' account.

         (2)  OPTIONS AND CONVERTIBLE SECURITIES.  In the case of the granting
    or sale of any Option or Convertible Security (whether or not at the time
    convertible, exercisable or exchangeable):

              (A)  the aggregate maximum number of shares of Common Equity
              deliverable, directly or indirectly, upon exercise of any Option
              shall be deemed to have been issued at the time such Option was
              granted and for a consideration equal to the consideration
              (determined in the manner provided in subsection (1) above), if
              any, received by the Company upon the issuance of such Option
              plus the


                                          7
<PAGE>

              minimum purchase price provided in such Option for the Common
              Equity covered thereby;

              (B)  the aggregate maximum number of shares of Common Equity
              deliverable upon conversion of or in exchange for any such
              Convertible Security, or upon the exercise of any Option to
              purchase or acquire any Convertible Security and the subsequent
              conversion or exchange thereof, shall be deemed to have been
              issued at the time such Convertible Security was issued or such
              Option was issued and for a consideration equal to the
              consideration, if any, received by the Company for any such
              Convertible Security and any related Option (excluding any cash
              received on account of accrued interest or accrued dividends),
              plus the additional consideration (determined in the manner
              provided in subsection (1) above), if any, to be received by the
              Company upon the conversion or exchange of such Convertible
              Security, or upon the exercise of any related Option to purchase
              or acquire any Convertible Security and the subsequent conversion
              or exchange thereof;

              (C)  on any change in the number of shares of Common Equity
              deliverable, directly or indirectly, upon conversion, exercise or
              exchange of any such Option or Convertible Security or any change
              in the consideration to be received by the Company upon such
              exercise, conversion or exchange, including, but not limited to,
              a change resulting from the anti-dilution provisions thereof, the
              Exercise Price as then in effect shall forthwith be readjusted to
              such Exercise Price as would have been obtained had an adjustment
              been made upon the issuance of such Option or Convertible
              Security upon the basis of such change; and

              (D)  if the Exercise Price shall have been adjusted upon the
              issuance of any such Option or Convertible Security, no further
              adjustment of the Exercise Price shall be made for the actual
              issuance of Common Equity upon any exercise, conversion, or
              exchange thereof;

    provided, however, that none of the events set forth in Section 10(c)(2)(A)
    through 10(c)(2)(D), inclusive, shall result in any increase in the
    Exercise Price.

         (3)  INTEGRATED TRANSACTION.  In case any Option is issued in
    connection with the issue or sale of other securities of the Company,
    together comprising one integrated transaction in which no specific
    consideration is allocated to such Options by the parties thereto, the
    Options shall be deemed to have been issued without consideration.

         (4)  TREASURY SHARES.  The number of shares of Common Equity
    outstanding at any given time does not include shares owned or held by or
    for the account of the Company, and the disposition of any shares so owned
    or held shall be considered an issuance or sale of Common Equity.

         (5)  RECORD DATE.  If the Company takes a record of the holders of
    Common Equity for the purpose of entitling them (A) to receive a dividend
    or other distribution payable in Common Equity, Options or in Convertible
    Securities or (B) to subscribe for or purchase Common Equity, Options or
    Convertible Securities, then such record date shall be deemed to be the
    date of the issuance or sale of the shares of Common Equity deemed to have
    been issued or sold upon the


                                          8
<PAGE>

    declaration of such dividend or the making of such other distribution or
    the date of the granting of such right of subscription or purchase, as the
    case may be.

    (d)  If the Company at any time subdivides (by any stock split, stock
dividend, recapitalization or otherwise) one or more classes of its outstanding
shares of Common Equity into a greater number of shares, the Exercise Price in
effect immediately prior to such subdivision shall be proportionately reduced
and the number of shares of Common Stock obtainable upon exercise of the Warrant
shall be proportionately increased.  If the Company at any time combines (by
reverse stock split or otherwise) one or more classes of its outstanding shares
of Common Stock into a smaller number of shares, the Exercise Price in effect
immediately prior to such combination shall be proportionately increased and the
number of shares of Common Stock obtainable upon exercise of this Warrant shall
be proportionately decreased.

    (e)  Any recapitalization, reorganization, reclassification, consolidation,
merger, sale of all or substantially all of the Company's assets or other
transaction, in each case which is effected in such a way that the holders of
Common Equity are entitled to receive (either directly or upon subsequent
liquidation) stock, securities or assets with respect to or in exchange for
Common Equity is referred to herein as a "Corporate Change."  Prior to the
consummation of any Corporate Change, the Company shall make appropriate
provision (in form and substance satisfactory to the Warrant Holder) to insure
that the Warrant Holder shall thereafter have the right to acquire and receive,
in lieu of or in addition to (as the case may be) the Warrant Shares acquirable
and receivable upon the exercise of such holder's Warrants, such shares of
stock, securities or assets as may be issued or payable with respect to or in
exchange for the number of Warrant Shares acquirable and receivable upon
exercise of such holder's Warrant had such Corporate Change not taken place.  In
any such case, the Company shall make appropriate provision (in form and
substance reasonably satisfactory to the Warrant Holder) with respect to such
holder's rights and interests to insure that the provisions of this Agreement
shall thereafter be applicable to the Warrants (including, in the case of any
such consolidation, merger or sale in which the successor entity or purchasing
entity is other than the Company, any adjustment of the Exercise Price based on
Section 10 hereof).  The Company shall not effect any such consolidation, merger
or sale, unless prior to the consummation thereof, the successor entity (if
other than the Company) resulting from consolidation or merger or the entity
purchasing such assets assumes by written instrument (in form and substance
reasonably satisfactory to the Warrant Holder), the obligation to deliver to the
Warrant Holder such shares of stock, securities or assets as, in accordance with
the foregoing provisions, such holder may be entitled to acquire.

    (f)  If any event occurs of the type contemplated by the provisions of this
Section 10 but not expressly provided for by such provisions (including, without
limitation, the granting of stock appreciation rights, phantom stock rights or
other rights with equity features), then the Company's Board shall make an
appropriate adjustment in the Exercise Price and the number of shares of Common
Stock obtainable upon exercise of this Warrant so as to protect the rights of
the Warrant Holder; provided that no such adjustment shall increase the Exercise
Price or decrease the number of shares of Common Stock obtainable as otherwise
determined pursuant to this Section 10.

    (g)  If the Company declares or pays a dividend upon the Common Equity
payable otherwise than in cash out of earnings or earned surplus (determined in
accordance with generally accepted accounting principles, consistently applied)
except for a stock dividend payable in shares of Common Stock (a "Liquidating
Dividend"), then the Company shall pay to the Warrant Holder at the time of
payment thereof the Liquidating Dividend which would have been paid to such
Warrant Holder on the Common Stock had the Warrants been fully exercised
immediately prior to the date on which a record is taken for such Liquidating
Dividend, or, if no record is taken, the date as of which the record holders of
Common Equity entitled to such dividends are to be determined.


                                          9
<PAGE>

    SECTION 11.  FRACTIONAL INTERESTS.

    The Company shall not be required to issue fractional Warrant Shares upon
the exercise of Warrants.  If more than one Warrant shall be presented for
exercise in full at the same time by the Warrant Holder, the number of full
Warrant Shares which shall be issuable upon the exercise thereof shall be
computed on the basis of the aggregate number of Warrant Shares purchasable on
exercise of the Warrants so presented.  If any fraction of a Warrant Share
would, except for the provisions of this Section 11, be issuable on the exercise
of any Warrants (or specified portion thereof), the Company shall pay an amount
in cash equal to the "fair market value" (determined as provided in Section 5(a)
above) of the Common Stock on the day immediately preceding the date the Warrant
is presented for exercise, multiplied by such fraction.

    SECTION 12.  FINANCIAL STATEMENTS.

    (a)  Whether or not required by the rules and regulations of the Securities
and Exchange Commission (the "Commission"), so long as any of the Warrants
remain outstanding, the Company shall furnish to the Warrant Holders (i) all
quarterly and annual financial information that would be required to be
contained in a filing with the Commission on Forms 10-Q and 10-K if the Company
were required to file such Forms, including "Management's Discussion and
Analysis of Financial Condition and Results of Operations" and, with respect to
the annual information only, a report thereon by the Company's certified
independent accountants and (ii) all current reports that would be required to
be filed with the Commission on Form 8-K if the Company were required to file
such reports. In addition, whether or not required by the rules and regulations
of the Commission, the Company shall file a copy of all such information and
reports with the Commission for public availability (unless the Commission will
not accept such a filing).

    (b)  The Company shall, so long as any of the Warrants are outstanding,
deliver to the Warrant Holders, forthwith upon any Executive Officer of the
Corporation becoming aware of any default under this Agreement, an Officers'
Certificate specifying such default and what action the Company is taking or
proposes to take with respect thereto.

    SECTION 13.  NOTICES TO WARRANT HOLDERS.

    (a)  Upon any adjustment of the Exercise Price or exercise privileges
pursuant to Section 10, the Company shall promptly thereafter (i) cause to be
filed with the Company a certificate of a firm of independent public accountants
of recognized standing, selected by the Board (who may be the regular auditors
of the Company) and acceptable to the Warrant Holders, setting forth the
Exercise Price after such adjustment and setting forth in reasonable detail the
method of calculation and the facts upon which such calculations are based and
setting forth the number of Warrant Shares (or portion thereof) issuable after
such adjustment in the Exercise Price, which certificate shall be conclusive
evidence of the correctness of the matters set forth therein, upon exercise of a
Warrant and payment of the adjusted Exercise Price, and (ii) cause to be given
to each of the registered holders of the Warrant Certificate(s), at his or her
address appearing on the Warrant register, written notice of such adjustments by
first-class mail, postage prepaid.  Where appropriate, such notice may be given
in advance and included as a part of the notice required to be mailed under the
other provisions of this Section 13.

    (b)  In case:


                                          10
<PAGE>

         (1)  the Company shall authorize the issuance to all holders of shares
    of Common Stock of the Company rights to subscribe for, or to purchase
    shares of, Common Stock or of any other subscription rights or warrants; or

         (2)  the Company shall authorize the distribution to all holders of
    shares of Common Stock of evidences of its indebtedness or assets; or

         (3)  of any consolidation or merger to which the Company is a party
    and for which approval of any shareholders of the Company is required, or
    of the conveyance or transfer of the properties and assets of the Company
    substantially as an entirety, or of any reclassification or change of
    Common Stock issuable upon exercise of the Warrants, or a tender offer or
    exchange offer for shares of Common Stock; or

         (4)  of the voluntary or involuntary dissolution, liquidation or
    winding up of the Company or a Liquidating Dividend; or

         (5)  the Company proposes to take any action which would require an
    adjustment of the Exercise Price or the Warrant Shares pursuant to Section
    10;

then the Company shall cause to be given to each of the registered holders of
the Warrant Certificates at his or her address appearing on the Warrant
register, at least twenty (20) days prior to the applicable record date
hereinafter specified, or promptly in the case of events for which there is no
record date, by first-class mail, postage prepaid, a written notice stating (i)
the date as of which the holders of record of shares of Common Stock to be
entitled to receive any such rights or distribution are to be determined, or
(ii) the initial expiration date set forth in any tender offer or exchange offer
for shares of Common Stock, or (iii) the date on which any such consolidation,
merger, conveyance, transfer, dissolution, liquidation or winding up is expected
to become effective or consummated, and the date as of which it is expected that
holders of record of shares of Common Stock shall be entitled to exchange such
shares for securities or other property, if any, deliverable upon such
reclassification, consolidation, merger, conveyance, transfer, dissolution,
liquidation or winding up.  The failure to give the notice required by this
Section 13 or any defect therein shall not affect the legality or validity of
any distribution, right, option, warrant, consolidation, merger, conveyance,
transfer, dissolution, liquidation or winding up, or the vote upon any action.

    (c)  Nothing contained in this Agreement or in the Warrant Certificate
shall be construed as conferring upon the holders thereof the right to vote or
to consent or to receive notice as shareholders in respect of the meetings of
shareholders or the election of Directors of the Company or any other matter, or
any rights whatsoever as shareholders of the Company.

    SECTION 14.  NOTICES TO THE COMPANY AND THE WARRANT HOLDERS.

    (a)  Unless otherwise provided herein, any notice, request, instruction or
other document to be given hereunder by any party to the other shall be in
writing and delivered by hand-delivery, registered first-class mail, return
receipt requested, facsimile or air courier guaranteeing overnight delivery, as
follows:

    If to the Company:       InSight Health Services Corp.
                             4400 MacArthur Boulevard, Suite 800
                             Newport Beach, CA  92660


                                          11
<PAGE>

                             Facsimile:  714.851.4488
                             Attn:  Chief Financial Officer

    With a copy to:          McDermott, Will & Emery
                             2049 Century Park East, 34th Floor
                             Los Angeles, CA  90067
                             Facsimile:  310.277.4730
                             Attn:  Mark J. Mihanovic, Esq.

                                       and

                             Arent, Fox, Kintner, Plotkin & Kahn
                             1050 Connecticut Avenue, N.W., Suite 600
                             Washington, D.C.  20036
                             Facsimile:  202.857.6395
                             Attn:  Gerald P. McCartin, Esq.

    If to the Purchaser:     c/o The Carlyle Group
                             1001 Pennsylvania Avenue, N W
                             Suite 2205
                             Washington, D.C.  20004
                             Facsimile:   202.347.9250
                             Attn:  David W. Dupree

    With a copy to:          Gibson, Dunn & Crutcher LLP
                             1050 Connecticut Avenue, N.W.
                             Washington, D.C.  20036
                             Facsimile:  202.467.0539
                             Attn:  John F. Olson, Esq.


or to such other place and with such other copies as either party may designate
as to itself by written notice to the other.  All such notices, requests,
instructions or other documents shall be deemed to have been duly given at the
time delivered by hand, if personally delivered, four (4) business days after
being deposited in the mail, postage prepaid, if mailed, when receipt is
acknowledged by addressee, if by facsimile, or on the next business day, if
timely delivered to an air courier guaranteeing overnight delivery.

    SECTION 15.  SUPPLEMENTS AND AMENDMENTS.

    The Company may from time to time supplement or amend this Agreement with
the express written approval of the holder(s) of the Warrant Certificate(s) in
order to cure any ambiguity or to correct or supplement any provision contained
herein which may be defective or inconsistent with any other provision herein,
or to make any other provisions in regard to matters or questions arising
hereunder which the Company may deem necessary or desirable and which shall not
in any way adversely affect the interests of the holder(s) of Warrant
Certificate(s).

    SECTION 16.  SUCCESSORS.

    All the covenants and provisions of this Agreement by or for the benefit of
the Company shall bind and inure to the benefit of its respective successors and
assigns hereunder.  All the covenants and


                                          12
<PAGE>

provisions by or for the benefit of the Warrant Holders shall bind and inure to
the benefit of their respective successors and assigns hereunder.

    SECTION 17.  TERMINATION.

    This Agreement shall terminate at 5:00 p.m., Eastern Standard Time on the
fifth anniversary of the Effective Date. Notwithstanding the foregoing, this
Agreement will terminate on any earlier date if all Warrants have been
exercised.

    SECTION 18.  GOVERNING LAW.

    This Agreement and each Warrant Certificate issued hereunder shall be
deemed to be a contract made under the laws of the State of New York and for all
purposes shall be construed in accordance with the internal laws of said State.

    SECTION 19.  BENEFITS OF THIS AGREEMENT.

    Nothing in this Agreement shall be construed to give to any person or
corporation other than the Company and the registered holder(s) of the Warrant
Certificate(s) any legal or equitable right, remedy or claim under this
Agreement; but this Agreement shall be for the sole and exclusive benefit of the
Company and the registered holder(s) of the Warrant Certificate(s).

    SECTION 20.  HSR ACT.

    The Company shall cooperate with any Warrant Holder, promptly after receipt
of notice from any such Warrant Holder of its intention to exercise any
Warrants, in making all filings required to be made under the Hart-Scott-Rodino
Antitrust Improvements Act of 1976, as amended (the "HSR Act") in connection
with such exercise; provided, however, that in no event shall such cooperation
include payment of any fee which may be required to be paid.  The applicable
waiting period, including any extension thereof, under the HSR Act shall have
expired or been terminated prior to the issuance of any Warrant Shares upon
exercise of Warrants.

    SECTION 21.  COUNTERPARTS.

    This Agreement may be executed in any number of counterparts and each of
such counterparts shall for all purposes be deemed to be an original, and all
such counterparts shall together constitute but one and the same instrument.


                                          13
<PAGE>


    IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed, as of the day and year first above written

                                  INSIGHT HEALTH SERVICES CORP.,
                                  a Delaware corporation


                                       By:
                                             ----------------------------------
                                       Name:
                                             ----------------------------------
                                       Title:
                                             ----------------------------------


                                  CARLYLE PARTNERS II, L.P.,
                                  a Delaware limited partnership

                                  By:  TC Group, L.L.C., its General Partner


                                       By:
                                             ----------------------------------
                                       Name:
                                             ----------------------------------
                                       Title:
                                             ----------------------------------


                                  CARLYLE PARTNERS III, L.P.,
                                  a Delaware limited partnership

                                  By:  TC Group, L.L.C., its General Partner


                                       By:
                                             ----------------------------------
                                       Name:
                                             ----------------------------------
                                       Title:
                                             ----------------------------------


                                  CARLYLE INTERNATIONAL PARTNERS II, L.P.,
                                  a Cayman Islands exempted limited partnership

                                  By:  TC Group, L.L.C., its General Partner


                                       By:
                                             ----------------------------------
                                       Name:
                                             ----------------------------------
                                       Title:
                                             ----------------------------------


                                          1
<PAGE>

                                  CARLYLE INTERNATIONAL PARTNERS III, L.P.,
                                  a Cayman Islands exempted limited partnership

                                  By:  TC Group, L.L.C., its General Partner


                                       By:
                                             ----------------------------------
                                       Name:
                                             ----------------------------------
                                       Title:
                                             ----------------------------------


                                  C/S INTERNATIONAL PARTNERS,
                                  a Cayman Islands general partnership

                                  By:  TC Group, L.L.C., its General Partner


                                       By:
                                             ----------------------------------
                                       Name:
                                             ----------------------------------
                                       Title:
                                             ----------------------------------


                                  STATE BOARD OF ADMINISTRATION OF
                                  FLORIDA,
                                  a separate account maintained pursuant to an
                                  Investment Management Agreement dated as of
                                  September 6, 1996 between the State Board of
                                  Administration of Florida, Carlyle Investment
                                  Group, L.P. and Carlyle Investment
                                  Management, L.L.C.

                                  By:  Carlyle Investment Management, L.L.C.,
                                       as Investment Manager

                                       By:
                                             ----------------------------------
                                       Name:
                                             ----------------------------------
                                       Title:
                                             ----------------------------------


                                  CARLYLE INVESTMENT GROUP, L.P.,
                                  a Delaware limited partnership

                                  By:  TC Group, L.L.C., its General Partner


                                       By:
                                             ----------------------------------
                                       Name:
                                             ----------------------------------
                                       Title:
                                             ----------------------------------


                                          2
<PAGE>


                                  CARLYLE-INSIGHT INTERNATIONAL
                                  PARTNERS, L.P.,
                                  a Cayman Islands exempted limited partnership

                                  By:  TC Group, L.L.C., its General Partner


                                       By:
                                             ----------------------------------
                                       Name:
                                             ----------------------------------
                                       Title:
                                             ----------------------------------


                                  CARLYLE-INSIGHT PARTNERS, L.P.,
                                  a Delaware limited partnership

                                  By:  TC Group, L.L.C., its General Partner


                                       By:
                                             ----------------------------------
                                       Name:
                                             ----------------------------------
                                       Title:
                                             ----------------------------------


                                          3
<PAGE>


                                                                       EXHIBIT A


                            [FORM OF WARRANT CERTIFICATE]

                                        [FACE]

"THE SECURITIES EVIDENCED OR CONSTITUTED HEREBY HAVE BEEN ACQUIRED FOR
INVESTMENT AND HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED. SUCH SECURITIES MAY NOT BE SOLD, TRANSFERRED,  PLEDGED, HYPOTHECATED OR
OTHERWISE DISPOSED OF IN THE ABSENCE OF REGISTRATION UNDER SAID ACT AND THE
RULES AND REGULATIONS THEREUNDER AND OF ALL APPLICABLE STATE SECURITIES OR "BLUE
SKY" LAWS OR AN EXEMPTION THEREFROM UNDER SAID ACT AND ALL APPLICABLE STATE
SECURITIES OR "BLUE SKY" LAWS.  IN THE CASE OF A SALE OF THE SECURITIES
EVIDENCED OR CONSTITUTED HEREBY, OTHER THAN A SALE PURSUANT TO A VALID
REGISTRATION STATEMENT UNDER SAID ACT OR A SALE PURSUANT TO RULE 144 PROMULGATED
UNDER SAID ACT, THE HOLDER OF THE SECURITIES EVIDENCED OR CONSTITUTED HEREBY
SHALL PROVIDE TO THE CORPORATION THE WRITTEN OPINION OF REPUTABLE LEGAL COUNSEL
IN FORM REASONABLY ACCEPTABLE TO THE CORPORATION THAT SUCH SALE OR TRANSFER IS
BEING MADE IN COMPLIANCE WITH APPLICABLE FEDERAL SECURITIES LAWS."

                      EXERCISABLE ON OR BEFORE OCTOBER 14, 2002

No. _____                                                  _____ Warrants

                                 WARRANT CERTIFICATE

                            INSIGHT HEALTH SERVICES CORP.

    This Warrant Certificate certifies that ______________ or registered
assigns, is the registered holder of ______ warrants (the "Warrants") expiring
October 14, 2002 (the "Expiration Date") to purchase Common Stock, $.001 par
value (the "Common Stock"), of InSight Health Services Corp., a Delaware
corporation (the "Company").  Each Warrant entitles the holder upon exercise to
receive from the Company on or before 5:00 p.m., Washington, D.C. time, on the
Expiration Date, one fully paid and non-assessable share of Common Stock (a
"Warrant Share") at the initial exercise price of $10.00 per Warrant Share,
subject to adjustment (as adjusted, the exercise price is the "Exercise Price")
upon the occurrence of certain events set forth in the Warrant Agreement, upon
surrender of this Warrant Certificate and payment of the Exercise Price, or as
otherwise provided in the Warrant Agreement, at the office of the Company
designated for such purpose, but only subject to the conditions set forth herein
and in the Warrant Agreement dated as of October 14, 1997 (the "Warrant
Agreement").  The number and kind of Warrant Shares issuable upon exercise of
the Warrants are subject to adjustment upon the occurrence of certain events set
forth in the Warrant Agreement.

    No Warrant may be exercised after 5:00 p.m., Washington, D.C. time, on the
Expiration Date, and to the extent not exercised by such time such Warrants
shall become void.

    Reference is hereby made to the further provisions of this Warrant
Certificate set forth on the reverse hereof and such further provisions shall
for all purposes have the same effect as though fully set forth at this place.



                                          i
<PAGE>

    This Warrant Certificate shall not be valid unless countersigned by the
Company, as such term is used in the Warrant Agreement.

    IN WITNESS WHEREOF, the Company has caused this Warrant Certificate to be
signed by its President and by its Secretary and has caused its corporate seal
to be affixed hereunto or imprinted hereon.

Date:
      -------------------

                             INSIGHT HEALTH SERVICES CORP.



                             By:
                                ----------------------------------------
                                  President



                             By:
                                ----------------------------------------
                                  Secretary


                                          ii
<PAGE>


                            [FORM OF WARRANT CERTIFICATE]

                                      [REVERSE]

    The Warrants evidenced by this Warrant Certificate are part of a duly
authorized issue of Warrants expiring on the Expiration Date, entitling the
holder on exercise to receive shares of Common Stock, $.001 par value, of the
Company (the "Common Stock"), and are issued or to be issued pursuant to the
Warrant Agreement, duly executed and delivered by the Company, which Warrant
Agreement is hereby incorporated by reference in and made a part of this
instrument and is hereby referred to for a description of the rights, limitation
of rights, obligations, duties and immunities thereunder of the Company and the
holders (the words "holders" or "holder" meaning the registered holders or
registered holder) of the Warrants (the "Warrant Holders"). A copy of the
Warrant Agreement may be obtained by the holder hereof upon written request to
the Company.

    Warrants may be exercised at any time on or before the Expiration Date. The
holder of Warrants evidenced by this Warrant Certificate may exercise them by
surrendering this Warrant Certificate, with the form of election to purchase set
forth herein properly completed and executed, together with payment of the
Exercise Price in cash at the office of the Company designated for such purpose.
In the alternative, each Warrant Holder may exercise its right, during the
Exercise Period, as defined in the Warrant Agreement, to receive Warrant Shares
on a net basis, such that, without the exchange of any funds, the Warrant Holder
receives that number of Warrant Shares otherwise issuable (or payable) upon
exercise of its Warrants less that number of Warrant Shares having an aggregate
fair market value (as defined below) at the time of exercise equal to the
aggregate Exercise Price that would otherwise have been paid by the Warrant
Holder of the Warrant Shares.  For purposes of the foregoing sentence, "fair
market value" of the Warrant Shares will be determined in the manner set forth
in the Warrant Agreement.  In the event that upon any exercise of Warrants
evidenced hereby the number of Warrants exercised shall be less than the total
number of Warrants evidenced hereby, there shall be issued to the holder hereof
or his assignee a new Warrant Certificate evidencing the number of Warrants not
exercised. Except as provided in Section 10 of the Warrant Agreement, no
adjustment shall be made for any dividends on any Common Stock issuable upon
exercise of this Warrant.

    The Warrant Agreement provides that, upon the occurrence of certain events,
the Exercise Price and the number of Warrant Shares set forth on the face hereof
may, subject to certain conditions, be adjusted. No fractions of a share of
Common Stock will be issued upon the exercise of any Warrant, but the Company
will pay the cash value thereof determined as provided in the Warrant Agreement.

    The holders of the Warrants are entitled to certain registration rights
with respect to the Common Stock purchasable upon exercise thereof.  Said
registration rights are set forth in full in a Registration Rights Agreement
dated as of October 14, 1997, between the Company and the Warrant Holder.  A
copy of the Registration Rights may be obtained by the holder hereof upon
written request to the Company.

    Warrant Certificates, when surrendered at the office of the Company by the
registered holder thereof in person or by legal representative or attorney duly
authorized in writing, may be exchanged, in the manner and subject to the
limitations provided in the Warrant Agreement, but without payment of any
service charge, for another Warrant Certificate or Warrant Certificates of like
tenor evidencing in the aggregate a like number of Warrants.


                                         iii
<PAGE>


    Upon due presentation for registration of transfer of this Warrant
Certificate at the office of the Company, a new Warrant Certificate or Warrant
Certificates of like tenor and evidencing in the aggregate a like number of
Warrants shall be issued to the transferee(s) in exchange for this Warrant
Certificate, subject to the limitations provided in the Warrant Agreement,
without charge except for any tax or other governmental charge imposed in
connection therewith.

    The Company may deem and treat the registered holder(s) thereof as the
absolute owner(s) of this Warrant Certificate (notwithstanding any notation of
ownership or other writing hereon made by anyone), for the purpose of any
exercise hereof, of any distribution to the holder(s) hereof, and for all other
purposes, and the Company shall not be affected by any notice to the contrary.
Neither the Warrants nor this Warrant Certificate entitles any holder hereof to
any rights of a stockholder of the Company.


                                          iv
<PAGE>


                            [FORM OF ELECTION TO PURCHASE]

                      (TO BE EXECUTED UPON EXERCISE OF WARRANT)

    The undersigned hereby irrevocably elects to exercise the right,
represented by this Warrant Certificate, to receive ___________ shares of Common
Stock and herewith tenders payment for such shares to the order of InSight
Health Services Corp. in the amount of $_______ or by delivery of ____ Warrants
or in accordance with the terms hereof.  The undersigned requests that a
certificate for such shares be registered in the name of ___________________
whose address is __________________________________ and that such shares be
delivered to _________________ whose address is
__________________________________. If said number of shares is less than all of
the shares of Common Stock purchasable hereunder after giving effect to any
delivery of Warrants in payment of the Exercise Price, the undersigned requests
that a new Warrant Certificate representing the remaining balance of such shares
be registered in the name of _______________, whose address is
________________________, and that such Warrant Certificate be delivered to
_________________ whose address is _____________________.


                             Signature:
                                        ----------------------
Date:
     -----------------


                                          v


<PAGE>

                                                                     EXHIBIT 4

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------




                            REGISTRATION RIGHTS AGREEMENT

                                       BETWEEN

                            INSIGHT HEALTH SERVICES CORP.

                                         AND

                           CERTAIN INVESTORS DEFINED HEREIN







                             Dated As Of October 14, 1997


- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

<PAGE>


                            REGISTRATION RIGHTS AGREEMENT

               THIS REGISTRATION RIGHTS AGREEMENT (the "Agreement") is made and
entered into as of October __, 1997,  between InSight Health Services Corp., a
Delaware corporation (the "Company"), and Carlyle Partners II, L.P., a Delaware
limited partnership ("CP II"), Carlyle Partners III, L.P., a Delaware limited
partnership ("CP III"), Carlyle International Partners II, L.P., a Cayman
Islands exempted limited partnership ("CIP II"), Carlyle International Partners
III, L.P., a Cayman Islands exempted limited partnership ("CIP III"), C/S
International Partners, a Cayman Islands general partnership ("C/S"), the State
Board of Administration of Florida ("SBAF"), Carlyle Investment Group, L.P., a
Delaware limited partnership("CIG"), Carlyle-Insight International Partners,
L.P., a Cayman Islands exempted limited partnership ("C-IIP"), and Carlyle-
Insight Partners, L.P., a Delaware limited partnership ("C-IP") (CP II, CP
III, CIP II, CIP III, C/S, SBAF, CIG, C-IIP and C-IP, collectively, the
"Investors" and, individually, an "Investor").  In order to induce the
Investors to enter into the Purchase Agreement, the Company has agreed to
provide the registration rights set forth in this Agreement.  The execution of
this Agreement is a condition to the closing under the Purchase Agreement.

               The parties hereby agree as follows:

Section 1.     DEFINITIONS

               Capitalized terms not otherwise defined herein shall have the
respective meanings given them in the Purchase Agreement.  As used in this
Agreement, the following capitalized terms shall have the following meanings:

               "Board of Directors" shall mean the Board of Directors of the 
Company.

               "Claim" shall mean any loss, claim, damages, liability or 
expense (including the reasonable costs of investigation and reasonable legal 
fees and expenses).

                "Common Stock" shall mean the Common Stock, par value $.001 per
share, of the Company.

               "Demand Registration" shall mean a registration pursuant to 
Section 2 hereof.

               "Equity Security" shall mean any capital stock of the Company 
or any security convertible, with or without consideration, into any such 
stock, or any security carrying any warrant or right to subscribe for or 
purchase any such stock, or any such warrant or right.

               "Exchange Act" shall mean the Securities Exchange Act of 1934, 
as from time to time amended.

               "Firm Commitment Underwritten Offering" shall mean an offering in
which the underwriters agree to purchase securities for distribution pursuant to
a Registration Statement


<PAGE>


under the Securities Act and in which the obligation of the underwriters is to
purchase all the securities being offered if any are purchased.

               "GE" shall mean General Electric Company, a New York 
corporation and its Affiliates.

               "GE Registrable Securities" shall mean (a) the shares of 
Common Stock issued or issuable upon conversion of the Series C Preferred 
Stock or Series D Preferred Stock, whether or not owned by GE; (b) the shares 
of Common Stock issued or issuable upon exercise of any GE Warrants, whether 
or not owned by GE; (c) any securities issued or issuable with respect to 
such Common Stock by way of a stock dividend or stock split or in connection 
with a combination of shares, recapitalization, merger, consolidation or 
reorganization; and (d) any shares of Common Stock or securities issued or 
issuable with respect to such Common Stock as provided in (c) above, acquired 
by GE from the Company subsequent to the date hereof, whether or not owned by 
GE at the time of a Registration; provided that any such share or other 
security shall be deemed to be Registrable Securities only if and so long as 
it is a Transfer Restricted Security.

               "GE Registration Rights Agreement" shall mean a Registration 
Rights Agreement substantially in the form of this Agreement entered into 
between GE and the Company as of the date hereof.

               "GE Warrants" shall mean the warrants to purchase Common 
Stock issued pursuant to a Warrant Agreement dated of even date herewith by 
and between the Company and GE.

               "Holder" shall mean the beneficial owner of a security.  For 
all purposes of this Agreement, the Company shall be entitled to treat the 
record owner of a security as the beneficial owner of such security unless 
the Company has been given written notice of the existence and identity of a 
different beneficial owner.  A Holder of Preferred Stock shall be deemed to 
be the Holder of the Common Stock into which such Preferred Stock could be 
converted.

               "Indemnified Holder" shall mean any Holder of Registrable 
Securities, any officer, director, employee or agent of any such Holder and 
any Person who controls any such Holder within the meaning of either Section 
15 of the Securities Act or Section 20 of the Exchange Act.

               "Misstatement" shall mean an untrue statement of a material 
fact or an omission to state a material fact required to be stated in a 
Registration Statement or Prospectus or necessary to make the statements in a 
Registration Statement, Prospectus or preliminary prospectus not misleading.

               "Person" shall mean a natural person, partnership, corporation,
business trust, association, joint venture or other entity or a government or
agency or political subdivision thereof.

               "Piggyback Registration" shall mean a registration pursuant to 
Section 3 hereof.

                                          2
<PAGE>

               "Preferred Stock" shall mean the Series B Convertible 
Preferred Stock of the Company being issued pursuant to the Purchase 
Agreement and Series D Preferred Stock of the Company issued or issuable upon
conversion of the Series B Convertible Preferred Stock.

               "Prospectus" shall mean the prospectus included in any 
Registration Statement, as supplemented by any and all prospectus supplements
and as amended by any and all post-effective amendments and including all
material incorporated by reference in such prospectus.

               "Purchase Agreement" shall mean that certain Securities Purchase
Agreement dated as of the date hereof between the Company and the Investors.

               "Registrable Securities" shall mean (a) the shares of Common 
Stock issued or issuable upon conversion of the Preferred Stock, whether or 
not owned by the Investors, (b) the shares of Common Stock issued or issuable 
upon exercise of any Warrants, whether or not owned by the Investors, (c) any 
securities issued or issuable with respect to such Common Stock by way of a 
stock dividend or stock split or in connection with a combination of shares, 
recapitalization, merger, consolidation or reorganization; and (d) any shares 
of Common Stock or securities issued or issuable with respect to such Common 
Stock as provided in (c) above, acquired by the Investors from the Company 
subsequent to the date hereof, whether or not owned by the Investors at the 
time of a Registration; provided that any such share or other security shall 
be deemed to be Registrable Securities only if and so long as it is a 
Transfer Restricted Security.

               "Registration" shall mean a Demand Registration or a Piggyback
Registration.

               "Registration Expenses" shall mean the out-of-pocket expenses 
of a Registration, including:

               (1)  all registration and filing fees (including fees with 
                    respect to filings required to be made with the National 
                    Association of Securities Dealers);

               (2)  fees and expenses of compliance with securities or blue 
                    sky laws (including fees and disbursements of counsel for
                    the underwriters or selling holders in connection with blue
                    sky qualifications of the Registrable Securities and
                    determinations of their eligibility for investment under the
                    laws of such jurisdictions as the managing underwriters or
                    holders of a majority of the Registrable Securities being
                    sold may designate);

               (3)  printing, messenger, telephone and delivery expenses;

               (4)  fees and disbursements of counsel for the Company and
                    of not more than one firm of attorneys for the sellers
                    of the Registrable Securities ;

               (5)  expenses of the underwriters and fees and disbursements of
                    counsel for the underwriters, in each case, to the extent
                    required to be paid pursuant to an underwriting agreement
                    relating to a Registration;


                                          3
<PAGE>


               (6)  fees and disbursements of all independent certified public
                    accountants of the Company incurred in connection with such
                    Registration (including the expenses of any special audit
                    and "cold comfort" letters incident to such registration);

               (7)  premiums and other costs of securities acts liability
                    insurance if the Company so desires or if the underwriters
                    so require selling holders of Registrable Securities
                    reasonably so require; and

               (8)  fees and expenses of any other Persons retained by the
                    Company

               "Registration Statement" shall mean any registration statement 
under the Securities Act on an appropriate form (which form shall be 
available for the sale of the Registrable Securities in accordance with the 
intended method or methods of distribution thereof and shall include all 
financial statements required by the SEC to be filed therewith) which covers 
Registrable Securities pursuant to the provisions of this Agreement, 
including the Prospectus included in such registration statement, amendments 
(including post-effective amendments) and supplements to such registration 
statement, and all exhibits to and all material incorporated by reference in 
such registration statement.

               "Securities Act" shall mean the Securities Act of 1933, as 
from time to time amended.

               "SEC" shall mean the Securities and Exchange Commission.

               "Series C Preferred Stock" shall mean the Series C Convertible
Preferred Stock of the Company.

               "Series D Preferred Stock" shall mean the Series D Convertible
Preferred Stock of the Company.

               "Transfer Restricted Security" shall mean a security that has 
not been sold to or through a broker, dealer or underwriter in a public 
distribution or other public securities transaction or sold in a transaction 
exempt from the registration and prospectus delivery requirements of the 
Securities Act under Rule 144 promulgated thereunder (or any successor rule). 
The foregoing notwithstanding, a security shall remain a Transfer Restricted 
Security until all stop transfer instructions or notations and restrictive 
legends with respect to such security have been lifted or removed.

               "Underwriters' Commissions" shall mean discounts of and 
commissions to underwriters, selling brokers, dealer managers or similar 
securities professionals relating to the distribution of the Registrable 
Securities.

               "Underwritten Registration" or "Underwritten Offering" shall 
mean a registration in which securities of the Company are sold to an 
underwriter for distribution to the public.

                                          4
<PAGE>

               "Warrants" shall mean the warrants to purchase Common Stock 
issued pursuant to a Warrant Agreement dated of even date herewith by and 
between the Company and the Investors.

Section 2.     DEMAND REGISTRATIONS

       (a)     TIMING OF DEMAND REGISTRATIONS.

               The Investors (on behalf of themselves and all permitted
assignees who are Holders of Registrable Securities) may request at any time
that the Company file a Registration Statement under the Securities Act on an
appropriate form (which form shall be available for the sale of the Registrable
Securities in accordance with the intended method or methods of distribution
thereof and shall include all financial statements required by the SEC to be
filed herewith) covering the shares of Registrable Securities that are the
subject of such request.

       (b)     NUMBER OF DEMAND REGISTRATIONS; REQUIRED THRESHOLD.

               The Company shall be obligated to prepare, file and cause to
become effective pursuant to this Section 2 no more than two (2) Registration
Statements in the aggregate for the Investors (on behalf of themselves and all
permitted assignees who are Holders of Registrable Securities); provided,
however, that a Registration Statement shall not be counted as one of the two
(2) Demand Registrations hereunder unless it becomes effective and is maintained
effective in accordance with the requirements specified in Section 5(a).  The
Company shall not be obligated to prepare, file and cause to become effective
pursuant to this Section 2 a Registration Statement unless the proposed
aggregate public offering price of the Registrable Securities to be included in
such Demand Registration is at least $5 million.

       (c)      DEFERRAL BY COMPANY.

               Notwithstanding anything in this Section 2 to the contrary, the
Company shall not be obligated to prepare, file and cause to become effective
pursuant to this Section 2 a Registration Statement if the Company furnishes the
Investors a certificate signed by the President of the Company that in the good
faith judgment of the Board of Directors it would be detrimental in any material
respect to the Company and its shareholders for the Company to comply with the
Demand Registration, and it is therefore essential to defer the filing of the
Registration Statement relating thereto.  Any such deferral shall be for a
period of not more than six (6) months after the Company's receipt of the
Investor's written request for registration pursuant to this Section 2;
PROVIDED, HOWEVER, that the Company may not exercise this right more than once
with respect to a Demand Registration and that any requested registration
deferred, and not ultimately effected, by the Company pursuant to the provisions
of this Section 2(c) shall thereafter not be deemed to be a requested
registration for purposes of the limitation to two (2) Demand Registrations
pursuant to Section 2(a) above.

       (d)     PARTICIPATION.

               The Company shall promptly give written notice to all Holders of
Registrable Securities and to GE upon receipt of a request for a Demand
Registration pursuant to Section


                                          5
<PAGE>

2(a) above.  GE may, by written notice to the Company and the Investors, within
thirty (30) business days of the Company's notice, elect to join in a request
for a Demand Registration pursuant to Section 2(a) above, with respect to a
number of shares of GE Registrable Securities that is less than or equal to the
number of shares of Registrable Securities requested to be registered in such
Demand Registration by the Investors.  The GE Registrable Securities being
offered by GE in such Demand Registration shall be treated pari passu with the
Registrable Securities being offered by the Investors for all purposes including
"underwriter's cutbacks" under subsection (e) of this Section and any such
request by GE shall not be treated as either a request for "piggyback" rights
under Section 3 hereof or be treated as the exercise of a demand registration
right by GE under the GE Registration Rights Agreement.  In addition, the
Company shall include in such Demand Registration such shares of Registrable
Securities for which it has received written requests to register such shares
within thirty (30) days after such written notice has been given.

     (e) UNDERWRITER'S CUTBACK.

         If the public offering of Registrable Securities and/or GE
Registrable Securities is to be underwritten and, in the good faith judgment of
the managing underwriter, the inclusion of all the Registrable Securities and/or
GE Registrable Securities requested to be registered hereunder would interfere
with the successful marketing of a smaller number of such shares of Registrable
Securities and/or GE Registrable Securities, the number of shares of Registrable
Securities and/or GE Registrable Securities to be included shall be reduced to
such smaller number with the participation in such offering to be pro rata among
the Holders of Registrable Securities and/or GE Registrable Securities
requesting such registration, based upon the number of shares of Registrable
Securities and/or GE Registrable Securities owned by such Holders.

         Any shares that are thereby excluded from the offering shall be
withheld from the market by the Holders thereof for a period (not to exceed
thirty (30) days prior to the effective date and one hundred twenty (120) days
thereafter) that the managing underwriter reasonably determines is reasonably
necessary in order to successfully market the securities  to be offered in the
Underwritten Offering.

         The Company and, subject to the requirements of Section 11 hereof,
other Holders of securities of the Company may include such securities
in such Registration if, but only if, the managing underwriter concludes that
such inclusion will not interfere with the successful marketing of all the
Registrable Securities requested to be included in such registration.

     (f) MANAGING UNDERWRITER.

         The managing underwriter or underwriters of any Underwritten 
Offering covered by a Demand Registration shall be selected by Investors 
participating in the Underwritten Offering owning a majority of the shares of 
Common Stock to be offered therein, subject to the approval of the Board of 
Directors (by a majority of the Directors not elected by the holders of the 
Preferred Stock and the Series C Preferred Stock), which approval shall not 
be unreasonably withheld.

                                          6
<PAGE>

3.   PIGGYBACK REGISTRATIONS

    (a)  PARTICIPATION.

         Each time the Company decides to file a Registration Statement under
the Securities Act (other than registrations on Forms S-4 or S-8 or any
successor form thereto, and other than a Demand Registration) covering the offer
and sale by it or any of its security holders of any of its securities for
money, the Company shall give written notice thereof to all Holders of
Registrable Securities.  The Company shall include in such Registration
Statement such shares of Registrable Securities for which it has received
written requests to register such shares within twenty (20) days after such
written notice has been given.  If the Registration Statement is to cover an
Underwritten Offering, such Registrable Securities shall be included in the
underwriting on the same terms and conditions as the securities otherwise being
sold through the underwriters.

    (b)  UNDERWRITER'S CUTBACK.

         Subject to the requirements of Section 11 hereof, if in the good faith
judgment of the managing underwriter of such offering the inclusion of all of
the shares of Registrable Securities and any other Common Stock requested to be
registered would interfere with the successful marketing of a smaller number of
such shares, then the number of shares of Registrable Securities and other
Common Stock to be included in the offering shall be reduced to such smaller
number with the participation in such offering to be in the following order of
priority:  (1) first, the shares of Common Stock which the Company proposes to
sell for its own account, (2) second, the shares of Registrable Securities of
all Holders of Registrable Securities requested to be included, PARI PASSU with
all shares of GE Registrable Securities requested by GE to be included and all
shares of any Person granted "piggyback" registration rights by the Company
prior to the date hereof with respect to the Company's securities, as set forth
in Schedule A attached hereto, requested by such Person to be included, and (3)
third, any other shares of Common Stock requested to be included.  Any necessary
allocation among the Holders of shares within each of the foregoing groups shall
be pro rata among such Holders requesting such registration based upon the
number of shares of Common Stock and Registrable Securities owned by such
Holders.

         All shares so excluded from the Underwritten Offering shall be
withheld from the market by the Holders thereof for a period (not to exceed
thirty (30) days prior to the effective date and one hundred twenty (120) days
thereafter) that the managing underwriter reasonably determines is reasonably
necessary in order to successfully market the securities to be offered in the
Underwritten Offering.

    (c)  COMPANY CONTROL.

         The Company may decline to file a Registration Statement after giving
notice to Holders pursuant to Section 3(a) above, or withdraw a Registration
Statement after filing and after such notice, but prior to the effectiveness
thereof; provided that the Company shall promptly notify each Holder of
Registrable Securities in writing of any such action and provided further


                                          7
<PAGE>

that the Company shall bear all expenses incurred by each Holder or otherwise in
connection with such withdrawn Registration Statement.

