ADAC LABORATORIES
S-3, 1997-08-21
X-RAY APPARATUS & TUBES & RELATED IRRADIATION APPARATUS
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<PAGE>   1
    As filed with the Securities and Exchange Commission on August 21, 1997.

                                                            Registration No. 33-

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM S-3
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

                                ADAC LABORATORIES
                                -----------------
             (Exact name of registrant as specified in its charter)

                                   California
         -------------------------------------------------------------
         (State or other jurisdiction of incorporation or organization)

                                   94-1725806
                      ------------------------------------
                      (I.R.S. Employer Identification No.)

                                 540 Alder Drive
                           Milpitas, California 95035
                                 (408) 321-9100
        -----------------------------------------------------------------
        (Address, including zip code and telephone number, including area
               code, of Registrant's principal executive offices)

                               KAREN L. MASTERSON
                       VICE PRESIDENT AND GENERAL COUNSEL
                                ADAC LABORATORIES
                                 540 ALDER DRIVE
                           MILPITAS, CALIFORNIA 95035
                                 (408) 321-9100
            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)

        Approximate date of commencement of proposed sale to the public:
        ----------------------------------------------------------------
   From time to time after the effective date of this Registration Statement.

        If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box. [ ]

        If any of the securities being registered on this Form are to be offered
on a delayed or continuous basis pursuant to Rule 415 under the Securities Act
of 1933, other than securities offered only in connection with dividend or
interest reinvestment plans, check the following box. [X]

        If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, check the following box and
list the Securities Act registration statement number of earlier effective
registration statement for the same offering. [ ]

        If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [ ]

        If delivery of the prospectus is expected to be made pursuant to Rule
434, please check the following box. [ ]

        THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a),
MAY DETERMINE.


<PAGE>   2


                         CALCULATION OF REGISTRATION FEE


<TABLE>
<CAPTION>
==============================================================================================
Title of Each                           Proposed           Proposed
Class of                                Maximum            Maximum
Securities to       Amount to be        Offering Price     Aggregate          Amount of
be Registered       Registered          Per Share (1)      Offering Price(1)  Registration Fee
- -------------       -------------       --------------     -----------------  ----------------

<S>                 <C>                 <C>                <C>                <C>      
Common Stock        307,658             (1) $17.94         $5,519,384.52      $1,672.54

==============================================================================================
</TABLE>

(1)     Estimated solely for the purpose of calculating the registration fee
        pursuant to Rule 457(c) of the Securities Act of 1933, as amended, based
        on the average of the high and low prices of the Common Stock on the
        Nasdaq National Market on August 18, 1997.


<PAGE>   3


                                 307,658 SHARES


                            [ADAC LABORATORIES LOGO]

                                  COMMON STOCK
                                 ---------------

        This Prospectus relates to the public offering, which is not being
underwritten, of up to 307,658 shares of Common Stock, no par value per share
(the "Shares"), of ADAC Laboratories ("ADAC" or the "Company"), which may be
offered from time to time by certain shareholders of the Company or by pledgees,
donees, transferees or other successors in interest that receive such Shares as
a gift, partnership distribution or other non-sale related transfer (the
"Selling Shareholders"). The Company will not receive any of the proceeds from
the sale of the Shares offered hereby.

        Of the 307,658 Shares offered hereby, 187,658 of the Shares were
originally issued by the Company in connection with the Company's acquisition of
Photon Diagnostic Technologies, Inc., a Florida corporation ("Photon"), and
Cortet, Inc., a Florida corporation ("Cortet"), and 120,000 of the Shares are
issuable upon exercise of certain warrants granted Bain & Company,
Inc. ("Bain") in connection with Bain's rendering of certain consulting
services to the Company. In the Photon and Cortet acquisitions, the Shares were
issued pursuant to the exemptions from the registration requirements of the
Securities Act of 1933, as amended (the "Securities Act"), provided by Section
4(2) of the Securities Act and Rule 505 of Regulation D promulgated under the
Securities Act, respectively. The Warrants granted Bain were issued pursuant to
the exemption provided by Section 4(2) of the Securities Act. The Shares are
being registered by the Company pursuant to the Agreement and Plan of
Reorganization dated as of February 3, 1997 by and among ADAC, J.D. Technical
Services, Inc., a wholly owned subsidiary of ADAC, Photon and Sergio F. Cabrera,
the sole shareholder of Photon, and the Agreement and Plan of Reorganization
dated as of March 31, 1997 by and among ADAC, ADAC Acquisition Corp., a wholly
owned subsidiary of ADAC, Cortet, and the designated shareholders of Cortet, and
at the request of Bain.

         The Shares may be offered by the Selling Shareholders from time to time
in transactions in the over-the-counter market at prices prevailing therein, in
negotiated transactions at such prices as may be agreed upon, or in a
combination of such methods of sale. See "Plan of Distribution." The price at
which any of the Shares may be sold, and the commissions, if any, paid in
connection with any such sale are unknown and may vary from transaction to
transaction.

        The Company's Common Stock is traded on the Nasdaq National Market under
the symbol "ADAC". On August 18, 1997, the closing price for the Common Stock
was $18.125.

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

        SEE "RISK FACTORS" FOR A DISCUSSION OF CERTAIN INFORMATION THAT SHOULD
BE CONSIDERED IN CONNECTION WITH AN INVESTMENT IN THE COMMON STOCK OFFERED
HEREBY.

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

         THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
         SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
         NOR HAS THE SECURITIES EXCHANGE COMMISSION OR ANY STATE SECURITIES
         COMMISSION PASSED UPON THE ACCURACY OR 


                                       1


<PAGE>   4


         ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A
         CRIMINAL OFFENSE. 


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

        The Company has agreed to pay certain expenses in connection with the
offering of the Shares, estimated at approximately $6,000. The Selling
Shareholders and any broker-dealers or agents that participate with the Selling
Shareholders in the distribution of the Shares may be deemed to be
"underwriters" within the meaning of Section 2(11) of the Securities Act, and
any commissions received by them and any profit on the resale of the Shares
purchased by them may be deemed to be underwriting commissions or discounts
under the Securities Act.

        No person is authorized in connection with the offering made hereby to
give any information or to make any representation other than as contained in
this Prospectus and, if given or made, such information or representation must
not be relied upon as having been authorized by the Company, any Selling
Shareholder or by any other person. This Prospectus does not constitute an offer
to sell, or a solicitation of an offer to buy, any security other than the
Shares, nor does it constitute an offer to or solicitation of any person in any
jurisdiction in which such offer or solicitation cannot lawfully be made.
Neither the delivery of this Prospectus nor any sale made hereunder shall under
any circumstances create any implication that the information contained herein
is correct as of any time subsequent to the date hereof.

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

                  The date of this Prospectus is        , 1997.
                                                 ------- 


                                       2


<PAGE>   5


                              AVAILABLE INFORMATION

        The Company is subject to the informational requirements of the
Securities Exchange Act of 1934, as amended (the "Exchange Act"), and, in
accordance therewith, files reports, proxy statements, information statements,
and other information with the Securities and Exchange Commission (the
"Commission"). Such reports, proxy and information statements and other
information concerning the Company can be inspected and copied at the public
reference facilities maintained by the Commission at Room 1024, Judiciary Plaza,
450 Fifth Street, N.W., Washington, D.C. 20549; as well as the Regional Offices
of the Commission at Seven World Trade Center, Suite 1300, New York, New York,
10048 and Northwest Atrium Center, 500 West Madison Street, Suite 1400, Chicago,
Illinois, 60661. Copies of any such material can be obtained from the Public
Reference Section of the Commission, Washington, D.C., 20549, at prescribed
rates. The Commission maintains a Web site that contains reports, proxy and
information statements and other information regarding registrants that file
electronically with the Commission. The address of the site is
http:\\www.sec.gov. The Common Stock of the Company is listed on the Nasdaq
National Market and such reports, proxy and information statements and other
information concerning the Company may be inspected at the offices of Nasdaq
Operations, 1735 K Street, N.W., Washington, D.C. 20006.

        This Prospectus constitutes a part of a Registration Statement on Form
S-3 (herein, together with all amendments and exhibits, referred to as the
"Registration Statement") filed by the Company with the Commission under the
Securities Act. This Prospectus does not contain all of the information set
forth in the Registration Statement, certain parts of which are omitted in
accordance with the rules and regulations of the Commission. For further
information with respect to the Company and the Shares of Common Stock offered
hereby, reference is hereby made to the Registration Statement. The Registration
Statement may be inspected at the public reference facilities maintained by the
Commission at the addresses set forth in the preceding paragraph. Statements
contained herein concerning any document filed as an exhibit are not necessarily
complete and, in each instance, reference is made to the copy of such document
filed as an exhibit to the Registration Statement. Each such statement is
qualified in its entirety by such reference.


                INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

        The following documents filed with the Commission by the Company are
incorporated in the Prospectus by reference:

        (a) The Company's Annual Report on Form 10-K for the fiscal year ended
September 29, 1996.

        (b) The Company's Quarterly Reports on From 10-Q for the quarters ended
December 29, 1996, March 30, 1997, and June 29, 1997.

        (c) The Company's Proxy Statement for its Annual Meeting of Shareholders
held on May 15, 1997.

        (d) The description of the Company's Common Stock contained in its
Registration Statement on Form 8-A, filed with the Commission under the Exchange
Act, including any amendments or reports filed for the purpose of updating such
description.

        Furthermore, all documents filed by the Company pursuant to Section
13(a), 13(c), 14 or 15(d) of the Exchange Act subsequent to the date of this
Prospectus and prior to the termination of the offering of the Common Stock
shall be deemed to be incorporated into this Prospectus to the extent required,
and to be a part of this Prospectus from the date of filing of such reports and
documents.


                                       3


<PAGE>   6


        Any statement contained in a document incorporated or deemed to be
incorporated by reference herein shall be deemed to be modified or superseded
for purposes of this Prospectus to the extent that a statement contained herein
or in any other subsequently filed document which also is or is deemed to be
incorporated by reference herein modifies or supersedes such statements. Any
such statement so modified or superseded shall not be deemed, except as so
modified or superseded, to constitute a part of this Prospectus.

        The Company will provide without charge to each person to whom this
Prospectus is delivered, upon the request of any such person, a copy of any or
all of the documents described above, other than exhibits to such documents
which are not specifically incorporated by reference herein. Requests should be
directed to Investor Relations at the principal executive offices of the
Company, 540 Alder Drive, Milpitas, California, 95035, telephone (408) 321-9100.


                                   THE COMPANY

        ADAC Laboratories ("ADAC" or "the Company") designs, develops,
manufactures, sells and services medical imaging and health care information
systems used in hospitals and clinics worldwide. The Company's products include
systems for nuclear medicine, laboratory, radiology, cardiology and oncology. In
October 1996, ADAC was awarded the Malcolm Baldrige National Quality Award in
the large manufacturing category by the United States Department of Commerce in
recognition of its performance management system and its achievements in quality
and business performance. ADAC is the first healthcare manufacturer ever to
receive this award. ADAC was incorporated in California on October 14, 1970. Its
principal offices are located at 540 Alder Drive, Milpitas, California, 95035.
Its telephone number at that location is (408) 321-9100.


                                  RISK FACTORS

        The Shares offered hereby involve certain risks. The business
considerations and other information contained in the Company's Annual Report on
Form 10-K for the fiscal year ended September 29, 1996 and the Company's
Quarterly Reports on Form 10-Q for the quarters ended December 29, 1996, March
30, 1997 and June 29, 1997 are incorporated by reference herein. See
"Incorporation of Certain Documents by Reference." Such business considerations
and other information should be carefully considered before purchasing the
Shares.


                                 USE OF PROCEEDS

        All proceeds will be for the account of Selling Shareholders. See
"Selling Shareholders" and "Plan of Distribution." The Company will not receive
any of the proceeds from the sale of the Shares.


                              SELLING SHAREHOLDERS

        The following table sets forth as of August 18, 1997 with respect to
each Selling Shareholder (i) the number of Shares of Common Stock beneficially
owned by each Selling Shareholder and (ii) the number of Shares of Common Stock
to be owned after the offering (assuming all Shares are sold in this offering).
Except as indicated, none of the Selling Shareholders has held any position or
had a material relationship with the Company or any of its affiliates within the
past three years other than as a result of ownership of the Company's Common
Stock.


                                       4


<PAGE>   7


<TABLE>
<CAPTION>
                                                                            NUMBER OF SHARES
                                       NUMBER OF SHARES                     TO BE OWNED
NAME OF SELLING                        BENEFICIALLY     NUMBER OF SHARES    AFTER
SHAREHOLDER                            OWNED            OFFERED HEREBY      OFFERING
- -----------                            -----            --------------      --------
<S>                                  <C>                <C>                    
Sergio F. Cabrera(1)                  28,571             28,571               --
Robert M. Hill(2)(3)                  47,632             47,632               --
John P. Patten(2)(3)                  47,632             47,632               --
Frank C. Westervelt(2)(3)             14,607             14,607               --
Alexander Nikoloff(2)(3)              12,701             12,701               --
Lewis B. Lobel(2)(3)                   9,526              9,526               --
Robert J. Joicy(2)(3)                  6,350              6,350               --
Robert Redmond(2)                      7,938              7,938               --
Tim Perly-Robertson(2)                 7,938              7,938               --
Douglas Bowdoin(2)                     4,763              4,763               --
Bain & Company, Inc.(4)              144,000            120,000             24,000
     Total                           331,658            307,658               --
</TABLE>

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

(1)Sole shareholder of Photon who received an aggregate of 57,143 Shares in
connection with the Company's acquisition of Photon. Of such Shares, 28,572 were
registered pursuant to a Registration Statement on From S-3 declared effective
by the Commission on March 19, 1997. Mr. Cabrera is an employee in the Company's
multi-vendor service business.

(2)Former shareholder of Cortet who received the Shares set forth above in
connection with the Company's acquisition of Cortet.

(3)Messrs. Hill, Patten, Westervelt, Nikoloff, Lobel and Joicy are employees in
the Company's healthcare information systems business.