4.  HOLD-BACK AGREEMENTS

    (a)  BY HOLDERS OF REGISTRABLE SECURITIES

         Upon the written request of the managing underwriter of any
Underwritten Offering of the Company's securities, a Holder of Registrable
Securities shall not sell, make any short sale of, loan, grant any option for
the purchase of, or otherwise dispose of any Registrable Securities (other than
those included in such registration) without the prior written consent of such
managing underwriter for a period (not to exceed thirty (30) days before the
effective date and one hundred twenty (120) days thereafter) that such managing
underwriter reasonably determines is necessary in order to effect the
Underwritten Offering; provided that each of the officers and directors of the
Company shall have entered into substantially similar holdback agreements with
such managing underwriter covering at least the same period.

    (b)  BY THE COMPANY AND OTHERS.

         The Company agrees:

              (1)  not to effect any public or private sale or distribution of
    its Equity Securities during the 30-day period prior to, and during the
    60-day period after, the effective date of each Underwritten Offering made
    pursuant to a Demand Registration or a Piggyback Registration, if so
    requested in writing by the managing underwriter (except as part of such
    Underwritten Offering, pursuant to registrations on Forms S-4 or S-8 or any
    successor forms thereto or private issuances of Equity Securities as
    consideration for any acquisition by the Company or a subsidiary of assets
    or capital stock of any unaffiliated third party), and

              (2)  not to issue any Equity Securities other than for sale in a
    registered public offering unless each of the Persons to which such
    securities are issued has entered a written agreement binding on its
    transferees not to effect any public sale or distribution of such
    securities (except for employee stock options issued to Persons other than:
    directors or officers; or shareholders owning five percent (5%) or more of
    the Company's Equity Securities) during such period, including without
    limitation a sale pursuant to Rule 144 under the Securities Act (except as
    part of such Underwritten Registration, if and to the extent permitted
    hereunder).

5.  REGISTRATION PROCEDURES

         If and whenever the Company is required to register Registrable
Securities in a Demand Registration,, the Company will use all commercially
reasonable efforts to effect such registration to permit the sale of such
Registrable Securities in accordance with the intended plan of distribution
thereof.  With respect to both Demand Registrations and Piggyback Registrations
(except as otherwise specifically provided), the Company will as expeditiously
as practicable:


                                          8
<PAGE>

         (a)  prepare and file with the SEC as soon as practicable a
Registration Statement with respect to such Registrable Securities and use all
commercially reasonable efforts to cause such Registration Statement to become
effective and remain continuously effective until the date that is the earlier
to occur of (i) the date six months from the date such Registration Statement
was declared effective, and (ii) the date the last of the Registrable Securities
covered by such Registration Statement have been sold, provided that before
filing a Registration Statement or Prospectus or any amendments or supplements
thereto, the Company shall furnish to Holders of Registrable Securities covered
by such Registration Statement and the underwriters, if any, draft copies of all
such documents proposed to be filed, which documents will be subject to the
review of such Investor and underwriters, and the Company shall not file any
Registration Statement or amendment thereto or any Prospectus or any supplement
thereto to which the Investor or the underwriters, if any, shall reasonably
object;

         (b)  prepare and file with the SEC such amendments and post-effective
amendments to the Registration Statement, and such supplements to the
Prospectus, as may be requested by any underwriter of Registrable Securities or
as may be required by the rules, regulations or instructions applicable to the
registration form used by the Company or by the Securities Act or rules and
regulations thereunder to keep the Registration Statement effective until all
Registrable Securities covered by such Registration Statement are sold in
accordance with the intended plan of distribution set forth in such Registration
Statement or supplement to the Prospectus;

         (c)  promptly notify the selling Holders of Registrable Securities and
the managing underwriter, if any, and (if requested by any such Person) confirm
such advice in writing,

              (1)  when the Prospectus or any supplement or post-effective
    amendment has been filed, and, with respect to the Registration Statement
    or any post-effective amendment, when the same has become effective,

              (2)  of any request by the SEC for amendments or supplements to
    the Registration Statement or the Prospectus or for additional information,

              (3)  of the issuance by the SEC of any stop order suspending the
    effectiveness of the Registration Statement or the initiation of any
    proceedings for that purpose,

              (4)  if at any time the representations and warranties of the
    Company contemplated by clause (1) of paragraph (o) below cease to be
    accurate in all material respects,

              (5)  of the receipt by the Company of any notification with
    respect to the suspension of the qualification of the Registrable
    Securities for sale in any jurisdiction or the initiation or threatening of
    any proceeding for such purpose, and


                                          9
<PAGE>

              (6)  of the existence of any fact which results in the
    Registration Statement, the Prospectus or any document incorporated therein
    by reference containing a Misstatement;

         (d)  make all commercially reasonable efforts to obtain the withdrawal
of any order suspending the effectiveness of the Registration Statement at the
earliest practicable time;

         (e)  unless the Company objects in writing on reasonable grounds, if
requested by the managing underwriter or Investors holding more than 50% of the
Registrable Securities then outstanding (on behalf of themselves and all
permitted assignees who are Holders of Registrable Securities), as promptly as
practicable incorporate in a supplement or post-effective amendment such
information as the managing underwriter and the Investors agree should be
included therein relating to the sale of the Registrable Securities, including,
without limitation, information with respect to the number of shares of
Registrable Securities being sold to underwriters, the purchase price being paid
therefor by such underwriters and with respect to any other terms of the
Underwritten Offering of the Registrable Securities to be sold in such offering;
and make all required filings of such supplement or post-effective amendment as
soon as notified of the matters to be incorporated in such supplement or
post-effective amendment;

         (f)  only with respect to Demand Registrations, promptly prior to the
filing of any document which is to be incorporated by reference into the
Registration Statement or the Prospectus (after initial filing of the
Registration Statement) provide copies of such document to counsel to the
Investors (on behalf of themselves and all permitted assignees who are Holders
of Registrable Securities) and to the managing underwriter, if any, and make the
Company's representatives available for discussion of such document and make
such changes in such document prior to the filing thereof as counsel for the
Investors or underwriters may reasonably request;

         (g)  furnish to each selling Holder of Registrable Securities and the
managing underwriter, without charge, at least one signed copy of the
Registration Statement and any post-effective amendments thereto, including
financial statements and schedules, all documents incorporated therein by
reference and all exhibits (including those incorporated by reference);

         (h)  deliver to TC Group, L.L.C. or Carlyle Investment Management,
L.L.C., as appropriate (on behalf of each selling Holder of Registrable
Securities) and the underwriters, if any, without charge, as many copies of each
Prospectus (and each preliminary prospectus) as such Persons may reasonably
request (the Company hereby consenting to the use of each such Prospectus (or
preliminary prospectus) by each of the selling Holders of Registrable Securities
and the underwriters, if any, in connection with the offering and sale of the
Registrable Securities covered by such Prospectus (or preliminary prospectus));

         (i)  prior to any public offering of Registrable Securities, use all
commercially reasonable efforts to register or qualify or cooperate with the
selling Holders of Registrable Securities, the underwriters, if any, and their
respective counsel in connection with the registration or qualification of such
Registrable Securities for offer and sale under the securities or blue sky laws
of such jurisdictions as such Investor or underwriters may designate in writing
and do


                                          10
<PAGE>

anything else necessary or advisable to enable from a legal perspective the
disposition in such jurisdictions of the Registrable Securities covered by the
Registration Statement; provided that the Company shall not be required to
qualify generally to do business in any jurisdiction where it is not then so
qualified or to take any action which would subject it to general service of
process in any such jurisdiction where it is not then so subject;

         (j)  cooperate with the selling Holders of Registrable Securities and
the managing underwriter, if any, to facilitate the timely preparation and
delivery of certificates not bearing any restrictive legends representing the
Registrable Securities to be sold and cause such Registrable Securities to be in
such denominations and registered in such names as the managing underwriter may
request at least three business days prior to any sale of Registrable Securities
to the underwriters;

         (k)  use all commercially reasonable efforts to cause the Registrable
Securities covered by the Registration Statement to be registered with or
approved by such other governmental agencies or authorities as may be necessary
to enable the seller or sellers thereof or the underwriters, if any, to
consummate the disposition of such Registrable Securities;

         (l)  if the Registration Statement or the Prospectus contains a
Misstatement, prepare a supplement or post-effective amendment to the
Registration Statement or the related Prospectus or any document incorporated
therein by reference or file any other required document so that, as thereafter
delivered to the purchasers of the Registrable Securities, the Prospectus will
not contain a Misstatement;

         (m)  use all commercially reasonable efforts to cause all Registrable
Securities covered by the Registration Statement to be listed on any national
securities exchange on which the Company's securities are listed or authorized
for quotation on Nasdaq, if requested by the Investors (on behalf of themselves
and all permitted assignees who are Holders of Registrable Securities) or the
managing underwriter, if any; provided, however, that the payment of any
required listing or other fee shall always be deemed to be "commercially
reasonable" for purposes of this Section 5(m);

         (n)  provide a CUSIP number for all Registrable Securities not later
than the effective date of the Registration Statement;

         (o)  enter into such agreements (including an underwriting agreement)
and do anything else reasonably necessary or advisable in order to expedite or
facilitate the disposition of such Registrable Securities, and in such
connection, whether or not the registration is an Underwritten Registration:

              (1)  make such representations and warranties to the Holders of
    such Registrable Securities and the underwriters, if any, in form,
    substance and scope as are customarily made by issuers to holders and
    underwriters, respectively, in similar Underwritten Offerings;


                                          11
<PAGE>

              (2)  obtain opinions of counsel to the Company and updates
    thereof (which counsel and opinions (in form, scope and substance) shall be
    reasonably satisfactory to the managing underwriter, if any, and the
    Investor (on behalf of itself and all permitted assignees who are Holders
    of Registrable Securities)) addressed to each selling Holder and the
    underwriter, if any, covering the matters customarily covered in opinions
    delivered to holders and underwriters, respectively, in similar
    Underwritten Offerings and such other matters as may be reasonably
    requested by such Investor or underwriters;

              (3)  obtain "cold comfort" letters and updates thereof from the
    Company's independent certified public accountants addressed to the selling
    Holders of Registrable Securities and the underwriters, if any, such
    letters to be in customary form and covering matters of the type
    customarily covered in "cold comfort" letters by holders and underwriters,
    respectively, in connection with similar Underwritten Offerings;

              (4)  if an underwriting agreement is entered into, cause the same
    to include customary indemnification and contribution provisions and
    procedures with respect to such underwriters; and

              (5)  deliver such documents and certificates as may be reasonably
    requested by the Investor (on behalf of itself and all permitted assignees
    who are Holders of Registrable Securities) and the managing underwriter, if
    any, to evidence compliance with clause (1) above and with any customary
    conditions contained in the underwriting agreement or other agreement
    entered into by the Company.

The above shall be done at each closing under such underwriting or similar
agreement or as and to the extent otherwise reasonably requested by the Investor
(on behalf of itself and all permitted assignees who are Holders of Registrable
Securities);

         (p)  make available for inspection by representatives of TC Group,
L.L.C. or Carlyle Investment Management, L.L.C., as appropriate (on behalf of
themselves and all permitted assignees who are Holders of Registrable
Securities), any underwriter participating in any disposition pursuant to such
Registration Statement, and any attorney or accountant retained by the sellers
or any such underwriter, all financial and other records and pertinent corporate
documents and properties of the Company, and cause the Company's officers,
directors and employees to supply all information reasonably requested by any
such seller or underwriter in connection with the Registration; provided that
any records, information or documents that are designated by the Company in
writing as confidential shall be kept confidential by such Persons unless
disclosure of such records, information or documents is required by court or
administrative order; and

         (q)  otherwise use all commercially reasonable efforts to comply with
all applicable rules and regulations of the SEC relating to such Registration,
and make generally available to its security holders earnings statements
satisfying the provisions of Section 11(a) of the Securities Act, no later than
forty-five (45) days after the end of any 12-month period (or ninety (90) days,
if such period is a fiscal year) commencing at the end of any fiscal quarter in 


                                          12
<PAGE>


which Registrable Securities are sold to underwriters in an Underwritten
Offering, or, if not sold to underwriters in such an offering, beginning with
the first month of the Company's first fiscal quarter commencing after the
effective date of the Registration Statement, which statements shall cover said
12-month period.

6.  REGISTRATION EXPENSES

    (a)  DEMAND REGISTRATIONS.

         The Company shall bear all Registration Expenses incurred in
connection with any Demand Registrations and of any Registrations which do not
become or are not maintained effective in accordance with the requirements
specified in Section 5(a) other than any Registration terminated prior to
effectiveness at the request of, or primarily as a result of, the actions of
Holders whose Registrable Securities are included in such registration. 
Notwithstanding the foregoing, the Underwriters' Commissions incurred in
connection with a Demand Registration that becomes effective shall be shared by
the Holders of the Registrable Securities whose Registrable Securities are
included in such Registration and the Holders of the GE Registrable Securities
whose GE Registrable Securities are included in such Registration, pro rata, in
accordance with the aggregate amount of Registrable Securities and GE
Registrable Securities sold by such Holders.

    (b)  PIGGYBACK REGISTRATIONS.

         The Company shall bear all Registration Expenses incurred in
connection with any Piggyback Registrations, except that each Holder of the
Registrable Securities whose Registrable Securities are included in such
Registration shall pay its pro rata share of the Underwriters' Commissions
incurred in such Registration, in accordance with the amount of Registrable
Securities sold by all such Holders.

    (c)  COMPANY EXPENSES.

         The Company also will, in any event, pay its internal expenses
(including, without limitation, all salaries and expenses of its officers and
employees performing legal or accounting duties), the expense of any annual
audit, the fees and expenses incurred in connection with any listing of the
securities to be registered on a securities exchange, and the fees and expenses
of any Person, including special experts, retained by the Company.

7.  INDEMNIFICATION

    (a)  INDEMNIFICATION BY COMPANY.

         The Company agrees to indemnify and hold harmless each Indemnified
Holder from and against all Claims arising out of or based upon any Misstatement
or alleged Misstatement, except insofar as such Misstatement or alleged
Misstatement was based upon information furnished in writing to the Company by
such Indemnified Holder expressly for use in the document containing such
Misstatement or alleged Misstatement.  This indemnity shall not be exclusive and
shall be in addition to any liability which the Company may otherwise have.

                                          13
<PAGE>


         The foregoing notwithstanding, the Company shall not be liable to the
extent that any such Claim arises out of or is based upon a Misstatement or
alleged Misstatement made in any preliminary prospectus if (i) such Indemnified
Holder failed to send or deliver a copy of the Prospectus with or prior to the
delivery of written confirmation of the sale of Registrable Securities giving
rise to such Claim and (ii) the Prospectus would have corrected such untrue
statement or omission.

         In addition, the Company shall not be liable to the extent that any
such Claim arises out of or is based upon a Misstatement or alleged Misstatement
in a Prospectus, (x) if such Misstatement or alleged Misstatement is corrected
in an amendment or supplement to such Prospectus and (y) having previously been
furnished by or on behalf of the Company with copies of the Prospectus as so
amended or supplemented, such Indemnified Holder thereafter fails to deliver
such Prospectus as so amended or supplemented prior to or concurrently with the
sale to the person who purchased a Registrable Security from such Indemnified
Holder and who is asserting such Claim.

         The Company shall also provide customary indemnifications to
underwriters, selling brokers, dealer managers and similar securities industry
professionals participating in a distribution covered by a Registration
Statement, their officers and directors and each Person who controls such
Persons (within the meaning of Section 15 of the Securities Act or Section 20 of
the Exchange Act).

    (b)  INDEMNIFICATION PROCEDURES.

         If any action or proceeding (including any governmental investigation
or inquiry) shall be brought or asserted against an Indemnified Holder in
respect of which indemnity may be sought from the Company, such Indemnified
Holder shall promptly notify the Company in writing, and the Company may assume
the defense thereof, including the employment of counsel reasonably satisfactory
to such Indemnified Holder and the payment of all expenses.

         Such Indemnified Holder shall have the right to employ separate
counsel in any such action and to participate in the defense thereof, but the
fees and expenses of such separate counsel shall be at the expense of such
Indemnified Holder unless (i) the Company has agreed to pay such fees and
expenses, (ii) the Company shall have failed to assume the defense of such
action or proceeding or has failed to employ counsel reasonably satisfactory to
such Indemnified Holder in any such action or proceeding, or (iii) the named
parties to any such action or proceeding (including any impleaded parties)
include both such Indemnified Holder and the Company, and such Indemnified
Holder shall have been advised in writing by counsel that there may be one or
more legal defenses available to such Indemnified Holder that are different from
or additional to those available to the Company.

         If such Indemnified Holder notifies the Company in writing that it
elects to employ separate counsel at the expense of the Company as permitted by
the provisions of the preceding paragraph, the Company shall not have the right
to assume the defense of such action or proceeding on behalf of such Indemnified
Holder.  The foregoing notwithstanding, the Company shall not be liable for the
reasonable fee and expenses of more than one separate firm of attorneys


                                          14
<PAGE>

at any time for such Indemnified Holder and any other Indemnified Holders (which
firm shall be designated in writing by such Indemnified Holders) in connection
with any one such action or proceeding or separate but substantially similar or
related actions or proceedings in the same jurisdiction arising out of the same
general allegations or circumstances.

         The Company shall not be liable for any settlement of any such action
or proceeding effected without its written consent, but if settled with its
written consent, or if there be a final judgment for the plaintiff in any such
action or proceeding, the Company agrees to indemnify and hold harmless such
Indemnified Holders from and against any loss or liability by reason of such
settlement or judgment.

    (c)  INDEMNIFICATION BY HOLDER OF REGISTRABLE SECURITIES.

         Each Holder of Registrable Securities agrees to indemnity and hold
harmless the Company, its directors and officers and each Person, if any, who
controls the Company within the meaning of either Section 15 of the Securities
Act or Section 20 of the Exchange Act to the same extent as the foregoing
indemnity from the Company to such Holder, but only with respect to information
relating to such Holder furnished in writing by such Holder expressly for use in
any Registration Statement, Prospectus or preliminary prospectus.  In no event,
however, shall the liability hereunder of any selling Holder of Registrable
Securities be greater than the dollar amount of the proceeds received by such
Holder upon the sale of the Registrable Securities giving rise to such
indemnification obligation.

         In case any action or proceeding shall be brought against the Company
or its directors or officers or any such controlling person, in respect of which
indemnity may be sought against a Holder of Registrable Securities, such Holder
shall have the rights and duties given the Company and the Company or its
directors or officers or such controlling person shall have the rights and
duties given to each Holder by Sections 7(a) and 7(b) above.

         The Company shall be entitled to receive indemnities from
underwriters, selling brokers, dealer managers and similar securities industry
professionals participating in the distribution, to the same extent as provided
above with respect to information so furnished in writing by such Persons
specifically for inclusion in any Prospectus or Registration Statement.

    (d)  CONTRIBUTION.

         If the indemnification provided for in this Section 7 is unavailable
to an indemnified party under Section 7(a) or Section 7(c) above (other than by
reason of exceptions provided in those Sections) in respect of any Claims
referred to in such Sections, then each applicable indemnifying party, in lieu
of indemnifying such indemnified party, shall contribute to the amount paid or
payable by such indemnified party as a result of such Claims in such proportion
as is appropriate to reflect the relative fault of the Company on the one hand
and of the Holder on the other in connection with the statements or omissions
which resulted in such Claims as well as any other relevant equitable
considerations.  The amount paid or payable by a party as a result of the Claims
referred to above shall be deemed to include, subject to the limitations set
forth in Section


                                          15
<PAGE>

7(b), any legal or other fees or expenses reasonably incurred by such party in
connection with investigating or defending any action or claim.

         The relative fault of the Company on the one hand and of the Holder on
the other shall be determined by reference to, among other things, whether the
Misstatement or alleged Misstatement relates to information supplied by the
Company or by the Holder and the parties' relative intent, knowledge, access to
information and opportunity to correct or prevent such Misstatement or alleged
Misstatement.

         The Company and each Holder of Registrable Securities agree that it
would not be just and equitable if contribution pursuant to this Section 7(d)
were determined by pro rata allocation or by any other method of allocation
which does not take account of the equitable considerations referred to above.

         Notwithstanding the provisions of this Section 7(d), an Indemnified
Holder shall not be required to contribute any amount in excess of the amount by
which (i) the total price at which the securities that were sold by such
Indemnified Holder and distributed to the public were offered to the public
exceeds (ii) the amount of any damages which such Indemnified Holder has
otherwise been required to pay by reason of such Misstatement.

         No person guilty of fraudulent misrepresentation (within the meaning
of Section 11(f) of the Securities Act) shall be entitled to contribution from
any person who was not guilty of such fraudulent misrepresentation.

8.  EXCHANGE ACT REPORTING REQUIREMENTS

         From and after the date hereof, the Company shall (whether or not it
shall then be required to do so) timely file such information, documents and
reports as the Commission may require or prescribe under Section 13 or 15(d)
(whichever is applicable) of the Exchange Act.  In addition, the Company shall
use all commercially reasonable efforts to file such other information,
documents and reports, as shall hereafter be required by the Commission as a
condition to the availability of Rule 144 under the Securities Act (or any
successor provision) and the use of Form S-3.

         From and after the date hereof, the Company shall forthwith upon
reasonable request furnish any Holder of Registrable Securities (i) a written
statement by the Company that it has complied with such reporting requirements,
(ii) a copy of the most recent annual or quarterly report of the Company, and
(iii) such other reports and documents filed by the Company with the Commission
as such Holder may reasonably request in availing itself of an exemption for the
sale of Registrable Securities without registration under the Securities Act
pursuant to Rule 144 thereunder.

         The purpose of the foregoing requirements are (a) to enable any such
Holder to comply with the current public information requirements contained in
paragraph (c) of Rule 144 under the Securities Act (or any successor provision)
and (b) to qualify the Company for the use of Registration Statements on Form
S-3.


                                          16
<PAGE>


9.  REQUIREMENTS FOR PARTICIPATION IN UNDERWRITTEN OFFERINGS

         No Person may participate in any Underwritten Offering pursuant to a
Registration hereunder unless such Person (a) agrees to sell such Person's
securities on the basis provided in any underwriting arrangements approved by
the Persons entitled hereunder to approve such arrangements, and (b) completes
and executes all questionnaires, powers of attorney, indemnities, underwriting
agreements and other documents required under the terms of such underwriting
arrangements

10. SUSPENSION OF SALES

         Upon receipt of written notice from the Company that (i) a
Registration Statement or Prospectus contains a Misstatement, or (ii) in the
reasonable determination of the Company, there exists circumstances not yet
disclosed to the public which would be required to be disclosed in such
Registration Statement and the disclosure of which would be materially harmful
to the Company, each Holder of Registrable Securities shall forthwith
discontinue disposition of Registrable Securities until such Holder has received
copies of the supplemented or amended Prospectus required by Section 5(l)
hereof, or until such Holder is advised in writing by the Company that the use
of the Prospectus may be resumed, and, if so directed by the Company, such
Holder shall deliver to the Company (at the Company's expense) all copies, other
than permanent file copies then in such Holder's possession, of the Prospectus
covering such Registrable Securities current at the time of receipt of such
notice.  The Company shall use all commercially reasonable efforts to minimize
the length of such suspension of sales, provided, that the Company may require
the suspension of sales for a period of ninety (90) days in the event that the
disclosure of any circumstances, in the reasonable determination of the Company
would be harmful in any material respect to the Company.  In no event, however,
shall the aggregate period of time that the Company postpones the filing or
declaration of effectiveness of any Registration Statement pursuant to Section
5, or suspends sales of Registrable Securities pursuant to Section 10 under any
Registration Statement, taken together with all such other periods with respect
to such Registrations Statement exceed, in the aggregate, ninety (90) days.

11. FUTURE REGISTRATION RIGHTS AGREEMENTS

         Except for an underwriting agreement between the Company and one or
more professional underwriters of securities, the Company shall not agree to
register any Equity Securities under the Securities Act unless such agreement
specifically provides that:

         (a)  the Holder of such Equity Securities may not participate in any
Demand Registration without the consent of the Investors unless:

              (i)  the offering of the Registrable Securities is to be a Firm
    Commitment Underwritten Offering and the managing underwriter concludes
    that the public offering or sale of such Equity Securities would not
    interfere with the successful marketing of all Registrable Securities
    requested to be sold and


                                          17
<PAGE>

              (ii) the Holders of Registrable Securities shall have the right
    to participate, to the extent they may request, in any Registration
    Statement initiated under a Demand Registration right exercised by
    Investors holding more than 50% of the Registrable Securities then
    outstanding, except that if the managing underwriter of a public offering
    made pursuant to such a Demand Registration limits the number of shares of
    Common Stock to be sold, the participation of the Holders of the
    Registrable Securities and the Holders of all other Common Stock (other
    than the Equity Securities held by such Holder of Equity Securities) shall
    be determined as set forth in Section 3 hereof.

         (b)  the Holder of such Equity Securities may not participate in any
Piggyback Registration if the sale of Registrable Securities is to be
underwritten unless, if the managing underwriter limits the total number of
shares to be sold, the Holders of such Equity Securities and the Holders of
Registrable Securities are entitled to participate in such underwritten
distribution based on the order of priority set forth in Section 3 hereof, and

         (c)  all Equity Securities excluded from any Registration as a result
of the foregoing limitations may not be publicly offered or sold for a period
(not to exceed at least thirty (30) days prior to the effective date and sixty
(60) days thereafter) that the managing underwriter reasonably determines is
necessary in order to effect the underwritten public offering of Registrable
Securities registered pursuant to this Agreement.

12. TRANSFER OF REGISTRATION RIGHTS

         The rights of Holders of Registrable Securities hereunder may be
transferred as permitted in the Purchase Agreement.  The Company shall be given
written notice by the Holder at the time of any such transfer permitted by the
Purchase Agreement stating the name and address of the transferee, including a
writing by such transferee to the effect that such transferee agrees to by bound
by the terms hereof and identifying the securities with respect to which the
rights hereunder are being transferred.

13. MISCELLANEOUS

    (a)  REMEDIES.

         Each Holder of Registrable Securities, in addition to being entitled
to exercise all rights provided herein, in the Purchase Agreement and granted by
law, including recovery of damages, shall be entitled to specific performance of
its rights under this Agreement.  The Company agrees that monetary damages would
not be adequate compensation for any loss incurred by reason of a breach by it
of the provisions of this Agreement and hereby agrees to waive the defense in
any action for specific performance that a remedy at law would be adequate.

    (b)  NO INCONSISTENT AGREEMENTS.

         The Company shall not, on or after the date of this Agreement, enter
into any agreement with respect to its securities that is inconsistent with the
rights granted to the Holders of Registrable Securities in this Agreement or
otherwise conflicts with the provisions hereof.


                                          18
<PAGE>

         Other than as disclosed on Schedule A attached hereto, the Company has
not previously entered into any agreement with respect to its securities
granting any "piggy back" registration rights to any Person.  The Company
represents and warrants to the Investors that, except as set forth in this
Agreement and the GE Registration Rights Agreement, as of the date hereof, there
are no outstanding "demand" registration rights with respect to the Company's
securities.  The rights granted to the Holders of Registrable Securities
hereunder do not in any way conflict with and are not inconsistent with the
rights granted to the holders of the Company's securities under any such
agreements.

    (c)  AMENDMENTS AND WAIVERS.

         The provisions of this Agreement, including the provisions of this
sentence, may not be amended, modified or supplemented, and waivers or consents
to departures from the provisions hereof may not be given unless the Company has
obtained the written consent of General Electric Company, a New York corporation
(but such consent of General Electric Company shall only be necessary if, at the
time such consent is sought, GE owns GE Registrable Securities) and of Investors
holding more than 50% of the Registrable Securities then outstanding (on behalf
of themselves and all permitted assignees who are Holders of Registrable
Securities).  The foregoing notwithstanding, a waiver or consent to departure
from the provisions hereof that relates exclusively to the rights of Holders of
shares of Registrable Securities whose shares are being sold pursuant to a
Registration Statement and that does not directly or indirectly affect the
rights of other Holders of shares of Registrable Securities may be given by the
Holders of a majority of the shares of Registrable Securities being sold.

    (d)  NOTICES.

         All notices and other communications provided for or permitted
hereunder shall be made in writing by hand-delivery, registered first-class
mail, telex, facsimile, or air courier guaranteeing overnight delivery:

              (i)  if to a Holder of Registrable Securities who is an Investor
    or a Carlyle Affiliate ( as such term is defined in the Purchase
    Agreement), at the address of the Purchaser (as such term is defined in the
    Purchase Agreement) set forth in Section 9.4 of the Purchase Agreement,
    with a copy to Gibson, Dunn & Crutcher LLP, 1050 Connecticut Avenue, N.W.,
    Suite 900, Washington, D.C.  20036, Facsimile:  (202) 467-0539, Attention: 
    John F. Olson, Esq.;

              (ii) if to a Holder of Registrable Securities who is not an
    Investor or a Carlyle Affiliate (as such term is defined in the Purchase
    Agreement), at the most current address given by the Holder to the Company
    in accordance with the provisions hereof, which address initially is the
    address of the Purchaser (as such term is defined in the Purchase
    Agreement) set forth in the Purchase Agreement, with a copy to Gibson, Dunn
    & Crutcher LLP, 1050 Connecticut Avenue, N.W., Suite 900, Washington, D.C.
    20036,  Facsimile: (202) 467-0539, Attention:  John F. Olson, Esq.; and


                                          19
<PAGE>


              (iii)    if to the Company, initially at its address set forth in
    the Purchase Agreement and thereafter at such other address, notice of
    which is given in accordance with the provisions hereof, with a copy to
    McDermott, Will & Emery, 2049 Century Park East, Los Angeles, CA  90067,
    Facsimile: 310.277.4730, Attn:  Mark J. Mihanovic, Esq., and Arent, Fox,
    Kintner, Plotkin & Kahn, 1050 Connecticut Avenue, N.W., Suite 600,
    Washington, D.C. 20036, Facsimile: 202.857.6395, Attn: Gerald P. McCartin,
    Esq.

         All such notices and communications shall be deemed to have been duly
given:  at the time delivered by hand, if personally delivered; five business
days after being deposited in the mail, postage prepaid, if mailed; when
answered back, if telexed; when receipt acknowledged, if telecopied; and on the
next business day, if timely delivered to an air courier guaranteeing overnight
delivery.  The Company shall promptly provide a list of the most current
addresses of the Holders of Registrable Securities given to it in accordance
with the provisions hereof to any such Holder for the purpose of enabling such
Holder to communicate with other Holders in connection with this Agreement.

    (e)  SUCCESSORS AND ASSIGNS.

         This Agreement shall inure to the benefit of and be binding upon the
successors and assigns of each of the parties.

    (f)  COUNTERPARTS.

         This Agreement may be executed in any number of counterparts and by
the parties hereto in separate counterparts, each of which when so executed
shall be deemed to be an original and all of which taken together shall
constitute one and the same agreement.

    (g)  HEADINGS.

         The headings in this Agreement are for convenience of reference only
and shall not limit or otherwise affect the meaning hereof.

    (h)  GOVERNING LAW.

         This Agreement shall be construed, interpreted and the rights of the
parties determined in accordance with the internal laws of the State of New
York, without regard to the conflict of law principles thereof; except with
respect to matters of law concerning the internal corporate affairs of any
corporate entity which is a party to or the subject of this Agreement, and as to
those matters the law of the jurisdiction under which the respective entity
derives its powers shall govern.

    (i)  SEVERABILITY.

         In the event that any one or more of the provisions contained herein,
or the application thereof in any circumstance, is held invalid, illegal or
unenforceable, the validity, legality and enforceability of any such provision
in every other respect and of the remaining provisions contained herein shall
not be affected or impaired thereby.


                                          20
<PAGE>

    (j)  FORMS.

         All references in this Agreement to particular forms of Registration
Statements are intended to include all successor forms which are intended to
replace, or to apply to similar transactions as, the forms herein referenced.

    (k)  ENTIRE AGREEMENT.

         This Agreement and the Purchase Agreement are intended by the parties
as the final expression of their agreement and intended to be a complete and
exclusive statement of the agreement and understanding of the parties hereto in
respect of the subject matter contained herein.  There are no restrictions,
promises, warranties or undertakings, other than those set forth or referred to
herein or therein with respect to the registration rights granted by the Company
with respect to the securities sold pursuant to the Purchase Agreement.  This
Agreement and the Purchase Agreement supersede all prior agreements and
understandings between the parties with respect to such subject matter.

    (l)  GE REGISTRATION RIGHTS AGREEMENT.

         If Holders elect to join in a request for Demand Registration pursuant
to Section 2(d) of the GE Registration Rights Agreement, then such registration
of Holders' shares shall, with respect to the terms and conditions of this
Agreement, be treated as if such registration were a Demand Registration
pursuant to Section 2 of this Agreement; PROVIDED, HOWEVER, that such
registration of Holders' shares pursuant to Section 2(d) of the GE Registration
Rights Agreement shall not: (i) count as one of the two Demand Registrations
available to Holders pursuant to this Agreement, or (ii) be subject in any way
whatsoever to the $5 million threshold of Section 2(b) of this Agreement.

                               [signature page follows]


                                          21
<PAGE>


         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed, as of the day and year first above written.

                       INSIGHT HEALTH SERVICES CORP.,
                       a Delaware corporation


                       By:
                               -------------------------------------------
                             Name:
                                  ----------------------------------------
                             Title:
                                   ---------------------------------------


                       CARLYLE PARTNERS II, L.P.,
                       a Delaware limited partnership

                       By:   TC Group, L.L.C., as the  General Partner



                             By:
                                ------------------------------------------
                             Name:
                                  ----------------------------------------
                             Title:   Managing Director
    
    
                       CARLYLE PARTNERS III, L.P.,
                       a Delaware limited partnership

                       By:   TC Group, L.L.C., as the  General Partner



                             By:
                                ------------------------------------------
                             Name:
                                  ----------------------------------------
                             Title:   Managing Director
    
    
                       CARLYLE INTERNATIONAL PARTNERS II, L.P.,
                       a Cayman Islands exempted limited partnership

                       By:   TC Group, L.L.C., as the General Partner


                             By:
                                ------------------------------------------
                             Name:
                                  ----------------------------------------
                             Title:   Managing Director


                                          22
<PAGE>

                       CARLYLE INTERNATIONAL PARTNERS III, L.P.,
                       a Cayman Islands exempted limited partnership

                       By:   TC Group, L.L.C., as the  General Partner



                             By:
                                ------------------------------------------
                             Name:
                                  ----------------------------------------
                             Title:   Managing Director
    
    
                       C/S INTERNATIONAL PARTNERS,
                       a Cayman Islands general partnership

                       By:   TC Group, L.L.C., as the General Partner



                             By:
                                ------------------------------------------
                             Name:
                                  ----------------------------------------
                             Title:   Managing Director
    
    
                       STATE BOARD OF ADMINISTRATION OF
                       FLORIDA,
                       a separate account maintained pursuant to an Investment
                       Management Agreement dated as of September 6, 1996
                       between the State Board of Administration of Florida,
                       Carlyle Investment Group, L.P. and Carlyle Investment
                       Management, L.L.C.

                       By:   Carlyle Investment Management, L.L.C.,
                             as Investment Manager

                             By:
                                ------------------------------------------
                             Name:
                                  ----------------------------------------
                             Title:
                                   ---------------------------------------


                                          23
<PAGE>

                       CARLYLE INVESTMENT GROUP, L.P.,
                       a Delaware limited partnership

                       By:   TC Group, L.L.C., as the  General Partner


                             By:
                                ------------------------------------------
                             Name:
                                  ----------------------------------------
                             Title:   Managing Director


                       CARLYLE-INSIGHT INTERNATIONAL
                       PARTNERS, L.P., 
                       a Cayman Islands exempted limited partnership

                       By:   TC Group, L.L.C., as the  General Partner


                             By:
                                ------------------------------------------
                             Name:
                                  ----------------------------------------
                             Title:   Managing Director
    
    
                       CARLYLE-INSIGHT PARTNERS, L.P.,
                       a Delaware limited partnership

                       By:   TC Group, L.L.C., as the General Partner



                             By:
                                ------------------------------------------
                             Name:
                                  ----------------------------------------
                             Title:   Managing Director





                                          24

<PAGE>
                                                                      Exhibit 5

                            INSIGHT HEALTH SERVICES CORP.
                  CERTIFICATE OF DESIGNATION, PREFERENCES AND RIGHTS
                       OF CONVERTIBLE PREFERRED STOCK, SERIES B
                                           
                (Pursuant to Section 151(g) of the General Corporation
                            Law of the State of Delaware.)

      InSight Health Services Corp., a corporation organized and existing under
the laws of the State of Delaware (hereinafter the "Company"), DOES HEREBY
CERTIFY THAT, pursuant to authority conferred upon the Board of Directors of the
Company (the "Board") by the certificate of incorporation of the Company, as
amended, the Board unanimously adopted the following resolutions on October 14,
1997 authorizing the issuance of the Series B Convertible Preferred Stock of the
Company, which resolutions are still in full force and effect and are not in
conflict with any provisions of the Certificate of Incorporation or Bylaws of
the Company: 

      RESOLVED, that pursuant to authority vested in the Board by the 
Certificate of Incorporation, the Board does hereby establish a series of 
preferred stock of the Company from the Company's authorized class of 
3,500,000 shares of $.001 par value preferred shares, such series to consist 
of 25,000 shares, and does hereby fix and state the voting rights, 
designation, powers, preferences and relative participating, optional or 
other special rights and the qualifications, limitations or restrictions 
thereof, as follows:

      SECTION 1.     DESIGNATION.  

      The Preferred Stock created and authorized hereby shall be designated as
the "Convertible Preferred Stock, Series B" (hereinafter called the "SERIES B
PREFERRED STOCK").  The number of shares of Series B Preferred Stock shall be
25,000 and no more.

      SECTION 2.     RANK.

      The Series B Preferred Stock shall, with respect to dividend distributions
and distributions upon the liquidation, winding up and dissolution of the
Company, rank senior to all classes of Common Equity of the Company, and to each
other class or series of Capital Stock of the Company (except for the
Convertible Preferred Stock, Series A (hereinafter called the "SERIES A
PREFERRED STOCK")) the terms of which do not expressly provide that it ranks
senior to or on a parity with the Series B Preferred Stock as to dividend
distributions and distributions upon the liquidation, winding up and dissolution
of the Company (collectively referred to with the Common Equity of the Company
as "JUNIOR SECURITIES").  The Series B Preferred Stock shall, with respect to
dividend distributions and distributions upon the liquidation, winding up and
dissolution of the Company, rank on a parity with any class or series of Capital
Stock hereafter created which expressly provides that it ranks on a parity with
the Series B Preferred Stock as to dividend distributions and distributions upon
the liquidation, winding up and dissolution of the Company (shares of such a
class or series, together with shares of the Series A Preferred Stock, shares of
the Convertible Preferred Stock, Series C (the "SERIES C PREFERRED STOCK"), and
shares
<PAGE>

of the Convertible Preferred Stock, Series D (the "SERIES D PREFERRED
STOCK") are, collectively, the "PARITY SECURITIES"); provided that any purported
Parity Securities that were not created, authorized or issued in accordance with
Section 11 hereof shall be deemed to be Junior Securities and not Parity
Securities.  The Series B Preferred Stock shall, with respect to dividend
distributions and distributions upon the liquidation, winding up and dissolution
of the Company, rank junior to each class or series of Capital Stock hereafter
issued in accordance with Section 11 hereof and which expressly provides that it
ranks senior to the Series B Preferred Stock as to dividend distributions or
distributions upon the liquidation, winding up and dissolution of the Company
("SENIOR SECURITIES").  Any purported Supervoting Securities that were not
created, authorized or issued in accordance with Section 11 hereof shall be
deemed for all purposes related to voting rights to be identical to Common
Stock, including, without limitation, as to voting rights with respect to the
election of directors and all other matters submitted to a vote of stockholders.

      SECTION 3.     DIVIDENDS.

      (a)  The Company may (when, as and if declared by the Board of Directors
of the Company) declare and pay dividends, out of the entire assets and funds of
the Company legally available therefor to the holders of the Series A Preferred
Stock, the Series B Preferred Stock, the Series C Preferred Stock, the Series D
Preferred Stock and the common stock, $.001 par value per share, of the Company
(the "COMMON STOCK") ratably based on the number of shares of Common Stock held
by each such Holder (assuming full conversion of all such shares of Series A
Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, and Series
D Preferred Stock into Common Stock); PROVIDED, HOWEVER, that no dividend
whatsoever shall be paid, and no distribution shall be made, on any Common Stock
unless and until each holder of the Series A Preferred Stock, Series B Preferred
Stock, Series C Preferred Stock, and Series D Preferred Stock shall have been
paid in full its respective pro rata portion of such dividend.

      (b)  Holders of shares of the Series B Preferred Stock shall be entitled
to receive the dividends provided for in Section 3(a) hereof in preference to
and in priority over any dividends upon any of the Junior Securities, except
for the Common Stock.

      (c)  Holders of shares of the Series B Preferred Stock shall be entitled
to receive the dividends provided for in Section 3(a) hereof on a pro rata basis
with respect to any dividends upon any Parity Securities.

      SECTION 4.     LIQUIDATION PREFERENCE.

      (a)  Upon any Liquidating Event with respect to the Company, the Holders
of shares of Series B Preferred Stock then outstanding shall be entitled to be
paid, out of the assets of the Company available for distribution to its
stockholders, $1,000 per share of Series B Preferred Stock (the "LIQUIDATION
PREFERENCE"), plus an amount in cash equal to any declared but unpaid dividends
thereon, before any payment shall be made or any assets distributed to the
holders of any of the Junior Securities, including, without limitation, Common
Stock.  Except as provided in the preceding sentence, holders of shares of
Series B Preferred Stock shall not be entitled to any distribution in the event
of liquidation, dissolution or winding up of the affairs of the

                                       2
<PAGE>

Company.  If the assets of the Company are not sufficient to pay in full the 
liquidation payments payable to the holders of outstanding shares of the 
Series B Preferred Stock and all Parity Securities, then the holders of all 
such shares shall share equally and ratably in such distribution of assets of 
the Company in accordance with the amounts which would be payable on such 
distribution if the amount to which the holders of outstanding shares of 
Series B Preferred Stock and the holders of outstanding shares of all Parity 
Securities are entitled were paid in full.

      (b)  "LIQUIDATING EVENT" shall mean, with respect to any Person, any of
the following events:  (i) the commencement by such Person of a voluntary case
under the bankruptcy laws of the United States, as now or hereafter in effect,
or the commencement of an involuntary case against such Person with respect to 
which the petition shall not be controverted within 15 days, or be dismissed 
within 60 days, after commencement thereof; (ii) the appointment of a custodian
for, or the taking charge by a custodian of, all or substantially all of the 
property of such Person; (iii) the commencement by such Person of any proceeding
under any reorganization, arrangement, adjustment of debt, relief of debtors, 
dissolution, insolvency or liquidation or similar law of any jurisdiction 
whether now or hereafter in effect relating to such Person; (iv) the 
commencement against such Person of any proceeding set forth in the preceding 
clause (iii), which is not controverted within 10 days thereof and dismissed 
within 60 days after the commencement thereof; (v) the adjudication of such 
Person insolvent or bankrupt, or the adoption by such Person of a plan of 
liquidation; (vi) the occurrence of any Change of Control with respect to 
such Person or (vii) the filing of a certificate of dissolution in respect of 
the Company with the Secretary of State of the State of Delaware; in any of 
cases (i) through (vi) above, in a single transaction or series of related 
transactions. 
      
      SECTION 5.     TYPE A CONVERSION
   
      (a)  Each holder of Series B Preferred Stock shall have the right, at its
option, at any time, to convert, subject to the terms and provisions of this
Section 5, all, but not less than all, of its Series B Preferred Stock then
outstanding into such number of fully paid and non-assessable shares of Common
Stock as results from dividing (i) the sum of (A) the aggregate Liquidation
Preference of all shares of Series B Preferred Stock to be converted plus (B)
any declared but unpaid dividends on such shares, by (ii) the applicable
Conversion Price on the Conversion Date.  In addition, and without limiting the
right to conversion in whole set forth above, substantially contemporaneously
with any Partial Conversion Event, each holder of Series B Preferred Stock shall
have the right, at its option, to convert (which conversion, if such option is
exercised, shall be deemed to occur on such Partial Conversion Event), subject
to the terms and provisions of this Section 5, all or any part of its Series B
Preferred Stock then outstanding into such number of fully paid and
non-assessable shares of Common Stock as results from dividing (i) the sum of
(A) the aggregate Liquidation Preference of all shares of Series B Preferred
Stock to be converted plus (B) any declared but unpaid dividends on such shares,
by (ii) the applicable Conversion Price (as defined below) on the Conversion
Date.  The person or persons entitled to receive the shares of Common Stock upon
conversion of such shares of Series B Preferred Stock shall be treated for all
purposes as having become the record holder or holders of such shares of Common
Stock on the Conversion Date and such conversion shall be at the Conversion
Price in effect at such time.  