(4)Over the past three years, the Company has from time to time retained Bain to
provide consulting services in exchange for the payment of consulting fees and
the issuance of the warrants. On August 11, 1994, July 17, 1995 and May 6, 1997,
the Company granted Bain warrants to purchase 60,000, 60,000 and 24,000 Shares
at exercise prices of $6.50, $11.875 and $22.625, respectively. All of the
warrants, except 4,000 Shares under the May 6, 1997 warrant, are fully vested.
Subject to the terms of the May 6, 1997 warrant, these 4,000 Shares will vest in
full on September 6, 1997.


                              PLAN OF DISTRIBUTION

        The Shares covered by this Prospectus may be offered and sold from time
to time by the Selling Shareholders. The Selling Shareholders will act
independently of the Company in making decisions with respect to the timing,
manner and size of each sale. The Selling Shareholders may sell the Shares being
offered hereby on the Nasdaq National Market, or otherwise, at prices and under
terms then prevailing or at prices related to the then current market price or
at negotiated prices. The Shares may be sold through one or more of the
following means of distribution: (a) a block trade in which the broker-dealer so
engaged will attempt to sell Shares as agent, but may position and resell a
portion of the block as principal to facilitate the transaction; (b) purchases
by a broker-dealer as principal and resale by such broker-dealer for its own
account pursuant to this Prospectus; (c) an over-the-counter distribution in
accordance with the rules of the Nasdaq National Market; (d) ordinary brokerage
transactions and transactions in which the broker solicits purchasers; and (e)
in privately negotiated transactions. To the extent required, this Prospectus
may be amended and supplemented from time to time to describe a specific plan of
distribution. In connection with distributions of the Shares or otherwise, the
Selling Shareholders may enter into hedging transactions with broker-dealers or
other financial institutions. In connection with such transactions,
broker-dealers or other financial institutions may engage in short sales of the
Company's Common Stock in the course of hedging the positions they assume with
Selling Shareholders. The Selling Shareholders may also sell the Company's
Common Stock short and redeliver the shares to close out such short positions.
The Selling Shareholders may also enter into option or other transactions with
broker-dealers or other financial institutions which require the delivery to
such broker-dealer or other financial institution of Shares offered hereby,
which Shares such broker-dealer or other financial institution may resell
pursuant to this Prospectus (as supplemented or amended to reflect such
transaction). The Selling Shareholders may also pledge Shares to a broker-dealer
or other financial institution, and, upon a default, such broker-dealer or other
financial institution may effect sales of the pledged 


                                       5


<PAGE>   8


Shares pursuant to this Prospectus (as supplemented or amended to reflect such
transaction). In addition, any Shares that qualify for sale pursuant to Rule 144
may be sold under Rule 144 rather than pursuant to this Prospectus.

        In effecting sales, brokers, dealers or agents engaged by the Selling
Shareholders may arrange for other brokers or dealers to participate. Brokers,
dealers or agents may receive commissions, discounts or concessions from the
Selling Shareholders in amounts to be negotiated prior to the sale. Such brokers
or dealers and any other participating brokers or dealers may be deemed to be
"underwriters" within the meaning of the Securities Act in connection with such
sales, and any such commissions, discounts or concessions may be deemed to be
underwriting discounts or commissions under the Securities Act. The Company will
pay certain expenses incident to the offering and sale of the Shares to the
public, except for any commissions and discounts of underwriters, dealers or
agents and any transfer taxes.

        In order to comply with the securities laws of certain states, if
applicable, the Shares must be sold in such jurisdictions only through
registered or licensed brokers or dealers. In addition, in certain states the
Shares may not be sold unless they have been registered or qualified for sale in
the applicable state or an exemption from the registration or qualification
requirement is available and is complied with.

        The Company has advised the Selling Shareholders that the
anti-manipulation rules of Regulation M under the Exchange Act may apply to
sales of Shares in the market and to the activities of the Selling Shareholders
and their affiliates. In addition, the Company will make copies of this
Prospectus available to the Selling Shareholders and has informed them of the
need for delivery of copies of this Prospectus to purchasers at or prior to the
time of any sale of the Shares offered hereby. The Selling Shareholders may
indemnify any broker-dealer that participates in transactions involving the sale
of the Shares against certain liabilities, including liabilities arising under
the Securities Act.

        At the time a particular offer of Shares is made, if required, a
Prospectus Supplement will be distributed that will set forth the number of
Shares being offered and the terms of the offering, including the name of any
underwriter, dealer or agent, the purchase price paid by any underwriter, any
discount, commission and other item constituting compensation, any discount,
commission or concession allowed or reallowed or paid to any dealer, and the
proposed selling price to the public.

        The Company has agreed with certain of the Selling Shareholders to keep
the Registration Statement of which this Prospectus constitutes a part effective
for up to one year following May 22, 1997, the closing date of the acquisition
of Cortet (which period may be shortened or extended under certain
circumstances). The Company intends to de-register any of the Shares not sold by
the Selling Shareholders at the end of such one year period; however, it is
anticipated that at such time certain of the unsold Shares may be freely
tradable subject to compliance with Rule 144 of the Securities Act.


                                  LEGAL MATTERS

        Certain legal matters in respect of the Shares offered hereby will be
passed upon for the Company by Karen L. Masterson, Vice President and General
Counsel of ADAC, 540 Alder Drive, Milpitas, CA 95035.


                                     EXPERTS

        The consolidated financial statements and related financial statement
schedules of ADAC Laboratories and Subsidiaries, included in the Report on Form
10-K of the Company for the fiscal year ended September 29, 1996 referred to
above, have been audited by Coopers & Lybrand L.L.P., independent accountants,
as set forth in their report dated November 4, 1996, and are incorporated herein
by reference in reliance upon the report of such firm, given upon their
authority as experts in accounting and auditing.


                                       6


<PAGE>   9


                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

14.     OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION

        The following table shows all expenses of the issuance and distribution
of the securities offered hereby, other than underwriting discounts and
commissions:


<TABLE>
              <S>                                            <C>      
               SEC REGISTRATION FEE........................   $1,672.54
               NASDAQ NATIONAL MARKET LISTING FEE .........    2,400.00
               ACCOUNTING FEES AND EXPENSES ...............    2,000.00
               MISCELLANEOUS EXPENSES .....................        0.00
                       TOTAL ..............................   $6,072.54
</TABLE>


        All amounts listed above, except for the registration fees, are
estimates.

15.     INDEMNIFICATION OF DIRECTORS AND OFFICERS

        Section 317 of the California General Corporation Law permits
indemnification of directors, officers and controlling persons of a corporation
under certain conditions and subject to certain limitations. Article VII of the
Registrant's Articles of Incorporation authorizes the Registrant to indemnify
its officers and directors in accordance with the General Corporation Law.
Pursuant to Article VI of the Company's Bylaws and the terms of indemnification
agreements between the Company and each of its directors and executive officers,
the Company has agreed to indemnify and advance expenses to its agents and to
such directors and executive officers, respectively, to the fullest extent
permitted by law. Indemnification also may be granted pursuant to bylaw
provisions that may be adopted in the future, or pursuant to a vote of
shareholders or directors.