                                       3
<PAGE>

     
      (b)  In order to convert all or any portion of its outstanding Series B
Preferred Stock into shares of Common Stock pursuant to this Section 5, the
holder of such Series B Preferred Stock shall deliver certificates representing
the shares of Series B Preferred Stock to be converted to the Company at its
principal office, together with written notice that it elects to convert those
shares of Series B Preferred Stock into shares of Common Stock in accordance
with the provisions of this Section 5.  Such notice shall specify the number of
shares of Series B Preferred Stock to be converted and the name or names in
which the holder wishes the certificates for shares of Common Stock to be
registered.
      
      (c)  Upon any Type A Conversion, pursuant to this Section 5 and Section 5
of the certificate of designation of Series C Preferred Stock, of all of the
outstanding shares of Series B Preferred Stock and Series C Preferred Stock, the
Company shall immediately file a certificate with the Secretary of State of the
State of Delaware, pursuant to Section 151(g) of the Delaware General
Corporation Law, setting forth a resolution or resolutions adopted by the Board
of Directors of the Company that none of the authorized shares of Series D
Preferred Stock are outstanding and that none will be issued subject to the
Series D Certificate of Designation.
      
      SECTION 6.     TYPE B CONVERSION
    
      (a)  The right to conversion set forth in this Section 6 shall be in
addition to, and not in lieu of, the conversion rights set forth in Section 5.  

      (b)  At any time on or after the Type B Trigger Date, the Majority Holders
may elect to deliver an irrevocable Type B Conversion notice (the "TYPE B
CONVERSION NOTICE") to the Company; PROVIDED, HOWEVER, that no such Type B
Conversion Notice shall be effective unless substantially contemporaneously with
the delivery of such Type B Conversion Notice, Majority Holders of the Series C
Preferred Stock shall deliver a Type B Conversion Notice (as defined in the
Certificate of Designation relating to the Series C Preferred Stock) to the
Company.  The date of delivery to the Company of a Type B Conversion Notice
shall be denominated herein a "TYPE B EVENT DATE" or a "CONVERSION DATE".  Upon
receipt of a Type B Conversion Notice, the Company shall as soon as practicable
deliver a copy of such Type B Conversion Notice to each holder of Series B
Preferred Stock and each holder of Series C Preferred Stock.
   
      (c)  On the Type B Event Date, each share of Series B Preferred Stock then
outstanding shall automatically be converted into such number of fully paid and
non-assessable shares of Series D Preferred Stock as results from dividing (i)
the sum of (A) the aggregate Liquidation Preference of such share of Series B
Preferred Stock plus (B) any declared but unpaid dividends on such share, by
(ii) the product of ten (10) times the applicable Conversion Price on the
Conversion Date.  The person or persons entitled to receive the shares of Series
D Preferred Stock upon conversion of such shares of Series B Preferred Stock
shall be treated for all purposes (including without limitation voting rights)
as having become the record holder or holders of such shares of Series D
Preferred Stock on the Type B Event Date, whether or not such person or persons
deliver its certificates for shares of Series B Preferred Stock to the Company
on the Type B Event Date.  

                                       4
<PAGE>

      (d)  As soon as practicable after the Type B Event Date, each holder of
Series B Preferred Stock shall deliver its certificates for shares of Series B
Preferred Stock to the Company at its principal office.  Except as provided in
this Certificate of Designation, all rights with respect to such Series B
Preferred Stock shall terminate on the Type B Event Date, and on such Type B
Event Date the holders of the shares of Series D Preferred Stock into which the
shares of Series B Preferred Stock were converted shall have all of the rights
accorded to holders of the Company's Series D Preferred Stock.
    
      (e)  The rights of holders of shares of Series B Preferred Stock pursuant
to this Section 6 shall not be transferable, except to an Initial Purchaser
Affiliate.
     
      SECTION 7.     GENERAL PROVISIONS RELATING TO CONVERSION
    
      The following provisions shall be applicable to any conversion pursuant to
either Section 5 or Section 6 hereof.
    
      (a)  As promptly as practicable after the surrender as hereinabove 
provided of certificates representing shares of Series B Preferred Stock 
converted or to be converted into shares of Common Stock or Series D 
Preferred Stock, the Company shall deliver or cause to be delivered to the 
holder, or the holder's designee, certificates representing the number of 
fully paid and non-assessable shares of Common Stock or Series D Preferred 
Stock into which the shares of Series B Preferred Stock are converted 
(including any adjustment pursuant to Section 8(b) below) and, if less than 
the entire number of shares of Series B Preferred Stock represented by the 
certificate or certificates surrendered is to be converted, a new certificate 
for the number of shares of Series B Preferred Stock not so converted.  So 
long as any shares of Series B Preferred Stock remain outstanding, the 
Company shall not close its Common Stock transfer books. The issuance of 
certificates representing shares of Common Stock or Series D Preferred Stock 
issued upon the conversion of shares of Series B Preferred Stock shall be 
made without charge to the holder of Series B Preferred Stock for any tax in 
respect of the issuance of such certificates (other than any transfer, 
withholding or other tax if the shares of Common Stock or Series D Preferred 
Stock are to be registered in a name different from that of the registered 
holder of Series B Preferred Stock).

      (b)  No fractional shares of Common Stock or scrip representing 
fractional shares of Common Stock or Series D Preferred Stock shall be issued 
upon any conversion of any shares of Series B Preferred Stock, and the number 
of shares of Common Stock or Series D Preferred Stock to be issued shall be 
rounded up to a whole share.

      (c)  The Company shall at all times reserve and keep available out of 
its authorized but unissued shares of Common Stock and preferred stock, par 
value $.001 per share, solely for the purpose of effecting the conversion of 
shares of Series B Preferred Stock and the Series C Preferred Stock and the 
issuance of Common Stock in respect of the Warrants and the GE Warrants, the 
full number of whole shares of Common Stock and Series D Preferred Stock then 
deliverable upon the conversion of all shares of Series B Preferred Stock and 
Series C Preferred Stock then outstanding and the issuance of Common Stock in 
respect of the Warrants and the GE Warrants.  The Company shall take at all 
times such corporate action as shall be necessary in

                                      5
<PAGE>

order that the Company may validly and legally issue fully paid and 
non-assessable shares of Common Stock or Series D Preferred Stock upon the 
conversion of shares of Series B Preferred Stock in accordance with the 
provisions of Section 5 and Section 6, the conversion of shares of Series C 
Preferred Stock and the issuance of Common Stock in respect of the Warrants 
and the GE Warrants.  If at any time the number of authorized but unissued 
shares of Common Stock or Series D Preferred Stock shall not be sufficient to 
effect the conversion of all then outstanding shares of the Series B 
Preferred Stock, the conversion of all then outstanding shares of Series C 
Preferred Stock and the issuance of Common Stock in respect of the Warrants 
and the GE Warrants, in addition to such other remedies as shall be available 
to the holders of the Series B Preferred Stock, the Company shall forthwith 
take such corporate action as may be necessary to increase its authorized but 
unissued shares of Common Stock or Series D Preferred Stock to such numbers 
of shares as shall be sufficient for such purpose, including but not limited 
to promptly calling and holding a meeting of the Company's stockholders, at 
which the Company's stockholders shall vote on a proposed amendment to the 
Certificate of Incorporation that would so increase the number of authorized 
shares of Common Stock or preferred stock, par value $.001 per share, as 
appropriate, a favorable vote for which amendment shall have been recommended 
to the Company's stockholders by the Board of Directors, pursuant to a duly 
and validly adopted resolution of the Board of Directors setting forth the 
amendment proposed and declaring its advisability, all in accordance with 
Section 242 of the Delaware General Corporation Law; and, in case of an 
increase in the number of authorized shares, of such preferred stock, the 
Board of Directors shall promptly cause to become effective a certificate of 
increase pursuant to Section 151 of the Delaware General Corporation Law.   

      (d)  If any shares of Common Stock or Series D Preferred Stock to be 
reserved for the purpose of conversion of Series B Preferred Stock require 
registration or listing with, or approval of, any governmental authority, 
stock exchange, NASD Inc., Nasdaq or other regulatory body under any federal 
or state law, federal or state regulation, rule of NASD Inc., Nasdaq or 
otherwise, before such shares may be validly issued or delivered upon 
conversion, the Company shall, in good faith and as expeditiously as 
practicable, endeavor to secure such registration, listing or approval, as 
the case may be.

      (e)  All shares of Common Stock or Series D Preferred 
Stock that may be issued upon conversion of the Series B Preferred Stock 
shall upon issuance by the Company be validly issued, fully paid and 
non-assessable and free from all taxes, liens and charges with respect to the 
issuance thereof.

      (f)  In the event of any taking by the Company of a 
record of the holders of any class of Capital Stock for the purpose of 
determining the holders thereof who are entitled to receive any dividend or 
other distribution, any right to subscribe for, purchase or otherwise acquire 
any shares of Capital Stock or any other securities or property, or to 
receive any other right, the Company shall mail to each holder of Series B 
Preferred Stock, at least 20 days prior to the date specified therein, a 
notice specifying the date on which any such record is to be taken for the 
purpose of such dividend, distribution or right, and the amount and character 
of such dividend, distribution or right. 
    
                                       6
<PAGE>

      (g)  The Company shall not, by amendment of its Certificate of
Incorporation or through any reorganization, transfer of assets, consolidation,
merger, dissolution, issuance or sale of securities or any other action, avoid
or seek to avoid the observance or performance of any of the terms to be
observed or performed hereunder by the Company, but shall at all times in good
faith assist in the carrying out of all the provisions of this Section 7 and
Sections 5, 6 and 8 and in the taking of all such action as may be necessary or
appropriate in order to protect the conversion rights of the holders of the
shares of Series B Preferred Stock against impairment of any kind.
    
      SECTION 8.     CONVERSION PRICE.  
    
      (a)  As used herein, the "Conversion Price" shall initially be $8.375 per
share of Common Stock, subject to adjustment as set forth below.  In order to
prevent the dilution of the rights granted hereunder, the Conversion Price shall
be subject to adjustment from time to time as provided in this Section 8.

      (b)  If and whenever the Company issues or sells or, in accordance with
Section 8(c), is deemed to have issued or sold, any share of Common Equity
without consideration or for a consideration per share less than the Conversion
Price in effect immediately prior to such issuance or sale, the Conversion Price
in effect immediately prior to such time shall immediately be reduced to the
price determined by dividing (i) an amount equal to the sum of (A) the number of
shares of Common Equity outstanding immediately prior to such issuance
multiplied by the Conversion Price in effect immediately prior to such issuance,
and (B) the consideration, if any, received by the Company upon such issuance,
by (ii) the total number of shares of Common Equity outstanding immediately
after such issuance.  Notwithstanding the foregoing, there shall be no
adjustment to the Conversion Price with respect to (i) the granting of stock
options to employees of the Company authorized but not granted as of the Initial
Issue Date for an aggregate of up to 300,000 shares of Common Equity (as such
number of shares is equitably adjusted for subsequent stock splits
reclassifications, stock combinations, stock dividends and recapitalizations),
or (ii) the issuance upon exercise of up to 300,000 shares of Common Equity (as
such number of shares is equitably adjusted for subsequent stock splits, stock
combinations, stock dividends and recapitalizations) in connection with the
stock options described in clause (i) of this sentence.
 
      (c)  For purposes of determining the adjusted Conversion Price under
Section 8(b) above, the following shall be applicable:
      
           (1)  CONSIDERATION.  If any Common Equity, Options or Convertible
    Securities are issued or sold or deemed to have been issued or sold for
    cash, the consideration received therefor shall be deemed to be the cash
    amount received by the Company therefor (which, in the case of any public
    offering of such securities for cash, shall not be reduced for any
    underwriters discount, and in no event shall be reduced by the amount of
    any reasonable expenses actually paid by the Company in connection
    therewith).  In case any Common Equity, Options or Convertible Securities
    are issued or sold for a consideration other than cash, the amount of the
    consideration other than cash received by

                                      7
<PAGE>

the Company shall be the fair market value of such consideration.  In 
case any Common Equity, Options or Convertible Securities are issued to 
the owners of the other constituent entity in connection with any merger 
in which the Company or any Subsidiary of the Company is a constituent 
entity, the amount of consideration for such Common Equity, Options or 
Convertible Securities shall be deemed to be the fair market value of 
such portion of the net assets and business of such other constituent 
entity as is fairly attributable to such Common Equity, Options or 
Convertible Securities, as the case may be.  The fair market value of any 
consideration other than cash shall be determined jointly by the Company 
and the Majority Holders.  If such parties are unable to reach agreement 
within a reasonable period of time, such fair market value shall be 
determined by an appraiser jointly selected by the Company and the 
Majority Holders.  If such parties are unable to reach agreement within a 
reasonable period of time, such fair market value shall be determined by 
an appraiser reasonably selected by the Company and reasonably approved 
by the Majority Holders.  The determination of such appraiser shall be 
final and binding on the Company and the holders of the shares of Series 
B Preferred Stock, and the fees and expenses of such appraiser shall be 
paid by the Company, unless the fair market value determined by such 
appraiser is less than five percent (5%) above the value proposed in 
writing by the Company and rejected by the Majority Holders prior to the 
selection of such appraiser, in which event the fees and expenses of such 
appraiser shall be for the account of the holders of the then outstanding 
shares of Series B Preferred Stock (on a pro rata basis).

           (2) OPTIONS AND CONVERTIBLE SECURITIES.  In the case of the granting
    or sale of any Option or Convertible Security (whether or not at the time 
    convertible, exercisable or exchangeable):

                 (A)  the aggregate maximum number of shares of Common Equity
                 deliverable, directly or indirectly, upon exercise of any 
                 Option shall be deemed to have been issued at the 
                 time such Option was granted and for a consideration equal
                 to the (i) consideration (determined in the manner provided in
                 subsection (1) above), if any, received by the Company upon the
                 issuance of such Option plus (ii) the minimum purchase price 
                 provided in such Option for the Common Equity covered thereby,
                 up to an amount equal to the Conversion Price in effect at the
                 time such Option was granted;

                 (B)  the aggregate maximum number of shares of Common Equity
                 deliverable upon conversion of or in exchange for any such
                 Convertible Security, or upon the exercise of any Option to
                 purchase or acquire any Convertible Security and the 
                 subsequent conversion or exchange thereof, shall be deemed to
                 have been issued at the time such Convertible Security was 
                 issued or such Option was issued and for a consideration equal
                 to the consideration, if any, received by the Company for any
                 such Convertible Security and any related Option, plus the 
                 additional consideration (determined in the manner provided in
                 subsection (1)

                                       8
<PAGE>

                 above), if any, to be received by the Company upon the
                 conversion or exchange of such Convertible Security, or upon
                 the exercise of any related Option to purchase or acquire any
                 Convertible Security and the subsequent conversion or exchange
                 thereof;

                 (C)  on any change in the number of shares of Common Equity
                 deliverable, directly or indirectly, upon conversion, exercise
                 or exchange of any such Option or Convertible Security or any 
                 change in the consideration to be received by the Company upon
                 such exercise, conversion or exchange, including, but not 
                 limited to, a change resulting from the anti-dilution 
                 provisions thereof, the Conversion Price as then in effect 
                 shall forthwith be readjusted to such Conversion Price as would
                 have been obtained had an adjustment been made upon the 
                 issuance of such Option or Convertible Security upon the basis
                 of such change;

                 (D)  if the Conversion Price shall have been adjusted upon the
                 issuance of any such Option or Convertible Security, no further
                 adjustment of the Conversion Price shall be made for the actual
                 issuance of Common Equity upon any exercise, conversion, or 
                 exchange thereof;

      provided, however, that none of the events set forth in Section 8(c)(2)(A)
      through 8(c)(2)(D), inclusive, shall result in any increase in the 
      Conversion Price.

           (3)  INTEGRATED TRANSACTION.  In case any Option is issued in 
      connection with the issue or sale of other securities of the Company,
      together comprising one integrated transaction in which no specific 
      consideration is allocated to such Options by the parties thereto, the
      Options shall be deemed to have been issued without consideration.

           (4)  TREASURY SHARES.  The number of shares of Common Equity 
      outstanding at any given time shall not include shares owned or held by or
      for the account of the Company, and the disposition of any shares so owned
      or held shall be considered an issuance or sale of Common Equity.

           (5)  RECORD DATE.  If the Company takes a record of the holders of
      Common Equity for the purpose of entitling them (A) to receive a dividend
      or other distribution payable in Common Equity, Options or in Convertible
      Securities or (B) to subscribe for or purchase Common Equity, Options or
      Convertible Securities, then such record date shall be deemed to be the
      date of the issuance or sale of the shares of Common Equity deemed to have
      been issued or sold upon the declaration of such dividend or the making of
      such other distribution or the date of the granting of such right of     
      subscription or purchase, as the case may be.

      (d)  If the Company at any time subdivides (by any stock split, stock 
dividend, reclassification, recapitalization or otherwise) one or more classes
of its outstanding shares of Common Equity into a greater number of shares, the
Conversion Price in effect immediately prior to such subdivision shall be 
proportionately reduced.  If the Company at any time combines

                                       9
<PAGE>

(by reverse stock split or otherwise) one or more classes of its outstanding 
shares of Common Stock into a smaller number of shares, the Conversion Price 
in effect immediately prior to such combination shall be proportionately 
increased.

       (e)  Any recapitalization, reorganization, reclassification, 
consolidation, merger, sale of all or substantially all of the Company's 
assets or other transaction, in each case which is effected in such a way 
that the holders of Common Equity are entitled to receive (either directly or 
upon subsequent liquidation) stock, securities, cash, debt instruments or 
assets with respect to or in exchange for Common Equity is referred to herein 
as a "CORPORATE CHANGE." In case of any Corporate Change, each share of 
Series B Preferred Stock then outstanding will become convertible only into 
the kind and amount of securities, cash and other property receivable upon 
such Corporate Change by the holder of the number of shares of Common Stock 
into which such share of Series B Preferred Stock was convertible immediately 
prior thereto (assuming such holder of Common Stock failed to exercise any 
rights of election).  The Company shall not effect any such consolidation, 
merger or sale, unless prior to the consummation thereof, the successor 
entity (if other than the Company) resulting from consolidation or merger or 
the entity purchasing such assets assumes by written instrument the 
obligation to deliver to the holders of shares of Series B Preferred Stock 
such shares of stock, securities, cash, debt instruments or assets as, in 
accordance with the foregoing provisions, such holder may be entitled to 
acquire.

      (f)  If any event occurs of the type contemplated by the provisions of 
this Section 8 but not expressly provided for by such provisions (including, 
without limitation, the granting of stock appreciation rights, phantom stock 
rights or other rights with equity features), then the Company's Board of 
Directors shall make an appropriate adjustment in the Conversion Price so as 
to protect the rights of the holders of the shares of Series B Preferred 
Stock; provided that no such adjustment shall increase the Conversion Price 
obtainable as otherwise determined pursuant to this Section 8. 

      (g)  If the Company declares or pays a dividend upon the Common Equity 
payable otherwise than out of earnings or earned surplus (determined in 
accordance with generally accepted accounting principles, consistently 
applied) except for a stock dividend payable in shares of Common Stock (a 
"LIQUIDATING DIVIDEND"), then the Company shall pay to each holder of a share 
of Series B Preferred Stock at the time of payment thereof the Liquidating 
Dividend which would have been paid to such holder on the Common Stock such 
holder would have owned had such holder fully exercised its right to convert 
the shares of Series B Preferred Stock into shares of Common Stock 
immediately prior to the date on which a record is taken for such Liquidating 
Dividend, or, if no record is taken, the date as of which the record holders 
of Common Equity entitled to such dividends are to be determined; provided, 
however, that if a Liquidating Dividend would involve the declaration or 
payment as a dividend of at least the lesser of (i) twenty percent (20%) of 
the Company's assets and (ii) Five Million Dollars ($5,000,000), then such 
Liquidating Dividend shall, at the option of the Majority Holders, be deemed 
to be a Liquidating Event and the rights of the holders of the shares of 
Series B Preferred Stock upon such Liquidating Event shall be governed by 
Section 4 hereof.

                                       10
<PAGE>

      (h)  Any transaction approved by the unanimous vote of 
the Acquisitions Committee or the unanimous vote of the Board pursuant to 
Section 10(c)(4) hereof shall not result in any adjustment to the Conversion 
Price in effect as of the closing of such transaction.

      SECTION 9.   NO REDEMPTION.

           The shares of Series B Preferred Stock shall not be 
subject to mandatory redemption by the Company.

                                       11
<PAGE>

      SECTION 10.    VOTING RIGHTS AND RELATED PROVISIONS.

      (a)  The Holders of shares of the Series B Preferred Stock will have 
the right to vote with the holders of Common Stock and the holders of the 
Series C Preferred Stock with respect to all matters submitted to a 
shareholder vote, except for the election of directors, which will be 
governed by Section 10(b) below.  Each Holder of Series B Preferred Stock 
will have one vote for every share of Common Stock into which each share of 
Series B Preferred Stock is convertible pursuant to Sections 5 and 7 hereof 
as of the record date for such vote; provided, however, that the aggregate 
number of votes under this Section 10(a), when combined with the aggregate 
number of votes attributable to the holders of the Series C Preferred Stock 
pursuant to Section 10(a) of the Certificate of Designation with respect to 
the Series C Preferred Stock, with respect to any given matter submitted to a 
shareholder vote, shall not exceed 37% of the total number of votes eligible 
to be cast with respect to such matter (the "AGGREGATE VOTING LIMITATION").  
In order to effectuate the Aggregate Voting Limitation, the eligible votes 
allocable to each holder of shares of Series B Preferred Stock and Series C 
Preferred Stock shall be reduced, on a pro rata basis based on the percentage 
of aggregate Series B Preferred Stock and Series C Preferred Stock 
liquidation preference attributable to the shares owned by such holder, to 
the highest whole number consistent with the Aggregate Voting Limitation.  
Any shares of Series B Preferred Stock or Series C Preferred Stock held by 
the Company or any Subsidiary of the Company shall not have voting rights 
hereunder and shall not be counted in determining the presence of a quorum or 
in calculating any percentage of shares under this Section 10.

      (b)  The provisions set forth in this Section 10(b) shall govern the 
rights of the holders of the Series B Preferred Stock to elect directors of 
the Company:
         
         (1)  SERIES B DIRECTORS; JOINT DIRECTOR.  
         
              (A)  The number of directors of the Company shall be as from time
    to time fixed by, or determined in the manner provided in, the Certificate
    of Incorporation and the Bylaws of the Company (subject, in all respects,
    to the protective provisions contained in Section 11 hereof).  Prior to a
    Type B Event Date, the number of directors shall be no less than eight (8)
    nor more than nine (9), of which one member shall be the Joint Director. 
    Two of such directors shall be designated as "SERIES B DIRECTORS" and shall
    be elected by the Majority Holders and one such director shall be
    designated as "Joint Director" and shall be an Independent director
    nominated by the Majority Holders of the Series B Preferred Stock and the
    Majority Holders of the Series C Preferred Stock, approved by the Board of
    Directors in its sole discretion.  Unless a Type B Conversion Notice has
    been given, one Series B Director shall automatically be removed if the
    aggregate liquidation preference with respect to the Series B Preferred
    Stock owned by the Initial Purchaser and the Initial Purchaser Affiliates,
    taken as a whole, falls below 50% but is no less than 25% of the total
    liquidation preference of the shares of Series B Preferred Stock outstanding
    on the Initial Issue Date.  Unless a Type B Conversion Notice has been 
    given, both Series B Directors shall automatically be removed if the
    aggregate liquidation preference with respect to the Series B Preferred 
    Stock owned by the Initial Purchaser and the Initial Purchaser Affiliates,
    taken as a whole, falls below

                                      12
<PAGE>

    25% of the total liquidation preference of the shares of Series B Preferred
    Stock outstanding on the Initial Issue Date.  Prior to a Type B Event Date,
    the Majority Holders shall have the exclusive right to remove such Series B
    Director or Series B Directors without cause at any time and to designate 
    another person or persons as the Series B Director or Series B Directors.

           (B) The Preferred Stock Directors shall be divided into three (3)  
    classes as nearly equal in number as possible, with the term of office of
    the first Preferred Stock Director to be nominated and elected by the 
    holders of the Series B Preferred Stock, at their option at any time after
    the initial issuance of the shares of Series B Preferred Stock, to expire
    at the annual meeting of stockholders held in 1998, the term of office of
    the second Preferred Stock Director to be nominated and elected by the 
    holders of the Series B Preferred Stock upon initial issuance of the shares
    of Series B Preferred Stock to expire at the annual meeting of stockholders
    held in 2000, the term of office of the Preferred Stock Director to be 
    nominated and elected by the holders of the Series C Preferred Stock upon
    initial issuance of the shares of Series C Preferred Stock to expire at the
    annual meeting of stockholders held in 1999, and the term of office of the
    Joint Director to expire at the annual meeting of stockholders for 1997. 
    At each annual meeting of stockholders after such initial classification 
    and election, directors elected to succeed those directors whose terms 
    expire at such annual meeting shall be elected for a term of office to 
    expire at the third succeeding annual meeting of stockholders after their
    election. 

              (C)  Upon a Type B Event Date, any Series B Director already
    serving as a member of the Board shall continue to serve in such position
    until the expiration of his term and the election of his successor or until
    his earlier death, removal, resignation or retirement. After a Type B Event
    Date, the Joint Director and the Series B Director or Directors shall be
    subject to removal only for cause and only by the affirmative vote of
    eighty percent (80%) of the combined voting power of the outstanding shares
    of the Corporation entitled to vote.  The Preferred Stock Directors and the
    Joint Director shall not be removed without cause otherwise than as
    described in this Section 10(b)(1). 
    
              (D)  After a Type B Event Date, the Board of Directors shall
    comprise:  (i) one Joint Director, until the expiration of his term, as
    provided herein; (ii) three Preferred Stock Directors, until the expiration
    of their respective terms, after which time such positions previously
    elected by holders of the series of Preferred Stock that gave the Type B
    Conversion Notice shall be subject to election by holders of shares of
    Series D Preferred Stock, subject to the limitations contained in the
    Series D Certificate of Designation; (iii) not less than four (4) nor more
    than five (5) additional directors elected by holders of shares of Common
    Equity and Series D Preferred Stock, subject to the limitations contained
    in the Series D Certificate of Designation; and (iv) such number of other
    directors (the "Conversion Directors") elected following a Type B Event
    Date by the holders of shares of Series D Preferred Stock as is determined
    pursuant to the Series D Certificate of Designation.
    
                                      13
<PAGE>

        (2)  With respect to filling the vacancy on the Board of Directors
    with the initial Joint Director, the holders of shares of Series B
    Preferred Stock and Series C Preferred Stock shall give written notice to
    the Secretary of the Company of the identity of the person nominated by
    such holders.  Such written notice shall be executed, manually, or by
    photocopy or facsimile, in any number of counterparts, by the Majority
    Holders of the Series B Preferred Stock and by the Majority Holders of the
    Series C Preferred Stock.  The person so nominated shall be "independent,"
    which means that such person shall not be a director, officer, or employee
    or affiliate (as defined in Section 203(c) of the Delaware General
    Corporation Law) of any of the holders of Series B Preferred Stock or
    Series C Preferred Stock or the Company.  Upon receipt of such written
    notice, the Board of Directors shall have ten (10) business days in which
    to approve or disapprove such nominee.  If the Board of Directors approves
    such nominee, such nominee shall immediately fill such vacancy.  If the
    Board of Directors disapproves such nominee, the Secretary of the Company
    shall immediately give written notice thereof to all of the holders of
    shares of Series B Preferred Stock and Series C Preferred Stock.  If such a
    written notice from the Secretary has not been received by such holders
    twelve (12) business days after the receipt by the Company of such written
    notice of nomination, then the Board of Directors shall be conclusively
    deemed to have approved such nominee and such nominee shall immediately
    fill such vacancy.  If such written notice from the Secretary has been so
    received within such twelve (12) business days, such holders may nominate
    another independent person by written notice to the Secretary, subject to
    the same approval process as hereinabove provided.  Such process of
    nomination and approval or disapproval shall continue until an independent
    person is nominated who is approved or deemed to be approved by the Board
    of Directors.  No nominations for such director shall be made or received
    other than as described in this Section 10(b)(2).  
         
         (3)  With respect to the nomination and election of succeeding Joint
    Directors, the holders of shares of Series B Preferred Stock and Series C
    Preferred Stock shall give timely written notice to the Secretary of the
    Company of the identity of the person nominated by such holders.  Such
    written notice shall be executed, manually, or by photocopy or facsimile,
    in any number of counterparts, by the Majority Holders of the Series B
    Preferred Stock and by the Majority Holders of the Series C Preferred
    Stock.  Such written notice shall be timely if received at the principal
    executive office of the Company not less than 60 days nor more than 120
    days before the meeting of shareholders at which such director is to be
    elected.  The person so nominated shall be "independent," which means that
    such person shall not be a director, officer, employee or affiliate (as
    defined in Section 203(c) of the Delaware General Corporation Law) of any
    of the holders of Series B Preferred Stock or Series C Preferred Stock or
    the Company.  Upon receipt of such written notice, the Board of Directors
    shall have ten (10) business days in which to approve or disapprove such
    nominee.  If the Board of Directors disapproves such nominee, the Secretary
    of the Company shall immediately give written notice thereof to all of the
    holders of shares of Series B Preferred Stock and Series C Preferred Stock. 
    If such a written notice from the Secretary has not been received by such
    holders twelve (12) business days after the receipt by the Company of such
    written

                                      14
<PAGE>

    notice of nomination, then the Board of Directors shall be
    conclusively deemed to have approved such nominee.  If such written notice
    from the Secretary has been so received within such twelve (12) business
    days, such holders may nominate another independent person by written
    notice to the Secretary, subject to the same approval process as
    hereinabove provided.  Such process of nomination and approval or
    disapproval shall continue until an independent person is nominated who is
    approved or deemed to be approved by the Board of Directors.  No
    nominations for such director shall be made or received other than as
    described in this Section 10(b)(3).  Election of such person shall be by
    the holders of shares of the Company's Common Stock.
         
         (4)  Prior to a Type B Event Date, a vacancy of a Preferred Stock
    Director position shall be filled only by a majority vote of or written
    consent of holders of a majority of the then outstanding shares of the
    series of Preferred Stock that elected the director whose death,
    resignation, retirement, disqualification or removal from office caused the
    vacancy.  Prior to a Type B Event Date, a vacancy of the position of Joint
    Director shall be filled only by the Board of Directors, following
    nomination by holders of a majority of the then outstanding shares of
    Series B Preferred Stock and holders of a majority of the then outstanding
    shares of the Series C Preferred Stock, pursuant to the procedure described
    in Section 10(b)(2).  Directors chosen pursuant to any of the foregoing
    provisions shall hold office for a term expiring at the annual meeting of
    stockholders at which the term of the class to which they have been elected
    expires and until their successors are duly elected and have qualified or
    until their earlier resignation or removal.  If holders of shares of Series
    B Preferred Stock shall, pursuant to the certificate of incorporation,
    cease to have the right to elect two Preferred Stock Directors but still
    shall have the right to elect one Preferred Stock Director, then holders of
    a majority of the then outstanding shares of Series B Preferred Stock shall
    promptly designate by written notice to the Company one of the two
    Preferred Stock Directors elected by holders of shares of Series B
    Preferred Stock as the director to be retained, and the other such director
    shall be deemed to have resigned immediately upon receipt by the Company of
    such written notice.  If holders of shares of Series B Preferred Stock
    shall, pursuant to the certificate of incorporation, but not as a result of
    a Type B Conversion, cease to have the right to elect any Preferred Stock
    Directors, then the two directors elected by holders of shares of Series B
    Preferred Stock shall be deemed to have resigned immediately upon such
    cessation.  Upon the occurrence of any such deemed resignation referred to
    in the immediately preceding two sentences, the directorship previously
    held by the director deemed to have resigned shall automatically become a
    vacancy to be filled by the Board of Directors.
         
         (5)  Shares of Series B Preferred Stock shall be deemed to be shares
    "entitled to vote" or "entitled to vote in the election of directors" for
    purposes of the provisions of the Certificate of Incorporation that employ
    such terms, and, for purposes of such provisions at any time, each
    outstanding share of Series B Preferred Stock shall count as such number of
    shares of Common Stock into which such share of Series B Preferred Stock is
    then convertible pursuant to Sections 5 and 7 hereof (subject to the
    percentage

                                       15
<PAGE>

    limitation set forth in Section 10(a) hereof as such percentage
    limitation would otherwise apply pursuant to such Section).
    

    (c)  Immediately following the initial issuance of shares of Series B
Preferred Stock, the Board of Directors shall appoint the following committees
of the Board of Directors with the respective duties, membership and voting
requirements stated below.  After such appointment and until a Type B Event
Date, the following matters shall be deemed approved by the Board of Directors
only upon receiving the affirmative vote of a majority of the Board of Directors
and a majority of the directors elected by the holders of the Series B Preferred
Stock and the Series C Preferred Stock: (A) a decision to eliminate or discharge
the Audit Committee, Compensation Committee, Executive Committee or the
Acquisitions Committee, as described more fully below (such committees are the
"Committees"), (B) a decision to reduce, narrow, attenuate or otherwise weaken
the delegation of powers by the Board of Directors to any of the Committees,
unless such reduction, narrowing, attenuation or other weakening is the transfer
of delegated powers from the Compensation Committee or the Acquisitions
Committee to the Executive Committee, (C) a decision to change the number of
members of any Committee, the identity of the persons or entities entitled to
select each of the members of any Committee, the size of the required vote for
approval by any Committee and the size of the required vote of the Board of
Directors necessary to approve actions that failed to obtain the required
approval vote on the appropriate Committee; and (D) a decision to create any new
committee.  If the holders of the Series B Preferred Stock shall cease to have
the right to nominate and elect any director at all, otherwise than as a result
of the conversion of their shares of Series B Preferred Stock in a Type B
Conversion, then such holders shall no longer have the right to select any
member of any of the committees set forth below and the member or members of
such committees selected by such holders shall automatically cease to be a
member or members of such committees.
    
        (1)  COMPENSATION COMMITTEE.  The Compensation Committee shall
    consist of three (3) members, at least one (1) of whom shall be
    selected jointly by the Series B Directors and director elected by
    holders of the Series C Preferred Stock (the "SERIES C DIRECTOR"), and
    who shall be a director.  An affirmative vote of at least two (2)
    members of the Compensation Committee shall be required for approval
    of matters considered by the Compensation Committee.  The Compensation
    Committee shall ensure that the representative on the Compensation
    Committee nominated by the Series B Directors and the Series C
    Director receive adequate notice of and an opportunity to participate
    in any meetings of the Compensation Committee;
 
        (2)  AUDIT COMMITTEE.  The Audit Committee shall consist of three
    (3) directors, including as many Independent directors as are
    available, not to exceed three (3).  An affirmative vote of at least
    two (2) members of the Audit Committee shall be required for approval
    of matters considered by the Audit Committee.
  
        (3)  EXECUTIVE COMMITTEE.  The Executive Committee shall consist
    of four (4) members, one (1) of whom shall be selected by the Series B
    Directors (and shall be a Series B Director), one (1) of whom shall be
    the Series C Director

                                        16
<PAGE>
    and two (2) of whom shall be selected by the Board of Directors. The members
    selected by the Series B Directors and the Series C Director may be removed
    only by the Series B Directors and the Series C Director, respectively.
    The Executive Committee shall, in addition to the customary duties of an
    executive committee, have the right to approve any financing activity, 
    including but not limited to the Capital Budget Plan.  An affirmative vote 
    of at least three (3) members of the Executive Committee shall be required
    for approval of any matters considered by the Executive Committee. 
    Each financing activity not approved by the Executive Committee may be
    referred to the Board of Directors for approval, which approval shall
    require a Supermajority Vote; and
         
        (4)  ACQUISITIONS COMMITTEE.  The Acquisitions Committee shall
    consist of four (4) members, one (1) of whom shall be selected by the
    Series B Directors (and shall be a Series B Director), one (1) of whom
    shall be the Series C Director, and two (2) of whom shall be selected
    by the Board of Directors (and shall be directors).  The Acquisitions
    Committee shall have the right to approve any transaction of the types
    described in Section 11(n), (o), (p) and (q) with respect to which
    transaction the aggregate consideration payable in connection with
    such transaction (including, without limitation, cash consideration,
    the fair market value of any securities and the net present value of
    any deferred consideration) is less than $15 million.  A unanimous
    vote of the Acquisitions Committee shall be required for approval of
    any matters considered by the Acquisitions Committee.  Except as
    described in Section 10(d)(5) below, each matter considered but not
    unanimously approved by the Acquisitions Committee may be referred to
    the Board of Directors for approval, which approval shall require a
    majority vote of the Board of Directors.  
        
       (5)  CERTAIN TRANSACTIONS.  The unanimous approval of the
    Acquisitions Committee or the unanimous approval of the Board of
    Directors shall be required before the Company or any of its
    Subsidiaries engage in a transaction of the types described in Section
    11(n), (o) (which, only for purposes of this clause, shall also apply
    to Capital Expenditures made by the Company in the ordinary course of
    business), (p) and (q), in which transaction: (A) the aggregate
    consideration payable in connection with such transaction (including,
    without limitation, cash consideration, the fair market value of any
    securities and the net present value of any deferred consideration) is
    less than $15 million; and (B) the Company is to issue its Common
    Equity at an implicit or explicit price of less than $8.375 per share. 
    Such implicit price shall be determined in an appraisal approved
    unanimously by the Acquisitions Committee or unanimously by the Board
    of Directors, such appraisal to be performed by an independent
    appraiser selected unanimously by the Acquisitions Committee or
    unanimously by the Board of Directors.
    
    (d)  Prior to a Type B Event Date, the following matters shall be deemed
approved by the Board of Directors only upon a Supermajority Vote in respect of
any such matter:

                                       17
<PAGE>
         (1)  Approving the annual Capital Budget Plan; and
      
         (2)  Approving the Company entering into any financing activity
    not approved by the Executive Committee.
    
    (e)  The bylaws of the Company may be altered, amended, or repealed or new
bylaws may be adopted by the stockholders or by the Board of Directors at any
regular or special meeting of the stockholders or the Board of Directors, but
only if such alteration, amendment, repeal, or adoption has been approved: 
    
         (1) in case of adoption by the Board of Directors prior to the First
    Meeting following a Type B Event Date, by a majority of the Preferred Stock
    Directors and either (A) a majority of the entire Board of Directors (if
    such alteration, amendment, repeal, or adoption does not increase the
    number of directors) or (B) by at least 80% of the members of the entire
    Board of Directors (if such alteration, amendment, repeal, or adoption does
    increase the number of directors); 
     
         (2) in case of adoption by the stockholders at any meeting of
    stockholders (other than the First Meeting following a Type B Event Date)
    with a record date on or prior to a Type B Event Date, by holders of at
    least eighty percent (80%) of the outstanding shares of the Corporation
    entitled to vote in the election of directors, voting as one class, and by
    holders of a majority of the shares, outstanding as of such record date, of
    whichever (or both) of Series B Preferred Stock and Series C Preferred
    Stock continued (as of such record date) to have the right under the
    certificate of incorporation to elect one or more Preferred Stock
    Directors.
    
    (f)  If a Type B Event Date occurs prior to October 14, 1999, then the
following provisions shall apply:
    
         (1)  From such Type B Event Date until the second subsequent annual
    stockholders meeting of the Company after such Type B Event Date, none of
    the following actions or transactions shall be effected by the Company or
    approved by the Company as a stockholder of any Subsidiary of the Company,
    and neither the Initial Purchaser nor any Initial Purchaser Affiliates
    shall engage in, or be a party to, any of the following actions or
    transactions involving the Company or any Subsidiary of the Company, if, as
    of the record date for the determination of the stockholders entitled to
    vote thereon, or consent thereto, any other Person which obtained its
    equity interest in the Company as a result of a transfer of securities from
    the Initial Purchaser or any Initial Purchaser Affiliate beneficially owns
    or controls, directly or indirectly, five percent (5%) or more of the
    outstanding shares of the Company entitled to vote:
    
              (A)  any merger or consolidation of the Company or any of its
         Subsidiaries with or into such other Person;
     
                                       18
<PAGE>

              (B)  any sale, lease, exchange or other disposition of all or any
         substantial part of the assets of the Company or any of its
         Subsidiaries to such other Person;

              (C)  the issuance or delivery of any voting securities of the
         Company or any of its Subsidiaries to such other Person in exchange
         for cash, other assets or securities, or a combination thereof; or

              (D)  any dissolution or liquidation of the Company;

    PROVIDED, HOWEVER, that such prohibition shall not apply with respect to
    any such action or transaction approved by (I) the affirmative vote of not
    less than eighty percent (80%) of the outstanding shares of the Company
    entitled to vote or (II) at least two-thirds (2/3) of the directors of the
    Company (which must include either (i) the Joint Director, if either (x)
    such Joint Director served in such position as of the Type B Event Date, or
    (y) such Joint Director has been approved by a majority of the directors
    who were Common Stock Directors as of the Type B Event Date, or (ii) at
    least one director who was a Common Stock Director prior to the Type B
    Event Date, unless neither the Joint Director, nor any of such Common Stock
    Directors continue to serve on the Board of Directors at such time).  For
    purposes of this Section 10(f), a Person shall be deemed to own or control,
    directly or indirectly, any outstanding shares of stock of the Company (A)
    which it has the right to acquire pursuant to any agreement, or upon the
    exercise of conversion rights, warrants or options, or otherwise, or (B)
    which are beneficially owned, directly or indirectly (including shares
    deemed owned through application of clause (A) above), by any other
    corporation, person or other entity (x) with which it or its "affiliate" or
    "associate" (as defined below) has any agreement, arrangement, or
    understanding for the purpose of acquiring, holding, voting or disposing of
    stock of the Company or (y) which is its "affiliate" or "associate," as
    those terms are defined under the Securities Exchange Act of 1934, as
    amended, and the rules and regulations promulgated thereunder.

         (2)  No transfer of Series C Preferred Stock may be made by the
    Initial Purchaser or any Initial Purchaser Affiliate (other than a transfer
    permitted under Rule 144 under the Securities Act or a transfer pursuant to
    a registered offering under registration rights from the Company) unless
    prior thereto, the transferee in such transfer shall have agreed to be
    bound by the terms of Section 10(f)(1).

SECTION 11.   PROTECTIVE PROVISIONS.

    Without limiting the provisions of any other Series of Preferred Stock, for
so long as the Initial Purchaser and the Initial Purchaser Affiliates, taken as
a whole, owns or own at least 33% in total liquidation preference, taken as a
whole, of the outstanding shares of Series B Preferred Stock, the Company shall
not take, and shall cause its Subsidiaries not to take, any of the following
actions without the affirmative vote of holders of at least sixty-seven percent
(67%) of the shares of the Series B Preferred Stock then outstanding:

                                       19
<PAGE>

    (a)  alter, change or amend (by merger or otherwise) any of (i) the rights,
preferences and privileges of the Series B Preferred Stock or any other class of
Capital Stock, or (ii) the terms or provisions of any Option or Convertible
Security;

    (b)  enter into any transaction or event that could result in a Special
Corporate Event with respect to the Company or any Subsidiary;

    (c)  initiate any Liquidating Event with respect to the Company or any
Subsidiary;

    (d)  amend, restate, alter, modify or repeal (by merger or otherwise) the
Certificate of Incorporation or the Amended Bylaws of the Company, including,
without limitation, amendment, restating, modifying or repealing (by merger or
otherwise) any certificate of designation or preferences (as in effect from time
to time) relating to the Series A Preferred Stock, the Series B Preferred Stock,
the Series C Preferred Stock or the Series D Preferred Stock, including, without
limitation, the filing by the Company of a certificate with the Secretary of
State of the State of Delaware, pursuant to Section 151(g) of the Delaware
General Corporation Law, setting forth a resolution or resolutions adopted by
the Board of Directors of the Company that none of the authorized shares of
Series D Preferred Stock are outstanding and that none will be issued subject to
the Series D Certificate of Designation;

    (e)  amend, restate, alter, modify or repeal (by merger or otherwise) or
permit any Subsidiary to amend, restate, alter, modify or repeal (by merger or
otherwise) the certificate of incorporation, other organizational documents, or
bylaws of any Subsidiary in any material respect;

    (f)  change the number of directors of the Company to a number less than
eight (8) or more than nine (9) or the manner in which the directors are
selected, as provided in the Certificate of Incorporation, Amended Bylaws,
Series B Preferred Stock Certificate of Designation, Series C Preferred Stock
Certificate of Designation and Series D Preferred Stock Certificate of
Designation;

    (g)  incur any Indebtedness, in the aggregate with respect to the Company
and its Subsidiaries, in excess of $15 million in any Fiscal Year; PROVIDED,
HOWEVER, that this provision shall not apply to draw-downs under any credit
facility as to which a credit agreement had been executed and delivered on or
prior to the Initial Issue Date;

    (h)  become a party to Operating Leases during any Fiscal Year with respect
to which the present value of all payments due during the term of such Operating
Leases in the aggregate (determined using a discount rate of 10%) exceed $15
million; 

    (i)  create, authorize or issue any shares of Series B Preferred Stock or
any class or series of Senior Securities, Parity Securities or Supervoting
Securities or shares of any such class or series;

                                        20
<PAGE>

    (j)  reclassify any authorized stock of the Company into Series B Preferred
Stock or any class or series of Senior Securities, Parity Securities,
Supervoting Securities or shares of such class or series;

    (k)  increase or decrease the authorized number of shares of Series B
Preferred Stock or any class or series of Senior Securities or Parity Securities
or shares of any such class or series;

    (l)  issue any equity security below either the then current Market Price
(without deduction for any underwriters' discount) or the then-applicable
Conversion Price other than for (A) management stock options currently
authorized and available for grant for not more than Three Hundred Thousand
(300,000) shares of Common Stock in the aggregate, in which senior management of
the Company shall not participate, (B) management stock options exercisable at
not less than the then-applicable Conversion Price per share of Common Stock
issued after October 14, 1997, exercisable for not more than Five Hundred
Thousand (500,000) shares of Common Stock in the aggregate, in which only
certain members of senior management of the Company shall participate, and
(C) the Common Stock underlying such management stock options and other stock
options outstanding as of October 14, 1997; 

    (m)  declare or pay any dividend or make any distribution (including
without limitation by way of redemption, purchase or other acquisition) with
respect to shares of Capital Stock or any securities convertible into, or
exercisable, redeemable or exchangeable for, any share of Capital Stock
(including without limitation any Option or Convertible Security) directly or
indirectly, whether in cash, obligations or shares of the Company or other
property;

    (n)  acquire, in one or a series of related transactions, any equity
ownership interest or interests of any Person, where the aggregate consideration
payable in connection with such acquisition (including without limitation cash
consideration, the fair market value of any securities and the net present value
of any deferred consideration) is equal to or greater than $15 million;

    (o)  acquire any asset or assets of any Person in any transaction or
transactions, where the aggregate consideration payable in connection with any
single such transaction (including, without limitation, cash consideration, the
fair market value of any securities and the net present value of any deferred
consideration), whether such transaction is effected in a single transaction or
series of related transactions, is greater than $15 million; PROVIDED, HOWEVER,
that this provision shall not apply to Capital Expenditures made by the Company
in the Ordinary Course of Business;

    (p)  merge or consolidate with any Person, or permit any other Person to
merge into it, where (i) the stockholders of the Company immediately prior to
the consummation of such merger or consolidation shall, immediately after the
consummation of such merger or consolidation, hold securities possessing more
than 50% of both the total voting power of and the beneficial ownership
interests in the surviving entity of such merger or consolidation and (ii) the
equity holders of the subject Person immediately prior to the consummation of
such transaction shall receive (directly or indirectly) aggregate consideration
payable in connection with such

                                       21
<PAGE>

transaction (including without limitation cash consideration, the fair market
value of any securities and the net present value of any deferred consideration)
equal to or greater than $15 million, 

    (q)  cause or permit any Subsidiary to merge or consolidate with any Person
(other than the Company or a wholly-owned Subsidiary of the Company), or cause
or permit any other Person to merge into it, where: (i) the stockholders of such
Subsidiary immediately prior to the consummation of such merger or consolidation
shall, immediately after the consummation of such merger or consolidation, hold
securities possessing more than 50% of both the total voting power of and the
beneficial ownership interests in the surviving entity of such merger or
consolidation and (ii) the equity holders of the subject Person immediately
prior to the consummation of such transaction shall receive (directly or
indirectly) aggregate consideration payable in connection with such transaction
(including without limitation cash consideration, the fair market value of any
securities and the net present value of any deferred consideration) equal to or
greater than $15 million;

    (r)  substantially and materially engage in, either through acquisition or
internal development, any business other than the business of providing
diagnostic services to the healthcare industry;

    (s)  make or permit any of its Subsidiaries to make Capital Expenditures
any fiscal year in excess, in the aggregate, of two percent (2%) above the
approved Capital Budget Plan for such fiscal year of the Company unless such
expenditure is approved by the Executive Committee of the Board of Directors or
a Supermajority Vote of the Board of Directors of the Company; 

    (t)  (i) sell, transfer, convey, lease or dispose of, outside the Ordinary
Course of Business, any assets or properties of the Company or any Subsidiary,
whether now or hereafter acquired, in any transaction or transactions, if (X)
the aggregate consideration payable in connection with any single such
transaction (including, without limitation, cash consideration, the fair market
value of any securities and the net present value of any deferred
consideration), is greater than $5 million or (Y) the aggregate consideration
payable in connection with all such transactions (including, without limitation,
cash consideration, the fair market value of any securities and the net present
value of any deferred consideration), consummated after the Initial Issue Date,
taken as a whole, is or would become as a result of such transaction greater
than $20 million; (ii) undergo or cause or permit any Subsidiary to undergo a
reorganization or recapitalization; (iii) merge or consolidate with any Person,
or permit any other Person to merge into it, where the stockholders of the
Company immediately prior to the consummation of such merger or consolidation
shall, immediately after the consummation of such merger or consolidation, 
hold securities possessing 50% or less of either the total voting power of or 
the beneficial ownership interests in the surviving entity of such merger or 
consolidation; (iv) cause or permit any Subsidiary to merge or consolidate 
with any other Person (other than the Company or a wholly-owned Subsidiary of 
the Company), or cause or permit any other Person to merge into such 
Subsidiary, where the stockholders of such Subsidiary immediately prior to 
the consummation of such merger or consolidation shall, immediately after the 
consummation of

                                       22
<PAGE>

such merger or consolidation, hold 50% or less of either the total voting 
power of or the beneficial ownership interests in the surviving entity of such
merger or consolidation if (X) the value of the assets of such Subsidiary is 
greater than $5 million or (Y) the aggregate value of the assets of all such
Subsidiaries with respect to all such mergers or consolidations consummated
after the Initial Issue Date, taken as a whole and including such transaction,
is or would become as a result of such transaction greater than $20 million; 

    (u)  permit any Subsidiary of the Company to issue or sell any share of
Capital Stock, Option or Convertible Security; PROVIDED, HOWEVER, that the
Company may form a new Subsidiary not all of the equity securities of which need
be owned directly or indirectly by the Company (a "PARTIAL SUBSIDIARY"), but
only if (i) at the time of creation of such Partial Subsidiary, such Partial
Subsidiary is designated as such in a written notice to the holders of the
shares of Series B Preferred Stock, and, (ii) cumulatively through time no more
than $5,000 of assets (in the aggregate) are transferred to such Partial
Subsidiary by the Company or any other Subsidiary, and (iii) no liabilities of
such Partial Subsidiary are ever assumed or guaranteed by the Company or any
other Subsidiary; or

    (v)  issue any share of Series D Preferred Stock, otherwise than pursuant
to a Type B Conversion.

    The rights provided to holders of shares of Series B Preferred Stock in
this Section 11 shall be in addition to and not in lieu of the other rights and
protections granted to the holders of the shares of Series B Preferred Stock
hereunder.

         SECTION 12.    REISSUANCE OF SERIES B PREFERRED STOCK.

    Shares of Series B Preferred Stock that have been issued and reacquired or
converted in any manner, including shares purchased, redeemed, exchanged, or
converted into shares of Common Equity, shall (upon compliance with any
applicable provisions of the laws of Delaware) have the status of authorized but
unissued shares of preferred stock of the Company undesignated as to series and
may be designated or redesignated and issued or reissued, as the case may be, as
part of any series of preferred stock of the Company, provided that such shares
may not in any event be reissued as Series B Preferred Stock.

         SECTION 13.    BUSINESS DAY.

         If any payment, redemption or exchange shall be required by the terms
hereof to be made on a day that is not a Business Day, such payment, redemption
or exchange shall be made on the immediately succeeding Business Day.

         SECTION 14.    CERTAIN NOTIFICATION OBLIGATIONS.

    The Company will notify the Initial Purchaser of each subsequent sale or
disposition of any assets or properties of either the Company or any Subsidiary
(other than in the Ordinary Course of Business) once the aggregate consideration
payable in connection with all such sales or dispositions for the Company and
its Subsidiaries outside the Ordinary Course of Business

                                        23
<PAGE>

(including without limitation cash consideration, the fair market value of any
securities and the net present value of any deferred consideration) exceeds
$10,000,000 in any fiscal year.  

    SECTION 15.    PREEMPTIVE RIGHTS

    (a)  Subject to the terms and conditions specified in this Section 15, the
Company hereby grants to each holder of shares of Series B Preferred Stock a
right of first offer with respect to future sales in any transaction or proposed
transaction not involving a public offering by the Company of its shares of
Common Equity or any securities convertible or exchangeable, directly or
indirectly, into Common Equity (collectively, "PREEMPTIVE SECURITIES").  
Preemptive Securities shall include, without limitation, all shares of Common
Stock and all Convertible Securities.  

    (b)  Each time the Company proposes to offer any Preemptive Securities in a
transaction not involving a public offering of such Preemptive Securities, the
Company shall first make an offering of such Preemptive Securities to each
holder of shares of Series B Preferred Stock in accordance with the following
provisions:

         (1)  The Company shall deliver a notice by certified mail (the
    "PREEMPTIVE NOTICE") to each holder of shares of Series B Preferred Stock
    stating (i) its bona fide intention to offer Preemptive Securities, (ii)
    the number of such Preemptive Securities to be offered, and (iii) the price
    and terms, if any, upon which it proposes to offer such Preemptive
    Securities.  In addition, the Preemptive Notice will contain all other
    information which would be provided to prospective purchasers with respect
    to the proposed offering.

         (2)  With respect to any Type A Offering of Preemptive Securities, by
    written notification given by each holder of shares of Series B Preferred
    Stock within 15 Business Days from the date of the Preemptive Notice, each
    holder may elect to purchase or obtain, at the price and on the terms
    specified in the Preemptive Notice, up to that portion of such Preemptive
    Securities which equals the proportion that the number of shares of Common
    Stock issuable upon conversion of the shares of Series B Preferred Stock
    then held by such holder bears to the total number of shares of Common
    Stock of the Company then outstanding (assuming full conversion of all
    convertible securities, including without limitation the Series A Preferred
    Stock, Series B Preferred Stock, Series C Preferred Stock and Series D
    Preferred Stock). 

         (3)  With respect to any Type B Offering of Preemptive Securities, by
    written notification given by each holder of shares of Series B Preferred
    Stock within 15 Business Days from the date of the Preemptive Notice, each
    holder may elect to purchase or obtain, at the price and on the terms
    specified in the Preemptive Notice, up to that portion of such Preemptive
    Securities which equals the proportion that the number of shares of Common
    Stock issuable upon conversion of the shares of Series B Preferred Stock
    then held by such holder bears to the number of shares of Common Stock of
    the Company into which the outstanding shares of Series B Preferred Stock
    and the outstanding shares of Series B Preferred Stock are then
    convertible.  

                                        24
<PAGE>

         (4)  If any of the holders of Series B Preferred Stock decline to
    exercise any right of refusal with respect to any offering to such holders
    of Series B Preferred Stock of any Preemptive Securities, such holders (the
    "DECLINING SERIES B HOLDERS") shall give written notification of such
    election to decline to exercise such rights to the Company within 15
    Business Days from the date of the Preemptive Notice.  Within 3 Business
    Days thereafter, the Company shall give written notification (the "DECLINED
    PREEMPTIVE SECURITIES NOTICE") to each holder of Series B Preferred Stock
    of the following: (i) the total number of shares of Preemptive Securities
    which the Declining Series B Holders declined to purchase (collectively,
    the "DECLINED PREEMPTIVE SECURITIES"), and (ii) the price and terms
    specified in the Preemptive Notice relating to such Declined Preemptive
    Securities.

         (5)  By written notification given by each holder of shares of Series
    B Preferred Stock within 3 Business Days from the date of the Declined
    Preemptive Securities Notice, each holder of Series B Preferred Stock may
    elect to purchase or obtain, at the price and on the terms specified by the
    Company for such sale of such Preemptive Securities, such Declined
    Preemptive Securities at the price and on the terms specified in the
    Preemptive Notice; PROVIDED, HOWEVER, that if the total number of Declined
    Preemptive Securities so elected to be purchased by such holders of Series
    B Preferred Stock pursuant hereto (collectively, the "ELECTING HOLDERS")
    exceeds the total number of Declined Preemptive Securities, each such
    Electing Holder shall purchase, and the Company shall sell to such Electing
    Holder, that portion of the total number of Declined Preemptive Securities
    which equals the proportion that the number of shares of Common Stock
    issuable upon conversion of the shares of Series B Preferred Stock then
    held by such holder bears to the number of shares of Common Stock of the
    Company into which the outstanding shares of all Electing Holders are then
    convertible.  

         (6)  If all Preemptive Securities referred to in any Preemptive Notice
    are not elected to be obtained as provided in Section 15(b)(2) or 15(b)(3),
    or Section 15(b)(4) or 15(b)(5), as applicable, the Company may, at any
    time after the latest date set forth above for the exercise of the right to
    purchase any such Preemptive Securities by any holder of Series B Preferred
    Stock (the "PREEMPTIVE RIGHT EXPIRATION DATE") to the date sixty (60) days
    from the Preemptive Right Expiration Date offer the remaining unsubscribed
    portion of such Preemptive Securities to any Person or Persons at a price
    equal to the price specified in the relevant Preemptive Notice.  If the
    Company does not enter into an agreement for the sale of the Preemptive
    Securities within sixty (60) days after the Preemptive Right Expiration
    Date, or if such agreement is not consummated within ninety (90) days of
    the Preemptive Right Expiration Date, the right provided under this Section
    15 shall be deemed to be revived and such Preemptive Securities shall not
    be offered unless first reoffered to each holder of shares of Series B
    Preferred Stock in accordance herewith.

         (7)  The rights set forth in this Section 15 shall not be applicable
    to the issuance or sale of shares of Common Stock pursuant to Options
    approved by the Board

                                       25
<PAGE>

    to officers, directors and employees of the Company for the primary
    purpose of soliciting or retaining their employment or services.

    SECTION 16.    DEFINITIONS.

    As used in this Certificate, the following terms shall have the following
meanings (with terms defined in the singular having comparable meanings when
used in the plural and vice versa), unless the context otherwise requires:
    
    "AFFILIATE" of any specified Person means any other Person directly or
indirectly controlling or controlled by or under direct or indirect common
control with such specified Person.  For purposes of this definition, "control"
(including, with correlative meanings, the terms "controlling," "controlled by"
and "under common control with"), as used with respect to any Person, shall mean
the possession, directly or indirectly, of the power to direct or cause the
direction of the management or policies of such Person, whether through the
ownership of voting securities, by agreement or otherwise; provided that
beneficial ownership of a majority or more of the voting securities of a Person
shall be deemed to be control.

    "AMENDED BYLAWS" means the Amended and Restated Bylaws of the Company, as
in effect from time to time.

    "AGGREGATE VOTING LIMITATION" has the meaning set forth in Section 10(a).

    "BOARD" or "BOARD OF DIRECTORS" means the Board of Directors of the
Company.

    "BUSINESS DAY" means any day other than a Legal Holiday.

    "CAPITAL BUDGET PLAN" means, for each fiscal year of the Company, the plan
of the Company for making Capital Expenditures for such fiscal year which has
been approved for such fiscal year by either the Executive Committee or a
Supermajority Vote of the Board of Directors of the Company.

    "CAPITAL EXPENDITURES" means, for any period, expenditures made by the
Company or any of its Subsidiaries to acquire or construct fixed assets, plant
and Fixtures and Equipment (including additions, improvements, upgrades and
replacements, but excluding repairs) during such period calculated in accordance
with GAAP.

    "CAPITAL LEASE OBLIGATION" means, at the time any determination thereof is
to be made, the amount of the liability in respect of a lease that would at such
time be required to be capitalized on a balance sheet in accordance with GAAP.

    "CAPITAL STOCK" means (i) in the case of a corporation, corporate stock,
(ii) in the case of an association or business entity, any and all shares,
interests, participations, rights or other equivalents (however designated) of
corporate stock, (iii) in the case of a partnership, partnership interests
(whether general or limited) and (iv) any other interest or participation that
confers on a

                                  26
<PAGE>

Person the right to receive a share of the profits and losses of,
or distributions of assets of, the issuing Person.

    "CERTIFICATE OF INCORPORATION" means the certificate of incorporation (as
defined in Section 104 of the Delaware General Corporation Law) of the Company
in effect on the date hereof, including, without limitation, the Series A,
Series B, Series C and the Series D Certificates of Designation.

    "CHANGE OF CONTROL" with respect to a Person shall be deemed to have
occurred (i) at such time as any person (as defined in Section 13(d)(3) of the
Securities and Exchange Act of 1934) at any time shall directly or indirectly
acquire more than 40% in outstanding voting power of such Person, (ii) at such
time as during any one year period, individuals who at the beginning of such
period constitute such Person's Board of Directors or other governing body cease
to constitute at least a majority of such board or governing body (provided,
however, that a change in directors upon a Type B Event Date shall not be deemed
to cause a Change in Control pursuant to this clause (ii)), (iii) upon
consummation of a merger or consolidation of such Person into or with another
Person in which the shareholders of the subject Person immediately prior to the
consummation of such transaction shall own less than Fifty Percent (50%) of the
voting securities of the surviving Person (or the parent corporation of the
surviving Person where the surviving Person is wholly-owned by the parent
corporation) immediately following the consummation of such transaction or (iv)
the sale, transfer or lease of all or substantially all of the assets of such
Person, in any of cases (i), (ii), (iii) or (iv) in a single transaction or
series of related transactions; PROVIDED, that no Change of Control hereunder
with respect to the Company shall be deemed to occur solely by reason of (x) the
ownership by the Initial Purchaser or any Affiliate thereof or the Majority
Holders of the Series C Preferred Stock or any Affiliate thereof of any Capital
Stock of the Company or (y) the conversion of shares of Series C Preferred Stock
into either Series D Preferred Stock (and any change in the Board of Directors
incident thereto) or Common Stock, or (z) the conversion of shares of Series D
Preferred Stock into Common Stock. 

    "COMMITTEES" has the meaning set forth in Section 10(e).

    "COMMON EQUITY" means all shares now or hereafter authorized of any class
of common stock of the Company (including the Common Stock) and any other stock
of the Company, however designated, authorized after the date hereof, which has
the right (subject always to prior rights of any class or series of preferred
stock) to participate in any distribution of the assets or earnings of the
Company without limit as to per share amount.

    "COMMON STOCK" has the meaning set forth in Section 3(a). 

    "COMMON STOCK DIRECTOR" means, for any period prior to any Type B Event
Date, any director other than the Joint Director or a director elected by the
holders of the Series B Preferred Stock or the Series C Preferred Stock.

    "COMPANY" means InSight Health Services Corp., a Delaware corporation.

                                          27
<PAGE>

    "CONVERSION DATE" means (i) in the event of a Type A Conversion, the date
set forth in Section 5(a) (in the event of a partial conversion relating to a
Partial Conversion Event) or Section 5(b) (in the event of any other conversion
pursuant to Section 5), and (ii) in the event of a Type B Conversion, the date
of receipt by the Company of the relevant Type B Conversion Notice.

    "CONVERSION DIRECTORS" has the meaning set forth in Section 10.

    "CONVERSION PRICE" has the meaning set forth in Section 8.

    "CONVERTIBLE SECURITY" means any stock or securities, directly or
indirectly, convertible into or exchangeable for Common Equity, including
without limitation any exchangeable debt securities.

    "CORPORATE CHANGE" has the meaning set forth in Section 8(e).

    "CREDIT FACILITY" means a credit facility to which the Company is a party
with NationsBank, N.A.

    "DECLINED PREEMPTIVE SECURITIES" has the meaning set forth in Section
15(b)(4).

    "DECLINED PREEMPTIVE SECURITIES NOTICE" has the meaning set forth in
Section 15(b)(4).

    "DECLINING SERIES B HOLDERS" has the meaning set forth in Section 15(b)(4).

    "ELECTING HOLDERS" has the meaning set forth in Section 15(b)(5).

    "ENCUMBRANCE" means any claim, lien, pledge, option, charge, easement,
security interest, right-of-way, encumbrance or other right of third parties,
and, with respect to any securities, any agreements, understandings or
restrictions affecting the voting rights or other incidents of record or
beneficial ownership pertaining to such securities.

    "FIRST MEETING" means the meeting of the newly constituted Board of
Directors to be held two calendar days after a Type B Event Date, at the
principal offices of the Corporation.

    "FISCAL YEAR" means each year ending June 30, or any other fiscal year as
approved by the Board of Directors.

    "FIXTURES AND EQUIPMENT" means all of the furniture, fixtures, furnishings,
machinery, equipment and other tangible assets owned by the Company or any
Subsidiary that are material to the conduct of their businesses as currently
conducted.

    "GAAP" means generally accepted accounting principles set forth in the
opinions and pronouncements of the Accounting Principles Board of the American
Institute of Certified Public Accountants and statements and pronouncements of
the Financial Accounting Standards Board or in such other statements by such
other entity as have been approved by a significant segment of the accounting
profession, which are in effect as of the Initial Issue Date.

                                        28
<PAGE>

    "INDEBTEDNESS" means, as to any Person without duplication, (a) all items
which, in accordance with GAAP, would be included as a liability on the balance
sheet of such Person and its Subsidiaries (including any obligation of such
Person to the issuer of any letter of credit for reimbursement in respect of any
drafts drawn under such letter of credit), excluding obligations in respect of
deferred taxes and deferred employee compensation and benefits, and anything in
the nature of capital stock, surplus capital and retained earnings; (b) the
amount available for drawing under all letters of credit issued for the account
of such Person; (c) Capital Lease Obligations of such Person; and (d) all
obligations of other Persons that such Person has guaranteed, including, without
limitation, all obligations of such Person consisting of recourse liabilities
with respect to accounts receivable sold or otherwise disposed of by such
Person; provided, however, that the term Indebtedness shall not include trade
accounts payable (other than for borrowed money) arising in, and accrued
expenses incurred in, the ordinary course of business of such Person, provided
the same are not more than sixty (60) days overdue or are being contested in
good faith.

    "INDEPENDENT" means any Person who is not an officer or employee of the
Company or any Subsidiary or other Affiliate of the Company or otherwise paid
any compensation or remuneration by the Company or any Subsidiary or other
Affiliate of the Company other than director's fees.

    "INITIAL ISSUE DATE" means October 14, 1997.

    "INITIAL PURCHASER" shall mean the Persons to whom shares of Series B
Preferred Stock are initially issued by the Company.

    "INITIAL PURCHASER AFFILIATE" means the Initial Purchaser, the general
partner of any Initial Purchaser, and any investor in any Initial Purchaser or
in the general partner of any Initial Purchaser, in any case, as of the date
hereof.

    "JOINT DIRECTOR" has the meaning set forth in Section 10(b)(4).

    "JUNIOR SECURITIES" has the meaning set forth in Section 2.

    "LEGAL HOLIDAY" means a Saturday, a Sunday or a day on which banking
institutions in the Company's principal place of business, the City of New York
or at a place of payment are authorized by law, regulation or executive order to
remain closed.  If a payment date is a Legal Holiday at a place of payment,
payment may be made at that place on the next succeeding day that is not a Legal
Holiday, and no interest shall accrue for the intervening period.

    "LIEN" means any lien, mortgage, deed of trust, pledge, security interest,
charge or encumbrance of any kind (including any conditional sale or other title
retention agreement, any lease in the nature thereof and any agreement to give
any security interest).

    "LIQUIDATING DIVIDEND" has the meaning set forth in Section 8(g).

    "LIQUIDATING EVENT" has the meaning set forth in Section 4(b).

                                       29
<PAGE>

    "LIQUIDATION PREFERENCE" has the meaning set forth in Section 4(a).

    "MAJORITY HOLDERS," at any time, and with respect to any class or series of
Capital Stock of the Company, means holders of a majority of the shares of such
class or series then outstanding.  If the term is used without reference to a
particular class or series of Capital Stock of the Company, it means Majority
Holders of the Series B Preferred Stock.

    "MARKET PRICE" means as to any security the average of the closing prices
of any such security's sales on all domestic securities exchanges on which such
security may at the time be listed, or, if there have been no sales on any such
exchange on any day, the average of the highest bid and lowest asked prices on
all such exchanges at the end of such day, or, if on any day such security is
not so listed, the average of the representative bid and asked prices quoted in
Nasdaq as of 4:00 P.M., New York time, on such day, or, if on any day such
security is not quoted in Nasdaq, the average of the highest bid and lowest
asked prices on such day in the domestic over-the-counter market as reported by
the National Quotation Bureau, Incorporated, or any similar successor
organization, in each such case averaged over a period of twenty-one (21)
Business Days consisting of the day as of which "Market Price" is being
determined and the twenty (20) consecutive Business Days prior to such day;
provided that if such security is listed on any domestic securities exchange the
term "Business Days" as used in this sentence means business days on which such
exchange is open for trading.  If at any time such security is not listed on any
domestic securities exchange or quoted in Nasdaq or the domestic over-the-
counter market, the "Market Price" shall be the fair value thereof determined by
the Company and approved by the Majority Holders; provided that if such parties
are unable to reach agreement within a reasonable period of time, such fair
value shall be determined by an appraiser jointly selected by the Company and
the Majority Holders.  The determination of such appraiser shall be final and
binding on the Company and holders of the shares of Series B Preferred Stock,
and the fees and expenses of such appraiser shall be paid by the Company.

    "OPERATING LEASE" shall mean any lease with respect to which the
obligations of the lessee thereunder are, at the time any determination thereof
is to be made, not required to be capitalized on the lessee's balance sheet in
accordance with GAAP.

    "OPTION" shall mean any rights or options to subscribe for or purchase
Common Equity or Convertible Securities.

    "ORDINARY COURSE OF BUSINESS" shall mean the ordinary course of business
for a company engaged in the business of providing diagnostic services to the
healthcare industry as so provided by the Company as of the Initial Issue Date;
provided, that all sales by the Company or any Subsidiary, as the case may be,
of inventory and sales of Fixtures and Equipment no longer used or useful in
such business shall be deemed to be in the Ordinary Course of Business.

    "PARITY SECURITIES" has the meaning set forth in Section 2.

    "PARTIAL CONVERSION EVENT" means (i) the consummation of the sale by any
holder of its shares of Series B Preferred Stock to a third party at any time
approved by the Board, (ii) the

                                       30
<PAGE>

consummation of a public offering of the Common Stock at any time and
(iii) at any time following April 14, 1999, the consummation of a private
sale of Common Stock.

    "PARTIAL SUBSIDIARY" has the meaning set forth in Section 11(u).

    "PERSON" means any individual, corporation, partnership, joint venture,
association, limited liability company, joint-stock company, trust,
unincorporated organization or government or agency or political subdivision
thereof (including any subdivision or ongoing business of any such entity or
substantially all of the assets of any such entity, subdivision or business).

    "PREEMPTIVE NOTICE" has the meaning set forth in Section 15(b).

    "PREEMPTIVE RIGHT EXPIRATION DATE" has the meaning set forth in Section
15(b)(6).

    "PREEMPTIVE SECURITIES" has the meaning set forth in Section 15(a).

    "PREFERRED STOCK DIRECTORS" means the Series B Directors and the Series C
Director.

    "SECURITIES PURCHASE AGREEMENT" means the Securities Purchase Agreement
dated as of October 14, 1997 between the Company and the Initial Purchaser.

    "SENIOR SECURITIES" has the meaning set forth in Section 2.

    "SERIES A PREFERRED STOCK" has the meaning set forth in Section 2.

    "SERIES B DIRECTOR" has the meaning set forth in Section 10.

    "SERIES B PREFERRED STOCK" has the meaning set forth in Section 1.

    "SERIES C DIRECTOR" has the meaning set forth in Section 10.

    "SERIES C PREFERRED STOCK" has the meaning set forth in Section 2.

    "SERIES D PREFERRED STOCK" has the meaning set forth in Section 2.

    "SPECIAL CORPORATE EVENT" with respect to a Person shall be deemed to have
occurred (i) at such time as any person (as defined in Section 13(d)(3) of the
Securities and Exchange Act of 1934) at any time shall directly or indirectly
acquire more than 20% in outstanding voting power of such Person, (ii) at such
time as during any one year period, individuals who at the beginning of such
period constitute such Person's Board of Directors or other governing body cease
to constitute at least a majority of such board or governing body (provided,
however, that a change in directors upon a Type B Event Date shall not be deemed
to cause a Special Corporate Event pursuant to this clause (ii)), (iii) upon
consummation of a merger or consolidation of such Person into or with another
Person in which the shareholders of the subject Person immediately prior to the
consummation of such transaction shall own less than Fifty Percent (50%) of the
voting securities of the surviving Person (or the parent corporation of the
surviving Person where the surviving Person is wholly-owned by the parent
corporation) immediately following the


                                       31
<PAGE>
consummation of such transaction or (iv) the sale, transfer or lease of all or
substantially all of the assets of such Person, in any of cases (i), (ii), (iii)
or (iv) in a single transaction or series of related transactions; provided,
that no Special Corporate Event hereunder with respect to the Company shall be
deemed to occur solely by reason of the ownership by the Initial Purchaser or
any Affiliate thereof or the Majority Holders of the Series C Preferred Stock
or any Affiliate thereof of any Capital Stock of the Company. 

    "SUBSIDIARY" means, with respect to any Person, (a) any corporation of
which at least a majority in interest of the outstanding voting stock (having by
the terms thereof voting power under ordinary circumstances to elect a majority
of the directors of such corporation, irrespective of whether or not at the time
stock of any other class or classes of such corporation shall have or might have
voting power by reason of the happening of any contingency) is at the time,
directly or indirectly, owned or controlled by such Person, by one or more
Subsidiaries of such Person or by such Person and one or more of its
Subsidiaries, or (b) any corporate or non-corporate entity in which such Person,
one or more Subsidiaries of such Person, or such person and one or more
Subsidiaries of such Person, directly or indirectly, at the date of
determination thereof, has an ownership interest and one hundred percent (100%)
of the revenue of which is included in the consolidated financial reports of
such Person consistent with GAAP.

    "SUPERMAJORITY VOTE" means the affirmative vote of six (6) directors of the
Company with respect to the matter subject to such vote.

    "SUPERVOTING SECURITIES" means any class or series of the Company's Capital
Stock the holders of which have the right to cast more than one vote per share
and/or have the right to elect one or more members of the Board of Directors,
voting as a class or series.

    "TYPE A CONVERSION" means a conversion of shares of Series B Preferred
Stock into shares of Common Stock pursuant to Section 5 hereof.

    "TYPE A OFFERING OF PREEMPTIVE SECURITIES" means any proposed offering by
the Company of Preemptive Securities in which the proposed sale price reflects a
price per share of Common Stock at or above the higher of (i) the Market Price
per share of Common Stock, determined as of the date of the Preemptive Notice
relating to such offering and (ii) $8.375 per share of Common Stock.

    "TYPE B CONVERSION" means a conversion of shares of Series B Preferred
Stock into shares of Series D Preferred Stock pursuant to Section 6 hereof.

    "TYPE B CONVERSION NOTICE" has the meaning set forth in Section 6(b).

    "TYPE B EVENT DATE" has the meaning set forth in Section 6(b).

    "TYPE B OFFERING OF PREEMPTIVE SECURITIES" means any proposed offering by
the Company of Preemptive Securities in which the proposed sale price reflects a
price per share of Common Stock below the higher of (i) the Market Price per
share of Common Stock, determined

                                      32
<PAGE>

as of the date of the Preemptive Notice relating to such offering and (ii)
$8.375 per share of Common Stock.

    "TYPE B TRIGGER DATE" means the date one year after the initial borrowing
of funds under the Credit Facility.

                                      33
<PAGE>

     IN WITNESS WHEREOF, InSight Health Services Corp. has caused this
Certificate to be executed by its Executive Vice President and Secretary this
14th day of October, 1997.

                                      INSIGHT HEALTH SERVICES CORP.


                                      By:  /s/ Thomas V. Croal
                                           ----------------------------------
                                      Name:  Thomas V. Croal
                                      Office:  Executive Vice President
                                                    and Secretary


                                        34

<PAGE>
                                                               Exhibit 6

                            INSIGHT HEALTH SERVICES CORP.

                  CERTIFICATE OF DESIGNATION, PREFERENCES AND RIGHTS
                       OF CONVERTIBLE PREFERRED STOCK, SERIES C

                (Pursuant to Section 151(g) of the General Corporation
                            Law of the State of Delaware.)

    InSight Health Services Corp., a corporation organized and existing under 
the laws of the State of Delaware (hereinafter the "Company"), DOES HEREBY 
CERTIFY THAT, pursuant to authority conferred upon the Board of Directors of 
the Company (the "Board") by the certificate of incorporation of the Company, 
as amended, the Board unanimously adopted the following resolutions on 
October 14, 1997 authorizing the issuance of the Series C Convertible 
Preferred Stock of the Company, which resolutions are still in full force and 
effect and are not in conflict with any provisions of the certificate of 
incorporation or bylaws of the Company: 

    RESOLVED, that pursuant to authority vested in the Board by the 
Certificate of Incorporation, the Board does hereby establish a series of 
preferred stock of the Company from the Company's authorized class of 
3,500,000 shares of $.001 par value preferred shares, such series to consist 
of 27,953 shares, and does hereby fix and state the voting rights, 
designation, powers, preferences and relative participating, optional or 
other special rights and the qualifications, limitations or restrictions 
thereof, as follows:

    SECTION 1.     DESIGNATION.  

    The Preferred Stock created and authorized hereby shall be designated as
the "Convertible Preferred Stock, Series C" (hereinafter called the "SERIES C
PREFERRED STOCK").  The number of shares of Series C Preferred Stock shall be
27,953 and no more.

    SECTION 2.     RANK.

    The Series C Preferred Stock shall, with respect to dividend distributions
and distributions upon the liquidation, winding up and dissolution of the
Company, rank senior to all classes of Common Equity of the Company, and to each
other class or series of Capital Stock of the Company (except for the
Convertible Preferred Stock, Series A (hereinafter called the "SERIES A
PREFERRED STOCK")) the terms of which do not expressly provide that it ranks
senior to or on a parity with the Series C Preferred Stock as to dividend
distributions and distributions upon the liquidation, winding up and dissolution
of the Company (collectively referred to with the Common Equity of the Company
as "JUNIOR SECURITIES").  The Series C Preferred Stock shall, with respect to
dividend distributions and distributions upon the liquidation, winding up and
dissolution of the Company, rank on a parity with any class or series of Capital
Stock hereafter created which expressly provides that it ranks on a parity with
the Series C Preferred Stock as to dividend distributions and distributions upon
the liquidation, winding up and dissolution of the Company (shares of such a
class or series, together with shares of the Series A Preferred Stock, shares of
the Convertible Preferred Stock, Series B (the "SERIES B PREFERRED STOCK"), and
shares

<PAGE>

of the Convertible Preferred Stock, Series D (the "SERIES D PREFERRED STOCK") 
are, collectively, the "Parity Securities"); provided that any purported 
Parity Securities that were not created, authorized or issued in accordance 
with Section 11 hereof shall be deemed to be Junior Securities and not Parity 
Securities.  The Series C Preferred Stock shall, with respect to dividend 
distributions and distributions upon the liquidation, winding up and 
dissolution of the Company, rank junior to each class or series of Capital 
Stock hereafter issued in accordance with Section 11 hereof and which 
expressly provides that it ranks senior to the Series C Preferred Stock as to 
dividend distributions or distributions upon the liquidation, winding up and 
dissolution of the Company ("SENIOR SECURITIES").  Any purported Supervoting 
Securities that were not created, authorized or issued in accordance with 
Section 11 hereof shall be deemed for all purposes related to voting rights 
to be identical to Common Stock, including, without limitation, as to voting 
rights with respect to the election of directors and all other matters 
submitted to a vote of stockholders.

    SECTION 3.     DIVIDENDS.

    (a)  The Company may (when, as and if declared by the Board of Directors 
of the Company) declare and pay dividends, out of the entire assets and funds 
of the Company legally available therefor, to the holders of the Series A 
Preferred Stock, the Series B Preferred Stock, the Series C Preferred Stock, 
the Series D Preferred Stock and the common stock, $.001 par value per share, 
of the Company (the "COMMON STOCK") ratably based on the number of shares of 
Common Stock held by each such Holder (assuming full conversion of all such 
shares of Series A Preferred Stock, Series B Preferred Stock, Series C 
Preferred Stock, and Series D Preferred Stock into Common Stock); PROVIDED, 
HOWEVER, that no dividend whatsoever shall be paid, and no distribution shall 
be made, on any Common Stock unless and until each holder of the Series A 
Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and 
Series D Preferred Stock shall have been paid in full its respective pro rata 
portion of such dividend.

    (b)  Holders of shares of the Series C Preferred Stock shall be entitled 
to receive the dividends provided for in Section 3(a) hereof in preference to 
and in priority over any dividends upon any of the Junior Securities, except 
for the Common Stock.

    (c)  Holders of shares of the Series C Preferred Stock shall be entitled 
to receive the dividends provided for in Section 3(a) hereof on a pro rata 
basis with respect to any dividends upon any Parity Securities.

    SECTION 4.     LIQUIDATION PREFERENCE.

    (a)  Upon any Liquidating Event with respect to the Company, the Holders 
of shares of Series C Preferred Stock then outstanding shall be entitled to 
be paid, out of the assets of the Company available for distribution to its 
stockholders, $1,000 per share of Series C Preferred Stock (the "LIQUIDATION 
PREFERENCE"), plus an amount in cash equal to any declared but unpaid 
dividends thereon, before any payment shall be made or any assets distributed 
to the holders of any of the Junior Securities, including, without 
limitation, Common Stock.  Except as provided in the preceding sentence, 
holders of shares of Series C Preferred Stock shall not be entitled to any 
distribution in the event of liquidation, dissolution or winding up of the 
affairs of the

                                       2
<PAGE>

Company.  If the assets of the Company are not sufficient to pay in full the 
liquidation payments payable to the holders of outstanding shares of the 
Series C Preferred Stock and all Parity Securities, then the holders of all 
such shares shall share equally and ratably in such distribution of assets of 
the Company in accordance with the amounts which would be payable on such 
distribution if the amount to which the holders of outstanding shares of 
Series C Preferred Stock and the holders of outstanding shares of all Parity 
Securities are entitled were paid in full.

    (b)  "LIQUIDATING EVENT" shall mean, with respect to any Person, any of 
the following events:  (i) the commencement by such Person of a voluntary 
case under the bankruptcy laws of the United States, as now or hereafter in 
effect, or the commencement of an involuntary case against such Person with 
respect to which the petition shall not be controverted within 15 days, or be 
dismissed within 60 days, after commencement thereof; (ii) the appointment of 
a custodian for, or the taking charge by a custodian of, all or substantially 
all of the property of such Person; (iii) the commencement by such Person of 
any proceeding under any reorganization, arrangement, adjustment of debt, 
relief of debtors, dissolution, insolvency or liquidation or similar law of 
any jurisdiction whether now or hereafter in effect relating to such Person; 
(iv) the commencement against such Person of any proceeding set forth in the 
preceding clause (iii), which is not controverted within 10 days thereof and 
dismissed within 60 days after the commencement thereof; (v) the adjudication 
of such Person insolvent or bankrupt, or the adoption by such Person of a 
plan of liquidation; (vi) the occurrence of any Change of Control with 
respect to such Person or (vii) the filing of a certificate of dissolution in 
respect of the Company with the Secretary of State of the State of Delaware; 
in any of cases (i) through (vi) above, in a single transaction or series of 
related transactions. 

    SECTION 5.     TYPE A CONVERSION

    (a)  Each holder of Series C Preferred Stock shall have the right, at its 
option, at any time, to convert, subject to the terms and provisions of this 
Section 5, all, but not less than all, of its Series C Preferred Stock then 
outstanding into such number of fully paid and non-assessable shares of 
Common Stock as results from dividing (i) the sum of (A) the aggregate 
Liquidation Preference of all shares of Series C Preferred Stock to be 
converted plus (B) any declared but unpaid dividends on such shares, by (ii) 
the applicable Conversion Price on the Conversion Date.  In addition, and 
without limiting the right to conversion in whole set forth above, 
substantially contemporaneously with any Partial Conversion Event, each 
holder of Series C Preferred Stock shall have the right, at its option, to 
convert (which conversion, if such option is exercised, shall be deemed to 
occur on such Partial Conversion Event), subject to the terms and provisions 
of this Section 5, all or any part of its Series C Preferred Stock then 
outstanding into such number of fully paid and non-assessable shares of 
Common Stock as results from dividing (i) the sum of (A) the aggregate 
Liquidation Preference of all shares of Series C Preferred Stock to be 
converted plus (B) any declared but unpaid dividends on such shares, by (ii) 
the applicable Conversion Price (as defined below) on the Conversion Date.  
The person or persons entitled to receive the shares of Common Stock upon 
conversion of such shares of Series C Preferred Stock shall be treated for 
all purposes as having become the record holder or holders of such shares of 
Common Stock on the Conversion Date and such conversion shall be at the 
Conversion Price in effect at such time.  

                                       3
<PAGE>

    (b)  In order to convert all or any portion of its outstanding Series C 
Preferred Stock into shares of Common Stock pursuant to this Section 5, the 
holder of such Series C Preferred Stock shall deliver certificates 
representing the shares of Series C Preferred Stock to be converted to the 
Company at its principal office, together with written notice that it elects 
to convert those shares of Series C Preferred Stock into shares of Common 
Stock in accordance with the provisions of this Section 5.  Such notice shall 
specify the number of shares of Series C Preferred Stock to be converted and 
the name or names in which the holder wishes the certificates for shares of 
Common Stock to be registered.

    (c)  Upon any Type A Conversion, pursuant to this Section 5 and Section 5 
of the certificate of designation of Series B Preferred Stock, of all of the 
outstanding shares of Series B Preferred Stock and Series C Preferred Stock, 
the Company shall immediately file a certificate with the Secretary of State 
of the State of Delaware, pursuant to Section 151(g) of the Delaware General 
Corporation Law, setting forth a resolution or resolutions adopted by the 
Board of Directors of the Company that none of the authorized shares of 
Series D Preferred Stock are outstanding and that none will be issued subject 
to the Series D Certificate of Designation.

    SECTION 6.     TYPE B CONVERSION

    (a)  The right to conversion set forth in this Section 6 shall be in 
addition to, and not in lieu of, the conversion rights set forth in Section 
5.  

    (b)  At any time on or after the Type B Trigger Date, the Majority 
Holders may elect to deliver an irrevocable Type B Conversion notice (the 
"TYPE B CONVERSION NOTICE") to the Company; PROVIDED, HOWEVER, that no such 
Type B Conversion Notice shall be effective unless substantially 
contemporaneously with the delivery of such Type B Conversion Notice, 
Majority Holders of the Series B Preferred Stock shall deliver a Type B 
Conversion Notice (as defined in the Certificate of Designation relating to 
the Series B Preferred Stock) to the Company.  The date of delivery to the 
Company of a Type B Conversion Notice shall be denominated herein a "TYPE B 
EVENT DATE" or a "CONVERSION DATE".  Upon receipt of a Type B Conversion 
Notice, the Company shall as soon as practicable deliver a copy of such Type 
B Conversion Notice to each holder of Series C Preferred Stock and each 
holder of Series B Preferred Stock.

    (c)  On the Type B Event Date, each share of Series C Preferred Stock 
then outstanding shall automatically be converted into such number of fully 
paid and non-assessable shares of Series D Preferred Stock as results from 
dividing (i) the sum of (A) the aggregate Liquidation Preference of such 
share of Series C Preferred Stock plus (B) any declared but unpaid dividends 
on such share, by (ii) the product of ten (10) times the applicable 
Conversion Price on the Conversion Date.  The person or persons entitled to 
receive the shares of Series D Preferred Stock upon conversion of such shares 
of Series C Preferred Stock shall be treated for all purposes (including 
without limitation voting rights) as having become the record holder or 
holders of such shares of Series D Preferred Stock on the Type B Event Date, 
whether or not such person or persons deliver its certificates for shares of 
Series C Preferred Stock to the Company on the Type B Event Date.  

                                       4
<PAGE>

    (d)  As soon as practicable after the Type B Event Date, each holder of 
Series C Preferred Stock shall deliver its certificates for shares of Series 
C Preferred Stock to the Company at its principal office.  Except as provided 
in this Certificate of Designation, all rights with respect to such Series C 
Preferred Stock shall terminate on the Type B Event Date, and on such Type B 
Event Date the holders of the shares of Series D Preferred Stock into which 
the shares of Series C Preferred Stock were converted shall have all of the 
rights accorded to holders of the Company's Series D Preferred Stock.

    (e)  The rights of holders of shares of Series C Preferred Stock pursuant 
to this Section 6 shall not be transferable, except to an Affiliate as of the 
Initial Issue Date of the holder.

    SECTION 7.     GENERAL PROVISIONS RELATING TO CONVERSION

    The following provisions shall be applicable to any conversion pursuant 
to either Section 5 or Section 6 hereof.

    (a)  As promptly as practicable after the surrender as hereinabove 
provided of certificates representing shares of Series C Preferred Stock 
converted or to be converted into shares of Common Stock or Series D 
Preferred Stock, the Company shall deliver or cause to be delivered to the 
holder, or the holder's designee, certificates representing the number of 
fully paid and non-assessable shares of Common Stock or Series D Preferred 
Stock into which the shares of Series C Preferred Stock are converted 
(including any adjustment pursuant to Section 8(b) below) and, if less than 
the entire number of shares of Series C Preferred Stock represented by the 
certificate or certificates surrendered is to be converted, a new certificate 
for the number of shares of Series C Preferred Stock not so converted.  So 
long as any shares of Series C Preferred Stock remain outstanding, the 
Company shall not close its Common Stock transfer books. The issuance of 
certificates representing shares of Common Stock or Series D Preferred Stock 
issued upon the conversion of shares of Series C Preferred Stock shall be 
made without charge to the holder of Series C Preferred Stock for any tax in 
respect of the issuance of such certificates (other than any transfer, 
withholding or other tax if the shares of Common Stock or Series D Preferred 
Stock are to be registered in a name different from that of the registered 
holder of Series C Preferred Stock).