16.     EXHIBITS

        (a) Exhibits:


2.1                    Agreement and Plan of Reorganization
                       dated as of February 3, 1997 by and among
                       the Company, J.D. Technical Services, Inc.,
                       Photon Diagnostic Technologies, Inc. and
                       Sergio F. Cabrera

2.2                    Agreement and Plan of Reorganization dated
                       as of March 31, 1997 by and among the Company,
                       ADAC Acquisition Corp., Cortet, Inc. and the Designated
                       Shareholders of Cortet (incorporated by reference to the
                       Company's Quarterly Report on Form 10-Q for the quarter
                       ended June 29, 1997, File No. 0-9428)

4.1                    Warrants to Purchase Common Stock granted
                       August 11, 1994 and July 17, 1995 to
                       Bain & Company, Inc.

5.1                    Opinion of General Counsel of ADAC

23.1                   Consent of Coopers & Lybrand L.L.P.


                                      II-1


<PAGE>   10
23.2                   Consent of General Counsel of ADAC
                       (included in Exhibit 5.1 hereto)

24.1                   Power of Attorney (included on page II-3 of
                       this Registration Statement)


17.     UNDERTAKINGS

(a)     The undersigned registrant hereby undertakes:

        (1) To file, during any period in which offers or sales are being made,
a post-effective amendment to this registration statement:

               (i) To include any prospectus required by Section 10(a)(3) of the
Securities Act of 1933;

               (ii) To reflect in the prospectus any facts or events arising
after the effective date of the registration statement (or the most recent
post-effective amendment thereof) which, individually or in the aggregate,
represents a fundamental change in the information set forth in the registration
statement;

               (iii) To include any material information with respect to the
plan of distribution not previously disclosed in the registration statement or
any material change to such information in the registration statement;

        Provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply
if the registration statement is on Form S-3 or Form S-8 and the information
required to be included in a post-effective amendment by those paragraphs is
contained in periodic reports filed by the registrant pursuant to Section 13 or
Section 15(d) of the Securities Exchange Act of 1934 that are incorporated by
reference in the registration statement.

        (2)    That, for the purpose of determining any liability under the
Securities Act of 1933, each such post-effective amendment shall be deemed to be
a new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

        (3)    To remove from registration by means of a post-effective
amendment any of the securities being registered which remain unsold at the
termination of the offering.

        (4)    The undersigned registrant hereby undertakes that, for purposes
of determining any liability under the Securities Act of 1933, each filing of
the registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
Securities Exchange Act of 1934 (and, where applicable, each filing of an
employee benefit plan's annual report pursuant to Section 15(d) of the
Securities Exchange Act of 1934) that is incorporated by reference in the
registration statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

        (5)    Insofar as indemnification for liabilities arising under the
Securities Act of 1933 may be permitted to directors, officers and controlling
persons of the registrant pursuant to the foregoing provisions, or otherwise,
the registrant has been advised that in the opinion of the Securities and
Exchange Commission such indemnification is against public policy as expressed
in the Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
registrant of expenses incurred or paid by a director, officer or controlling
person of the registrant in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the registrant will, unless in
the opinion of its counsel the matter has been settled by controlling precedent,
submit to a court of appropriate jurisdiction the question whether such
indemnification by it is against public policy as expressed in the Act and will
be governed by the final adjudication of such issue.


                                      II-2


<PAGE>   11


                                   SIGNATURES

          Pursuant to the requirements of the Securities Act of 1933, the
Registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-3 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in Milpitas, California on the date set forth below.

Date:  August 5, 1997                 ADAC LABORATORIES
                                         (Registrant)

                                      By:  /s/ David L.Lowe
                                         ------------------------------------- 
                                               David L. Lowe,
                                               Chief Executive Officer
                                               (Principal Executive Officer)

        KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints David L. Lowe and P. Andre Simone and each of
them acting individually, as such person's true and lawful attorneys-in-fact and
agents, each with full power of substitution, for such person, in any and all
capacities, to sign any and all amendments (including post-effective amendments)
to this Registration Statement, and to file same, with all exhibits thereto and
other documents in connection therewith, with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents, and each of them,
full power and authority to do and perform each and every act and thing
requisite and necessary to be done in connection therewith, as fully to all
intents and purposes as such person might or could do in person, hereby
ratifying and confirming all that said attorneys-in-fact and agents, or any of
them, or their or his or her substitutes, may do or cause to be done by virtue
thereof.

        Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed below by the following persons in
the capacities and on the dates indicated.

SIGNATURE                  CAPACITIES                             DATE
- ---------                  ----------                             ----

/s/ David L. Lowe          Chairman of the Board, Chief          August 5, 1997
- --------------------       Executive Officer and Director           
David L. Lowe              (Principal Executive Officer)



/s/ P. Andre Simone        Vice President, Chief Financial       August 5, 1997
- --------------------       Officer, and Treasurer (Principal
P. Andre  Simone           Financial and Accounting Officer) 



/s/ Stanley D. Czerwinski  Director                              August 5, 1997
- --------------------
Stanley D. Czerwinski



/s/ R. Andrew Eckert       President, Chief Operating Officer    August 5, 1997
- --------------------       and Director
R. Andrew Eckert           


                                      II-3


<PAGE>   12


SIGNATURE                  CAPACITIES                             DATE
- ---------                  ----------                             ----


/s/ Graham O. King         Director                              August 5, 1997
- --------------------
Graham O. King




/s/ F. David Rollo         Director                              August 5, 1997
- --------------------
F. David Rollo



/s/ Edmund  H. Shea, Jr.   Director                              August 5, 1997
- --------------------
Edmund H. Shea, Jr.


                                      II-4


<PAGE>   13


                                  EXHIBIT INDEX



EXHIBIT NAME                                                     PAGE NO.


2.1     Agreement and Plan of Reorganization dated as of
        February 3, 1997 by and among the Company,
        J.D. Technical Services, Inc., Photon Diagnostic
        Technologies, Inc. and  Sergio F. Cabrera

2.2     Agreement and Plan of Reorganization dated
        as of March 31, 1997 by and among the Company,
        ADAC Acquisition Corp., Cortet, Inc. and the Designated
        Shareholders of Cortet (incorporated by reference to the
        Company's Quarterly Report on Form 10-Q for the
        quarter ended June 29, 1997, File No. 0-9428)

4.1     Warrants to Purchase Common Stock granted August 11, 
        1994 and July 17, 1995 to Bain & Company, Inc.

5.1     Opinion of General Counsel of ADAC

23.1    Consent of Coopers & Lybrand L.L.P.

23.2    Consent of General Counsel of ADAC (included
        in Exhibit 5.1 hereto)

24.1    Power of Attorney (included on page II-3 of this
        Registration Statement)


                                      II-5



<PAGE>   1


                                                                     EXHIBIT 2.1



                      AGREEMENT AND PLAN OF REORGANIZATION


        THIS AGREEMENT AND PLAN OF REORGANIZATION (this "Agreement") is made and
entered into as of February 3, 1997, by and among: ADAC LABORATORIES, a
California corporation ("ADAC"); J.D. TECHNICAL SERVICES, INC., a Delaware
corporation ("Sub"); PHOTON DIAGNOSTIC TECHNOLOGIES, INC., a Florida corporation
(the "Company"); and SERGIO F. CABRERA ("Shareholder").

                                    RECITALS

        A. ADAC, Sub and the Company intend to effect a merger of the Company
into Sub in accordance with this Agreement and the laws of the States of
Delaware and Florida (the "Merger"). Upon consummation of the Merger, the
Company will cease to exist.