    (b)  No fractional shares of Common Stock or scrip representing 
fractional shares of Common Stock or Series D Preferred Stock shall be issued 
upon any conversion of any shares of Series C Preferred Stock, and the number 
of shares of Common Stock or Series D Preferred Stock to be issued shall be 
rounded up to a whole share.  

    (c)  The Company shall at all times reserve and keep available out of its 
authorized but unissued shares of Common Stock and preferred stock, par value 
$.001 per share, solely for the purpose of effecting the conversion of shares 
of Series C Preferred Stock and Series B Preferred Stock and the issuance of 
Common Stock in respect of the Warrants and the Carlyle Warrants, the full 
number of whole shares of Common Stock and Series D Preferred Stock then 
deliverable upon the conversion of all shares of Series B Preferred Stock and 
Series C Preferred Stock then outstanding and the issuance of Common Stock in 
respect of the Warrants and the Carlyle Warrants.  The Company shall take at 
all times such corporate action as shall be

                                       5
<PAGE>

necessary in order that the Company may validly and legally issue fully paid 
and non-assessable shares of Common Stock or Series D Preferred Stock upon 
the conversion of shares of Series B Preferred Stock and Series C Preferred 
Stock in accordance with the provisions of Section 5 and Section 6, and the 
issuance of Common Stock in respect of the Warrants and the Carlyle Warrants. 
 If at any time the number of authorized but unissued shares of Common Stock 
or Series D Preferred Stock shall not be sufficient to effect the conversion 
of all then outstanding shares of the Series B Preferred Stock and the Series 
C Preferred Stock and the issuance of Common Stock in respect of the Warrants 
and the GE Warrants, in addition to such other remedies as shall be available 
to the holders of the Series C Preferred Stock, the Company shall forthwith 
take such corporate action as may be necessary to increase its authorized but 
unissued shares of Common Stock and Series D Preferred Stock to such numbers 
of shares as shall be sufficient for such purpose, including but not limited 
to promptly calling and holding a meeting of the Company's stockholders, at 
which the Company's stockholders shall vote on a proposed amendment to the 
Certificate of Incorporation that would so increase the number of authorized 
shares of Common Stock or preferred stock, par value $.001 per share, as 
appropriate, a favorable vote for which amendment shall have been recommended 
to the Company's stockholders by the Board of Directors, pursuant to a duly 
and validly adopted resolution of the Board of Directors setting forth the 
amendment proposed and declaring its advisability, all in accordance with 
Section 242 of the Delaware General Corporation Law; and, in case of an 
increase in the number of authorized shares of such preferred stock, the 
Board of Directors shall promptly cause to become effective a certificate of 
increase pursuant to Section 151 of the Delaware General Corporation Law.

    (d)  If any shares of Common Stock or Series D Preferred Stock to be 
reserved for the purpose of conversion of Series C Preferred Stock require 
registration or listing with, or approval of, any governmental authority, 
stock exchange, NASD Inc., Nasdaq or other regulatory body under any federal 
or state law, federal or state regulation, rule of NASD Inc., Nasdaq or 
otherwise, before such shares may be validly issued or delivered upon 
conversion, the Company shall, in good faith and as expeditiously as 
practicable, endeavor to secure such registration, listing or approval, as 
the case may be.

    (e)  All shares of Common Stock or Series D Preferred Stock that may be 
issued upon conversion of the Series C Preferred Stock shall upon issuance by 
the Company be validly issued, fully paid and non-assessable and free from 
all taxes, liens and charges with respect to the issuance thereof.

    (f)  In the event of any taking by the Company of a record of the holders 
of any class of Capital Stock for the purpose of determining the holders 
thereof who are entitled to receive any dividend or other distribution, any 
right to subscribe for, purchase or otherwise acquire any shares of Capital 
Stock or any other securities or property, or to receive any other right, the 
Company shall mail to each holder of Series C Preferred Stock, at least 20 
days prior to the date specified therein, a notice specifying the date on 
which any such record is to be taken for the purpose of such dividend, 
distribution or right, and the amount and character of such dividend, 
distribution or right. 

                                       6
<PAGE>

    (g) The Company shall not, by amendment of its Certificate of 
Incorporation or through any reorganization, transfer of assets, 
consolidation, merger, dissolution, issuance or sale of securities or any 
other action, avoid or seek to avoid the observance or performance of any of 
the terms to be observed or performed hereunder by the Company, but shall at 
all times in good faith assist in the carrying out of all the provisions of 
this Section 7 and Sections 5, 6 and 8 and in the taking of all such action 
as may be necessary or appropriate in order to protect the conversion rights 
of the holders of the shares of Series C Preferred Stock against impairment 
of any kind.

    SECTION 8.     CONVERSION PRICE.  

    (a)  As used herein, the "Conversion Price" shall initially be $8.375 per 
share of Common Stock, subject to adjustment as set forth below.  In order to 
prevent the dilution of the rights granted hereunder, the Conversion Price 
shall be subject to adjustment from time to time as provided in this Section 
8.

    (b)  If and whenever the Company issues or sells or, in accordance with 
Section 8(c), is deemed to have issued or sold, any share of Common Equity 
without consideration or for a consideration per share less than the 
Conversion Price in effect immediately prior to such issuance or sale, the 
Conversion Price in effect immediately prior to such time shall immediately 
be reduced to the price determined by dividing (i) an amount equal to the sum 
of (A) the number of shares of Common Equity outstanding immediately prior to 
such issuance multiplied by the Conversion Price in effect immediately prior 
to such issuance, and (B) the consideration, if any, received by the Company 
upon such issuance, by (ii) the total number of shares of Common Equity 
outstanding immediately after such issuance.  Notwithstanding the foregoing, 
there shall be no adjustment to the Conversion Price with respect to (i) the 
granting of stock options to employees of the Company authorized but not 
granted as of the Initial Issue Date for an aggregate of up to 300,000 shares 
of Common Equity (as such number of shares is equitably adjusted for 
subsequent stock splits, reclassifications, stock combinations, stock 
dividends and recapitalizations), or (ii) the issuance upon exercise of up to 
300,000 shares of Common Equity (as such number of shares is equitably 
adjusted for subsequent stock splits, stock combinations, stock dividends and 
recapitalizations) in connection with the stock options described in clause 
(i) of this sentence.

    (c)  For purposes of determining the adjusted Conversion Price under 
Section 8(b) above, the following shall be applicable:

         (1)  CONSIDERATION.  If any Common Equity, Options or Convertible
    Securities are issued or sold or deemed to have been issued or sold for
    cash, the consideration received therefor shall be deemed to be the cash
    amount received by the Company therefor (which, in the case of any public
    offering of such securities for cash, shall not be reduced for any
    underwriters discount, and in no event shall be reduced by the amount of
    any reasonable expenses actually paid by the Company in connection
    therewith).  In case any Common Equity, Options or Convertible Securities
    are issued or sold for a consideration other than cash, the amount of the
    consideration other than cash received by

                                       7
<PAGE>

    the Company shall be the fair market value of such consideration.  In 
    case any Common Equity, Options or Convertible Securities are issued to 
    the owners of the other constituent entity in connection with any merger 
    in which the Company or any Subsidiary of the Company is a constituent 
    entity, the amount of consideration for such Common Equity, Options or 
    Convertible Securities shall be deemed to be the fair market value of 
    such portion of the net assets and business of such other constituent 
    entity as is fairly attributable to such Common Equity, Options or 
    Convertible Securities, as the case may be.  The fair market value of any 
    consideration other than cash shall be determined jointly by the Company 
    and the Majority Holders.  If such parties are unable to reach agreement 
    within a reasonable period of time, such fair market value shall be 
    determined by an appraiser jointly selected by the Company and the 
    Majority Holders.  If such parties are unable to reach agreement within a 
    reasonable period of time, such fair market value shall be determined by 
    an appraiser reasonably selected by the Company and reasonably approved 
    by the Majority Holders.  The determination of such appraiser shall be 
    final and binding on the Company and the holders of the shares of Series 
    C Preferred Stock, and the fees and expenses of such appraiser shall be 
    paid by the Company, unless the fair market value determined by such 
    appraiser is less than five percent (5%) above the value proposed in 
    writing by the Company and rejected by the Majority Holders prior to the 
    selection of such appraiser, in which event the fees and expenses of such 
    appraiser shall be for the account of the holders of the then outstanding 
    shares of Series C Preferred Stock (on a pro rata basis).  

          (2) OPTIONS AND CONVERTIBLE SECURITIES.  In the case of the granting
    or sale of any Option or Convertible Security (whether or not at the time
    convertible, exercisable or exchangeable):

              (A)  the aggregate maximum number of shares of Common Equity 
              deliverable, directly or indirectly, upon exercise of any 
              Option shall be deemed to have been issued at the time such 
              Option was granted and for a consideration equal to the (i) 
              consideration (determined in the manner provided in subsection 
              (1) above), if any, received by the Company upon the issuance 
              of such Option plus (ii) the minimum purchase price provided in 
              such Option for the Common Equity covered thereby, up to an 
              amount equal to the Conversion Price in effect at the time such 
              Option was granted;

              (B)  the aggregate maximum number of shares of Common Equity 
              deliverable upon conversion of or in exchange for any such 
              Convertible Security, or upon the exercise of any Option to 
              purchase or acquire any Convertible Security and the subsequent 
              conversion or exchange thereof, shall be deemed to have been 
              issued at the time such Convertible Security was issued or such 
              Option was issued and for a consideration equal to the 
              consideration, if any, received by the Company for any such 
              Convertible Security and any related Option, plus the 
              additional consideration (determined in the manner provided in 
              subsection (1)

                                       8
<PAGE>

              above), if any, to be received by the Company upon the 
              conversion or exchange of such Convertible Security, or upon 
              the exercise of any related Option to purchase or acquire any 
              Convertible Security and the subsequent conversion or exchange 
              thereof;

              (C)  on any change in the number of shares of Common Equity 
              deliverable, directly or indirectly, upon conversion, exercise 
              or exchange of any such Option or Convertible Security or any 
              change in the consideration to be received by the Company upon 
              such exercise, conversion or exchange, including, but not 
              limited to, a change resulting from the anti-dilution 
              provisions thereof, the Conversion Price as then in effect 
              shall forthwith be readjusted to such Conversion Price as would 
              have been obtained had an adjustment been made upon the 
              issuance of such Option or Convertible Security upon the basis 
              of such change;

              (D)  if the Conversion Price shall have been adjusted upon the 
              issuance of any such Option or Convertible Security, no further 
              adjustment of the Conversion Price shall be made for the actual 
              issuance of Common Equity upon any exercise, conversion, or 
              exchange thereof;

    provided, however, that none of the events set forth in Section 8(c)(2)(A)
    through 8(c)(2)(D), inclusive, shall result in any increase in the
    Conversion Price.

         (3)  INTEGRATED TRANSACTION.  In case any Option is issued in
    connection with the issue or sale of other securities of the Company,
    together comprising one integrated transaction in which no specific
    consideration is allocated to such Options by the parties thereto, the
    Options shall be deemed to have been issued without consideration.

         (4)  TREASURY SHARES.  The number of shares of Common Equity
    outstanding at any given time shall not include shares owned or held by or
    for the account of the Company, and the disposition of any shares so owned
    or held shall be considered an issuance or sale of Common Equity.

         (5)  RECORD DATE.  If the Company takes a record of the holders of
    Common Equity for the purpose of entitling them (A) to receive a dividend
    or other distribution payable in Common Equity, Options or in Convertible
    Securities or (B) to subscribe for or purchase Common Equity, Options or
    Convertible Securities, then such record date shall be deemed to be the
    date of the issuance or sale of the shares of Common Equity deemed to have
    been issued or sold upon the declaration of such dividend or the making of
    such other distribution or the date of the granting of such right of
    subscription or purchase, as the case may be.

    (d)  If the Company at any time subdivides (by any stock split, stock
dividend, reclassification, recapitalization or otherwise) one or more classes
of its outstanding shares of Common Equity into a greater number of shares, the
Conversion Price in effect immediately prior to such subdivision shall be
proportionately reduced.  If the Company at any time combines

                                       9
<PAGE>

(by reverse stock split or otherwise) one or more classes of its outstanding 
shares of Common Stock into a smaller number of shares, the Conversion Price 
in effect immediately prior to such combination shall be proportionately 
increased.

    (e)  Any recapitalization, reorganization, reclassification, 
consolidation, merger, sale of all or substantially all of the Company's 
assets or other transaction, in each case which is effected in such a way 
that the holders of Common Equity are entitled to receive (either directly or 
upon subsequent liquidation) stock, securities, cash, debt instruments or 
assets with respect to or in exchange for Common Equity is referred to herein 
as a "CORPORATE CHANGE." In case of any Corporate Change, each share of 
Series C Preferred Stock then outstanding will become convertible only into 
the kind and amount of securities, cash and other property receivable upon 
such Corporate Change by the holder of the number of shares of Common Stock 
into which such share of Series C Preferred Stock was convertible immediately 
prior thereto (assuming such holder of Common Stock failed to exercise any 
rights of election).  The Company shall not effect any such consolidation, 
merger or sale, unless prior to the consummation thereof, the successor 
entity (if other than the Company) resulting from consolidation or merger or 
the entity purchasing such assets assumes by written instrument the 
obligation to deliver to the holders of shares of Series C Preferred Stock 
such shares of stock, securities, cash, debt instruments or assets as, in 
accordance with the foregoing provisions, such holder may be entitled to 
acquire.

    (f)  If any event occurs of the type contemplated by the provisions of 
this Section 8 but not expressly provided for by such provisions (including, 
without limitation, the granting of stock appreciation rights, phantom stock 
rights or other rights with equity features), then the Company's Board of 
Directors shall make an appropriate adjustment in the Conversion Price so as 
to protect the rights of the holders of the shares of Series C Preferred 
Stock; provided that no such adjustment shall increase the Conversion Price 
obtainable as otherwise determined pursuant to this Section 8.

    (g)  If the Company declares or pays a dividend upon the Common Equity 
payable otherwise than out of earnings or earned surplus (determined in 
accordance with generally accepted accounting principles, consistently 
applied) except for a stock dividend payable in shares of Common Stock (a 
"LIQUIDATING DIVIDEND"), then the Company shall pay to each holder of a share 
of Series C Preferred Stock at the time of payment thereof the Liquidating 
Dividend which would have been paid to such holder on the Common Stock such 
holder would have owned had such holder fully exercised its right to convert 
the shares of Series C Preferred Stock into shares of Common Stock 
immediately prior to the date on which a record is taken for such Liquidating 
Dividend, or, if no record is taken, the date as of which the record holders 
of Common Equity entitled to such dividends are to be determined; provided, 
however, that if a Liquidating Dividend would involve the declaration or 
payment as a dividend of at least the lesser of (i) twenty percent (20%) of 
the Company's assets and (ii) Five Million Dollars ($5,000,000), then such 
Liquidating Dividend shall, at the option of the Majority Holders, be deemed 
to be a Liquidating Event and the rights of the holders of the shares of 
Series C Preferred Stock upon such Liquidating Event shall be governed by 
Section 4 hereof.

                                       10
<PAGE>

    (h)  Any transaction approved by the unanimous vote of the Acquisitions 
Committee or the unanimous vote of the Board pursuant to Section 10(c)(4) 
hereof shall not result in any adjustment to the Conversion Price in effect 
as of the closing of such transaction. 

    SECTION 9.     NO REDEMPTION.  

         The shares of Series C Preferred Stock shall not be subject to 
mandatory redemption by the Company.

    SECTION 10.    VOTING RIGHTS AND RELATED PROVISIONS.

    (a)  The Holders of shares of the Series C Preferred Stock will have the 
right to vote with the holders of Common Stock and the holders of the Series 
B Preferred Stock with respect to all matters submitted to a shareholder 
vote, except for the election of directors, which will be governed by Section 
10(b) below.  Each Holder of Series C Preferred Stock will have one vote for 
every share of Common Stock into which each share of Series C Preferred Stock 
is convertible pursuant to Sections 5 and 7 hereof as of the record date for 
such vote; provided, however, that the aggregate number of votes under this 
Section 10(a), when combined with the aggregate number of votes attributable 
to the holders of the Series B Preferred Stock pursuant to Section 10(a) of 
the Certificate of Designation with respect to the Series C Preferred Stock, 
with respect to any given matter submitted to a shareholder vote, shall not 
exceed 37% of the total number of votes eligible to be cast with respect to 
such matter (the "AGGREGATE VOTING LIMITATION").  In order to effectuate the 
Aggregate Voting Limitation, the eligible votes allocable to each holder of 
shares of Series B Preferred Stock and Series C Preferred Stock shall be 
reduced, on a pro rata basis based on the percentage of aggregate Series B 
Preferred Stock and Series C Preferred Stock liquidation preference 
attributable to the shares owned by such holder, to the highest whole number 
consistent with the Aggregate Voting Limitation.  Any shares of Series B 
Preferred Stock or Series C Preferred Stock held by the Company or any 
Subsidiary of the Company shall not have voting rights hereunder and shall 
not be counted in determining the presence of a quorum or in calculating any 
percentage of shares under this Section 10.

    (b)  The provisions set forth in this Section 10(b) shall govern the 
rights of the holders of the Series C Preferred Stock to elect directors of 
the Company:

         (1)  SERIES C DIRECTOR; JOINT DIRECTOR.  

              (A)  The number of directors of the Company shall be as from time
    to time fixed by, or determined in the manner provided in, the Certificate
    of Incorporation and the Bylaws of the Company (subject, in all respects,
    to the protective provisions contained in Section 11 hereof).  Prior to a
    Type B Event Date, the number of directors shall be no less than eight (8)
    nor more than nine (9), of which one member shall be the Joint Director. 
    One such director shall be designated as "SERIES C DIRECTOR" and shall be
    elected by the Majority Holders and one such director shall be designated
    as "JOINT DIRECTOR" and shall be an Independent director nominated by the
    Majority Holders of the Series B Preferred Stock and the Majority Holders
    of the Series C Preferred Stock,

                                       11
<PAGE>

    approved by the Board of Directors in its sole discretion.  Unless a Type 
    B Conversion Notice has been given, the Series C Director shall 
    automatically be removed if the aggregate liquidation preference with 
    respect to the Series C Preferred Stock owned by the Initial Purchaser 
    and any Affiliate as of the Initial Issue Date of the Initial Purchaser, 
    taken as a whole, falls below 25% of the total liquidation preference of 
    the shares of Series C Preferred Stock and shares of Series A Preferred 
    Stock outstanding on the Initial Issue Date.  Prior to a Type B Event 
    Date, the Majority Holders shall have the exclusive right to remove such 
    Series C Director without cause at any time and to designate another 
    person as the Series C Director.

         (B)  The Preferred Stock Directors shall be divided into three (3)
    classes as nearly equal in number as possible, with the term of office of
    the first Preferred Stock Director to be nominated and elected by the
    holders of the Series B Preferred Stock, at their option at any time after
    the initial issuance of the shares of Series B Preferred Stock, to expire
    at the annual meeting of stockholders held in 1998, the term of office of
    the second Preferred Stock Director to be nominated and elected by the
    holders of the Series B Preferred Stock upon initial issuance of the shares
    of Series B Preferred Stock to expire at the annual meeting of stockholders
    held in 2000, the term of office of the Preferred Stock Director to be
    nominated and elected by the holders of the Series C Preferred Stock upon
    initial issuance of the shares of Series C Preferred Stock to expire at the
    annual meeting of stockholders held in 1999, and the term of office of the
    Joint Director to expire at the annual meeting of stockholders held in
    1997.  At each annual meeting of stockholders after such initial
    classification and election, directors elected to succeed those directors
    whose terms expire at such annual meeting shall be elected for a term of
    office to expire at the third succeeding annual meeting of stockholders
    after their election. 

              (C)  Upon a Type B Event Date, any Series C Director already
    serving as a member of the Board shall continue to serve in such position
    until the expiration of his term and the election of his successor or until
    his earlier death, removal, resignation or retirement. After a Type B Event
    Date, the Joint Director and the Series C Director shall be subject to
    removal only for cause and only by the affirmative vote of eighty percent
    (80%) of the combined voting power of the outstanding shares of the
    Corporation entitled to vote.  The Preferred Stock Directors and the Joint
    Director shall not be removed without cause otherwise than as described in
    this Section 10(b)(1). 

              (D)  After a Type B Event Date, the Board of Directors shall
    comprise:  (i) one Joint Director, until the expiration of his term, as
    provided herein; (ii) three Preferred Stock Directors, until the expiration
    of their respective terms, after which time such positions previously
    elected by holders of the series of Preferred Stock that gave the Type B
    Conversion Notice shall be subject to election by holders of shares of
    Series D Preferred Stock, subject to the limitations contained in the
    Series D Certificate of Designation; (iii) not less than four (4) nor more
    than five (5) additional directors elected by holders of shares of Common
    Equity and Series D Preferred Stock, subject to the limitations contained
    in the Series D Certificate of Designation; and (iv) such number of other
    directors (the "CONVERSION DIRECTORS") elected following a Type B Event
    Date by

                                       12
<PAGE>

    the holders of shares of Series D Preferred Stock as is determined 
    pursuant to the Series D Certificate of Designation.  

         (2)  With respect to filling the vacancy on the Board of Directors
    with respect to the initial Joint Director, the holders of shares of Series
    B Preferred Stock and Series C Preferred Stock shall give written notice to
    the Secretary of the Company of the identity of the person nominated by
    such holders.  Such written notice shall be executed, manually, or by
    photocopy or facsimile, in any number of counterparts, by the Majority
    Holders of the Series B Preferred Stock and by the Majority Holders of the
    Series C Preferred Stock.  The person so nominated shall be "independent,"
    which means that such person shall not be a director, officer, or employee
    or affiliate (as defined in Section 203(c) of the Delaware General
    Corporation Law) of any of the holders of Series B Preferred Stock or
    Series C Preferred Stock or of the Company.  Upon receipt of such written
    notice, the Board of Directors shall have ten (10) business days in which
    to approve or disapprove such nominee.  If the Board of Directors approves
    such nominee, such nominee shall immediately fill such vacancy.  If the
    Board of Directors disapproves such nominee, the Secretary of the Company
    shall immediately give written notice thereof to all of the holders of
    shares of Series B Preferred Stock and Series C Preferred Stock.  If such a
    written notice from the Secretary has not been received by such holders
    twelve (12) business days after the receipt by the Company of such written
    notice of nomination, then the Board of Directors shall be conclusively
    deemed to have approved such nominee and such nominee shall immediately
    fill such vacancy.  If such written notice from the Secretary has been so
    received within such twelve (12) business days, such holders may nominate
    another independent person by written notice to the Secretary, subject to
    the same approval process as hereinabove provided.  Such process of
    nomination and approval or disapproval shall continue until an independent
    person is nominated who is approved or deemed to be approved by the Board
    of Directors.  No nominations for such director shall be made or received
    other than as described in this Section 10(b)(2).  

         (3)  With respect to the nomination and election of succeeding Joint
    Directors, the holders of shares of Series B Preferred Stock and Series C
    Preferred Stock shall give timely written notice to the Secretary of the
    Company of the identity of the person nominated by such holders.  Such
    written notice shall be executed, manually, or by photocopy or facsimile,
    in any number of counterparts, by the Majority Holders of the Series B
    Preferred Stock and by the Majority Holders of the Series C Preferred
    Stock.  Such written notice shall be timely if received at the principal
    executive office of the Company not less than 60 days nor more than 120
    days before the meeting of shareholders at which such director is to be
    elected.  The person so nominated shall be "independent," which means that
    such person shall not be a director, officer, employee or affiliate (as
    defined in Section 203(c) of the Delaware General Corporation Law) of any
    of the holders of Series B Preferred Stock or Series C Preferred Stock or
    the Company.  Upon receipt of such written notice, the Board of Directors
    shall have ten (10) business days in which to approve or disapprove such
    nominee.  If the Board of Directors disapproves such nominee, the Secretary
    of the Company shall immediately give written

                                       13
<PAGE>

    notice thereof to all of the holders of shares of Series B Preferred 
    Stock and Series C Preferred Stock. If such a written notice from the 
    Secretary has not been received by such holders twelve (12) business days 
    after the receipt by the Company of such written notice of nomination, 
    then the Board of Directors shall be conclusively deemed to have approved 
    such nominee.  If such written notice from the Secretary has been so 
    received within such twelve (12) business days, such holders may nominate 
    another independent person by written notice to the Secretary, subject to 
    the same approval process as hereinabove provided.  Such process of 
    nomination and approval or disapproval shall continue until an 
    independent person is nominated who is approved or deemed to be approved 
    by the Board of Directors.  No nominations for such director shall be 
    made or received other than as described in this Section 10(b)(3).  
    Election of such person shall be by the holders of shares of the 
    Company's Common Stock.

         (4)  Prior to a Type B Event Date, a vacancy of a Preferred Stock
    Director position shall be filled only by a majority vote of or written
    consent of holders of a majority of the then outstanding shares of the
    series of Preferred Stock that elected the director whose death,
    resignation, retirement, disqualification or removal from office caused the
    vacancy.  Prior to a Type B Event Date, a vacancy of the position of Joint
    Director shall be filled only by the Board of Directors, following
    nomination by holders of a majority of the then outstanding shares of
    Series B Preferred Stock and holders of a majority of the then outstanding
    shares of the Series C Preferred Stock, pursuant to the procedure described
    in Section 10(b)(2).  Directors chosen pursuant to any of the foregoing
    provisions shall hold office for a term expiring at the annual meeting of
    stockholders at which the term of the class to which they have been elected
    expires and until their successors are duly elected and have qualified or
    until their earlier resignation or removal.  If holders of shares of Series
    C Preferred Stock shall, pursuant to the Certificate of Incorporation, but
    not as a result of a Type B Conversion, cease to have the right to elect
    any Preferred Stock Directors, then the director elected by holders of
    shares of Series C Preferred Stock shall be deemed to have resigned
    immediately upon such cessation.  Upon the occurrence of any such deemed
    resignation referred to in the immediately preceding two sentences, the
    directorship previously held by the director deemed to have resigned shall
    automatically become a vacancy to be filled by the Board of Directors.

         (5)  Shares of Series C Preferred Stock shall be deemed to be shares
    "entitled to vote" or entitled to vote in the election of directors for
    purposes of the provisions of the Certificate of Incorporation that employ
    such terms, and, for purposes of such provisions at any time, each
    outstanding share of Series C Preferred Stock shall count as such number of
    shares of Common Stock into which such share of Series C Preferred Stock is
    then convertible pursuant to Sections 5 and 7 hereof (subject to the
    percentage limitation set forth in Section 10(a) hereof as such percentage
    limitation would otherwise apply pursuant to such Section 10(a)).

    (c)  Immediately following the initial issuance of shares of Series B 
Preferred Stock, the Board of Directors shall appoint the following 
committees of the Board of Directors with the

                                       14
<PAGE>

respective duties, membership and voting requirements stated below.  After 
such appointment and until a Type B Event Date, the following matters shall 
be deemed approved by the Board of Directors only upon receiving the 
affirmative vote of a majority of the Board of Directors and a majority of 
the directors elected by the holders of the Series B Preferred Stock and the 
Series C Preferred Stock: (A) a decision to eliminate or discharge the Audit 
Committee, Compensation Committee, Executive Committee or the Acquisitions 
Committee, as described more fully below (such committees are the 
"COMMITTEES"), (B) a decision to reduce, narrow, attenuate or otherwise 
weaken the delegation of powers by the Board of Directors to any of the 
Committees, unless such reduction, narrowing, attenuation or other weakening 
is the transfer of delegated powers from the Compensation Committee or the 
Acquisitions Committee to the Executive Committee, (C) a decision to change 
the number of members of any Committee, the identity of the persons or 
entities entitled to select each of the members of any Committee, the size of 
the required vote for approval by any Committee and the size of the required 
vote of the Board of Directors necessary to approve actions that failed to 
obtain the required approval vote on the appropriate Committee; and (D) a 
decision to create any new committee.  If the holders of the Series C 
Preferred Stock shall cease to have the right to nominate and elect any 
director at all, otherwise than as a result of the conversion of their shares 
of Series C Preferred Stock in a Type B Conversion, then such holders shall 
no longer have the right to select any member of any of the committees set 
forth below and the member or members of such committees selected by such 
holders shall automatically cease to be a member or members of such 
committees.

         (1)  COMPENSATION COMMITTEE.  The Compensation Committee shall
    consist of three (3) members, at least one (1) of whom shall be
    selected jointly by the Series C Director and directors elected by
    holders of the Series B Preferred Stock (the "SERIES B DIRECTORS"),
    and who shall be a director.  An affirmative vote of at least two (2)
    members of the Compensation Committee shall be required for approval
    of matters considered by the Compensation Committee.  The Compensation
    Committee shall ensure that the representative on the Compensation
    Committee nominated by the Series B Directors and the Series C
    Director receive adequate notice of and an opportunity to participate
    in any meetings of the Compensation Committee;

         (2)  AUDIT COMMITTEE.  The Audit Committee shall consist of three
    (3) directors, including as many Independent directors as are
    available, not to exceed three (3).  An affirmative vote of at least
    two (2) members of the Audit Committee shall be required for approval
    of matters considered by the Audit Committee.

         (3)  EXECUTIVE COMMITTEE.  The Executive Committee shall consist
    of four (4) members, one (1) of whom shall be the Series C Director,
    one (1) of whom shall be selected by the Series B Directors (and shall
    be a Series B Director) and two (2) of whom shall be selected by the
    Board of Directors (and shall be directors).  The members selected by
    the Series B Directors and the Series C Director may be removed only
    by the Series B Directors and the Series C Director, respectively. 
    The Executive Committee shall, in addition to the customary duties of
    an executive committee, have the right to approve any

                                       15
<PAGE>

    financing activity, including but not limited to the Capital Budget Plan. 
    An affirmative vote of at least three (3) members of the Executive 
    Committee shall be required for approval of any matters considered by the 
    Executive Committee.  Each financing activity not approved by the 
    Executive Committee may be referred to the Board of Directors for 
    approval, which approval shall require a Supermajority Vote; and

         (4)  ACQUISITIONS COMMITTEE.  The Acquisitions Committee shall
    consist of four (4) members, one (1) of whom shall be the Series C
    Director, one (1) of whom shall be selected by the Series B Directors
    (and shall be a Series B Director), and two (2) of whom shall be
    selected by the Board of Directors (and shall be directors).  The
    Acquisitions Committee shall have the right to approve any transaction
    of the types described in Section 11(n), (o), (p) and (q) with respect
    to which transaction the aggregate consideration payable in connection
    with such transaction (including, without limitation, cash
    consideration, the fair market value of any securities and the net
    present value of any deferred consideration) is less than $15 million. 
    A unanimous vote of the Acquisitions Committee shall be required for
    approval of any matters considered by the Acquisitions Committee. 
    Except as described in Section 10(d)(5) below, each matter considered
    but not unanimously approved by the Acquisitions Committee may be
    referred to the Board of Directors for approval, which approval shall
    require a majority vote of the Board of Directors.  

         (5)  CERTAIN TRANSACTIONS.  The unanimous approval of the
    Acquisitions Committee or the unanimous approval of the Board of
    Directors shall be required before the Company or any of its
    Subsidiaries engage in a transaction of the types described in Section
    11(n), (o) (which, only for purposes of this clause, shall also apply
    to Capital Expenditures made by the Company in the ordinary course of
    business), (p) and (q), in which transaction: (A) the aggregate
    consideration payable in connection with such transaction (including,
    without limitation, cash consideration, the fair market value of any
    securities and the net present value of any deferred consideration) is
    less than $15 million; and (B) the Company is to issue its Common
    Equity at an implicit or explicit price of less than $8.375 per share. 
    Such implicit price shall be determined in an appraisal approved
    unanimously by the Acquisitions Committee or unanimously by the Board
    of Directors, such appraisal to be performed by an independent
    appraiser selected unanimously by the Acquisitions Committee or
    unanimously by the Board of Directors.

    (d)  Prior to a Type B Event Date, the following matters shall be deemed
approved by the Board of Directors only upon a Supermajority Vote in respect of
any such matter:

         (A)  Approving the annual Capital Budget Plan; and

                                       16
<PAGE>

         (B)  Approving the Company entering into any financing activity
    not approved by the Executive Committee.

    (e)  The bylaws of the Company may be altered, amended, or repealed or new
bylaws may be adopted by the stockholders or by the Board of Directors at any
regular or special meeting of the stockholders or the Board of Directors, but
only if such alteration, amendment, repeal, or adoption has been approved: 

         (1)  in case of adoption by the Board of Directors prior to the First
Meeting following a Type B Event Date, by a majority of the Preferred Stock
Directors and either (A) a majority of the entire Board of Directors (if such
alteration, amendment, repeal, or adoption does not increase the number of
directors) or (B) by at least 80% of the members of the entire Board of
Directors (if such alteration, amendment, repeal, or adoption does increase the
number of directors); 

         (2)  in case of adoption by the stockholders at any meeting of
stockholders (other than the First Meeting following a Type B Event Date) with a
record date on or prior to a Type B Event Date, by holders of at least eighty
percent (80%) of the outstanding shares of the Corporation entitled to vote in
the election of directors, voting as one class, and by holders of a majority of
the shares, outstanding as of such record date, of whichever (or both) of Series
B Preferred Stock and Series C Preferred Stock continued (as of such record
date) to have the right under the certificate of incorporation to elect one or
more Preferred Stock Directors.

    (f)  If a Type B Event Date occurs prior to October 14, 1999, then the
following provisions shall apply:

         (1)  From such Type B Event Date until the second subsequent annual
    stockholders meeting of the Company after such Type B Event Date, none of
    the following actions or transactions shall be effected by the Company or
    approved by the Company as a stockholder of any Subsidiary of the Company,
    and neither the Initial Purchaser nor any other holder of shares of
    Series D Preferred Stock (other than a holder pursuant to either a transfer
    permitted under Rule 144 under the Securities Act of 1933, as amended or a
    transfer pursuant to a registered offering under registration rights from
    the Company) shall engage in, or be a party to, any of the following
    actions or transactions involving the Company or any Subsidiary of the
    Company, if, as of the record date for the determination of the
    stockholders entitled to vote thereon, or consent thereto, any other Person
    which obtained its equity interest in the Company as a result of a transfer
    of securities from the Initial Purchaser or any other Person referred to in
    clauses (A) through (D) of this sentence beneficially owns or controls,
    directly or indirectly, five percent (5%) or more of the outstanding shares
    of the Company entitled to vote:

              (A)  any merger or consolidation of the Company or any of its
         Subsidiaries with or into such other Person;

                                       17
<PAGE>

              (B)  any sale, lease, exchange or other disposition of all or any
         substantial part of the assets of the Company or any of its
         Subsidiaries to such other Person;

              (C)  the issuance or delivery of any voting securities of the
         Company or any of its Subsidiaries to such other Person in exchange
         for cash, other assets or securities, or a combination thereof; or

              (D)  any dissolution or liquidation of the Company;

    PROVIDED, HOWEVER, that such prohibition shall not apply with respect to
    any such action or transaction approved by (I) the affirmative vote of not
    less than eighty percent (80%) of the outstanding shares of the Company
    entitled to vote or (II) at least two-thirds (2/3) of the directors of the
    Company (which must include either (i) the Joint Director, if either (x)
    such Joint Director served in such position as of the Type B Event Date, or
    (y) such Joint Director has been approved by a majority of the directors
    who were Common Stock Directors as of the Type B Event Date, or (ii) at
    least one director who was a Common Stock Director prior to the Type B
    Event Date, unless neither the Joint Director, nor any of such Common Stock
    Directors continue to serve on the Board of Directors at such time).  For
    purposes of this Section 10(f), a Person shall be deemed to own or control,
    directly or indirectly, any outstanding shares of stock of the Company (A)
    which it has the right to acquire pursuant to any agreement, or upon the
    exercise of conversion rights, warrants or options, or otherwise, or (B)
    which are beneficially owned, directly or indirectly (including shares
    deemed owned through application of clause (A) above), by any other
    corporation, person or other entity (x) with which it or its "affiliate" or
    "associate" (as defined below) has any agreement, arrangement, or
    understanding for the purpose of acquiring, holding, voting or disposing of
    stock of the Company or (y) which is its "affiliate" or "associate," as
    those terms are defined under the Securities Exchange Act of 1934, as
    amended, and the rules and regulations promulgated thereunder.

         (2)  No transfer of Series C Preferred Stock may be made by the
    Initial Purchaser or any Affiliate of the Initial Purchaser (other than a
    transfer permitted under Rule 144 under the Securities Act or a transfer
    pursuant to a registered offering under registration rights from the
    Company) unless prior thereto, the transferee in such transfer shall have
    entered into an agreement in form and substance reasonably satisfactory to
    the Company, agreeing to be bound by the terms of Section 10(f)(1).

    (g)  The Majority Holders shall have the right to appoint one (1) observer
(who may be, but shall not be required to be, an employee of the Initial
Purchaser) to attend each meeting of the Board of Directors of the Company and
each meeting of any committee of the Board of Directors (the "Board Observer") 
The Board Observer shall be entitled to a copy of all written materials
(including Board meeting agendas and background materials) distributed to each
member of the Board of Directors of the Company as and when so distributed.

    SECTION 11.   PROTECTIVE PROVISIONS.

                                       18
<PAGE>

    Without limiting the provisions of any other Series of Preferred Stock, for
so long as the Initial Purchaser and any Affiliate as of the Initial Date of the
Initial Purchaser, taken as a whole, owns or own at least 33% in total
liquidation preference, taken as a whole, of the outstanding shares of Series C
Preferred Stock and the outstanding shares of Series A Preferred Stock, the
Company shall not take, and shall cause its Subsidiaries not to take, any of the
following actions without the affirmative vote of holders of at least
sixty-seven percent (67%) of the shares of the Series C Preferred Stock then
outstanding:

    (a)  alter, change or amend (by merger or otherwise) any of (i) the rights,
preferences and privileges of the Series C Preferred Stock or any other class of
Capital Stock, or (ii) the terms or provisions of any Option or Convertible
Security;

    (b)  enter into any transaction or event that could result in a Special
Corporate Event with respect to the Company or any Subsidiary;

    (c)  initiate any Liquidating Event with respect to the Company or any
Subsidiary;

    (d)  amend, restate, alter, modify or repeal (by merger or otherwise) the
Certificate of Incorporation or the Amended Bylaws of the Company, including,
without limitation, amendment, restating, modifying or repealing (by merger or
otherwise) any certificate of designation or preferences (as in effect from time
to time) relating to the Series A Preferred Stock, the Series B Preferred Stock,
the Series C Preferred Stock or the Series D Preferred Stock, including, without
limitation, the filing by the Company of a certificate with the Secretary of
State of the State of Delaware, pursuant to Section 151(g) of the Delaware
General Corporation Law, setting forth a resolution or resolutions adopted by
the Board of Directors of the Company that none of the authorized shares of
Series D Preferred Stock are outstanding and that none will be issued subject to
the Series D Certificate of Designation;

    (e)  amend, restate, alter, modify or repeal (by merger or otherwise) or
permit any Subsidiary to amend, restate, alter, modify or repeal (by merger or
otherwise) the certificate of incorporation, other organizational documents, or
bylaws of any Subsidiary in any material respect;

    (f)  change the number of directors of the Company to a number less than
eight (8) or more than nine (9) or the manner in which the directors are
selected, as provided in the Certificate of Incorporation, Amended Bylaws,
Series B Preferred Stock Certificate of Designation, Series C Preferred Stock
Certificate of Designation and Series D Preferred Stock Certificate of
Designation;

    (g)  incur any Indebtedness, in the aggregate with respect to the Company
and its Subsidiaries, in excess of $15 million in any Fiscal Year; PROVIDED,
HOWEVER, that this provision shall not apply to draw-downs under any credit
facility as to which a credit agreement had been executed and delivered on or
prior to the Initial Issue Date;

                                       19
<PAGE>

    (h)  become a party to Operating Leases during any Fiscal Year with respect
to which the present value of all payments due during the term of such Operating
Leases in the aggregate (determined using a discount rate of 10%) exceed $15
million; 

    (i)  create, authorize or issue any shares of Series C Preferred Stock or
any class or series of Senior Securities, Parity Securities or Supervoting
Securities or shares of any such class or series;

    (j)  reclassify any authorized stock of the Company into Series C Preferred
Stock or any class or series of Senior Securities, Parity Securities,
Supervoting Securities or shares of such class or series;

    (k)  increase or decrease the authorized number of shares of Series C
Preferred Stock or any class or series of Senior Securities or Parity Securities
or shares of any such class or series;

    (l)  issue any equity security below either the then current Market Price
(without deduction for any underwriters' discount) or the then-applicable
Conversion Price other than for (A) management stock options currently
authorized and available for grant for not more than Three Hundred Thousand
(300,000) shares of Common Stock in the aggregate, in which senior management of
the Company shall not participate, (B) management stock options exercisable at
not less than the then-applicable Conversion Price per share of Common Stock
issued after October 14, 1997, exercisable for not more than Five Hundred
Thousand (500,000) shares of Common Stock in the aggregate, in which only
certain members of senior management of the Company shall participate, and
(C) the Common Stock underlying such management stock options and other stock
options outstanding as of October 14, 1997; 

    (m)  declare or pay any dividend or make any distribution (including
without limitation by way of redemption, purchase or other acquisition) with
respect to shares of Capital Stock or any securities convertible into, or
exercisable, redeemable or exchangeable for, any share of Capital Stock
(including without limitation any Option or Convertible Security) directly or
indirectly, whether in cash, obligations or shares of the Company or other
property;

    (n)  acquire, in one or a series of related transactions, any equity
ownership interest or interests of any Person, where the aggregate consideration
payable in connection with such acquisition (including without limitation cash
consideration, the fair market value of any securities and the net present value
of any deferred consideration) is equal to or greater than $15 million;

    (o)  acquire any asset or assets of any Person in any transaction or
transactions, where the aggregate consideration payable in connection with any
single such transaction (including, without limitation, cash consideration, the
fair market value of any securities and the net present value of any deferred
consideration), whether such transaction is effected in a single transaction or
a series of related transactions, is greater than $15 million; PROVIDED,
HOWEVER, that this provision shall not apply to Capital Expenditures made by the
Company in the Ordinary Course of Business;

                                       20
<PAGE>

    (p)  merge or consolidate with any Person, or permit any other Person to
merge into it, where (i) the stockholders of the Company immediately prior to
the consummation of such merger or consolidation shall, immediately after the
consummation of such merger or consolidation, hold securities possessing more
than 50% of either the total voting power of and the beneficial ownership
interests in the surviving entity of such merger or consolidation and (ii) the
equity holders of the subject Person immediately prior to the consummation of
such transaction shall receive (directly or indirectly) aggregate consideration
payable in connection with such transaction (including without limitation cash
consideration, the fair market value of any securities and the net present value
of any deferred consideration) equal to or greater than $15 million, 

    (q)  cause or permit any Subsidiary to merge or consolidate with any Person
(other than the Company or a wholly-owned Subsidiary of the Company), or cause
or permit any other Person to merge into it, where: (i) the stockholders of such
Subsidiary immediately prior to the consummation of such merger or consolidation
shall, immediately after the consummation of such merger or consolidation, hold
securities possessing more than 50% of both the total voting power of and the
beneficial ownership interests in the surviving entity of such merger or
consolidation and (ii) the equity holders of the subject Person immediately
prior to the consummation of such transaction shall receive (directly or
indirectly) aggregate consideration payable in connection with such transaction
(including without limitation cash consideration, the fair market value of any
securities and the net present value of any deferred consideration) equal to or
greater than $15 million;

    (r)  substantially and materially engage in, either through acquisition or
internal development, any business other than the business of providing
diagnostic services to the healthcare industry;

    (s)  make or permit any of its Subsidiaries to make Capital Expenditures
any fiscal year in excess, in the aggregate, of two percent (2%) above the
approved Capital Budget Plan for such fiscal year of the Company unless such
expenditure is approved by the Executive Committee of the Board of Directors or
a Supermajority Vote of the Board of Directors of the Company; 

    (t)  (i) sell, transfer, convey, lease or dispose of, outside the Ordinary
Course of Business, any assets or properties of the Company or any Subsidiary,
whether now or hereafter acquired, in any transaction or transactions, if (X)
the aggregate consideration payable in connection with any single such
transaction (including, without limitation, cash consideration, the fair market
value of any securities and the net present value of any deferred
consideration), is greater than $5 million or (Y) the aggregate consideration
payable in connection with all such transactions (including, without limitation,
cash consideration, the fair market value of any securities and the net present
value of any deferred consideration), consummated after the Initial Issue Date,
taken as a whole, is or would become as a result of such transaction greater
than $20 million; (ii) undergo or cause or permit any Subsidiary to undergo a
reorganization or recapitalization; (iii) merge or consolidate with any Person,
or permit any other Person to merge into it, where the stockholders of the
Company immediately prior to the consummation of such

                                       21
<PAGE>

merger or consolidation shall, immediately after the consummation of such 
merger or consolidation, hold securities possessing 50% or less of either the 
total voting power of or the beneficial ownership interests in the surviving 
entity of such merger or consolidation; or (iv) cause or permit any 
Subsidiary to merge or consolidate with any other Person (other than the 
Company or a wholly-owned Subsidiary of the Company), or cause or permit any 
other Person to merge into such Subsidiary, where the stockholders of such 
Subsidiary immediately prior to the consummation of such merger or 
consolidation shall, immediately after the consummation of such merger or 
consolidation, hold 50% or less of either the total voting power of or the 
beneficial ownership interests in the surviving entity of such merger or 
consolidation, if (X) the value of the assets of such Subsidiary is greater 
than $5 million or (Y) the aggregate value of the assets of all such 
Subsidiaries with respect to all such mergers or consolidations consummated 
after the Initial Issue Date, taken as a whole, and including such 
transaction, is greater than $20 million;

    (u)  permit any Subsidiary of the Company to issue or sell any share of
Capital Stock, Option or Convertible Security; PROVIDED, HOWEVER, that the
Company may form a new Subsidiary not all of the equity securities of which need
be owned directly or indirectly by the Company (a "PARTIAL SUBSIDIARY"), but
only if (i) at the time of creation of such Partial Subsidiary, such Partial
Subsidiary is designated as such in a written notice to the holders of the
shares of Series C Preferred Stock, and, (ii) cumulatively through time no more
than $5,000 of assets (in the aggregate) are transferred to such Partial
Subsidiary by the Company or any other Subsidiary, and (iii) no liabilities of
such Partial Subsidiary are ever assumed or guaranteed by the Company or any
other Subsidiary; or

    (v)  issue any share of Series D Preferred Stock, otherwise than pursuant
to a Type B Conversion.

    The rights provided to holders of shares of Series C Preferred Stock in
this Section 11 shall be in addition to and not in lieu of the other rights and
protections granted to the holders of the shares of Series C Preferred Stock
hereunder.

    SECTION 12.    REISSUANCE OF SERIES C PREFERRED STOCK.

    Shares of Series C Preferred Stock that have been issued and reacquired or
converted in any manner, including shares purchased, redeemed, exchanged, or
converted into shares of Common Equity, shall (upon compliance with any
applicable provisions of the laws of Delaware) have the status of authorized but
unissued shares of preferred stock of the Company undesignated as to series and
may be designated or redesignated and issued or reissued, as the case may be, as
part of any series of preferred stock of the Company, provided that such shares
may not in any event be reissued as Series C Preferred Stock.

    SECTION 13.    BUSINESS DAY.

    If any payment, redemption or exchange shall be required by the terms
hereof to be made on a day that is not a Business Day, such payment, redemption
or exchange shall be made on the immediately succeeding Business Day.

                                       22
<PAGE>

    SECTION 14.    CERTAIN NOTIFICATION OBLIGATIONS.

    The Company will notify the Initial Purchaser of each subsequent sale or
disposition of any assets or properties of either the Company or any Subsidiary
(other than in the Ordinary Course of Business) once the aggregate consideration
payable in connection with all such sales or dispositions for the Company and
its Subsidiaries outside the Ordinary Course of Business (including without
limitation cash consideration, the fair market value of any securities and the
net present value of any deferred consideration) exceeds $10,000,000 in any
fiscal year.  

    SECTION 15.    PREEMPTIVE RIGHTS

    (a)  Subject to the terms and conditions specified in this Section 15, the
Company hereby grants to each holder of shares of Series C Preferred Stock a
right of first offer with respect to future sales in any transaction or proposed
transaction not involving a public offering by the Company of its shares of
Common Equity or any securities convertible or exchangeable, directly or
indirectly, into Common Equity (collectively, "PREEMPTIVE SECURITIES").  
Preemptive Securities shall include, without limitation, all shares of Common
Stock and all Convertible Securities.  

    (b)  Each time the Company proposes to offer any Preemptive Securities in a
transaction not involving a public offering of such Preemptive Securities, the
Company shall first make an offering of such Preemptive Securities to each
holder of shares of Series C Preferred Stock in accordance with the following
provisions:

         (1)  The Company shall deliver a notice by certified mail (the
    "PREEMPTIVE NOTICE") to each holder of shares of Series C Preferred Stock
    stating (i) its bona fide intention to offer Preemptive Securities, (ii)
    the number of such Preemptive Securities to be offered, and (iii) the price
    and terms, if any, upon which it proposes to offer such Preemptive
    Securities.  In addition, the Preemptive Notice will contain all other
    information which would be provided to prospective purchasers with respect
    to the proposed offering.

         (2)  With respect to any Type A Offering of Preemptive Securities, by
    written notification given by each holder of shares of Series C Preferred
    Stock within 15 Business Days from the date of the Preemptive Notice, each
    holder may elect to purchase or obtain, at the price and on the terms
    specified in the Preemptive Notice, up to that portion of such Preemptive
    Securities which equals the proportion that the number of shares of Common
    Stock issuable upon conversion of the shares of Series C Preferred Stock
    then held by such holder bears to the total number of shares of Common
    Stock of the Company then outstanding (assuming full conversion of all
    convertible securities, including without limitation the Series A Preferred
    Stock, Series B Preferred Stock and Series C Preferred Stock). 

         (3)  With respect to any Type B Offering of Preemptive Securities, by
    written notification given by each holder of shares of Series C Preferred
    Stock within 15 Business Days from the date of the Preemptive Notice, each
    holder may elect to purchase

                                       23
<PAGE>

    or obtain, at the price and on the terms specified in the Preemptive 
    Notice, up to that portion of such Preemptive Securities which equals the 
    proportion that the number of shares of Common Stock issuable upon 
    conversion of the shares of Series C Preferred Stock then held by such 
    holder bears to the number of shares of Common Stock of the Company into 
    which the outstanding shares of Series B Preferred Stock and the 
    outstanding shares of Series C Preferred Stock are then convertible.  

         (4)  If any of the holders of Series B Preferred Stock decline to
    exercise any right of refusal with respect to any offering to such holders
    of Series B Preferred Stock of any Preemptive Securities, such holders (the
    "DECLINING SERIES B HOLDERS") shall give written notification of such
    election to decline to exercise such rights to the Company within 15
    Business Days from the date of the Preemptive Notice.  Within 3 Business
    Days thereafter, the Company shall give written notification (the "DECLINED
    PREEMPTIVE SECURITIES NOTICE") to each holder of Series C Preferred Stock
    of the following: (i) the total number of shares of Preemptive Securities
    which the Declining Series C Holders declined to purchase (collectively,
    the "DECLINED PREEMPTIVE SECURITIES"), and (ii) the price and terms
    specified in the Preemptive Notice relating to such Declined Preemptive
    Securities.

         (5)  By written notification given by each holder of shares of Series
    C Preferred Stock within 3 Business Days from the date of the Declined
    Preemptive Securities Notice, each holder of Series C Preferred Stock may
    elect to purchase or obtain, at the price and on the terms specified by the
    Company for such sale of such Preemptive Securities, such Declined
    Preemptive Securities at the price and on the terms specified in the
    Preemptive Notice; PROVIDED, HOWEVER, that if the total number of Declined
    Preemptive Securities so elected to be purchased by such holders of Series
    C Preferred Stock pursuant hereto (collectively, the "ELECTING HOLDERS")
    exceeds the total number of Declined Preemptive Securities, each such
    Electing Holder shall purchase, and the Company shall sell to such Electing
    Holder, that portion of the total number of Declined Preemptive Securities
    which equals the proportion that the number of shares of Common Stock
    issuable upon conversion of the shares of Series C Preferred Stock then
    held by such holder bears to the number of shares of Common Stock of the
    Company into which the outstanding shares of all Electing Holders are then
    convertible.  

         (6)  If all Preemptive Securities referred to in any Preemptive Notice
    are not elected to be obtained as provided in Section 15(b)(2) or 15(b)(3),
    or Section 15(b)(4) or 15(b)(5), as applicable, the Company may, at any
    time after the latest date set forth above for the exercise of the right to
    purchase any such Preemptive Securities by any holder of Series C Preferred
    Stock (the "PREEMPTIVE RIGHT EXPIRATION DATE") to the date sixty (60) days
    from the Preemptive Right Expiration Date offer the remaining unsubscribed
    portion of such Preemptive Securities to any Person or Persons at a price
    equal to the price specified in the relevant Preemptive Notice.  If the
    Company does not enter into an agreement for the sale of the Preemptive
    Securities within sixty (60) days after the Preemptive Right Expiration
    Date, or if such agreement is not consummated within ninety (90) days of
    the Preemptive Right Expiration Date, the right provided under this

                                       24
<PAGE>

    Section 15 shall be deemed to be revived and such Preemptive Securities 
    shall not be offered unless first reoffered to each holder of shares of 
    Series C Preferred Stock in accordance herewith.

         (7)  The rights set forth in this Section 15 shall not be applicable
    to the issuance or sale of shares of Common Stock pursuant to Options
    approved by the Board to officers, directors and employees of the Company
    for the primary purpose of soliciting or retaining their employment or
    services.

    SECTION 16.    DEFINITIONS.

    As used in this Certificate, the following terms shall have the following 
meanings (with terms defined in the singular having comparable meanings when 
used in the plural and vice versa), unless the context otherwise requires:

    "AFFILIATE" of any specified Person means any other Person directly or 
indirectly controlling or controlled by or under direct or indirect common 
control with such specified Person.  For purposes of this definition, 
"control" (including, with correlative meanings, the terms "controlling," 
"controlled by" and "under common control with"), as used with respect to any 
Person, shall mean the possession, directly or indirectly, of the power to 
direct or cause the direction of the management or policies of such Person, 
whether through the ownership of voting securities, by agreement or 
otherwise; provided that beneficial ownership of a majority or more of the 
voting securities of a Person shall be deemed to be control.

    "AMENDED BYLAWS" means the Amended and Restated Bylaws of the Company, as 
in effect from time to time.

    "AGGREGATE VOTING LIMITATION" has the meaning set forth in Section 10(a). 

    "BOARD" or "BOARD OF DIRECTORS" means the Board of Directors of the 
Company.

    "BOARD OBSERVER" has the meaning set forth in Section 10(g).

    "BUSINESS DAY" means any day other than a Legal Holiday.

    "CAPITAL BUDGET PLAN" means, for each fiscal year of the Company, the 
plan of the Company for making Capital Expenditures for such fiscal year 
which has been approved for such fiscal year by either the Executive 
Committee or a Supermajority Vote of the Board of Directors of the Company.

    "CAPITAL EXPENDITURES" means, for any period, expenditures made by the 
Company or any of its Subsidiaries to acquire or construct fixed assets, 
plant and Fixtures and Equipment (including additions, improvements, upgrades 
and replacements, but excluding repairs) during such period calculated in 
accordance with GAAP.

                                       25
<PAGE>

    "CAPITAL LEASE OBLIGATION" means, at the time any determination thereof 
is to be made, the amount of the liability in respect of a lease that would 
at such time be required to be capitalized on a balance sheet in accordance 
with GAAP.

    "CAPITAL STOCK" means (i) in the case of a corporation, corporate stock, 
(ii) in the case of an association or business entity, any and all shares, 
interests, participations, rights or other equivalents (however designated) 
of corporate stock, (iii) in the case of a partnership, partnership interests 
(whether general or limited) and (iv) any other interest or participation 
that confers on a Person the right to receive a share of the profits and 
losses of, or distributions of assets of, the issuing Person.

    "CERTIFICATE OF INCORPORATION" means the certificate of incorporation (as 
defined in Section 104 of the Delaware General Corporation Law) of the 
Company in effect on the date hereof, including, without limitation, the 
Series A, Series B, Series C and Series D Certificates of Designation.

    "CHANGE OF CONTROL" with respect to a Person shall be deemed to have 
occurred (i) at such time as any person (as defined in Section 13(d)(3) of 
the Securities Exchange Act of 1934) at any time shall directly or indirectly 
acquire more than 40% in outstanding voting power of such Person, (ii) at 
such time as during any one year period, individuals who at the beginning of 
such period constitute such Person's Board of Directors or other governing 
body cease to constitute at least a majority of such board or governing body 
(provided, however, that a change in directors upon a Type B Event Date shall 
not be deemed to cause a Change in Control pursuant to this clause (ii)), 
(iii) upon consummation of a merger or consolidation of such Person into or 
with another Person in which the shareholders of the subject Person 
immediately prior to the consummation of such transaction shall own less than 
Fifty Percent (50%) of the voting securities of the surviving Person (or the 
parent corporation of the surviving Person where the surviving Person is 
wholly-owned by the parent corporation) immediately following the 
consummation of such transaction or (iv) the sale, transfer or lease of all 
or substantially all of the assets of such Person, in any of cases (i), (ii), 
(iii) or (iv) in a single transaction or series of related transactions; 
PROVIDED, that no Change of Control hereunder with respect to the Company 
shall be deemed to occur solely by reason of (x) the ownership by the Initial 
Purchaser or any Affiliate thereof or the Majority Holders of the Series C 
Preferred Stock or any Affiliate thereof of any Capital Stock of the Company 
or (y) the conversion of shares of Series C Preferred Stock into either 
Series D Preferred Stock (and any change in the Board of Directors incident 
thereto) or Common Stock, or (z) the conversion of shares of Series D 
Preferred Stock into Common Stock. 

    "COMMITTEES" has the meaning set forth in Section 10(e).

    "COMMON EQUITY" means all shares now or hereafter authorized of any class 
of common stock of the Company (including the Common Stock) and any other 
stock of the Company, however designated, authorized after the date hereof, 
which has the right (subject always to prior rights of any class or series of 
preferred stock) to participate in any distribution of the assets or earnings 
of the Company without limit as to per share amount.

                                       26
<PAGE>

    "COMMON STOCK" has the meaning set forth in Section 3(a). 

    "COMMON STOCK DIRECTOR" means, for any period prior to any Type B Event 
Date, any director other than the Joint Director or a director elected by the 
holders of the Series B Preferred Stock or the Series C Preferred Stock.

    "COMPANY" means InSight Health Services Corp., a Delaware corporation.

    "CONVERSION DATE" means (i) in the event of a Type A Conversion, the date 
set forth in Section 5(a) (in the event of a partial conversion relating to a 
Partial Conversion Event) or Section 5(b) (in the event of any other 
conversion pursuant to Section 5), and (ii) in the event of a Type B 
Conversion, the date of receipt by the Company of the relevant Type B 
Conversion Notice.

    "CONVERSION DIRECTORS" has the meaning set forth in Section 10.

    "CONVERSION PRICE" has the meaning set forth in Section 8.

    "CONVERTIBLE SECURITY" means any stock or securities, directly or 
indirectly, convertible into or exchangeable for Common Equity, including 
without limitation any exchangeable debt securities.

    "CORPORATE CHANGE" has the meaning set forth in Section 8(e).

    "CREDIT FACILITY" means a credit facility to which the Company is a party 
with NationsBank, N.A.

    "DECLINED PREEMPTIVE SECURITIES" has the meaning set forth in Section 
15(b)(4).

    "DECLINED PREEMPTIVE SECURITIES NOTICE" has the meaning set forth in 
Section 15(b)(4).

    "DECLINING SERIES B HOLDERS" has the meaning set forth in Section 
15(b)(4).

    "ELECTING HOLDERS" has the meaning set forth in Section 15(b)(5).

    "ENCUMBRANCE" means any claim, lien, pledge, option, charge, easement, 
security interest, right-of-way, encumbrance or other right of third parties, 
and, with respect to any securities, any agreements, understandings or 
restrictions affecting the voting rights or other incidents of record or 
beneficial ownership pertaining to such securities.

    "FIRST MEETING" means the meeting of the newly constituted Board of 
Directors to be held two calendar days after a Type B Event Date, at the 
principal offices of the Corporation.

    "FISCAL YEAR" means each year ending June 30, or any other fiscal year as 
approved by the Board of Directors.

                                       27
<PAGE>

    "FIXTURES AND EQUIPMENT" means all of the furniture, fixtures, 
furnishings, machinery, equipment and other tangible assets owned by the 
Company or any Subsidiary that are material to the conduct of their 
businesses as currently conducted.

    "GAAP" means generally accepted accounting principles set forth in the 
opinions and pronouncements of the Accounting Principles Board of the 
American Institute of Certified Public Accountants and statements and 
pronouncements of the Financial Accounting Standards Board or in such other 
statements by such other entity as have been approved by a significant 
segment of the accounting profession, which are in effect as of the Initial 
Issue Date.

    "INDEBTEDNESS" means, as to any Person without duplication, (a) all items 
which, in accordance with GAAP, would be included as a liability on the 
balance sheet of such Person and its Subsidiaries (including any obligation 
of such Person to the issuer of any letter of credit for reimbursement in 
respect of any drafts drawn under such letter of credit), excluding 
obligations in respect of deferred taxes and deferred employee compensation 
and benefits, and anything in the nature of capital stock, surplus capital 
and retained earnings; (b) the amount available for drawing under all letters 
of credit issued for the account of such Person; (c) Capital Lease 
Obligations of such Person; and (d) all obligations of other Persons that 
such Person has guaranteed, including, without limitation, all obligations of 
such Person consisting of recourse liabilities with respect to accounts 
receivable sold or otherwise disposed of by such Person; provided, however, 
that the term Indebtedness shall not include trade accounts payable (other 
than for borrowed money) arising in, and accrued expenses incurred in, the 
ordinary course of business of such Person, provided the same are not more 
than sixty (60) days overdue or are being contested in good faith.

    "INDEPENDENT" means any Person who is not an officer or employee of the 
Company or any Subsidiary or other Affiliate of the Company or otherwise paid 
any compensation or remuneration by the Company or any Subsidiary or other 
Affiliate of the Company other than director's fees.

    "INITIAL ISSUE DATE" means October 14, 1997.

    "INITIAL PURCHASER" shall mean the Person to whom shares of Series C 
Preferred Stock are initially issued by the Company.

    "JOINT DIRECTOR" has the meaning set forth in Section 10(b)(4).

    "JUNIOR SECURITIES" has the meaning set forth in Section 2.

    "LEGAL HOLIDAY" means a Saturday, a Sunday or a day on which banking 
institutions in the Company's principal place of business, the City of New 
York or at a place of payment are authorized by law, regulation or executive 
order to remain closed.  If a payment date is a Legal Holiday at a place of 
payment, payment may be made at that place on the next succeeding day that is 
not a Legal Holiday, and no interest shall accrue for the intervening period.

                                       28
<PAGE>

    "LIEN" means any lien, mortgage, deed of trust, pledge, security 
interest, charge or encumbrance of any kind (including any conditional sale 
or other title retention agreement, any lease in the nature thereof and any 
agreement to give any security interest).

    "LIQUIDATING DIVIDEND" has the meaning set forth in Section 8(g).

    "LIQUIDATING EVENT" has the meaning set forth in Section 4(b).

    "LIQUIDATION PREFERENCE" has the meaning set forth in Section 4(a).

    "MAJORITY HOLDERS," at any time, and with respect to any class or series 
of Capital Stock of the Company, means holders of a majority of the shares of 
such class or series then outstanding.  If the term is used without reference 
to a particular class or series of Capital Stock of the Company, it means 
Majority Holders of the Series C Preferred Stock.

    "MARKET PRICE" means as to any security the average of the closing prices 
of any such security's sales on all domestic securities exchanges on which 
such security may at the time be listed, or, if there have been no sales on 
any such exchange on any day, the average of the highest bid and lowest asked 
prices on all such exchanges at the end of such day, or, if on any day such 
security is not so listed, the average of the representative bid and asked 
prices quoted in Nasdaq as of 4:00 P.M., New York time, on such day, or, if 
on any day such security is not quoted in Nasdaq, the average of the highest 
bid and lowest asked prices on such day in the domestic over-the-counter 
market as reported by the National Quotation Bureau, Incorporated, or any 
similar successor organization, in each such case averaged over a period of 
twenty-one (21) Business Days consisting of the day as of which "Market 
Price" is being determined and the twenty (20) consecutive Business Days 
prior to such day; provided that if such security is listed on any domestic 
securities exchange the term "Business Days" as used in this sentence means 
business days on which such exchange is open for trading.  If at any time 
such security is not listed on any domestic securities exchange or quoted in 
Nasdaq or the domestic over-the-counter market, the "Market Price" shall be 
the fair value thereof determined by the Company and approved by the Majority 
Holders; provided that if such parties are unable to reach agreement within a 
reasonable period of time, such fair value shall be determined by an 
appraiser jointly selected by the Company and the Majority Holders.  The 
determination of such appraiser shall be final and binding on the Company and 
holders of the shares of Series C Preferred Stock, and the fees and expenses 
of such appraiser shall be paid by the Company.

    "OPERATING LEASE" shall mean any lease with respect to which the 
obligations of the lessee thereunder are, at the time any determination 
thereof is to be made, not required to be capitalized on the lessee's balance 
sheet in accordance with GAAP.

    "OPTION" shall mean any rights or options to subscribe for or purchase 
Common Equity or Convertible Securities.

    "ORDINARY COURSE OF BUSINESS" shall mean the ordinary course of business 
for a company engaged in the business of providing diagnostic services to the 
healthcare industry as so provided by the Company as of the Initial Issue 
Date; provided, that all sales by the Company or any

                                       29
<PAGE>

Subsidiary, as the case may be, of inventory and sales of Fixtures and 
Equipment no longer used or useful in such business shall be deemed to be in 
the Ordinary Course of Business.

    "PARITY SECURITIES" has the meaning set forth in Section 2.

    "PARTIAL CONVERSION EVENT" means (i) the consummation of the sale by any 
holder of its shares of Series C Preferred Stock to a third party at any time 
approved by the Board, (ii) the consummation of a public offering of the 
Common Stock at any time and (iii) at any time following April 14, 1999, the 
consummation of a private sale of Common Stock.

    "PARTIAL SUBSIDIARY" has the meaning set forth in Section 11(u).

    "PERSON" means any individual, corporation, partnership, joint venture, 
association, limited liability company, joint-stock company, trust, 
unincorporated organization or government or agency or political subdivision 
thereof (including any subdivision or ongoing business of any such entity or 
substantially all of the assets of any such entity, subdivision or business).

    "PREEMPTIVE NOTICE" has the meaning set forth in Section 15(b).

    "PREEMPTIVE RIGHT EXPIRATION DATE" has the meaning set forth in Section 
15(b)(6).

    "PREEMPTIVE SECURITIES" has the meaning set forth in Section 15(a).

    "PREFERRED STOCK DIRECTORS" means the Series B Director and the Series C 
Directors.

    "SECURITIES PURCHASE AGREEMENT" means the Securities Purchase Agreement 
dated as of October 14, 1997 between the Company and the Initial Purchaser.

    "SENIOR SECURITIES" has the meaning set forth in Section 2.

    "SERIES A PREFERRED STOCK" has the meaning set forth in Section 2.

    "SERIES B DIRECTOR" has the meaning set forth in Section 10.

    "SERIES B PREFERRED STOCK" has the meaning set forth in Section 1.

    "SERIES C DIRECTOR" has the meaning set forth in Section 10.

    "SERIES C PREFERRED STOCK" has the meaning set forth in Section 2.

    "SERIES D PREFERRED STOCK" has the meaning set forth in Section 2.

    "SPECIAL CORPORATE EVENT" with respect to a Person shall be deemed to 
have occurred (i) at such time as any person (as defined in Section 13(d)(3) 
of the Securities and Exchange Act of 1934) at any time shall directly or 
indirectly acquire more than 20% in outstanding voting power of such Person, 
(ii) at such time as during any one year period, individuals who at the 
beginning of such period constitute such Person's Board of Directors or other 
governing body cease to

                                       30
<PAGE>

constitute at least a majority of such board or governing body (provided, 
however, that a change in directors upon a Type B Event Date shall not be 
deemed to cause a Special Corporate Event pursuant to this clause (ii)), 
(iii) upon consummation of a merger or consolidation of such Person into or 
with another Person in which the shareholders of the subject Person 
immediately prior to the consummation of such transaction shall own less than 
Fifty Percent (50%) of the voting securities of the surviving Person (or the 
parent corporation of the surviving Person where the surviving Person is 
wholly-owned by the parent corporation) immediately following the 
consummation of such transaction or (iv) the sale, transfer or lease of all 
or substantially all of the assets of such Person, in any of cases (i), (ii), 
(iii) or (iv) in a single transaction or series of related transactions; 
provided, that no Special Corporate Event hereunder with respect to the 
Company shall be deemed to occur solely by reason of the ownership by the 
Initial Purchaser or any Affiliate thereof or the Majority Holders of the 
Series C Preferred Stock or any Affiliate thereof of any Capital Stock of the 
Company. 

    "SUBSIDIARY" means, with respect to any Person, (a) any corporation of 
which at least a majority in interest of the outstanding voting stock (having 
by the terms thereof voting power under ordinary circumstances to elect a 
majority of the directors of such corporation, irrespective of whether or not 
at the time stock of any other class or classes of such corporation shall 
have or might have voting power by reason of the happening of any 
contingency) is at the time, directly or indirectly, owned or controlled by 
such Person, by one or more Subsidiaries of such Person or by such Person and 
one or more of its Subsidiaries, or (b) any corporate or non-corporate entity 
in which such Person, one or more Subsidiaries of such Person, or such person 
and one or more Subsidiaries of such Person, directly or indirectly, at the 
date of determination thereof, has an ownership interest and one hundred 
percent (100%) of the revenue of which is included in the consolidated 
financial reports of such Person consistent with GAAP.

    "SUPERMAJORITY VOTE" means the affirmative vote of six (6) directors of 
the Company with respect to the matter subject to such vote.

    "SUPERVOTING SECURITIES" means any class or series of the Company's 
Capital Stock the holders of which have the right to cast more than one vote 
per share and/or have the right to elect one or more members of the Board of 
Directors, voting as a class or series.

    "TYPE A CONVERSION" means a conversion of shares of Series C Preferred 
Stock into shares of Common Stock pursuant to Section 5 hereof.

    "TYPE A OFFERING OF PREEMPTIVE SECURITIES" means any proposed offering by 
the Company of Preemptive Securities in which the proposed sale price 
reflects a price per share of Common Stock at or above the higher of (i) the 
Market Price per share of Common Stock, determined as of the date of the 
Preemptive Notice relating to such offering and (ii) $8.375 per share of 
Common Stock.

    "TYPE B CONVERSION" means a conversion of shares of Series C Preferred 
Stock into shares of Series D Preferred Stock pursuant to Section 6 hereof.

    "TYPE B CONVERSION NOTICE" has the meaning set forth in Section 6(b).

                                       31
<PAGE>

    "TYPE B EVENT DATE" has the meaning set forth in Section 6(b).

    "TYPE B OFFERING OF PREEMPTIVE SECURITIES" means any proposed offering by 
the Company of Preemptive Securities in which the proposed sale price 
reflects a price per share of Common Stock below the higher of (i) the Market 
Price per share of Common Stock, determined as of the date of the Preemptive 
Notice relating to such offering and (ii) $8.375 per share of Common Stock.

    "TYPE B TRIGGER DATE" means the date one year after the initial borrowing 
of funds under the Credit Facility.

    IN WITNESS WHEREOF, InSight Health Services Corp. has caused this 
Certificate to be executed by its Executive Vice President and Secretary this 
14th day of October, 1997.


                                       INSIGHT HEALTH SERVICES CORP.


                                       By:  /s/ Thomas V. Croal
                                            ----------------------------------
                                       Name:  Thomas V. Croal
                                       Office:  Executive Vice President
                                                    and Secretary



                                       32

<PAGE>
                                                                  Exhibit 7

                            INSIGHT HEALTH SERVICES CORP.

                  CERTIFICATE OF DESIGNATION, PREFERENCES AND RIGHTS
                       OF CONVERTIBLE PREFERRED STOCK, SERIES D

                (Pursuant to Section 151(g) of the General Corporation
                            Law of the State of Delaware.)

    InSight Health Services Corp., a corporation organized and existing under 
the laws of the State of Delaware (hereinafter the "Company"), DOES HEREBY 
CERTIFY THAT, pursuant to authority conferred upon the Board of Directors of 
the Company (the "Board") by the certificate of incorporation of the Company, 
as amended, the Board unanimously adopted the following resolutions on 
October 14, 1997 authorizing the issuance of the Series D Convertible 
Preferred Stock of the Company, which resolutions are still in full force and 
effect and are not in conflict with any provisions of the certificate of 
incorporation or bylaws of the Company: 

    RESOLVED, that pursuant to authority vested in the Board by the 
Certificate of Incorporation, the Board does hereby establish a series of 
preferred stock of the Company from the Company's authorized class of 
3,500,000 shares of $.001 par value preferred shares, such series to consist 
of 632,266 shares, and does hereby fix and state the voting rights, 
designation, powers, preferences and relative participating, optional or 
other special rights and the qualifications, limitations or restrictions 
thereof, as follows:

    SECTION 1.     DESIGNATION.  

    The Preferred Stock created and authorized hereby shall be designated as 
the "Convertible Preferred Stock, Series D" (hereinafter called the "SERIES D 
PREFERRED STOCK").  The number of shares of Series D Preferred Stock shall be 
632,266 and no more, provided, however, that the Board of Directors of the 
Company may increase the number of shares of Series D Preferred Stock 
pursuant to Section 151(g) of the Delaware General Corporation Law, but only 
in accordance with the provisions of Section 7(c) of the Series B Certificate 
of Designation and Section 7(c) of the Series C Certificate of Designation.

    SECTION 2.     RANK.

    The Series D Preferred Stock shall, with respect to dividend 
distributions and distributions upon the liquidation, winding up and 
dissolution of the Company, rank senior to all classes of Common Equity of 
the Company, and to each other class or series of Capital Stock of the 
Company (except for the Convertible Preferred Stock, Series A (hereinafter 
called the "SERIES A PREFERRED STOCK")) the terms of which do not expressly 
provide that it ranks senior to or on a parity with the Series D Preferred 
Stock as to dividend distributions and distributions upon the liquidation, 
winding up and dissolution of the Company (collectively referred to with the 
Common Equity of the Company as "JUNIOR SECURITIES").  The Series D Preferred 
Stock shall, with respect to dividend distributions and distributions upon 
the liquidation, winding up and dissolution of the Company, rank on a parity 
with any class or series of Capital Stock hereafter

<PAGE>

created which expressly provides that it ranks on a parity with the Series D 
Preferred Stock as to dividend distributions and distributions upon the 
liquidation, winding up and dissolution of the Company (shares of such a 
class or series, together with shares of the Series A Preferred Stock, shares 
of the Convertible Preferred Stock, Series B (the "SERIES B PREFERRED 
STOCK"), and shares of the Convertible Preferred Stock, Series C (the "SERIES 
C PREFERRED STOCK") are, collectively, the "PARITY SECURITIES").  The Series 
D Preferred Stock shall, with respect to dividend distributions and 
distributions upon the liquidation, winding up and dissolution of the 
Company, rank junior to each class or series of Capital Stock hereafter 
issued in accordance with Section 10 hereof and which expressly provides that 
it ranks senior to the Series D Preferred Stock as to dividend distributions 
or distributions upon the liquidation, winding up and dissolution of the 
Company ("SENIOR SECURITIES"). Any purported Supervoting Securities that were 
not created, authorized or issued in accordance with Section 10 hereof shall 
be deemed for all purposes related to voting rights to be identical to Common 
Stock, including, without limitation, as to voting rights with respect to the 
election of directors and all other matters submitted to a vote of 
stockholders.

    SECTION 3.     DIVIDENDS.

    (a)  The Company may (when, as and if declared by the Board of Directors 
of the Company) declare and pay dividends, out of the entire assets and funds 
of the Company legally available therefor, to the holders of the Series A 
Preferred Stock, the Series B Preferred Stock, the Series C Preferred Stock, 
the Series D Preferred Stock and the common stock, $.001 par value per share, 
of the Company (the "COMMON STOCK") ratably based on the number of shares of 
Common Stock held by each such Holder (assuming full conversion of all such 
shares of Series A Preferred Stock, Series B Preferred Stock, Series C 
Preferred Stock, and Series D Preferred Stock into Common Stock).

    (b)  Holders of shares of the Series D Preferred Stock shall be entitled 
to receive the dividends provided for in Section 3(a) hereof in preference to 
and in priority over any dividends upon any of the Junior Securities, except 
for the Common Stock.

    (c)  Holders of shares of the Series D Preferred Stock shall be entitled 
to receive the dividends provided for in Section 3(a) hereof on a pro rata 
basis with respect to any dividends upon any Parity Securities.

    SECTION 4.     LIQUIDATION PREFERENCE.

    (a)  Upon any Liquidating Event with respect to the Company, the Holders 
of shares of Series D Preferred Stock then outstanding shall be entitled to 
be paid, out of the assets of the Company available for distribution to its 
stockholders, $.001 per share of Series D Preferred Stock (the "LIQUIDATION 
PREFERENCE"), plus an amount in cash equal to any declared but unpaid 
dividends thereon, before any payment shall be made or any assets distributed 
to the holders of any of the Junior Securities, including, without 
limitation, Common Stock.  In addition, holders of shares of Series D 
Preferred Stock shall be entitled to receive any distribution in the event of 
liquidation, dissolution or winding up of the affairs of the Company pari 
passu with shares of Common Stock, on a pro rata basis (assuming full 
conversion of all shares of Series D Preferred Stock into Common Stock).  If 
the assets of the Company are not sufficient to pay in full the

                                       2
<PAGE>

liquidation payments payable to the holders of outstanding shares of the 
Series D Preferred Stock and all Parity Securities, then the holders of all 
such shares shall share equally and ratably in such distribution of assets of 
the Company in accordance with the amounts which would be payable on such 
distribution if the amount to which the holders of outstanding shares of 
Series D Preferred Stock and the holders of outstanding shares of all Parity 
Securities are entitled were paid in full.

    (b)  "LIQUIDATING EVENT" shall mean, with respect to any Person, any of 
the following events:  (i) the commencement by such Person of a voluntary 
case under the bankruptcy laws of the United States, as now or hereafter in 
effect, or the commencement of an involuntary case against such Person with 
respect to which the petition shall not be controverted within 15 days, or be 
dismissed within 60 days, after commencement thereof; (ii) the appointment of 
a custodian for, or the taking charge by a custodian of, all or substantially 
all of the property of such Person; (iii) the commencement by such Person of 
any proceeding under any reorganization, arrangement, adjustment of debt, 
relief of debtors, dissolution, insolvency or liquidation or similar law of 
any jurisdiction whether now or hereafter in effect relating to such Person; 
(iv) the commencement against such Person of any proceeding set forth in the 
preceding clause (iii), which is not controverted within 10 days thereof and 
dismissed within 60 days after the commencement thereof; (v) the adjudication 
of such Person insolvent or bankrupt, or the adoption by such Person of a 
plan of liquidation; (vi) the occurrence of any Change of Control with 
respect to such Person or (vii) the filing of a certificate of dissolution in 
respect of the Company with the Secretary of State of the State of Delaware; 
in any of cases (i) through (vi) above, in a single transaction or series of 
related transactions. 

    SECTION 5.     CONVERSION

    (a)  Each holder of Series D Preferred Stock shall have the right, at its 
option, to convert, subject to the terms and provisions of this Section 5, 
all or any part of its Series D Preferred Stock then outstanding into such 
number of fully paid and non-assessable shares of Common Stock as results 
from multiplying the number of shares of Series D Preferred Stock to be 
converted by the Conversion Multiple.  The person or persons entitled to 
receive the shares of Common Stock upon conversion of such shares of Series D 
Preferred Stock shall be treated for all purposes as having become the record 
holder or holders of such shares of Common Stock on the date such holder or 
holders deliver certificates representing the shares of Series D Preferred 
Stock to be converted to the Company as set forth in Section 5(b) below (the 
"CONVERSION DATE").

    (b)  In order to convert all or any portion of its outstanding Series D 
Preferred Stock into shares of Common Stock, the holder of such Series D 
Preferred Stock shall deliver certificates representing the shares of Series 
D Preferred Stock to be converted to the Company at its principal office, 
together with written notice that it elects to convert those shares of Series 
D Preferred Stock into shares of Common Stock in accordance with the 
provisions of this Section 5.  Such notice shall specify the number of shares 
of Series D Preferred Stock to be converted and the name or names in which 
the holder wishes the certificates for shares of Common Stock to be 
registered.

                                       3
<PAGE>

    SECTION 6.     GENERAL PROVISIONS RELATING TO CONVERSION

    The following provisions shall be applicable to any conversion pursuant 
to Section 5 hereof.

    (a)  As promptly as practicable after the surrender as hereinabove 
provided of certificates representing shares of Series D Preferred Stock 
converted or to be converted into shares of Common Stock, the Company shall 
deliver or cause to be delivered to the holder, or the holder's designee, 
certificates representing the number of fully paid and non-assessable shares 
of Common Stock into which the shares of Series D Preferred Stock are 
converted, and, if less than the entire number of shares of Series D 
Preferred Stock represented by the certificate or certificates surrendered is 
to be converted, a new certificate for the number of shares of Series D 
Preferred Stock not so converted.  So long as any shares of Series D 
Preferred Stock remain outstanding, the Company shall not close its Common 
Stock transfer books.  The issuance of certificates representing shares of 
Common Stock issued upon the conversion of shares of Series D Preferred Stock 
shall be made without charge to the holder of Series D Preferred Stock for 
any tax in respect of the issuance of such certificates (other than any 
transfer, withholding or other tax if the shares of Common Stock are to be 
registered in a name different from that of the registered holder of Series D 
Preferred Stock).

    (b)  No fractional shares of Common Stock or scrip representing 
fractional shares of Common Stock shall be issued upon any conversion of any 
shares of Series D Preferred Stock, and the number of shares of Common Stock 
to be issued shall be rounded up to a whole share.  

    (c)  The Company shall at all times reserve and keep available out of its 
authorized but unissued shares of Common Stock, solely for the purpose of 
effecting the conversion of shares of Series D Preferred Stock and the 
exercise of the Warrants and the GE Warrants, the full number of whole shares 
of Common Stock then deliverable upon the conversion of all shares of Series 
D Preferred Stock then outstanding and the issuance of Common Stock in 
respect of the Warrants and the GE Warrants.  The Company shall take at all 
times such corporate action as shall be necessary in order that the Company 
may validly and legally issue fully paid and non-assessable shares of Common 
Stock upon the conversion of shares of Series D Preferred Stock and the 
exercise of the then outstanding Warrants and GE Warrants.  If at any time 
the number of authorized but unissued shares of Common Stock shall not be 
sufficient to effect the conversion of all then outstanding shares of the 
Series D Preferred Stock and the exercise of all the then outstanding 
Warrants and GE Warrants, in addition to such other remedies as shall be 
available to the holders of the Series B Preferred Stock, Series C Preferred 
Stock, and Series D Preferred Stock, the Company shall forthwith take such 
corporate action as may be necessary to increase its authorized but unissued 
shares of Common Stock to such numbers of shares as shall be sufficient for 
such purpose, including but not limited to promptly calling and holding a 
meeting of the Company's stockholders, at which the Company's stockholders 
shall vote on a proposed amendment to the Certificate of Incorporation that 
would so increase the number of authorized shares of Common Stock, a 
favorable vote for which amendment shall have been recommended to the 
Company's stockholders by the Board of Directors, pursuant to a duly and 
validly adopted resolution of the Board of Directors setting forth the 
amendment proposed and

                                       4
<PAGE>

declaring its advisability, all in accordance with Section 242 of the 
Delaware General Corporation Law.

    (d)  If any shares of Common Stock to be reserved for the purpose of 
conversion of Series D Preferred Stock require registration or listing with, 
or approval of, any governmental authority, stock exchange, NASD, Inc., 
Nasdaq or other regulatory body under any federal or state law, federal or 
state regulation, rule of NASD, Inc., Nasdaq or otherwise, before such shares 
may be validly issued or delivered upon conversion, the Company shall, in 
good faith and as expeditiously as practicable, endeavor to secure such 
registration, listing or approval, as the case may be.

    (e)  All shares of Common Stock that may be issued upon conversion of the 
Series D Preferred Stock shall upon issuance by the Company be validly 
issued, fully paid and non-assessable and free from all taxes, liens and 
charges with respect to the issuance thereof.

    (f)  In the event of any taking by the Company of a record of the holders 
of any class of Capital Stock for the purpose of determining the holders 
thereof who are entitled to receive any dividend or other distribution, any 
right to subscribe for, purchase or otherwise acquire any shares of Capital 
Stock or any other securities or property, or to receive any other right, the 
Company shall mail to each holder of Series D Preferred Stock, at least 20 
days prior to the date specified therein, a notice specifying the date on 
which any such record is to be taken for the purpose of such dividend, 
distribution or right, and the amount and character of such dividend, 
distribution or right. 

    (g)  The Company shall not, by amendment of its Certificate of 
Incorporation or through any reorganization, transfer of assets, 
consolidation, merger, dissolution, issuance or sale of securities or any 
other action, avoid or seek to avoid the observance or performance of any of 
the terms to be observed or performed hereunder by the Company, but shall at 
all times in good faith assist in the carrying out of all the provisions of 
this Section 6 and Sections 5 and 7 and in the taking of all such action as 
may be necessary or appropriate in order to protect the conversion rights of 
the holders of the shares of Series D Preferred Stock against impairment of 
any kind.

    SECTION 7.     CONVERSION MULTIPLE.  

    (a)  As used herein, the "CONVERSION MULTIPLE" shall initially be ten 
(10), subject to adjustment as set forth below.  

    (b)  If the Company at any time subdivides (by any stock split, stock 
dividend, reclassification, recapitalization or otherwise) one or more 
classes or series of its outstanding shares of Common Equity into a greater 
number of shares, the Conversion Multiple in effect immediately prior to such 
subdivision shall be proportionately increased.  If the Company at any time 
combines (by reverse stock split or otherwise) one or more classes or series 
of its outstanding shares of Common Stock into a smaller number of shares, 
the Conversion Multiple in effect immediately prior to such combination shall 
be proportionately decreased.

                                       5
<PAGE>

    (c)  Any recapitalization, reorganization, reclassification, 
consolidation, merger, sale of all or substantially all of the Company's 
assets or other transaction, in each case which is effected in such a way 
that the holders of Common Equity are entitled to receive (either directly or 
upon subsequent liquidation) stock, securities, cash, debt instruments or 
assets with respect to or in exchange for Common Equity is referred to herein 
as a "CORPORATE CHANGE." In case of any Corporate Change, each share of 
Series D Preferred Stock then outstanding will become convertible only into 
the kind and amount of securities, cash and other property receivable upon 
such Corporate Change by the holder of the number of shares of Common Stock 
into which such share of Series D Preferred Stock was convertible immediately 
prior thereto (assuming such holder of Common Stock failed to exercise any 
rights of election).  The Company shall not effect any such consolidation, 
merger or sale, unless prior to the consummation thereof, the successor 
entity (if other than the Company) resulting from such consolidation or 
merger or the entity purchasing such assets assumes by written instrument the 
obligation to deliver to the holders of shares of Series D Preferred Stock 
such shares of stock, securities, cash, debt instruments or assets as, in 
accordance with the foregoing provisions, such holder may be entitled to 
acquire.

    (d)  If any event occurs of the type contemplated by the provisions of 
this Section 7 but not expressly provided for by such provisions, then the 
Company's Board of Directors shall make an appropriate adjustment in the 
Conversion Multiple so as to protect the rights of the holders of the shares 
of Series D Preferred Stock; provided that no such adjustment shall decrease 
the Conversion Multiple obtainable as otherwise determined pursuant to this 
Section 7.

    (e)  If the Company declares or pays a dividend upon the Common Equity 
payable otherwise than out of earnings or earned surplus (determined in 
accordance with generally accepted accounting principles, consistently 
applied) except for a stock dividend payable in shares of Common Stock (a 
"LIQUIDATING DIVIDEND"), then the Company shall pay to each holder of a share 
of Series D Preferred Stock at the time of payment thereof the Liquidating 
Dividend which would have been paid to such holder on the Common Stock such 
holder would have owned had such holder fully exercised its right to convert 
the shares of Series D Preferred Stock into shares of Common Stock 
immediately prior to the date on which a record is taken for such Liquidating 
Dividend, or, if no record is taken, the date as of which the record holders 
of Common Equity entitled to such dividends are to be determined.

    SECTION 8.     NO REDEMPTION.  

         The shares of Series D Preferred Stock shall not be subject to 
mandatory redemption by the Company.

    SECTION 9.     VOTING RIGHTS AND RELATED PROVISIONS.

    (a)  Shares of Series D Preferred Stock (i) shall only be issuable to 
holders of shares of Series B Preferred Stock and Series C Preferred Stock 
and (ii) shall only be issuable upon the terms and conditions set forth in 
the Series B Certificate of Designation and Series C Certificate of 
Designation. The holders of shares of the Series D Preferred Stock shall have 
the right to vote with the holders of Common Stock with respect to all 
matters submitted to a shareholder vote (except for the election of 
directors, which will be governed by Sections 9(b) through 9(f)

                                       6
<PAGE>

below), with each share of Series D Preferred Stock having the number of 
votes equal to the number of shares of Common Stock into which such share of 
Series D Preferred Stock then is convertible.