        B. It is intended that the Merger qualify as a tax-free reorganization
within the meaning of [Section 368(a)]of the Internal Revenue Code of 1986, as
amended (the "Code"). For accounting purposes, it is intended that the Merger be
treated as a "pooling of interests."

                                    AGREEMENT

        ADAC, Sub, the Company and the Shareholder agree as follows:


                                        1

                           DESCRIPTION OF TRANSACTION

        1.1 MERGER OF THE COMPANY INTO SUB. Upon the terms and subject to the
conditions set forth in this Agreement, at the Effective Time (as defined in
Section 1.3), the Company shall be merged into Sub and the separate existence of
the Company shall cease. Sub will be the surviving corporation in the Merger
(the "Surviving Corporation").

        1.2 EFFECT OF THE MERGER. The Merger shall have the effects set forth in
this Agreement, in the applicable provisions of the Delaware General Corporation
Law (the "DGCL") and in the applicable provisions of the Florida Business
Corporation Act (the "FBCA").

        1.3 CLOSING; EFFECTIVE TIME. The consummation of the transactions
contemplated by this Agreement (the "Closing") shall take place at the offices
of ADAC on the date as of which each of the conditions set forth in Articles 5
and 6 has been fulfilled or waived or on such other date as may be jointly
designated by ADAC and the Company (the "Closing Date"). As soon as practicable
after the Closing, a properly executed certificate of merger conforming to the
requirements of the DGCL shall be filed with the Delaware Secretary of State and
a plan and articles of merger conforming to the requirements of the FBCA shall
be filed with the Florida Secretary of State. The Merger shall become effective
at the time said certificate of merger is filed 


                                       1


<PAGE>   2


with the Delaware Secretary of State and said plan and articles of merger are
filed with the Florida Secretary of State (the "Effective Time"). The Company,
Sub and ADAC shall use their best efforts to properly file such documents no
later than the end of the business day following the Closing Date.

        1.4 CERTIFICATE OF INCORPORATION AND BYLAWS; DIRECTORS AND OFFICERS.
Upon the filing of the Certificate of Merger with the Delaware Secretary of
State, the name of the Surviving Corporation shall be changed to ADAC Medical
Technologies, Inc. The Bylaws of Sub, as in effect immediately prior to the
Effective Time, shall become the Bylaws of the Surviving Corporation at the
Effective Time. The directors and officers of the Surviving Corporation
immediately prior to the Effective Time shall be the directors and officers of
Sub immediately after the Effective Time.

        1.5 CONVERSION OF SHARES.

               (a) At the Effective Time, by virtue of the Merger (and without
any action on the part of any shareholder of the Company):

                    (i) any shares of the capital stock, $.01 par value, of the
Company ("Company Stock") then held by the Company or any subsidiary of the
Company (or held in the Company's treasury) shall be canceled; and

                    (ii) except as provided in clause (i) above and subject to
Section 1.5(b), all shares of Company Stock then outstanding shall be converted
into the right to receive in the aggregate that number of shares of the common
stock of ADAC ("ADAC Common Stock") equal to (x) $1,500,000, divided by (y) the
average of the closing sales price of a share of ADAC Common Stock as reported
on the Nasdaq Stock Market for each of the five trading days immediately
preceding the Closing Date (the "Closing Price").

               (b) The shares of ADAC Common Stock into which each outstanding
share of Company Stock is to be converted pursuant to Section 1.5(a)(ii) (as
such fraction may be adjusted in accordance with this Section 1.5(b)) is
referred to as the "Exchange Ratio." If, between the date of this Agreement and
the Effective Time, the outstanding shares of Company Stock or ADAC Common Stock
are changed into a different number or class of shares by reason of any stock
dividend, subdivision, reclassification, recapitalization, split-up, combination
or similar transaction, the Exchange Ratio shall be appropriately adjusted.

        1.6 CLOSING OF THE COMPANY'S TRANSFER BOOKS. At the Effective Time,
holders of certificates representing shares of Company Stock shall cease to have
any rights as shareholders of the Company, and the stock transfer books of the
Company shall be closed with respect to all shares of Company Stock outstanding
immediately prior to the Effective Time. No further transfer of any such shares
of Company Stock shall thereafter be made on such stock transfer books. If,
after the Effective Time, a valid certificate previously representing any of
such shares of Company Stock (a "Company Stock Certificate") is presented to
ADAC, such Company Stock Certificate shall be canceled and exchanged as provided
in Section 1.7.


                                       2


<PAGE>   3


        1.7    EXCHANGE OF CERTIFICATES.

               (a) As soon as practicable after the Effective Time, ADAC will
mail to the holders of Company Stock Certificates (i) a letter of transmittal in
customary form and containing such provisions as ADAC may reasonably require and
(ii) instructions for use in effecting the surrender of Company Stock
Certificates in exchange for certificates representing ADAC Common Stock. Upon
surrender of a Company Stock Certificate to ADAC for exchange, together with a
duly executed letter of transmittal and such other documents as may be
reasonably required by ADAC, the holder of such Company Stock Certificate shall
be entitled to receive in exchange therefor a certificate representing the
number of whole shares of ADAC Common Stock that such holder has the right to
receive pursuant to the provisions of this Article 1 (after withholding the
Holdback Common Stock (as defined in Section 8.1)), and the Company Stock
Certificate so surrendered shall be canceled. Until surrendered as contemplated
by this Section 1.7, each Company Stock Certificate shall be deemed, from and
after the Effective Time, to represent only the right to receive upon such
surrender a certificate representing shares of ADAC Common Stock (and cash in
lieu of any fractional share of ADAC Common Stock) as contemplated by this
Article 1.

               (b) No dividends or other distributions declared or made with
respect to ADAC Common Stock with a record date after the Effective Time shall
be paid to the holder of any unsurrendered Company Stock Certificate with
respect to the shares of ADAC Common Stock represented thereby, and no cash
payment in lieu of any fractional share shall be paid to any such holder, until
such holder surrenders such Company Stock Certificate in accordance with this
Section 1.7 (at which time such holder shall be entitled to receive all such
dividends and distributions and such cash payment, all without interest
thereon).

               (c) No certificates or scrip for fractional shares of ADAC Common
Stock shall be issued, but in lieu thereof each holder of shares of Company
Stock who would otherwise be entitled to receive a certificate or scrip for a
fraction of a share of ADAC Common Stock shall receive from ADAC a cash amount
equal to the market value of one share of ADAC Common Stock (based on the
Closing Price) multiplied by the fraction of a share of ADAC Common Stock to
which such holder would otherwise be entitled.

               (d) ADAC shall not be liable to any holder or former holder of
shares of Company Stock with respect to any shares (or dividends or
distributions with respect thereto) or cash amounts issuable pursuant to this
Article 1 which is delivered to a public official pursuant to any applicable
abandoned property, escheat or similar law.

        1.8 TAX CONSEQUENCES. For federal income tax purposes, the Merger is
intended to constitute a tax-free reorganization within the meaning of Section
368 of the Code. The parties to this Agreement hereby adopt this Agreement as a
"plan of reorganization" within the meaning of the applicable United States
Treasury Regulations. Neither the Company nor ADAC shall take a position
inconsistent with this Section 1.8 on any tax return.


                                       3


<PAGE>   4


        1.9 ACCOUNTING CONSEQUENCES. For accounting purposes, the Merger is
intended to be treated as a "pooling of interests." Neither the Company nor ADAC
shall take any action prior to the Effective Time that could reasonably be
expected to prevent the Merger from being accounted for as a "pooling of
interests."

        1.10 FURTHER ACTION. If at any time after the Effective Time any further
action is determined by ADAC to be necessary or desirable to carry out the
purposes of this Agreement or to vest ADAC as the Surviving Corporation with the
full right, title and possession of and to all assets, property, rights,
privileges, immunities, powers and franchises of the Company, the officers and
directors of ADAC shall be fully authorized (in the name of the Company and
otherwise) to take such action.

        1.11 TRANSFER OF PHOTON MOBILE BUSINESS ASSETS. At or prior to the
Closing Date, the Company shall transfer all of products, assets and liabilities
relating to the Photon Mobile business, as set forth in the Disclosure Schedule
(collectively, the "Mobile Business"), to an affiliate of Shareholder,
TransPhoton Corporation ("TPC"). Such transfer shall be without representation
or warranty, expressed or implied, by the Company and shall be received on an
"AS IS" basis. At the time of such transfer, Shareholder represents and warrants
that (i) the assets constituting the Mobile Business shall constitute less than
10% of the gross assets and net assets of the Company prior to such transfer,
both in terms of historical cost and fair market value, (ii) the sales generated
or associated with the Mobile Business during the prior twelve (12) months shall
constitute less than 10% of the gross sales of all of the products and services
sold by the Company during such period, and (iii) the sales generated or
associated with the Mobile Business during the prior twelve (12) months shall
have generated less than 10% of the gross operating profits of the Company
derived from the sale of all of its products and services during such period.
Shareholder represents and warrants that the transfer of the assets constituting
the Mobile Business are non-operating assets which are not an integral part of
the business of the Company to be acquired by the Surviving Corporation pursuant
to the Merger.


                                        2

                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY

        Except as set forth in the disclosure schedule delivered to ADAC on the
date of this Agreement and signed by the President of the Company (the
"Disclosure Schedule"), the Company and Shareholder represent and warrant to
ADAC as follows:

        2.1    ORGANIZATION; SUBSIDIARIES; CAPITALIZATION.

               (a) The Company is a corporation duly organized, validly existing
and in good standing under the laws of the State of Florida. The Company has all
necessary power and authority under applicable corporate law and its
organizational documents to own or lease its properties and to carry on its
business as presently conducted. As of the date of this Agreement, the
Disclosure Schedule sets forth a list of all of the Company's "affiliates" or
their "associates" (as 


                                       4


<PAGE>   5


such terms are defined in the rules and regulations of the Securities and
Exchange Commission (the "SEC")). As of the date of this Agreement, the Company
does not own or hold, directly or indirectly, any debt or equity securities of,
or has any other interest in, any corporation, partnership, joint venture or
other entity, and the Company has not entered into any agreement to acquire any
such interest.

               (b) Each of the Company and its affiliates is qualified to do
business as a foreign corporation, partnership or limited liability company, as
the case may be, and is in good standing, under the laws of all jurisdictions
where the nature of its business requires such qualification and where the
failure to so qualify would have a material adverse effect, a list of which
jurisdictions is set forth in the Disclosure Schedule. For purposes of this
Agreement, material adverse effect, as it applies to the Company, means a
material adverse effect on the business, operations, results, financial
condition or assets of the Company other than as a result of (i) general
economic or industry conditions, or (ii) the performance by the Company of its
obligations, or the exercise by ADAC of its rights under this Agreement.

               (c) As of the date of this Agreement, the authorized capital
stock of the Company consists of: one thousand two hundred fifty shares of
Company Stock, 250 shares of which constitute Class A Stock and the remainder of
which constitutes Class B Stock, of which, as of the date hereof, 100 shares
were issued and outstanding. All the issued and outstanding shares of Company
Stock are validly issued, fully paid and nonassessable and free of preemptive
rights and were issued in compliance with state and federal securities laws.
Except as set forth above, as of the date of this Agreement, (i) there are no
shares of capital stock of the Company authorized, issued or outstanding, (ii)
there are no outstanding subscriptions, options, warrants, stock appreciation
right plans, calls, rights, convertible securities, stockholder rights plans (or
similar plans commonly referred to as "poison pills") or other agreements or
commitments of any character relating to issued or unissued capital stock or
other securities of the Company or any of its subsidiaries, or obligating the
Company or any other party to issue, transfer or sell any shares of the capital
stock or other securities of the Company or any of its subsidiaries, and (iii)
there are no other outstanding securities convertible into, exchangeable for or
evidencing the right to subscribe for any shares of the capital stock or other
securities of the Company or any of its subsidiaries or any successor
corporation or controlling person of such successor corporation. All outstanding
securities of the Company are held by Shareholder as set forth in the Disclosure
Schedule.

               (d) Neither the Company nor any of its affiliates owns any ADAC
Common Stock.

               (e) A certified copy of the Articles of Incorporation, as amended
to date, of the Company, a complete and accurate copy of the Bylaws of the
Company, as amended to date, and a good standing certificate from the State of
Florida of a recent date have been delivered to ADAC.

        2.2    FINANCIAL STATEMENTS; ABSENCE OF LIABILITIES.

               (a) The Company's unaudited interim financial statements as of
January 17, 1997 and for the period then ended (the "Unaudited Financial
Statements") were prepared in 


                                       5


<PAGE>   6


accordance with the books and records of the Company using accounting principles
applied on a consistent basis throughout the period involved and fairly present
the financial position of the Company as of the date thereof and the results of
its operations and cash flows for the period indicated.

               (b) The Company has no Liabilities, except for (i) Liabilities
that are disclosed in the Unaudited Financial Statements, or (ii) Liabilities
that were incurred after January 17, 1997 in the ordinary course of business and
which do not exceed $5,000 in the aggregate. As used herein, "Liabilities" shall
mean any liability or obligation of any kind or nature, secured or unsecured
(whether absolute, accrued, contingent or otherwise, and whether due or to
become due). The Company has no Liabilities to any officer, director,
shareholder, affiliate or associate.

               (c) The Disclosure Schedule sets forth as of January 17, 1997 and
will set forth as of the Closing Date a true and correct list of the Company's
inventory and accounts receivable. All such inventory is in good and saleable
condition, and all such accounts receivable are current and collectible.

        2.3 ABSENCE OF CERTAIN CHANGES OR EVENTS. Since January 17, 1997, there
has not been (a) any change, or any development or combination of changes or
developments that has had or would reasonably be expected to have a material
adverse effect on the Company, (b) any damage, destruction or loss, whether or
not covered by insurance, that has had or would reasonably be expected to have a
material adverse effect on the Company or (c) any transaction, commitment,
dispute or other event or condition (financial or otherwise) of any character
(whether or not in the ordinary course of business) which would be prohibited by
Section 4.2(b) if it were to occur or be effected between the date of this
Agreement and the Effective Time.

        2.4 TAX MATTERS

               (a) The Company is now, and at all times since its incorporation
has been, a valid S Corporation under the Code. The Company has filed, within
the time (including any extensions of applicable due dates) and in the manner
prescribed by law, all returns, declaration, reports, estimates, information
returns, statements and reports ("Returns"), required to be filed under federal,
state, local or any foreign laws by the Company.