    (b)  Upon a Type B Event Date, without any action on the part of the 
Company or the Board, the number of members of the Board shall be increased 
automatically by the smallest whole number that will result in at least the 
Type B Percentage (but less than 66 2/3%) of the members of the Board being 
Series D Directors.  Immediately following such Type B Event Date, the 
holders of Series D Preferred Stock shall have the right to elect all of such 
number of new directors (the "CONVERSION DIRECTORS"), such election to occur 
pursuant to the Series D Selection Procedure.  The Conversion Directors shall 
immediately upon such election become members of the Board of Directors as 
Series D Directors. The term of the Conversion Directors shall run until the 
third annual meeting of stockholders following the Type B Event Date.  
"SERIES D DIRECTORS" shall mean, collectively, any Preferred Stock Directors 
and any Conversion Directors.  After a Type B Event Date and until the 
expiration of the terms of office of directors serving as members of the 
board of directors immediately prior to the second annual meeting of 
stockholders following a Type B Event Date, the board of directors shall 
comprise:  (i) one Joint Director; (ii) three Preferred Stock Directors; 
(iii) not less than four (4) nor more than five (5) additional directors 
elected by holders of shares of Common Equity and (iv) the Conversion 
Directors.  At and after the second annual meeting of stockholders after the 
Type B Event Date, upon expiration of the term of any director, such position 
shall be subject to election by holders of shares of Common Stock and Series 
D Preferred Stock, voting as a class, with each share of Series D Preferred 
Stock having the number of votes equal to the number of shares of Common 
Stock into which such share of Series D Preferred Stock then is convertible; 
the directors so elected shall not be designated as to series or class of 
Capital Stock.  Upon the expiration of the terms of the Conversion Directors, 
their successors shall be classified  into three (3) classes as nearly equal 
in number as possible, with appropriate terms of office. 

    (c)  Immediately following a Type B Event Date, any Preferred Stock 
Director already serving as a member of the Board shall continue to serve in 
such position until the expiration of his term and the election and 
qualification of a successor, or until his earlier death, resignation or 
retirement.  Any vacancy, for any reason, in the position of a Series D 
Director prior to the second annual meeting of stockholders after a Type B 
Event Date, shall be filled by majority vote of the Series D Directors then 
serving.  Until the second annual meeting following a Type B Event Date, 
election of Series D Directors to succeed those whose terms expire prior to 
such second annual meeting shall be solely by holders of the Series D 
Preferred Stock, and shall follow the Series D Selection Procedure.  A Series 
D Director may be removed, with or without cause, by the holders of Series D 
Preferred Stock, in compliance with the requirements of Section 141(k)(2) of 
the Delaware General Corporation Law.  A Series D Director shall not be 
removed, with or without cause, otherwise than as described in this Section 
9(c). 

    (d)  Until the second annual meeting after the Type B Event Date, upon 
expiration of the term of the Joint Director, such position shall be subject 
to nomination, approval by the board of directors and election by the holders 
of Common Stock in the same fashion as provided in the Series B and C 
Certificates of Designation for the period before a Type B Event Date, except 
that

                                       7
<PAGE>

until the second annual meeting after the Type B Event Date, such nomination 
shall be by holders of a majority of the then outstanding shares of Series D 
Preferred Stock.  Until the second annual meeting after the Type B Event 
Date, any vacancy in the position of Joint Director shall be filled in the 
same fashion as provided in the Series B and C Certificates of Designation 
for the period before a Type B Event Date.

    (e)  Until the second annual meeting after the Type B Event Date, upon 
expiration of the term of any director who is neither a Series D Director nor 
the Joint Director, such position shall be subject to election by holders of 
shares of Common Stock only.

    (f)  Shares of Series D Preferred Stock shall be deemed to be shares 
"entitled to vote" or entitled to vote in the election of directors" for 
purposes of the provisions of the Certificate of Incorporation that employ 
such terms, and, for purposes of such provisions at any time, each 
outstanding share of Series D Preferred Stock shall count as such number of 
shares of Common Stock into which such share of Series D Preferred Stock is 
then convertible pursuant to Sections 5 and 6 hereof.

    (g)  If a Type B Event Date occurs prior to October 14, 1999, then the 
following provisions shall apply:

         (1)  From such Type B Event Date until the second subsequent annual
    stockholders meeting of the Company after such Type B Event Date, none of
    the following actions or transactions shall be effected by the Company or
    approved by the Company as a stockholder of any Subsidiary of the Company,
    and neither the Initial Purchaser nor any other holder of shares of
    Series D Preferred Stock (other than a holder pursuant to either a transfer
    permitted under Rule 144 under the Securities Act of 1933, as amended, or a
    transfer pursuant to a registered offer under registration rights from the
    Company) shall engage in, or be a party to, any of the following actions or
    transactions involving the Company or any Subsidiary of the Company, if, as
    of the record date for the determination of the stockholders entitled to
    vote thereon, or consent thereto, any other Person which obtained its
    equity interest in the Company as a result of a transfer of securities from
    the Initial Purchaser or any other Person referred to in clauses (A)
    through (D) of this sentence beneficially owns or controls, directly or
    indirectly, five percent (5%) or more of the outstanding shares of the
    Company entitled to vote:

              (A)  any merger or consolidation of the Company or any of its
         Subsidiaries with or into such other Person;

              (B)  any sale, lease, exchange or other disposition of all or any
         substantial part of the assets of the Company or any of its
         Subsidiaries to such other Person;

              (C)  the issuance or delivery of any voting securities of the
         Company or any of its Subsidiaries to such other Person in exchange
         for cash, other assets or securities, or a combination thereof; or

                                       8
<PAGE>

              (D)  any dissolution or liquidation of the Company;

    PROVIDED, HOWEVER, that such prohibition shall not apply with respect to
    any such action or transaction approved by (I) the affirmative vote of not
    less than eighty percent (80%) of the outstanding shares of the Company
    entitled to vote or (II) at least two-thirds (2/3) of the directors of the
    Company (which must include either (i) the Joint Director, if either (x)
    such Joint Director served in such position as of the Type B Event Date of
    (y) such Joint Director has been approved by a majority of the directors
    who were Common Stock Directors as of the Type B Event Date or (ii) at
    least one director who was a Common Stock Director prior to the Type B
    Event Date, unless neither the Joint Director, nor any of such Common Stock
    Directors continue to serve on the Board of Directors at such time).  For
    purposes of this Section 9(g) a Person shall be deemed to own or control,
    directly or indirectly, any outstanding shares of stock of the Company (A)
    which it has the right to acquire pursuant to any agreement, or upon the
    exercise of conversion rights, warrants or options, or otherwise, or (B)
    which are beneficially owned, directly or indirectly (including shares
    deemed owned through application of clause (A) above), by any other
    corporation, person or other entity (x) with which it or its "affiliate" or
    "associate" (as defined below) has any agreement, arrangement, or
    understanding for the purpose of acquiring, holding, voting or disposing of
    stock of the Company or (y) which is its "affiliate" or "associate" as
    those terms are defined under the Securities Exchange Act of 1934, as
    amended, and the rules and regulations promulgated thereunder.

No transfer of Series D Preferred Stock may be made by a Person who obtained 
shares of Series D Preferred Stock upon conversion of Series B Preferred 
Stock or Series C Preferred Stock, unless prior thereto, the transferee in 
such transfer shall have entered into an agreement in form and substance 
reasonably satisfactory to the Company, agreeing to be bound by the terms of 
this Section 9(g).  Notwithstanding anything to the contrary contained in 
this Section 9(g), such Person shall not need any approval by any directors, 
the Board of Directors or any stockholders under this Section 9 in order to 
transfer, sell or assign any of its Series D Conversion Shares in any of the 
following transactions (i) a transfer to an Initial Purchaser Affiliate (as 
defined in the Series B Certificate of Designation) or an Affiliate of the 
Initial Purchaser (as defined in the Series C Certificate of Designation, in 
either case as of the Initial Issue Date, (provided that prior to any such 
transfer such Initial Purchaser Affiliate or such Affiliate of the Initial 
Purchaser shall have delivered to the Company its written agreement to be 
bound by the terms of this Section 9(g); (ii) a transfer permitted under Rule 
144 under the Securities Act of 1933, as amended; or (iii) a transfer 
pursuant to a registered offering under registration rights from the Company. 

SECTION 10.   PROTECTIVE PROVISIONS.

    Without limiting the provisions of any other Series of Preferred Stock, 
the Company shall not take, and shall cause its Subsidiaries not to take, any 
of the following actions without the affirmative vote of holders of at least 
sixty-seven percent (67%) of the shares of the Series D Preferred Stock then 
outstanding:

                                       9
<PAGE>

    (a)  create, authorize or issue any shares of Series D Preferred Stock or 
any class or series of Supervoting Securities or shares of any such class or 
series;

    (b)  reclassify any authorized stock of the Company into Series D 
Preferred Stock or any class or series of Supervoting Securities or shares of 
such class or series;

    (c)  increase or decrease the authorized number of shares of Series D 
Preferred Stock or any class or series of Supervoting Securities or shares of 
any such class or series.

    The rights provided to holders of shares of Series D Preferred Stock in 
this Section 10 shall be in addition to and not in lieu of the other rights 
and protections granted to the holders of the shares of Series D Preferred 
Stock hereunder.

    SECTION 11.    REISSUANCE OF SERIES D PREFERRED STOCK.

    Shares of Series D Preferred Stock that have been issued and reacquired 
or converted in any manner, including shares purchased, redeemed, exchanged, 
or converted into shares of Common Equity, shall (upon compliance with any 
applicable provisions of the laws of Delaware) have the status of authorized 
but unissued shares of preferred stock of the Company undesignated as to 
series and may be designated or redesignated and issued or reissued, as the 
case may be, as part of any series of preferred stock of the Company, 
provided that such shares may not in any event be reissued as Series D 
Preferred Stock.

    SECTION 12.    BUSINESS DAY.

         If any payment, redemption or exchange shall be required by the 
terms hereof to be made on a day that is not a Business Day, such payment, 
redemption or exchange shall be made on the immediately succeeding Business 
Day.

    SECTION 13.    DEFINITIONS.

    As used in this Certificate, the following terms shall have the following 
meanings (with terms defined in the singular having comparable meanings when 
used in the plural and vice versa), unless the context otherwise requires:

    "AFFILIATE" of any specified Person means any other Person directly or 
indirectly controlling or controlled by or under direct or indirect common 
control with such specified Person.  For purposes of this definition, 
"control" (including, with correlative meanings, the terms "controlling," 
"controlled by" and "under common control with"), as used with respect to any 
Person, shall mean the possession, directly or indirectly, of the power to 
direct or cause the direction of the management or policies of such Person, 
whether through the ownership of voting securities, by agreement or 
otherwise; provided that beneficial ownership of a majority or more of the 
voting securities of a Person shall be deemed to be control.

    "AMENDED BYLAWS" means the Amended and Restated Bylaws of the Company, as 
in effect from time to time.

                                       10
<PAGE>

    "BOARD" or "BOARD OF DIRECTORS" means the Board of Directors of the 
Company.

    "BUSINESS DAY" means any day other than a Legal Holiday.

    "CAPITAL STOCK" means (i) in the case of a corporation, corporate stock, 
(ii) in the case of an association or business entity, any and all shares, 
interests, participations, rights or other equivalents (however designated) 
of corporate stock, (iii) in the case of a partnership, partnership interests 
(whether general or limited) and (iv) any other interest or participation 
that confers on a Person the right to receive a share of the profits and 
losses of, or distributions of assets of, the issuing Person.

    "CERTIFICATE OF INCORPORATION" means the certificate of incorporation (as 
defined in Section 104 of the Delaware General Corporation Law) of the 
Company in effect on the date hereof, including, without limitation, the 
Series A, Series B, Series C and Series D Certificates of Designation.

    "CHANGE OF CONTROL" with respect to a Person shall be deemed to have 
occurred (i) at such time as any person (as defined in Section 13(d)(3) of 
the Securities and Exchange Act of 1934) at any time shall directly or 
indirectly acquire more than 40% in outstanding voting power of such Person, 
(ii) at such time as during any one year period, individuals who at the 
beginning of such period constitute such Person's board of directors or other 
governing body cease to constitute at least a majority of such board or 
governing body (provided, however, that a change in directors upon a Type B 
Event Date shall not be deemed to cause a Change in Control pursuant to this 
clause (ii)), (iii) upon consummation of a merger or consolidation of such 
Person into or with another Person in which the shareholders of the subject 
Person immediately prior to the consummation of such transaction shall own 
less than Fifty Percent (50%) of the voting securities of the surviving 
Person (or the parent corporation of the surviving Person where the surviving 
Person is wholly-owned by the parent corporation) immediately following the 
consummation of such transaction or (iv) the sale, transfer or lease of all 
or substantially all of the assets of such Person, in any of cases (i), (ii), 
(iii) or (iv) in a single transaction or series of related transactions; 
PROVIDED, that no Change of Control hereunder with respect to the Company 
shall be deemed to occur solely by reason of (x) the ownership by the 
Majority Holders of the Series B Preferred Stock, Series C Preferred Stock, 
Series D Preferred Stock or any Affiliate thereof of any Capital Stock of the 
Company or (y) the conversion of shares of Series D Preferred Stock into 
Common Stock. 

    "COMMON EQUITY" means all shares now or hereafter authorized of any class 
of common stock of the Company (including the Common Stock) and any other 
stock of the Company, however designated, authorized after the date hereof, 
which has the right (subject always to prior rights of any class or series of 
preferred stock) to participate in any distribution of the assets or earnings 
of the Company without limit as to per share amount.

    "COMMON STOCK" has the meaning set forth in Section 3(a). 

                                       11
<PAGE>

    "COMMON STOCK DIRECTOR" means, for any period prior to any Type B Event 
Date, any director other than the Joint Director or a director elected by the 
holders of the Series B Preferred Stock or the Series C Preferred Stock.

    "COMPANY" means InSight Health Services Corp., a Delaware corporation.

    "CONVERSION DATE" has the meaning set forth in Section 5(a).

    "CONVERSION MULTIPLE" has the meaning set forth in Section 7(a).

    "CONVERSION DIRECTORS" has the meaning set forth in Section 9(b).

    "CORPORATE CHANGE" has the meaning set forth in Section 7(c).

    "FISCAL YEAR" means each year ending June 30, or any other fiscal year as 
approved by the Board of Directors.

    "INITIAL ISSUE DATE" means October 14, 1997.

    "INITIAL PURCHASER" means the Initial Purchasers of the Series B 
Preferred Stock and the Series C Preferred Stock (as defined in the 
respective Certificates of Designation).

    "JOINT DIRECTOR" has the meaning set forth in the Series B Certificate of 
Designation and the Series C Certificate of Designation.

    "JUNIOR SECURITIES" has the meaning set forth in Section 2.

    "LEGAL HOLIDAY" means a Saturday, a Sunday or a day on which banking 
institutions in the Company's principal place of business, the City of New 
York or at a place of payment are authorized by law, regulation or executive 
order to remain closed.  If a payment date is a Legal Holiday at a place of 
payment, payment may be made at that place on the next succeeding day that is 
not a Legal Holiday, and no interest shall accrue for the intervening period.

    "LIQUIDATING DIVIDEND" has the meaning set forth in Section 7(e).

    "LIQUIDATING EVENT" has the meaning set forth in Section 4(b).

    "LIQUIDATION PREFERENCE" has the meaning set forth in Section 4(a).

    "MAJORITY HOLDERS," at any time, and with respect to any class or series 
of Capital Stock of the Company, means holders of a majority of the shares of 
such class or series then outstanding.  If the term is used without reference 
to a particular class or series of Capital Stock of the Company, it means 
Majority Holders of the Series D Preferred Stock.

    "PARITY SECURITIES" has the meaning set forth in Section 2.

                                       12
<PAGE>

    "PERSON" means any individual, corporation, partnership, joint venture, 
association, limited liability company, joint-stock company, trust, 
unincorporated organization or government or agency or political subdivision 
thereof (including any subdivision or ongoing business of any such entity or 
substantially all of the assets of any such entity, subdivision or business).

    "PREFERRED STOCK DIRECTORS" means the Series B Directors and the Series C 
Director.

    "SENIOR SECURITIES" has the meaning set forth in Section 2. 

    "SERIES A CERTIFICATE OF DESIGNATION" means the Certificate of 
Designation, Preferences and Rights of the Series A Preferred Stock.

    "SERIES A PREFERRED STOCK" has the meaning set forth in Section 2.

    "SERIES B CERTIFICATE OF DESIGNATION" means the Certificate of 
Designation, Preferences and Rights of the Series B Preferred Stock.

    "SERIES B DIRECTOR" has the meaning set forth in the Series B Certificate 
of Designation.

    "SERIES B PREFERRED STOCK" has the meaning set forth in Section 1. 

    "SERIES C CERTIFICATE OF DESIGNATION" means the Certificate of 
Designation, Preferences and Rights of the Series C Preferred Stock.

    "SERIES C DIRECTOR" has the meaning set forth in the Series C Certificate 
of Designation.

    "SERIES C PREFERRED STOCK" has the meaning set forth in Section 2.

    "SERIES D CERTIFICATE OF DESIGNATION" means this document.

    "SERIES D DIRECTOR" has the meaning set forth in Section 9(b).

    "SERIES D PREFERRED STOCK" has the meaning set forth in Section 1.

    "SERIES D SELECTION PROCEDURE" shall mean selection of the Series D 
Directors by the holders of the shares of Series D Preferred Stock, which 
election shall employ cumulative voting of the shares of Series D Preferred 
Stock.

    "SUBSIDIARY" means, with respect to any Person, (a) any corporation of 
which at least a majority in interest of the outstanding voting stock (having 
by the terms thereof voting power under ordinary circumstances to elect a 
majority of the directors of such corporation, irrespective of whether or not 
at the time stock of any other class or classes of such corporation shall 
have or might have voting power by reason of the happening of any 
contingency) is at the time, directly or indirectly, owned or controlled by 
such Person, by one or more Subsidiaries of such Person or by such Person and 
one or more of its Subsidiaries, or (b) any corporate or non-corporate entity 
in which such Person, one or more Subsidiaries of such Person, or such person 
and one or more Subsidiaries of such Person, directly or indirectly, at the 
date of determination thereof, has an

                                       13
<PAGE>

ownership interest and one hundred percent (100%) of the revenue of which is 
included in the consolidated financial reports of such Person consistent with 
GAAP.

    "SUPERMAJORITY VOTE" means the affirmative vote of six (6) directors of 
the Company with respect to the matter subject to such vote.

    "SUPERVOTING SECURITIES" means any class or series of the Company's 
Capital Stock the holders of which have the right to cast more than one vote 
per share and/or have the right to elect one or more members of the Board of 
Directors, voting as a class or series.

    "TYPE B EVENT DATE" has the meaning set forth in Section 6 of the Series 
C Certificate of Designation and the Series B Certificate of Designation.

    "TYPE B PERCENTAGE" means a percentage equal to (i) the number of shares 
of Common Stock held by all holders of Series B Preferred Stock and Series C 
Preferred Stock as of a Type B Event Date (assuming full conversion of all 
such shares of Series B Preferred Stock and Series C Preferred Stock into 
Common Stock) divided by (ii) the total number of shares of Common Stock 
outstanding as of a Type B Event Date (assuming full conversion of all 
convertible shares of Preferred Stock as of such Type B Event Date); 
PROVIDED, HOWEVER, that the maximum Type B Percentage shall be sixty-four 
percent (64%).



                                       14
<PAGE>

    IN WITNESS WHEREOF, InSight Health Services Corp. has caused this 
Certificate to be executed by its Executive Vice President and Secretary this 
14th day of October, 1997.


                                       INSIGHT HEALTH SERVICES CORP.


                                       By:  /s/ Thomas V. Croal
                                            ----------------------------------
                                       Name:  Thomas V. Croal
                                       Office:  Executive Vice President
                                                    and Secretary





                                       15

<PAGE>

                                      EXHIBIT 8

                                   VOTING AGREEMENT
                                       (CP II)

    THIS VOTING AGREEMENT (the "Agreement") is made as of October 14, 1997 (the
"Effective Date"), by and among Carlyle Partners II, L.P., a Delaware limited
partnership ("CP II"), Carlyle Partners III, L.P., a Delaware limited
partnership ("CP III"), Carlyle International Partners II, L.P., a Cayman
Islands exempted limited partnership ("CIP II"), Carlyle International Partners
III, L.P., a Cayman Islands exempted limited partnership ("CIP III"), C/S
International Partners, a Cayman Islands general partnership ("C/S"), the State
Board of Administration of Florida ("SBA"), Carlyle Investment Group, L.P., a
Delaware limited partnership("CIG"), Carlyle-Insight International Partners,
L.P., a Cayman Islands exempted limited partnership ("C-IIP"), and
Carlyle-Insight Partners, L.P., a Delaware limited partnership ("C-IP") (CP II,
CP III, CIP II, CIP III, C/S, SBA, CIG, C-IIP and C-IP, collectively, the
"Stockholders" and, individually, a "Stockholder").

                                W I T N E S S E T H :

    WHEREAS, InSight Health Services Corp. (the "Company") and the Stockholders
have entered into that certain Securities Purchase Agreement dated as of October
14, 1997 (the "Purchase Agreement"), pursuant to which, among other things, the
Stockholders have the power, together with General Electric Company, a New York
corporation ("GE"), to nominate the Joint Director; 

    WHEREAS, pursuant to the Purchase Agreement and subject to the limitations
therein contained, the affirmative vote of holders of at least 67% of the then
outstanding shares of Series B Preferred Stock is required in order for the
Company to be able to undertake the actions specified in Sections 6.12(a) -
6.12(v), inclusive, of the Purchase Agreement; and

    WHEREAS, the Stockholders desire to enter into an agreement to be
specifically enforceable against each of them pursuant to which they agree to
vote their shares of the Series B Preferred Stock in the manner and for the
purposes specified herein, in order to allocate among themselves the power, with
GE, to nominate the Joint Director and the power to approve such actions as are
specified in such Sections 6.12(a) - 6.12(v).

    NOW, THEREFORE, in consideration of the premises and the mutual agreements
herein set forth, and for other good and lawful consideration, the receipt,
sufficiency and adequacy of which are hereby acknowledged, the parties hereto
agree as follows:

    SECTION 1.     ELECTION OF JOINT DIRECTOR; VOTING .

    (a)  Each of the Stockholders agrees to execute and deliver each written
notice prepared by CP II to be sent to the Secretary of the Company that
includes the identity of the person, determined by CP II and holders of a
majority of the then outstanding shares of Series C


<PAGE>


Preferred Stock, to be nominated to be the Joint Director, pursuant to Sections
10(b)(2) - 10(b)(4), inclusive, of the Series B Certificate of Designation and
the Series C Certificate of Designation.

    (b)  Each of the Stockholders agrees to cast its votes on all matters
specified in Sections 6.12(a) - 6.12(v), inclusive, of the Purchase Agreement,
in accordance with the votes on such matters cast by CP II.

    SECTION 2.     IRREVOCABLE PROXY.  In order to insure the voting of the
Stockholders in accordance with this Agreement, each Stockholder agrees to
execute an irrevocable proxy simultaneously with the execution hereof in the
form of Exhibit A attached hereto granting to CP II the right to vote, or to
execute and deliver stockholder written consents, in respect to all Stock now
owned or hereafter registered in the name of the Stockholder.  It is understood
and agreed that such irrevocable proxy relates solely to  the power, with GE, to
nominate the Joint Director and the power to approve such actions as are
specified in Sections 6.12(a) - 6.12(v), inclusive, of the Purchase Agreement in
accordance with this Agreement and does not constitute the grant of any rights
to said proxy to vote as to any other matters.

    SECTION 3.     CHANGES IN STOCK.  In the event that subsequent to the date
of this Agreement any shares or other securities (other than any shares or
securities of another corporation issued to the Company's stockholders pursuant
to a plan of merger) are issued on, or in exchange for, any of the shares of the
Stock held by the Stockholders by reason of any stock dividend, stock split,
consolidation of shares, reclassification, or consolidation involving the
Company such shares or securities shall be deemed to be Stock for purposes of
this Agreement.

    SECTION 4.     REPRESENTATIONS OF STOCKHOLDERS.  Each Stockholder hereby
represents and warrants to each of the other Stockholders that (a) it owns and
has the right to vote the number of shares of the Stock set forth opposite its
name on Exhibit B attached hereto, (b) it has full power to enter into this
Agreement and has not, prior to the date of this Agreement, executed or
delivered any proxy or entered into any other voting agreement or similar
arrangement other than one which has expired or terminated prior to the date
hereof and (c) it will not take any action inconsistent with the purposes and
provisions of this Agreement.

    SECTION 5.     ENFORCEABILITY.  Each Stockholder expressly agrees that this
Agreement shall be specifically enforceable in any court of competent
jurisdiction in accordance with its terms against each of the parties hereto,
provided, however, that this agreement shall be null and void unless persons
having the right, in the aggregate, to vote a majority of the issued and
outstanding shares of the Stock sign and become parties hereto prior to
October 30, 1997.

    SECTION 6.     GENERAL PROVISIONS.  (a) All of the covenants and agreements
contained in this Agreement shall be binding upon, and inure to the benefit of,
the respective parties and their successors, assigns, heirs, executors,
administrators and other legal representatives, as the case may be.

    (b)  This Agreement, and the rights of the parties hereto, shall be
governed by and construed in accordance with the laws of the State of Delaware.


                                          2
<PAGE>

    (c)  This Agreement shall be executed in any number of counterparts, each
of which will be deemed an original but all of which together shall constitute
one and the same instrument.

    (d)  This Agreement shall remain in effect until the day immediately
preceding the 2020 annual stockholders meeting, unless sooner terminated in
writing by each of the Stockholders.  This Agreement shall not be effective,
with respect to Section 1(b) hereof and with respect to Section 2 to the extent
it applies to matters to which Section 1(b) applies, at any time at which the
aggregate liquidation preference with respect to the Series B Preferred Stock
owned by the Stockholders, the general partner of any Stockholder or any
investor in any Stockholder or in the general partner of any Stockholder as of
October 14, 1997, taken as a whole, falls below 33% of the total liquidation
preference of the shares of Series B Preferred Stock outstanding on October 14,
1997. 

    (e)  If any provision of this Agreement shall be declared void or
unenforceable by any court or administrative board of competent jurisdiction,
such provision shall be deemed to have been severed from the remainder of this
Agreement and this Agreement shall continue in all respects to be valid and
enforceable.

    (f)  No waivers of any breach of this Agreement extended by any party
hereto to any other party shall be construed as a waiver of any rights or
remedies of any other party hereto or with respect to any continuing or
subsequent breach.  This Agreement may not be amended or modified except by a
written instrument signed by each of the Stockholders. 

    (g)  Capitalized terms used but not defined herein have the meaning given
to such terms in the Purchase Agreement.  Whenever the context of this Agreement
shall so require, the use of the singular number shall include the plural and
the use of any gender shall include all genders.  The term "Stock" means capital
stock of the Company.

    (h)  This Agreement and those documents expressly referred to herein
constitute the entire agreement and understanding of the parties and supersede
all other prior agreements and undertakings, both written and oral, among the
parties, or any of them, with respect to the subject matter hereof and thereof.


                                          3
<PAGE>

    IN WITNESS WHEREOF, the parties hereto have caused this Voting Agreement to
be duly executed and delivered, as of the day and year first above written.

                             CARLYLE PARTNERS II, L.P.,
                             a Delaware limited partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:
                                     -----------------------------------------
                                  Name:
                                       ---------------------------------------
                                  Title:
                                        --------------------------------------


                             CARLYLE PARTNERS III, L.P.,
                             a Delaware limited partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:
                                     -----------------------------------------
                                  Name:
                                       ---------------------------------------
                                  Title:
                                        --------------------------------------


                             CARLYLE INTERNATIONAL PARTNERS II, L.P.,
                             a Cayman Islands exempted limited partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:
                                     -----------------------------------------
                                  Name:
                                       ---------------------------------------
                                  Title:
                                        --------------------------------------
    
    
                             CARLYLE INTERNATIONAL PARTNERS III, L.P.,
                             a Cayman Islands exempted limited partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:
                                     -----------------------------------------
                                  Name:
                                       ---------------------------------------
                                  Title:
                                        --------------------------------------


                                          4
<PAGE>

                             C/S INTERNATIONAL PARTNERS,
                             a Cayman Islands general partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:
                                     -----------------------------------------
                                  Name:
                                       ---------------------------------------
                                  Title:
                                        --------------------------------------
    
    
                             STATE BOARD OF ADMINISTRATION OF
                             FLORIDA, 
                             a separate account maintained pursuant to an
                             Investment Management Agreement dated as of
                             September 6, 1996 between the State Board of
                             Administration of Florida, Carlyle Investment
                             Group, L.P. and Carlyle Investment Management,
                             L.L.C.

                             By:  Carlyle Investment Management, L.L.C., as
                             Investment Manager

                                  By:
                                     -----------------------------------------
                                  Name:
                                       ---------------------------------------
                                  Title:
                                        --------------------------------------
    
    
                             CARLYLE INVESTMENT GROUP, L.P.,
                             a Delaware limited partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:
                                     -----------------------------------------
                                  Name:
                                       ---------------------------------------
                                  Title:
                                        --------------------------------------


                                          5
<PAGE>

                             CARLYLE-INSIGHT INTERNATIONAL
                             PARTNERS, L.P., 
                             a Cayman Islands exempted limited partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:
                                     -----------------------------------------
                                  Name:
                                       ---------------------------------------
                                  Title:         
                                        --------------------------------------


                             CARLYLE-INSIGHT PARTNERS, L.P.,
                             a Delaware limited partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:
                                     -----------------------------------------
                                  Name:
                                       ---------------------------------------
                                  Title:
                                        --------------------------------------



                                          6
<PAGE>

                                      EXHIBIT A

                            INSIGHT HEALTH SERVICES CORP.
                                  IRREVOCABLE PROXY


    The undersigned agrees to, and hereby grants to CARLYLE PARTNERS II, L.P.,
a Delaware limited partnership, an irrevocable proxy pursuant to the provisions
of Section 212 of the Delaware General Corporation Law to vote, or to execute
and deliver written consents or otherwise act with respect to, all shares of
capital stock (the "Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now
owned or hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any applicable
laws or regulations governing the rights and powers of shareholders of a
Delaware corporation in connection with the nomination of the Joint Director and
in connection with the matters identified in Sections 6.12(a) - 6.12(v),
inclusive, of a certain Securities Purchase Agreement, dated as of October 14,
1997 among the Company and certain purchasers, as provided in a certain Voting
Agreement, dated as of October 14, 1997, among the purchasers under such
Securities Purchase Agreement.  The undersigned hereby affirms that this proxy
is given as a condition of said voting agreement and as such is coupled with an
interest and is irrevocable.  It is further understood by the undersigned that
this proxy may be exercised by CARLYLE PARTNERS II, L.P for the period beginning
the date hereof and ending on the day immediately preceding the Company's 2020
annual stockholders' meeting, unless sooner terminated in accordance with the
provisions of said voting agreement.

    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE ENFORCEABLE AGAINST
ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.




                                  By:
                                     -----------------------------------------
                                  Name:
                                       ---------------------------------------
                                  Title:
                                        --------------------------------------

<PAGE>

                                 EXHIBIT B


Carlyle Partners II, L.P.                            8,207.727
    
Carlyle Partners III, L.P.                             374.632

Carlyle International Partners II, L.P.              6,928.169

Carlyle International Partners IIII, L.P.              373.289

C/S International Partners                           1,559.913

State Board of Administration of Florida             3,447.641

Carlyle Investment Group, L.P.                           8.621

Carlyle-Insight International Partners, L.P.           918.659

Carlyle-Insight Partners, L.P.                       3,181.349

<PAGE>

                            INSIGHT HEALTH SERVICES CORP.
                                  IRREVOCABLE PROXY


    The undersigned agrees to, and hereby grants to CARLYLE PARTNERS II, L.P.,
a Delaware limited partnership, an irrevocable proxy pursuant to the provisions
of Section 212 of the Delaware General Corporation Law to vote, or to execute
and deliver written consents or otherwise act with respect to, all shares of
capital stock (the "Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now
owned or hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any applicable
laws or regulations governing the rights and powers of shareholders of a
Delaware corporation in connection with the nomination of the Joint Director and
in connection with the matters identified in Sections 6.12(a) - 6.12(v),
inclusive, of a certain Securities Purchase Agreement, dated as of October 14,
1997 among the Company and certain purchasers, as provided in a certain Voting
Agreement, dated as of October 14, 1997, among the purchasers under such
Securities Purchase Agreement.  The undersigned hereby affirms that this proxy
is given as a condition of said voting agreement and as such is coupled with an
interest and is irrevocable.  It is further understood by the undersigned that
this proxy may be exercised by CARLYLE PARTNERS II, L.P for the period beginning
the date hereof and ending on the day immediately preceding the Company's 2020
annual stockholders' meeting, unless sooner terminated in accordance with the
provisions of said voting agreement.

    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE ENFORCEABLE AGAINST
ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.


                                  CARLYLE INTERNATIONAL PARTNERS II, L.P.,
                                  a Cayman Islands exempted limited partnership

                                  By:  TC Group, L.L.C., its General Partner


                                       By:
                                          ------------------------------------
                                       Name:
                                            ----------------------------------
                                       Title:
                                             ---------------------------------


<PAGE>

                            INSIGHT HEALTH SERVICES CORP.
                                  IRREVOCABLE PROXY

    The undersigned agrees to, and hereby grants to CARLYLE PARTNERS II, L.P.,
a Delaware limited partnership, an irrevocable proxy pursuant to the provisions
of Section 212 of the Delaware General Corporation Law to vote, or to execute
and deliver written consents or otherwise act with respect to, all shares of
capital stock (the "Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now
owned or hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any applicable
laws or regulations governing the rights and powers of shareholders of a
Delaware corporation in connection with the nomination of the Joint Director and
in connection with the matters identified in Sections 6.12(a) - 6.12(v),
inclusive, of a certain Securities Purchase Agreement, dated as of October 14,
1997 among the Company and certain purchasers, as provided in a certain Voting
Agreement, dated as of October 14, 1997, among the purchasers under such
Securities Purchase Agreement.  The undersigned hereby affirms that this proxy
is given as a condition of said voting agreement and as such is coupled with an
interest and is irrevocable.  It is further understood by the undersigned that
this proxy may be exercised by CARLYLE PARTNERS II, L.P for the period beginning
the date hereof and ending on the day immediately preceding the Company's 2020
annual stockholders' meeting, unless sooner terminated in accordance with the
provisions of said voting agreement.

    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE ENFORCEABLE AGAINST
ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.


                             CARLYLE INTERNATIONAL PARTNERS III, L.P.,
                             a Cayman Islands exempted limited partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:
                                     -----------------------------------------
                                  Name:
                                       ---------------------------------------
                                  Title:
                                        --------------------------------------


<PAGE>

                            INSIGHT HEALTH SERVICES CORP.
                                  IRREVOCABLE PROXY

    The undersigned agrees to, and hereby grants to CARLYLE PARTNERS II, L.P.,
a Delaware limited partnership, an irrevocable proxy pursuant to the provisions
of Section 212 of the Delaware General Corporation Law to vote, or to execute
and deliver written consents or otherwise act with respect to, all shares of
capital stock (the "Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now
owned or hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any applicable
laws or regulations governing the rights and powers of shareholders of a
Delaware corporation in connection with the nomination of the Joint Director and
in connection with the matters identified in Sections 6.12(a) - 6.12(v),
inclusive, of a certain Securities Purchase Agreement, dated as of October 14,
1997 among the Company and certain purchasers, as provided in a certain Voting
Agreement, dated as of October 14, 1997, among the purchasers under such
Securities Purchase Agreement.  The undersigned hereby affirms that this proxy
is given as a condition of said voting agreement and as such is coupled with an
interest and is irrevocable.  It is further understood by the undersigned that
this proxy may be exercised by CARLYLE PARTNERS II, L.P for the period beginning
the date hereof and ending on the day immediately preceding the Company's 2020
annual stockholders' meeting, unless sooner terminated in accordance with the
provisions of said voting agreement.

    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE ENFORCEABLE AGAINST
ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.

                             C/S INTERNATIONAL PARTNERS,
                             a Cayman Islands general partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:
                                     -----------------------------------------
                                  Name:
                                       ---------------------------------------
                                  Title:
                                        --------------------------------------


<PAGE>

                            INSIGHT HEALTH SERVICES CORP.
                                  IRREVOCABLE PROXY

    The undersigned agrees to, and hereby grants to CARLYLE PARTNERS II, L.P.,
a Delaware limited partnership, an irrevocable proxy pursuant to the provisions
of Section 212 of the Delaware General Corporation Law to vote, or to execute
and deliver written consents or otherwise act with respect to, all shares of
capital stock (the "Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now
owned or hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any applicable
laws or regulations governing the rights and powers of shareholders of a
Delaware corporation in connection with the nomination of the Joint Director and
in connection with the matters identified in Sections 6.12(a) - 6.12(v),
inclusive, of a certain Securities Purchase Agreement, dated as of October 14,
1997 among the Company and certain purchasers, as provided in a certain Voting
Agreement, dated as of October 14, 1997, among the purchasers under such
Securities Purchase Agreement.  The undersigned hereby affirms that this proxy
is given as a condition of said voting agreement and as such is coupled with an
interest and is irrevocable.  It is further understood by the undersigned that
this proxy may be exercised by CARLYLE PARTNERS II, L.P for the period beginning
the date hereof and ending on the day immediately preceding the Company's 2020
annual stockholders' meeting, unless sooner terminated in accordance with the
provisions of said voting agreement.

    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE ENFORCEABLE AGAINST
ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.


                             STATE BOARD OF ADMINISTRATION OF
                             FLORIDA, 
                             a separate account maintained pursuant to an
                             Investment Management Agreement dated as of
                             September 6, 1996 between the State Board of
                             Administration of Florida, Carlyle Investment
                             Group, L.P. and Carlyle Investment Management,
                             L.L.C.

                             By:  Carlyle Investment Management, L.L.C., as
                                  Investment Manager

                                  By:
                                     -----------------------------------------
                                  Name:
                                       ---------------------------------------
                                  Title:
                                        --------------------------------------


<PAGE>

                            INSIGHT HEALTH SERVICES CORP.
                                  IRREVOCABLE PROXY

    The undersigned agrees to, and hereby grants to CARLYLE PARTNERS II, L.P.,
a Delaware limited partnership, an irrevocable proxy pursuant to the provisions
of Section 212 of the Delaware General Corporation Law to vote, or to execute
and deliver written consents or otherwise act with respect to, all shares of
capital stock (the "Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now
owned or hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any applicable
laws or regulations governing the rights and powers of shareholders of a
Delaware corporation in connection with the nomination of the Joint Director and
in connection with the matters identified in Sections 6.12(a) - 6.12(v),
inclusive, of a certain Securities Purchase Agreement, dated as of October 14,
1997 among the Company and certain purchasers, as provided in a certain Voting
Agreement, dated as of October 14, 1997, among the purchasers under such
Securities Purchase Agreement.  The undersigned hereby affirms that this proxy
is given as a condition of said voting agreement and as such is coupled with an
interest and is irrevocable.  It is further understood by the undersigned that
this proxy may be exercised by CARLYLE PARTNERS II, L.P for the period beginning
the date hereof and ending on the day immediately preceding the Company's 2020
annual stockholders' meeting, unless sooner terminated in accordance with the
provisions of said voting agreement.

    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE ENFORCEABLE AGAINST
ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.


                             CARLYLE INVESTMENT GROUP, L.P.,
                             a Delaware limited partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:
                                     -----------------------------------------
                                  Name:
                                       ---------------------------------------
                                  Title:
                                        --------------------------------------


<PAGE>

                            INSIGHT HEALTH SERVICES CORP.
                                  IRREVOCABLE PROXY

    The undersigned agrees to, and hereby grants to CARLYLE PARTNERS II, L.P.,
a Delaware limited partnership, an irrevocable proxy pursuant to the provisions
of Section 212 of the Delaware General Corporation Law to vote, or to execute
and deliver written consents or otherwise act with respect to, all shares of
capital stock (the "Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now
owned or hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any applicable
laws or regulations governing the rights and powers of shareholders of a
Delaware corporation in connection with the nomination of the Joint Director and
in connection with the matters identified in Sections 6.12(a) - 6.12(v),
inclusive, of a certain Securities Purchase Agreement, dated as of October 14,
1997 among the Company and certain purchasers, as provided in a certain Voting
Agreement, dated as of October 14, 1997, among the purchasers under such
Securities Purchase Agreement.  The undersigned hereby affirms that this proxy
is given as a condition of said voting agreement and as such is coupled with an
interest and is irrevocable.  It is further understood by the undersigned that
this proxy may be exercised by CARLYLE PARTNERS II, L.P for the period beginning
the date hereof and ending on the day immediately preceding the Company's 2020
annual stockholders' meeting, unless sooner terminated in accordance with the
provisions of said voting agreement.

    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE ENFORCEABLE AGAINST
ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.


    Dated this 14th day of October, 1997.


                             CARLYLE-INSIGHT INTERNATIONAL
                             PARTNERS, L.P., 
                             a Cayman Islands exempted limited partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:
                                     -----------------------------------------
                                  Name:
                                       ---------------------------------------
                                  Title:
                                        --------------------------------------


<PAGE>

                            INSIGHT HEALTH SERVICES CORP.
                                  IRREVOCABLE PROXY

    The undersigned agrees to, and hereby grants to CARLYLE PARTNERS II, L.P.,
a Delaware limited partnership, an irrevocable proxy pursuant to the provisions
of Section 212 of the Delaware General Corporation Law to vote, or to execute
and deliver written consents or otherwise act with respect to, all shares of
capital stock (the "Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now
owned or hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any applicable
laws or regulations governing the rights and powers of shareholders of a
Delaware corporation in connection with the nomination of the Joint Director and
in connection with the matters identified in Sections 6.12(a) - 6.12(v),
inclusive, of a certain Securities Purchase Agreement, dated as of October 14,
1997 among the Company and certain purchasers, as provided in a certain Voting
Agreement, dated as of October 14, 1997, among the purchasers under such
Securities Purchase Agreement.  The undersigned hereby affirms that this proxy
is given as a condition of said voting agreement and as such is coupled with an
interest and is irrevocable.  It is further understood by the undersigned that
this proxy may be exercised by CARLYLE PARTNERS II, L.P for the period beginning
the date hereof and ending on the day immediately preceding the Company's 2020
annual stockholders' meeting, unless sooner terminated in accordance with the
provisions of said voting agreement.

    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE ENFORCEABLE AGAINST
ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.



                             CARLYLE-INSIGHT PARTNERS, L.P.,
                             a Delaware limited partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:
                                     -----------------------------------------
                                  Name:
                                       ---------------------------------------
                                  Title:
                                        --------------------------------------



<PAGE>


                                      EXHIBIT 9

                                   VOTING AGREEMENT
                                       (CP III)


    THIS VOTING AGREEMENT (the "Agreement") is made as of October 14, 1997 (the
"Effective Date"), by and among Carlyle Partners II, L.P., a Delaware limited
partnership ("CP II"), Carlyle Partners III, L.P., a Delaware limited
partnership ("CP III"), Carlyle International Partners II, L.P., a Cayman
Islands exempted limited partnership ("CIP II"), Carlyle International Partners
III, L.P., a Cayman Islands exempted limited partnership ("CIP III"), C/S
International Partners, a Cayman Islands general partnership ("C/S"), the State
Board of Administration of Florida ("SBA"), Carlyle Investment Group, L.P., a
Delaware limited partnership("CIG"), Carlyle-Insight International Partners,
L.P., a Cayman Islands exempted limited partnership ("C-IIP"), and
Carlyle-Insight Partners, L.P., a Delaware limited partnership ("C-IP") (CP II,
CP III, CIP II, CIP III, C/S, SBA, CIG, C-IIP and C-IP, collectively, the
"Stockholders" and, individually, a "Stockholder").

                                W I T N E S S E T H :

    WHEREAS, InSight Health Services Corp. (the "Company") and the Stockholders
have entered into that certain Securities Purchase Agreement dated as of October
14, 1997 (the "Purchase Agreement"), pursuant to which, among other things, the
Stockholders have the power to elect two Preferred Stock Directors; 

    WHEREAS, the Stockholders desire to enter into an agreement to be
specifically enforceable against each of them pursuant to which they agree to
vote their shares of the Series B Preferred Stock in the manner and for the
purposes specified herein, in order to allocate among themselves the power to
determine who shall be elected as one of such Preferred Stock Directors.

    NOW, THEREFORE, in consideration of the premises and the mutual agreements
herein set forth, and for other good and lawful consideration, the receipt,
sufficiency and adequacy of which are hereby acknowledged, the parties hereto
agree as follows:

    SECTION 1.     ELECTION OF DIRECTOR.

    (a)   Each of the Stockholders agrees to vote all shares of Stock now
owned or hereafter acquired by it, at any regular or special meeting of
stockholders of the Company called for the purpose, for, or otherwise to consent
to, the election to the board of directors of the Company (the "Board") of the
person nominated in accordance with Sections 1(b) and 1(c) hereof (the
"Nominee"). 

    (b)   During the term of this Agreement, CP III shall be entitled to
designate one Nominee at any time that the term of office of a Nominee shall
expire and at any time that a vacancy shall exist for any reason in the
directorship to be filled by a Nominee. 


<PAGE>

    (c)   If any nominee shall be unable or unwilling to serve prior to his or
her election to the Board, CP III shall be entitled to nominate a replacement
who shall then be a Nominee for purposes of this Agreement.  If, following
election to the Board, any Nominee shall resign or be removed for cause or be
unable to serve by reason of death or disability, CP III shall, within thirty
days of such event, notify the Board in writing of a replacement, and the
Stockholders shall take such steps as may be necessary to elect such replacement
to the Board to fill the unexpired term of the Nominee.