               (b) The Company has, within the time (including any extensions of
applicable due dates) and in the manner prescribed by law, reported, withheld
and paid all Taxes (as defined below) required to be reported, withheld and/or
paid by the Company.

               (c) The Company has accrued on its books an amount sufficient to
cover all Taxes that will become due and payable by the Company for the period
ending on the Closing Date.

               (d) The Company has not filed (and will not file prior to the
Closing Date) any consent agreement under Section 341(f) of the Code or agreed
to have Section 341(f)(2) of the 


                                       6


<PAGE>   7


Code apply to any disposition of any subsection (f) asset (as such term is
defined in Section 341(f)(4) of the Code) owned by Company.

               (e) To the Company's knowledge, the Transactions (as defined in
Section 2.14) will not result in the payment of any "excess parachute payment"
within the meaning of Section 280G of the Code, and there is no agreement, plan
or arrangement covering any employee or independent contractor of the Company
that would give rise to any payment that would not be deductible pursuant to
Section 280G of the Code.

               (f) No outstanding debt obligation of Company is "corporate
acquisition indebtedness" within the meaning of Section 279(b) of the Code.

               (g) For purposes of this Agreement, "Taxes" shall mean all taxes,
charges, fees, levies, or other assessments of whatever kind or nature,
including, without limitation, all net income, gross income, gross receipts,
sales, use, value-added, ad valorem, transfer, franchise, profits, license,
withholding, payroll, employment, excise, estimated, severance, stamp, net
worth, environmental, occupancy or property taxes, customs duties, fees,
assessments or charges of any kind whatsoever (together with any interest and
any penalties, additions to tax or additional amounts) imposed by any taxing
authority (domestic or foreign) upon or payable by the Company or any of its
subsidiaries.

        2.5 CONTRACTS.

               (a) As of the date of this Agreement, except as set forth in the
Disclosure Schedule, the Company is not a party to, or bound by, any
undischarged written or oral:

                    (i) contract for the employment for any period of time
whatsoever, or restricting the employment, of any employee;

                    (ii) consulting agreement, except for those that both (A) do
not call for payment in an annual amount in excess of $5,000 in the aggregate
and (B) were entered into in the ordinary course of business;

                    (iii) contract or agreement restricting in any manner the
Company's right to compete with any other person or restricting the Company's or
any of its affiliates' listed on Schedule 2.1(a) right to sell to or purchase
from any other person;

                    (iv) contract or other instrument that (A) provides for the
receipt or expenditure of cash or other consideration in excess of $5,000,
except sales and purchase orders accepted in the ordinary course of business,
(B) was entered into outside the ordinary course of business, (C) is material
and has an original term of more than one year and cannot be terminated by the
Company without penalty with 30 days notice or less, (D) relates to the license
of any patent, copyright, trade secret or other proprietary right to or from the
Company, (E) includes provisions restricting or, in any material respect,
affecting the development, manufacture or distribution of the 


                                       7


<PAGE>   8


Company's intellectual property, products or services, (F) provides for
indemnification by the Company with respect to infringement of proprietary
rights, or (G) is otherwise material; or

                    (v) debt instrument or evidence of indebtedness or any
guarantee, loan agreement or transaction, including with any affiliate of the
Company.

All material contracts, leases, subleases and other instruments, whether or not
of the types referred to in this Section 2.5(a), to which the Company or any of
its affiliates is a party or by which the Company or any of its affiliates is
bound (collectively "Company Contracts") are in full force and effect and are
binding upon the Company and, to the Company's knowledge, are binding on the
other parties thereto, except as enforcement thereof may be limited by
bankruptcy, insolvency, reorganization, moratorium or other similar laws, both
state and federal, affecting the enforcement of creditors' rights or remedies in
general from time to time in effect and the exercise by courts of equity powers.
No material default by the Company has occurred under any of the Company
Contracts and, to the Company's knowledge, (A) no material default by any of the
other contracting parties has occurred under any of the Company Contracts and
(B) no event has occurred which with the giving of notice or the lapse of time,
or both, would constitute a material default by the Company or any of its
subsidiaries or any of the other contracting parties.

               (b) The Company possesses all material licenses, permits, and
governmental approvals and authorizations which are required in order to operate
its business as presently conducted and the Company is in compliance in all
material respects with all such licenses, permits, approvals and authorizations.

               (c) The Disclosure Schedule sets forth a list of all claims made
or, to the Company's knowledge, threatened against the Company under each
Company Contract presently or heretofore in effect (including claims for back
charges, rebates, price reductions, breaches of product or service warranties or
for product or service liability for products manufactured or sold).

        2.6 INTELLECTUAL PROPERTY. The Company owns or possesses sufficient
legal rights to all patents, trademarks, service marks, trade names, copyrights,
trade secrets, information and other proprietary rights and processes necessary
for its business as now conducted and as proposed to be conducted, without any
infringement of the rights of others. The Disclosure Schedule sets forth all
domestic and foreign patents and patent applications, registered trademarks,
material common law trademarks, service marks, trade names, symbols and logos
used, controlled or owned by the Company, and the rights of the Company with
respect to each. There are no outstanding options, licenses or agreements of any
kind relating to the foregoing, nor is the Company bound by or a party to any
options, licenses or agreements of any kind with respect to the patents,
trademarks, service marks, trade names, copyrights, trade secrets, licenses,
information and other proprietary rights and processes of any other person or
entity other than such licenses or agreements arising from the purchase of "off
the shelf" or standard products. The Company is not violating or infringing, and
has not at any time during the last five years, violated or infringed or
received any communications alleging that the Company has violated or infringed
or, by conducting its business as proposed, would violate or infringe any of the
patents, trademarks, service marks, trade names, copyrights or trade secrets or
other proprietary rights of any other person or entity. The Company 


                                       8


<PAGE>   9


is not aware that any of its employees is obligated under any contract
(including licenses, covenants or commitments of any nature) or other agreement,
or subject to any judgment, decree or order of any court or administrative
agency, that would interfere with their duties to the Company or that would
conflict with the Company's business as proposed to be conducted in any material
respect. Neither the execution nor delivery of this Agreement, nor the carrying
on of the Company's business by the employees of the Company, nor the conduct of
the Company's business as proposed to be conducted, will, to the Company's
knowledge, conflict with or result in a breach of the terms, conditions or
provisions of, or constitute a default under, any contract, covenant or
instrument under which any employee is now obligated. The Company does not
believe it is or will be necessary to utilize any inventions, trade secrets or
proprietary information of any of its employees made prior to their employment
by the Company, except for inventions, trade secrets or proprietary information
that have been validly assigned to the Company.

        2.7    EMPLOYEES.

               (a) The Disclosure Schedule sets forth a complete and accurate
list of each bonus, deferred compensation, incentive compensation, stock
purchase, stock option, severance or termination pay, hospitalization or other
medical, life or other insurance, supplemental unemployment benefits,
profit-sharing, flexible benefit, dependent care, educational assistance,
pre-Tax premium, pension, or retirement plan, program, agreement or arrangement
(collectively, the "Company Employee Plans"), sponsored, maintained or
contributed to or required to be contributed to by the Company or any of its
affiliates for the benefit of any employee of the Company or any of its
affiliates ("Employee").