    SECTION 2.    IRREVOCABLE PROXY.  In order to insure the voting of the
Stockholders in accordance with this Agreement, each Stockholder agrees to
execute an irrevocable proxy simultaneously with the execution hereof in the
form of Exhibit A attached hereto granting to CP III the right to vote, or to
execute and deliver stockholder written consents, in respect to all Stock now
owned or hereafter registered in the name of the Stockholder.  It is understood
and agreed that such irrevocable proxy relates solely to voting for the election
of one of the two Preferred Stock Directors to be elected by holders of the
Series B Preferred Stock in accordance with this Agreement and does not
constitute the grant of any rights to said proxy to vote as to any other
matters.

    SECTION 3.    CHANGES IN STOCK.  In the event that subsequent to the date
of this Agreement any shares or other securities (other than any shares or
securities of another corporation issued to the Company's stockholders pursuant
to a plan of merger) are issued on, or in exchange for, any of the shares of the
Stock held by the Stockholders by reason of any stock dividend, stock split,
consolidation of shares, reclassification, or consolidation involving the
Company such shares or securities shall be deemed to be Stock for purposes of
this Agreement.

    SECTION 4.    REPRESENTATIONS OF STOCKHOLDERS.  Each Stockholder hereby
represents and warrants to each of the other Stockholders that (a) it owns and
has the right to vote the number of shares of the Stock set forth opposite its
name on Exhibit B attached hereto, (b) it has full power to enter into this
Agreement and has not, prior to the date of this Agreement, executed or
delivered any proxy or entered into any other voting agreement or similar
arrangement other than one which has expired or terminated prior to the date
hereof and (c) it will not take any action inconsistent with the purposes and
provisions of this Agreement.

    SECTION 5.    ENFORCEABILITY.  Each Stockholder expressly agrees that this
Agreement shall be specifically enforceable in any court of competent
jurisdiction in accordance with its terms against each of the parties hereto,
provided, however, that this agreement shall be null and void unless persons
having the right, in the aggregate, to vote a majority of the issued and
outstanding shares of the Stock sign and become parties hereto prior to
October 30, 1997.

    SECTION 6.    GENERAL PROVISIONS.  (a) All of the covenants and agreements
contained in this Agreement shall be binding upon, and inure to the benefit of,
the respective parties and their successors, assigns, heirs, executors,
administrators and other legal representatives, as the case may be.

    (b)   This Agreement, and the rights of the parties hereto, shall be
governed by and construed in accordance with the laws of the State of Delaware.


                                          2
<PAGE>

    (c)   This Agreement shall be executed in any number of counterparts, each
of which will be deemed an original but all of which together shall constitute
one and the same instrument.

    (d)   This Agreement shall remain in effect until the day immediately
preceding the 2020 annual stockholders meeting, unless sooner terminated in
writing by each of the Stockholders.  This Agreement shall not be effective at
any time at which the aggregate liquidation preference with respect to the
Series B Preferred Stock owned by the Stockholders, the general partner of any
Stockholder or any investor in any Stockholder or in the general partner of any
Stockholder as of October 14, 1997, taken as a whole, falls below 25% of the
total liquidation preference of the shares of Series B Preferred Stock
outstanding on October 14, 1997. 

    (e)   If any provision of this Agreement shall be declared void or
unenforceable by any court or administrative board of competent jurisdiction,
such provision shall be deemed to have been severed from the remainder of this
Agreement and this Agreement shall continue in all respects to be valid and
enforceable.

    (f)   No waivers of any breach of this Agreement extended by any party
hereto to any other party shall be construed as a waiver of any rights or
remedies of any other party hereto or with respect to any continuing or
subsequent breach.  This Agreement may not be amended or modified except by a
written instrument signed by each of the Stockholders. 

    (g)   Capitalized terms used but not defined herein have the meaning given
to such terms in the Purchase Agreement.  Whenever the context of this Agreement
shall so require, the use of the singular number shall include the plural and
the use of any gender shall include all genders.  The term "Stock" means capital
stock of the Company.

    (h)   This Agreement and those documents expressly referred to herein
constitute the entire agreement and understanding of the parties and supersede
all other prior agreements and undertakings, both written and oral, among the
parties, or any of them, with respect to the subject matter hereof and thereof.


                                          3
<PAGE>

    IN WITNESS WHEREOF, the parties hereto have caused this Voting Agreement to
be duly executed and delivered, as of the day and year first above written.

                                  CARLYLE PARTNERS II, L.P.,
                                  a Delaware limited partnership

                                  By:  TC Group, L.L.C., its General Partner


                                       By:
                                          ---------------------------------
                                       Name:
                                            -------------------------------
                                       Title:
                                             ------------------------------


                                  CARLYLE PARTNERS II, L.P.,
                                  a Delaware limited partnership

                                  By:  TC Group, L.L.C., its General Partner


                                       By:
                                          ---------------------------------
                                       Name:
                                            -------------------------------
                                       Title:
                                             ------------------------------
                                  
                                  
                                  CARLYLE INTERNATIONAL PARTNERS II, L.P.,
                                  a Cayman Islands exempted limited partnership


                                  By:  TC Group, L.L.C., its General Partner


                                       By:
                                          ---------------------------------
                                       Name:
                                            -------------------------------
                                       Title:
                                             ------------------------------
                                  
                                  
                                  CARLYLE INTERNATIONAL PARTNERS II, L.P.,
                                  a Cayman Islands exempted limited partnership


                                  By:  TC Group, L.L.C., its General Partner


                                       By:
                                          ---------------------------------
                                       Name:
                                            -------------------------------
                                       Title:
                                             ------------------------------


                                          4
<PAGE>

                                  C/S INTERNATIONAL PARTNERS,
                                  a Cayman Islands general partnership

                                  By:  TC Group, L.L.C., its General Partner

                                       By:
                                          ---------------------------------
                                       Name:
                                            -------------------------------
                                       Title:
                                             ------------------------------
                                  
                                  
                                  
                                  STATE BOARD OF ADMINISTRATION OF FLORIDA, 
                                  a separate account maintained pursuant to an
                                  Investment Management Agreement dated as of 
                                  September 6, 1996 between the State Board of
                                  Administration of Florida, Carlyle Investment
                                  Group, L.P. and Carlyle Investment 
                                  Management, L.L.C.

                                  By:  Carlyle Investment Management, L.L.C.,
                                       as Investment Manager


                                       By:
                                          ---------------------------------
                                       Name:
                                            -------------------------------
                                       Title:
                                             ------------------------------
                                       
                                  CARLYLE INVESTMENT GROUP, L.P.,
                                  a Delaware limited partnership

                                  By:  TC Group, L.L.C., its General Partner


                                       By:
                                          ---------------------------------
                                       Name:
                                            -------------------------------
                                       Title:
                                             ------------------------------

                                  

                                          5
<PAGE>

                                  CARLYLE-INSIGHT INTERNATIONAL
                                  PARTNERS, L.P., 
                                  a Cayman Islands exempted limited partnership

                                  By:  TC Group, L.L.C., its General Partner


                                       By:
                                          ---------------------------------
                                       Name:
                                            -------------------------------
                                       Title:
                                             ------------------------------
                                  
                                  
                                  
                                  CARLYLE-INSIGHT PARTNERS, L.P.,
                                  a Delaware limited partnership

                                  By:  TC Group, L.L.C., its General Partner


                                       By:
                                          ---------------------------------
                                       Name:
                                            -------------------------------
                                       Title:
                                             ------------------------------


                                          6
<PAGE>

                                      EXHIBIT A

                            INSIGHT HEALTH SERVICES CORP.
                                  IRREVOCABLE PROXY


    The undersigned agrees to, and hereby grants to CARLYLE PARTNERS III, L.P.,
a Delaware limited partnership, an irrevocable proxy pursuant to the provisions
of Section 212 of the Delaware General Corporation Law to vote, or to execute
and deliver written consents or otherwise act with respect to, all shares of
capital stock (the "Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now
owned or hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any applicable
laws or regulations governing the rights and powers of shareholders of a
Delaware corporation in connection with the election of directors of the Company
as provided in a certain Voting Agreement, dated as of October 14, 1997, among
the purchasers under a certain Securities Purchase Agreement, dated as of
October 14, 1997 among the Company and such purchasers.  The undersigned hereby
affirms that this proxy is given as a condition of said voting agreement and as
such is coupled with an interest and is irrevocable.  It is further understood
by the undersigned that this proxy may be exercised by CARLYLE PARTNERS III, L.P
for the period beginning the date hereof and ending on the day immediately
preceding the Company's 2020 annual stockholders' meeting, unless sooner
terminated in accordance with the provisions of said voting agreement.


    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE ENFORCEABLE AGAINST
ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.

    
                                       By:
                                          ---------------------------------
                                       Name:
                                            -------------------------------
                                       Title:
                                             ------------------------------
<PAGE>

                                 EXHIBIT B


Carlyle Partners II, L.P.                            8,207.727
    
Carlyle Partners III, L.P.                             374.632

Carlyle International Partners II, L.P.              6,928.169

Carlyle International Partners IIII, L.P.              373.289

C/S International Partners                           1,559.913

State Board of Administration of Florida             3,447.641

Carlyle Investment Group, L.P.                           8.621

Carlyle-Insight International Partners, L.P.           918.659

Carlyle-Insight Partners, L.P.                       3,181.349

<PAGE>


                            INSIGHT HEALTH SERVICES CORP.
                                  IRREVOCABLE PROXY


    The undersigned agrees to, and hereby grants to CARLYLE PARTNERS III, L.P.,
a Delaware limited partnership, an irrevocable proxy pursuant to the provisions
of Section 212 of the Delaware General Corporation Law to vote, or to execute
and deliver written consents or otherwise act with respect to, all shares of
capital stock (the "Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now
owned or hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any applicable
laws or regulations governing the rights and powers of shareholders of a
Delaware corporation in connection with the election of directors of the Company
as provided in a certain Voting Agreement, dated as of October 14, 1997, among
the purchasers under a certain Securities Purchase Agreement, dated as of
October 14, 1997 among the Company and such purchasers.  The undersigned hereby
affirms that this proxy is given as a condition of said voting agreement and as
such is coupled with an interest and is irrevocable.  It is further understood
by the undersigned that this proxy may be exercised by CARLYLE PARTNERS III, L.P
for the period beginning the date hereof and ending on the day immediately
preceding the Company's 2020 annual stockholders' meeting, unless sooner
terminated in accordance with the provisions of said voting agreement.


    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE ENFORCEABLE AGAINST
ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.



    
                             CARLYLE PARTNERS II, L.P.,
                             a Delaware limited partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:
                                     --------------------------
                                  Name:     
                                     --------------------------
                                  Title:         
                                     --------------------------

<PAGE>


                            INSIGHT HEALTH SERVICES CORP.
                                  IRREVOCABLE PROXY


    The undersigned agrees to, and hereby grants to CARLYLE PARTNERS
III, L.P., a Delaware limited partnership, an irrevocable proxy
pursuant to the provisions of Section 212 of the Delaware General
Corporation Law to vote, or to execute and deliver written consents or
otherwise act with respect to, all shares of capital stock (the
"Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now owned or
hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any
applicable laws or regulations governing the rights and powers of
shareholders of a Delaware corporation in connection with the election
of directors of the Company as provided in a certain Voting Agreement,
dated as of October 14, 1997, among the purchasers under a certain
Securities Purchase Agreement, dated as of October 14, 1997 among the
Company and such purchasers.  The undersigned hereby affirms that this
proxy is given as a condition of said voting agreement and as such is
coupled with an interest and is irrevocable.  It is further understood
by the undersigned that this proxy may be exercised by CARLYLE
PARTNERS III, L.P for the period beginning the date hereof and ending
on the day immediately preceding the Company's 2020 annual
stockholders' meeting, unless sooner terminated in accordance with the
provisions of said voting agreement.


    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE
ENFORCEABLE AGAINST ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.




                        CARLYLE INTERNATIONAL PARTNERS II, L.P.,
                        a Cayman Islands exempted limited partnership

                        By:  TC Group, L.L.C., its General Partner


                             By:       
                                --------------------------
                             Name:     
                                --------------------------
                             Title:         
                                   --------------------------

<PAGE>


                         INSIGHT HEALTH SERVICES CORP.
                               IRREVOCABLE PROXY


    The undersigned agrees to, and hereby grants to CARLYLE PARTNERS
III, L.P., a Delaware limited partnership, an irrevocable proxy
pursuant to the provisions of Section 212 of the Delaware General
Corporation Law to vote, or to execute and deliver written consents or
otherwise act with respect to, all shares of capital stock (the
"Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now owned or
hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any
applicable laws or regulations governing the rights and powers of
shareholders of a Delaware corporation in connection with the election
of directors of the Company as provided in a certain Voting Agreement,
dated as of October 14, 1997, among the purchasers under a certain
Securities Purchase Agreement, dated as of October 14, 1997 among the
Company and such purchasers.  The undersigned hereby affirms that this
proxy is given as a condition of said voting agreement and as such is
coupled with an interest and is irrevocable.  It is further understood
by the undersigned that this proxy may be exercised by CARLYLE
PARTNERS III, L.P for the period beginning the date hereof and ending
on the day immediately preceding the Company's 2020 annual
stockholders' meeting, unless sooner terminated in accordance with the
provisions of said voting agreement.


    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE
ENFORCEABLE AGAINST ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.


    Dated this 14th day of October, 1997.

                        CARLYLE INTERNATIONAL PARTNERS III, L.P.,
                        a Cayman Islands exempted limited partnership

                        By:  TC Group, L.L.C., its General Partner


                             By:       
                                ----------------------------
                             Name:     
                                ----------------------------
                             Title:         
                                ----------------------------

<PAGE>


                         INSIGHT HEALTH SERVICES CORP.
                               IRREVOCABLE PROXY


    The undersigned agrees to, and hereby grants to CARLYLE PARTNERS
III, L.P., a Delaware limited partnership, an irrevocable proxy
pursuant to the provisions of Section 212 of the Delaware General
Corporation Law to vote, or to execute and deliver written consents or
otherwise act with respect to, all shares of capital stock (the
"Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now owned or
hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any
applicable laws or regulations governing the rights and powers of
shareholders of a Delaware corporation in connection with the election
of directors of the Company as provided in a certain Voting Agreement,
dated as of October 14, 1997, among the purchasers under a certain
Securities Purchase Agreement, dated as of October 14, 1997 among the
Company and such purchasers.  The undersigned hereby affirms that this
proxy is given as a condition of said voting agreement and as such is
coupled with an interest and is irrevocable.  It is further understood
by the undersigned that this proxy may be exercised by CARLYLE
PARTNERS III, L.P for the period beginning the date hereof and ending
on the day immediately preceding the Company's 2020 annual
stockholders' meeting, unless sooner terminated in accordance with the
provisions of said voting agreement.


    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE
ENFORCEABLE AGAINST ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.


                        C/S INTERNATIONAL PARTNERS,
                        a Cayman Islands general partnership

                        By:  TC Group, L.L.C., its General Partner


                             By:       
                                ------------------------------
                             Name:     
                                ------------------------------
                             Title:         
                                ------------------------------


<PAGE>

                         INSIGHT HEALTH SERVICES CORP.
                               IRREVOCABLE PROXY


    The undersigned agrees to, and hereby grants to CARLYLE PARTNERS
III, L.P., a Delaware limited partnership, an irrevocable proxy
pursuant to the provisions of Section 212 of the Delaware General
Corporation Law to vote, or to execute and deliver written consents or
otherwise act with respect to, all shares of capital stock (the
"Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now owned or
hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any
applicable laws or regulations governing the rights and powers of
shareholders of a Delaware corporation in connection with the election
of directors of the Company as provided in a certain Voting Agreement,
dated as of October 14, 1997, among the purchasers under a certain
Securities Purchase Agreement, dated as of October 14, 1997 among the
Company and such purchasers.  The undersigned hereby affirms that this
proxy is given as a condition of said voting agreement and as such is
coupled with an interest and is irrevocable.  It is further understood
by the undersigned that this proxy may be exercised by CARLYLE
PARTNERS III, L.P for the period beginning the date hereof and ending
on the day immediately preceding the Company's 2020 annual
stockholders' meeting, unless sooner terminated in accordance with the
provisions of said voting agreement.


    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE
ENFORCEABLE AGAINST ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.



                        STATE BOARD OF ADMINISTRATION OF
                        FLORIDA, 
                        a separate account maintained pursuant to an
                        Investment Management Agreement dated as of
                        September 6, 1996 between the State Board of
                        Administration of Florida, Carlyle Investment
                        Group, L.P. and Carlyle Investment
                        Management, L.L.C.

                        By:  Carlyle Investment Management, L.L.C.,
                             as Investment Manager

                             By:       
                                ---------------------------
                             Name:     
                                ---------------------------
                             Title:         
                                ---------------------------

<PAGE>


                       INSIGHT HEALTH SERVICES CORP.
                             IRREVOCABLE PROXY


    The undersigned agrees to, and hereby grants to CARLYLE PARTNERS
III, L.P., a Delaware limited partnership, an irrevocable proxy
pursuant to the provisions of Section 212 of the Delaware General
Corporation Law to vote, or to execute and deliver written consents or
otherwise act with respect to, all shares of capital stock (the
"Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now owned or
hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any
applicable laws or regulations governing the rights and powers of
shareholders of a Delaware corporation in connection with the election
of directors of the Company as provided in a certain Voting Agreement,
dated as of October 14, 1997, among the purchasers under a certain
Securities Purchase Agreement, dated as of October 14, 1997 among the
Company and such purchasers.  The undersigned hereby affirms that this
proxy is given as a condition of said voting agreement and as such is
coupled with an interest and is irrevocable.  It is further understood
by the undersigned that this proxy may be exercised by CARLYLE
PARTNERS III, L.P for the period beginning the date hereof and ending
on the day immediately preceding the Company's 2020 annual
stockholders' meeting, unless sooner terminated in accordance with the
provisions of said voting agreement.


    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE
ENFORCEABLE AGAINST ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.


                        CARLYLE INVESTMENT GROUP, L.P.,
                        a Delaware limited partnership

                        By:  TC Group, L.L.C., its General Partner


                             By:       
                                ---------------------------
                             Name:     
                                ---------------------------
                             Title:         
                                ---------------------------

<PAGE>


                       INSIGHT HEALTH SERVICES CORP.
                             IRREVOCABLE PROXY


    The undersigned agrees to, and hereby grants to CARLYLE PARTNERS
III, L.P., a Delaware limited partnership, an irrevocable proxy
pursuant to the provisions of Section 212 of the Delaware General
Corporation Law to vote, or to execute and deliver written consents or
otherwise act with respect to, all shares of capital stock (the
"Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now owned or
hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any
applicable laws or regulations governing the rights and powers of
shareholders of a Delaware corporation in connection with the election
of directors of the Company as provided in a certain Voting Agreement,
dated as of October 14, 1997, among the purchasers under a certain
Securities Purchase Agreement, dated as of October 14, 1997 among the
Company and such purchasers.  The undersigned hereby affirms that this
proxy is given as a condition of said voting agreement and as such is
coupled with an interest and is irrevocable.  It is further understood
by the undersigned that this proxy may be exercised by CARLYLE
PARTNERS III, L.P for the period beginning the date hereof and ending
on the day immediately preceding the Company's 2020 annual
stockholders' meeting, unless sooner terminated in accordance with the
provisions of said voting agreement.


    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE
ENFORCEABLE AGAINST ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.


                        CARLYLE-INSIGHT INTERNATIONAL
                        PARTNERS, L.P., 
                        a Cayman Islands exempted limited partnership

                        By:  TC Group, L.L.C., its General Partner


                             By:       
                                ---------------------------
                             Name:     
                                ---------------------------
                             Title:         
                                ---------------------------

<PAGE>


                       INSIGHT HEALTH SERVICES CORP.
                             IRREVOCABLE PROXY


    The undersigned agrees to, and hereby grants to CARLYLE PARTNERS
III, L.P., a Delaware limited partnership, an irrevocable proxy
pursuant to the provisions of Section 212 of the Delaware General
Corporation Law to vote, or to execute and deliver written consents or
otherwise act with respect to, all shares of capital stock (the
"Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now owned or
hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any
applicable laws or regulations governing the rights and powers of
shareholders of a Delaware corporation in connection with the election
of directors of the Company as provided in a certain Voting Agreement,
dated as of October 14, 1997, among the purchasers under a certain
Securities Purchase Agreement, dated as of October 14, 1997 among the
Company and such purchasers.  The undersigned hereby affirms that this
proxy is given as a condition of said voting agreement and as such is
coupled with an interest and is irrevocable.  It is further understood
by the undersigned that this proxy may be exercised by CARLYLE
PARTNERS III, L.P for the period beginning the date hereof and ending
on the day immediately preceding the Company's 2020 annual
stockholders' meeting, unless sooner terminated in accordance with the
provisions of said voting agreement.


    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE
ENFORCEABLE AGAINST ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.


                        CARLYLE-INSIGHT PARTNERS, L.P.,
                        a Delaware limited partnership

                        By:  TC Group, L.L.C., its General Partner


                             By:       
                                ---------------------------
                             Name:
                                ---------------------------
                             Title:                             
                                 ---------------------------



<PAGE>

                                      EXHIBIT 10

                                   VOTING AGREEMENT
                                        (C-IP)

    THIS VOTING AGREEMENT (the "Agreement") is made as of October 14, 1997 (the
"Effective Date"), by and among Carlyle Partners II, L.P., a Delaware limited
partnership ("CP II"), Carlyle Partners III, L.P., a Delaware limited
partnership ("CP III"), Carlyle International Partners II, L.P., a Cayman
Islands exempted limited partnership ("CIP II"), Carlyle International Partners
III, L.P., a Cayman Islands exempted limited partnership ("CIP III"), C/S
International Partners, a Cayman Islands general partnership ("C/S"), the State
Board of Administration of Florida ("SBA"), Carlyle Investment Group, L.P., a
Delaware limited partnership("CIG"), Carlyle-Insight International Partners,
L.P., a Cayman Islands exempted limited partnership ("C-IIP"), and
Carlyle-Insight Partners, L.P., a Delaware limited partnership ("C-IP") (CP II,
CP III, CIP II, CIP III, C/S, SBA, CIG, C-IIP and C-IP, collectively, the
"Stockholders" and, individually, a "Stockholder").

                                W I T N E S S E T H :

    WHEREAS, InSight Health Services Corp. (the "Company") and the Stockholders
have entered into that certain Securities Purchase Agreement dated as of October
14, 1997 (the "Purchase Agreement"), pursuant to which, among other things, the
Stockholders have the power to elect two Preferred Stock Directors; 

    WHEREAS, the Stockholders desire to enter into an agreement to be
specifically enforceable against each of them pursuant to which they agree to
vote their shares of the Series B Preferred Stock in the manner and for the
purposes specified herein, in order to allocate among themselves the power to
determine who shall be elected as one of such Preferred Stock Directors.

    NOW, THEREFORE, in consideration of the premises and the mutual agreements
herein set forth, and for other good and lawful consideration, the receipt,
sufficiency and adequacy of which are hereby acknowledged, the parties hereto
agree as follows:

    SECTION 1.     ELECTION OF DIRECTOR.

    (a)  Each of the Stockholders agrees to vote all shares of Stock now owned
or hereafter acquired by it, at any regular or special meeting of stockholders
of the Company called for the purpose, for, or otherwise to consent to, the
election to the board of directors of the Company (the "Board") of the person
nominated in accordance with Sections 1(b) and 1(c) hereof (the "Nominee"). 

    (b)  During the term of this Agreement, C-IP shall be entitled to designate
one Nominee at any time that the term of office of a Nominee shall expire and at
any time that a vacancy shall exist for any reason in the directorship to be
filled by a Nominee. 

<PAGE>

    (c)  If any nominee shall be unable or unwilling to serve prior to his or
her election to the Board, C-IP shall be entitled to nominate a replacement who
shall then be a Nominee for purposes of this Agreement.  If, following election
to the Board, any Nominee shall resign or be removed for cause or be unable to
serve by reason of death or disability, C-IP shall, within thirty days of such
event, notify the Board in writing of a replacement, and the Stockholders shall
take such steps as may be necessary to elect such replacement to the Board to
fill the unexpired term of the Nominee.

    SECTION 2.     IRREVOCABLE PROXY.  In order to insure the voting of the
Stockholders in accordance with this Agreement, each Stockholder agrees to
execute an irrevocable proxy simultaneously with the execution hereof in the
form of Exhibit A attached hereto granting to C-IP the right to vote, or to
execute and deliver stockholder written consents, in respect to all Stock now
owned or hereafter registered in the name of the Stockholder.  It is understood
and agreed that such irrevocable proxy relates solely to voting for the election
of one of the two Preferred Stock Directors to be elected by holders of the
Series B Preferred Stock in accordance with this Agreement and does not
constitute the grant of any rights to said proxy to vote as to any other
matters.

    SECTION 3.     CHANGES IN STOCK.  In the event that subsequent to the date
of this Agreement any shares or other securities (other than any shares or
securities of another corporation issued to the Company's stockholders pursuant
to a plan of merger) are issued on, or in exchange for, any of the shares of the
Stock held by the Stockholders by reason of any stock dividend, stock split,
consolidation of shares, reclassification, or consolidation involving the
Company such shares or securities shall be deemed to be Stock for purposes of
this Agreement.

    SECTION 4.     REPRESENTATIONS OF STOCKHOLDERS.  Each Stockholder hereby
represents and warrants to each of the other Stockholders that (a) it owns and
has the right to vote the number of shares of the Stock set forth opposite its
name on Exhibit B attached hereto, (b) it has full power to enter into this
Agreement and has not, prior to the date of this Agreement, executed or
delivered any proxy or entered into any other voting agreement or similar
arrangement other than one which has expired or terminated prior to the date
hereof and (c) it will not take any action inconsistent with the purposes and
provisions of this Agreement.

    SECTION 5.     ENFORCEABILITY.  Each Stockholder expressly agrees that this
Agreement shall be specifically enforceable in any court of competent
jurisdiction in accordance with its terms against each of the parties hereto,
provided, however, that this agreement shall be null and void unless persons
having the right, in the aggregate, to vote a majority of the issued and
outstanding shares of the Stock sign and become parties hereto prior to
October 30, 1997.

    SECTION 6.     GENERAL PROVISIONS.  (a) All of the covenants and agreements
contained in this Agreement shall be binding upon, and enure to the benefit of,
the respective parties and their successors, assigns, heirs, executors,
administrators and other legal representatives, as the case may be.

    (b)  This Agreement, and the rights of the parties hereto, shall be
governed by and construed in accordance with the laws of the State of Delaware.

                                          2
<PAGE>

    (c)  This Agreement shall be executed in any number of counterparts, each
of which will be deemed an original but all of which together shall constitute
one and the same instrument.

    (d)  This Agreement shall remain in effect until the day immediately
preceding the 2020 annual stockholders meeting, unless sooner terminated in
writing by each of the Stockholders.  This Agreement shall not be effective at
any time at which the aggregate liquidation preference with respect to the
Series B Preferred Stock owned by the Stockholders, the general partner of any
Stockholder or any investor in any Stockholder or in the general partner of any
Stockholder as of October 14, 1997, taken as a whole, falls below 50% of the
total liquidation preference of the shares of Series B Preferred Stock
outstanding on October 14, 1997. 

    (e)  If any provision of this Agreement shall be declared void or
unenforceable by any court or administrative board of competent jurisdiction,
such provision shall be deemed to have been severed from the remainder of this
Agreement and this Agreement shall continue in all respects to be valid and
enforceable.

    (f)  No waivers of any breach of this Agreement extended by any party
hereto to any other party shall be construed as a waiver of any rights or
remedies of any other party hereto or with respect to any continuing or
subsequent breach.  This Agreement may not be amended or modified except by a
written instrument signed by each of the Stockholders. 

    (g)  Capitalized terms used but not defined herein have the meaning given
to such terms in the Purchase Agreement.  Whenever the context of this Agreement
shall so require, the use of the singular number shall include the plural and
the use of any gender shall include all genders.  The term "Stock" means capital
stock of the Company.

    (h)  This Agreement and those documents expressly referred to herein
constitute the entire agreement and understanding of the parties and supersede
all other prior agreements and undertakings, both written and oral, among the
parties, or any of them, with respect to the subject matter hereof and thereof.

                                          3
<PAGE>

    IN WITNESS WHEREOF, the parties hereto have caused this Voting Agreement to
be duly executed and delivered, as of the day and year first above written.
    
                             CARLYLE PARTNERS II, L.P.,
                             a Delaware limited partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:
                                     --------------------------
                                  Name:     
                                     --------------------------
                                  Title:         
                                     --------------------------


                             CARLYLE PARTNERS III, L.P.,
                             a Delaware limited partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:       
                                     --------------------------
                                  Name:     
                                     --------------------------
                                  Title:         
                                     --------------------------


                             CARLYLE INTERNATIONAL PARTNERS II, L.P.,
                             a Cayman Islands exempted limited partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:       
                                     --------------------------
                                  Name:     
                                     --------------------------
                                  Title:         
                                     --------------------------

    
                             CARLYLE INTERNATIONAL PARTNERS III, L.P.,
                             a Cayman Islands exempted limited partnership
    
                             By:  TC Group, L.L.C., its General Partner


                                  By:       
                                     --------------------------
                                  Name:     
                                     --------------------------
                                  Title:         
                                     --------------------------

                                          4

<PAGE>


                             C/S INTERNATIONAL PARTNERS,
                             a Cayman Islands general partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:       
                                     --------------------------
                                  Name:     
                                     --------------------------
                                  Title:         
                                     --------------------------

    
                             STATE BOARD OF ADMINISTRATION OF
                             FLORIDA, 
                             a separate account maintained pursuant to an
                             Investment Management Agreement dated as of
                             September 6, 1996 between the State Board of
                             Administration of Florida, Carlyle Investment
                             Group, L.P. and Carlyle Investment Management,
                             L.L.C.

                             By:  Carlyle Investment Management, L.L.C.,
                             as Investment Manager

                                  By:       
                                     --------------------------
                                  Name:     
                                     --------------------------
                                  Title:         
                                     --------------------------
    
    
                             CARLYLE INVESTMENT GROUP, L.P.,
                             a Delaware limited partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:       
                                     --------------------------
                                  Name:     
                                     --------------------------
                                  Title:         
                                     --------------------------

                                          5
<PAGE>


                             CARLYLE-INSIGHT INTERNATIONAL
                             PARTNERS, L.P., 
                             a Cayman Islands exempted limited partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:       
                                     --------------------------
                                  Name:     
                                     --------------------------
                                  Title:         
                                     --------------------------
    
    
                             CARLYLE-INSIGHT PARTNERS, L.P.,
                             a Delaware limited partnership

                             By:  TC Group, L.L.C., its General Partner


                                  By:       
                                     --------------------------
                                  Name:     
                                     --------------------------
                                  Title:         
                                     --------------------------

                                          6
<PAGE>


                                      EXHIBIT A

                            INSIGHT HEALTH SERVICES CORP.
                                  IRREVOCABLE PROXY


    The undersigned agrees to, and hereby grants to CARLYLE-INSIGHT PARTNERS,
L.P., a Delaware limited partnership, an irrevocable proxy pursuant to the
provisions of Section 212 of the Delaware General Corporation Law to vote, or to
execute and deliver written consents or otherwise act with respect to, all
shares of capital stock (the "Stock") of INSIGHT HEALTH SERVICES CORP. (the
"Company") now owned or hereafter acquired by the undersigned as fully, to the
same extent and with the same effect as the undersigned might or could do under
any applicable laws or regulations governing the rights and powers of
shareholders of a Delaware corporation in connection with the election of
directors of the Company as provided in a certain Voting Agreement, dated as of
October 14, 1997 among the purchasers under a certain Securities Purchase
Agreement, dated as of October 14, 1997 among the Company and such purchasers. 
The undersigned hereby affirms that this proxy is given as a condition of said
voting agreement and as such is coupled with an interest and is irrevocable.  It
is further understood by the undersigned that this proxy may be exercised by
CARLYLE-INSIGHT PARTNERS, L.P for the period beginning the date hereof and
ending on the day immediately preceding the Company's 2020 annual stockholders'
meeting, unless sooner terminated in accordance with the provisions of said
voting agreement.

    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE ENFORCEABLE AGAINST
ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.


    
    


                             By:       
                                --------------------------
                             Name:     
                                --------------------------
                             Title:         
                                  --------------------------


<PAGE>

                                 EXHIBIT B


Carlyle Partners II, L.P.                            8,207.727
    
Carlyle Partners III, L.P.                             374.632

Carlyle International Partners II, L.P.              6,928.169

Carlyle International Partners IIII, L.P.              373.289

C/S International Partners                           1,559.913

State Board of Administration of Florida             3,447.641

Carlyle Investment Group, L.P.                           8.621

Carlyle-Insight International Partners, L.P.           918.659

Carlyle-Insight Partners, L.P.                       3,181.349

<PAGE>


                            INSIGHT HEALTH SERVICES CORP.
                                  IRREVOCABLE PROXY



    The undersigned agrees to, and hereby grants to CARLYLE-INSIGHT PARTNERS,
L.P., a Delaware limited partnership, an irrevocable proxy pursuant to the
provisions of Section 212 of the Delaware General Corporation Law to vote, or to
execute and deliver written consents or otherwise act with respect to, all
shares of capital stock (the "Stock") of INSIGHT HEALTH SERVICES CORP. (the
"Company") now owned or hereafter acquired by the undersigned as fully, to the
same extent and with the same effect as the undersigned might or could do under
any applicable laws or regulations governing the rights and powers of
shareholders of a Delaware corporation in connection with the election of
directors of the Company as provided in a certain Voting Agreement, dated as of
October 14, 1997among the purchasers under a certain Securities Purchase
Agreement, dated as of October 14, 1997 among the Company and such purchasers. 
The undersigned hereby affirms that this proxy is given as a condition of said
voting agreement and as such is coupled with an interest and is irrevocable.  It
is further understood by the undersigned that this proxy may be exercised by
CARLYLE-INSIGHT PARTNERS, L.P for the period beginning the date hereof and
ending on the day immediately preceding the Company's 2020 annual stockholders'
meeting, unless sooner terminated in accordance with the provisions of said
voting agreement.

    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE ENFORCEABLE AGAINST
ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.

    
                                  CARLYLE PARTNERS II, L.P.,
                                  a Delaware limited partnership

                                  By:  TC Group, L.L.C., its General Partner


                                       By:       
                                         ---------------------------
                                       Name:     
                                         ---------------------------
                                       Title:         
                                         ---------------------------

<PAGE>


                            INSIGHT HEALTH SERVICES CORP.
                                  IRREVOCABLE PROXY



    The undersigned agrees to, and hereby grants to CARLYLE-INSIGHT
PARTNERS, L.P., a Delaware limited partnership, an irrevocable proxy
pursuant to the provisions of Section 212 of the Delaware General
Corporation Law to vote, or to execute and deliver written consents or
otherwise act with respect to, all shares of capital stock (the
"Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now owned or
hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any
applicable laws or regulations governing the rights and powers of
shareholders of a Delaware corporation in connection with the election
of directors of the Company as provided in a certain Voting Agreement,
dated as of October 14, 1997among the purchasers under a certain
Securities Purchase Agreement, dated as of October 14, 1997 among the
Company and such purchasers.  The undersigned hereby affirms that this
proxy is given as a condition of said voting agreement and as such is
coupled with an interest and is irrevocable.  It is further understood
by the undersigned that this proxy may be exercised by CARLYLE-INSIGHT
PARTNERS, L.P for the period beginning the date hereof and ending on
the day immediately preceding the Company's 2020 annual stockholders'
meeting, unless sooner terminated in accordance with the provisions of
said voting agreement.

    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE
ENFORCEABLE AGAINST ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.

    
                        CARLYLE PARTNERS III, L.P.,
                        a Delaware limited partnership

                        By:  TC Group, L.L.C., its General Partner


                             By:       
                               ---------------------------
                             Name:     
                                  ---------------------------
                             Title:         
                                    ---------------------------

<PAGE>

                       INSIGHT HEALTH SERVICES CORP.
                             IRREVOCABLE PROXY



    The undersigned agrees to, and hereby grants to CARLYLE-INSIGHT
PARTNERS, L.P., a Delaware limited partnership, an irrevocable proxy
pursuant to the provisions of Section 212 of the Delaware General
Corporation Law to vote, or to execute and deliver written consents or
otherwise act with respect to, all shares of capital stock (the
"Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now owned or
hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any
applicable laws or regulations governing the rights and powers of
shareholders of a Delaware corporation in connection with the election
of directors of the Company as provided in a certain Voting Agreement,
dated as of October 14, 1997, among the purchasers under a certain
Securities Purchase Agreement, dated as of October 14, 1997 among the
Company and such purchasers.  The undersigned hereby affirms that this
proxy is given as a condition of said voting agreement and as such is
coupled with an interest and is irrevocable.  It is further understood
by the undersigned that this proxy may be exercised by CARLYLE-INSIGHT
PARTNERS, L.P for the period beginning the date hereof and ending on
the day immediately preceding the Company's 2020 annual stockholders'
meeting, unless sooner terminated in accordance with the provisions of
said voting agreement.

    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE
ENFORCEABLE AGAINST ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.


                        CARLYLE INTERNATIONAL PARTNERS II, L.P.,
                        Cayman Islands exempted limited partnership

                        By:  TC Group, L.L.C., its General Partner


                             By:       
                                ----------------------------
                             Name:     
                                 ---------------------------
                             Title:         
                                  --------------------------

<PAGE>

                       INSIGHT HEALTH SERVICES CORP.
                             IRREVOCABLE PROXY



    The undersigned agrees to, and hereby grants to CARLYLE-INSIGHT
PARTNERS, L.P., a Delaware limited partnership, an irrevocable proxy
pursuant to the provisions of Section 212 of the Delaware General
Corporation Law to vote, or to execute and deliver written consents or
otherwise act with respect to, all shares of capital stock (the
"Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now owned or
hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any
applicable laws or regulations governing the rights and powers of
shareholders of a Delaware corporation in connection with the election
of directors of the Company as provided in a certain Voting Agreement,
dated as of October 14, 1997among the purchasers under a certain
Securities Purchase Agreement, dated as of October 14, 1997 among the
Company and such purchasers.  The undersigned hereby affirms that this
proxy is given as a condition of said voting agreement and as such is
coupled with an interest and is irrevocable.  It is further understood
by the undersigned that this proxy may be exercised by CARLYLE-INSIGHT
PARTNERS, L.P for the period beginning the date hereof and ending on
the day immediately preceding the Company's 2020 annual stockholders'
meeting, unless sooner terminated in accordance with the provisions of
said voting agreement.

    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE
ENFORCEABLE AGAINST ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.

                        CARLYLE INTERNATIONAL PARTNERS III, L.P.,
                        a Cayman Islands exempted limited partnership

                        By:  TC Group, L.L.C., its General Partner


                             By:       
                                ---------------------------
                             Name:     
                                   -------------------------
                             Title:         
                                    ------------------------

<PAGE>

                       INSIGHT HEALTH SERVICES CORP.
                             IRREVOCABLE PROXY



    The undersigned agrees to, and hereby grants to CARLYLE-INSIGHT
PARTNERS, L.P., a Delaware limited partnership, an irrevocable proxy
pursuant to the provisions of Section 212 of the Delaware General
Corporation Law to vote, or to execute and deliver written consents or
otherwise act with respect to, all shares of capital stock (the
"Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now owned or
hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any
applicable laws or regulations governing the rights and powers of
shareholders of a Delaware corporation in connection with the election
of directors of the Company as provided in a certain Voting Agreement,
dated as of October 14, 1997, among the purchasers under a certain
Securities Purchase Agreement, dated as of October 14, 1997 among the
Company and such purchasers.  The undersigned hereby affirms that this
proxy is given as a condition of said voting agreement and as such is
coupled with an interest and is irrevocable.  It is further understood
by the undersigned that this proxy may be exercised by CARLYLE-INSIGHT
PARTNERS, L.P for the period beginning the date hereof and ending on
the day immediately preceding the Company's 2020 annual stockholders'
meeting, unless sooner terminated in accordance with the provisions of
said voting agreement.

    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE
ENFORCEABLE AGAINST ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.


                        C/S INTERNATIONAL PARTNERS,
                        a Cayman Islands general partnership

                        By:  TC Group, L.L.C., its General Partner


                             By:       
                                --------------------------------
                             Name:     
                                  -------------------------------
                             Title:         
                                    -----------------------------

<PAGE>

                       INSIGHT HEALTH SERVICES CORP.
                             IRREVOCABLE PROXY



    The undersigned agrees to, and hereby grants to CARLYLE-INSIGHT
PARTNERS, L.P., a Delaware limited partnership, an irrevocable proxy
pursuant to the provisions of Section 212 of the Delaware General
Corporation Law to vote, or to execute and deliver written consents or
otherwise act with respect to, all shares of capital stock (the
"Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now owned or
hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any
applicable laws or regulations governing the rights and powers of
shareholders of a Delaware corporation in connection with the election
of directors of the Company as provided in a certain Voting Agreement,
dated as of October 14, 1997, among the purchasers under a certain
Securities Purchase Agreement, dated as of October 14, 1997 among the
Company and such purchasers.  The undersigned hereby affirms that this
proxy is given as a condition of said voting agreement and as such is
coupled with an interest and is irrevocable.  It is further understood
by the undersigned that this proxy may be exercised by CARLYLE-INSIGHT
PARTNERS, L.P for the period beginning the date hereof and ending on
the day immediately preceding the Company's 2020 annual stockholders'
meeting, unless sooner terminated in accordance with the provisions of
said voting agreement.

    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE
ENFORCEABLE AGAINST ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.



                        STATE BOARD OF ADMINISTRATION OF
                        FLORIDA, 
                        a separate account maintained pursuant to an
                        Investment Management Agreement dated as of
                        September 6, 1996 between the State Board of
                        Administration of Florida, Carlyle Investment
                        Group, L.P. and Carlyle Investment
                        Management, L.L.C.

                        By:  Carlyle Investment Management, L.L.C.,
                        as Investment Manager

                        By:       
                           ------------------------
                        Name:     
                             ----------------------
                        Title:         
                             ----------------------

<PAGE>

                       INSIGHT HEALTH SERVICES CORP.
                             IRREVOCABLE PROXY



    The undersigned agrees to, and hereby grants to CARLYLE-INSIGHT
PARTNERS, L.P., a Delaware limited partnership, an irrevocable proxy
pursuant to the provisions of Section 212 of the Delaware General
Corporation Law to vote, or to execute and deliver written consents or
otherwise act with respect to, all shares of capital stock (the
"Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now owned or
hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any
applicable laws or regulations governing the rights and powers of
shareholders of a Delaware corporation in connection with the election
of directors of the Company as provided in a certain Voting Agreement,
dated as of October 14, 1997, among the purchasers under a certain
Securities Purchase Agreement, dated as of October 14, 1997 among the
Company and such purchasers.  The undersigned hereby affirms that this
proxy is given as a condition of said voting agreement and as such is
coupled with an interest and is irrevocable.  It is further understood
by the undersigned that this proxy may be exercised by CARLYLE-INSIGHT
PARTNERS, L.P for the period beginning the date hereof and ending on
the day immediately preceding the Company's 2020 annual stockholders'
meeting, unless sooner terminated in accordance with the provisions of
said voting agreement.

    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE
ENFORCEABLE AGAINST ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.


                        CARLYLE INVESTMENT GROUP, L.P.,
                        a Delaware limited partnership

                        By:  TC Group, L.L.C., its General Partner


                             By:       
                                -----------------------
                             Name:     
                                  ---------------------
                             Title:         
                                  ---------------------

<PAGE>

                       INSIGHT HEALTH SERVICES CORP.
                             IRREVOCABLE PROXY



    The undersigned agrees to, and hereby grants to CARLYLE-INSIGHT
PARTNERS, L.P., a Delaware limited partnership, an irrevocable proxy
pursuant to the provisions of Section 212 of the Delaware General
Corporation Law to vote, or to execute and deliver written consents or
otherwise act with respect to, all shares of capital stock (the
"Stock") of INSIGHT HEALTH SERVICES CORP. (the "Company") now owned or
hereafter acquired by the undersigned as fully, to the same extent and
with the same effect as the undersigned might or could do under any
applicable laws or regulations governing the rights and powers of
shareholders of a Delaware corporation in connection with the election
of directors of the Company as provided in a certain Voting Agreement,
dated as of October 14, 1997, among the purchasers under a certain
Securities Purchase Agreement, dated as of October 14, 1997 among the
Company and such purchasers.  The undersigned hereby affirms that this
proxy is given as a condition of said voting agreement and as such is
coupled with an interest and is irrevocable.  It is further understood
by the undersigned that this proxy may be exercised by CARLYLE-INSIGHT
PARTNERS, L.P for the period beginning the date hereof and ending on
the day immediately preceding the Company's 2020 annual stockholders'
meeting, unless sooner terminated in accordance with the provisions of
said voting agreement.

    THIS PROXY SHALL REMAIN IN FULL FORCE AND EFFECT AND BE
ENFORCEABLE AGAINST ANY DONEE, TRANSFEREE OR ASSIGNEE OF THE STOCK.

    Dated this 14th day of October, 1997.



                        CARLYLE-INSIGHT INTERNATIONAL
                        PARTNERS, L.P., 
                        a Cayman Islands exempted limited partnership

                        By:  TC Group, L.L.C., its General Partner


                             By:       
                                ----------------------------
                             Name:     
                                  --------------------------
                             Title:         
                                  --------------------------




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