               (b) The Company has no plan or commitment, whether legally
binding or not, to create any additional Company Employee Plan, or any plan or
commitment to modify or change any existing Company Employee Plan, other than
changes to comply with applicable law, that would affect any Employee.

               (c) No Company Employee Plan provides death, medical or health
benefits (whether or not insured) with respect to current or former Employees
after any such Employee's retirement or other termination of service (other than
(i) benefit coverage mandated by applicable law, including, without limitation,
coverage provided pursuant to Section 4980B of the Code and (ii) deferred
compensation benefits accrued as liabilities on the books of Company).

               (d) With respect to each of the Company Employee Plans
constituting a group health plan within the meaning of Section 5000(b)(1) of the
Code, the provisions of Section 4980B of the Code have been complied with in all
material respects.

               (e) There are no Company Employee Plans intended to be qualified
under Section 401(a) of the Code.

               (f) There is no pending or, to the knowledge of the Company,
threatened Proceeding (as defined in Section 2.9) against the Company or any of
its affiliates or any current or former director, major stockholder, officer or
supervisory employee of the Company or any of its 


                                       9


<PAGE>   10


affiliates, alleging wrongful termination, racial, religious, sexual or age
discrimination, improper post-termination conduct, or breach of contract or
covenant of employment, nor has any third party made any claim against the
Company with respect to the foregoing, nor, to the Company's knowledge, is there
any basis for such a claim or Proceeding.

               (g) All individuals who are performing or have performed services
for the Company and are or were classified as "independent contractors" for tax
purposes qualify for such classification.

               (h) Neither the Company nor Shareholder has received any
communication indicating that any Employee or independent contractor of the
Company intends to terminate his employment or independent contracting
relationship either now or following the Effective Time. To the Company's
knowledge, no Employee, nor any consultant with whom the Company has contracted,
is in violation of any term of any employment contract, proprietary information
agreement or any other agreement relating to the right of any such individual to
be employed by, or to contract with, the Company or any of its affiliates
because of the nature of the business conducted by them; and to the Company's
knowledge the continued employment of such Employees, and the performance of the
Company's and its affiliates' contracts with their respective independent
contractors, will not result in any such violation. The Company has not received
any notice alleging that any such violation has occurred. No Employee has been
granted the right to continued employment by his or her employer or to any
compensation following termination of employment.

                    (i) The Disclosure Schedule sets forth a complete list of
all Employees and all persons performing services as independent contractors for
the Company or any of its affiliates as of the date hereof. The Company has paid
all sums due and owing such persons for all periods ending on or prior to the
Closing Date or has made an appropriate reserve therefor in the Unaudited
Financial Statements.

        2.8 PROPRIETARY INFORMATION AND INVENTIONS AGREEMENTS. Each former and
current employee, officer and independent contractor of the Company has executed
a Proprietary Information and Inventions Agreement substantially in the form
included in the Disclosure Schedule.

        2.9 LITIGATION AND CLAIMS; COMPLIANCE WITH LAW.

               (a) There is no examination, review, investigation, arbitration,
suit, litigation or other proceeding (a "Proceeding") pending or threatened by
or before any court or Governmental Authority (as defined in Section 2.15) in
which the Company is a party or otherwise involved or to which any of the
business or assets of the Company is subject, nor has any third party made any
claim against the Company which could result in any such Proceeding nor, to the
Company's knowledge, is there any basis for any such claim or Proceeding.


                                       10


<PAGE>   11


               (b) The Company is not a party to any decree, order or
arbitration award (or agreement entered into in any Proceeding) with respect to
its properties, assets, personnel or business activities.

               (c) The Company is not and has not at any time since January 1,
1994 been in violation of, or delinquent in respect to, any decree, order or
arbitration award or law, statute or regulation of, or agreement with, or any
material license or material permit from, any Governmental Authority to which
any of its properties, assets, personnel or business activities are subject or
to which any of them is subject, including laws, rules and regulations relating
to the environment, occupational health and safety, employee benefits, wages,
workplace safety, equal employment opportunity and race, religious, sex and age
discrimination.

               (d) There are no actions pending or, to the knowledge of the
Company, threatened (or any basis therefor known to the Company) involving the
prior employment of any of the Company's employees, their use in connection with
the Company's business of any information or techniques allegedly proprietary to
any of their former employers, or their obligations under any agreements with
prior employers.

        2.10   PROPERTIES.

               (a) Schedule 2.10 sets forth a complete list of all property,
tangible or intangible, leased by the Company (the "Leases"). The Company has
previously delivered to ADAC complete and accurate copies of all such Leases.
Each of the Leases is valid, binding and enforceable in accordance with its
terms, and is in full force and effect. The Company is not in default under any
Lease, nor to the Company's knowledge is any other party thereto in default
thereunder, and no event has occurred which (whether with or without notice,
lapse of time or both) would constitute a default by the Company.

               (b) Schedule 2.10 sets forth a complete list of all property,
tangible and intangible, owned by the Company (the "Company Properties"). The
Company Properties are owned by the Company outright, in each case free and
clear of any lien, pledge, hypothecation, mortgage, security interest, claim,
lease, charge, option, right of first refusal, easement, servitude, trust,
transfer restriction or any other restriction or limitation whatsoever (the
"Liens"), except for Liens disclosed in the Financial Statements and notes
thereto. Each of the Company Properties are in good operating condition, subject
to continued repair and replacement in accordance with past practice. The
Company Properties include all of the assets used in or required for the
operation of the Company's business.

               (c) The Company has fire and casualty insurance policies, with
extended coverage (subject to reasonable deductibles), sufficient to allow them
to replace any of their properties that might be damaged or destroyed, and have
liability insurance reasonably adequate to protect them and their financial
condition against the risks involved in the business conducted by them. The
Disclosure Schedule sets forth all such policies. The Company has not taken any
action, or failed to take any action, which might invalidate any of such
policies in whole or in part.


                                       11


<PAGE>   12


               (d)    The Company owns no real property.

        2.11 FULL DISCLOSURE. This Agreement, the Disclosure Schedule and all
other documents delivered by the Company to ADAC or its attorneys or agents in
connection herewith or in connection with the transactions contemplated hereby,
do not contain any untrue statement of a material fact nor, to the Company's
knowledge, omit to state a material fact necessary in order to make the
statements contained herein or therein not misleading.

        2.12 TRANSACTIONS WITH AFFILIATES. Except for compensation of employees,
every transaction between Company and any of its "affiliates" or their
"associates" (as such terms are defined in the rules and regulations of the SEC)
which is currently in effect or was consummated since January 1, 1992, and which
involves more than $5,000 is set forth in the Disclosure Schedule.

        2.13 FINANCIAL ADVISOR. The Company represents and warrants that, no
broker, finder or investment banker is entitled to any brokerage, finder's or
other fee or commission in connection with the Merger or any of the other
Transactions based upon arrangements made by or on behalf of the Company or any
of the Shareholders.

        2.14 ENFORCEABILITY. The Company has the corporate power and authority
to execute, deliver and perform each of the Transactional Agreements (as defined
below) to which it is or will become a party. The execution and delivery of said
Transactional Agreements have been duly and validly authorized by the unanimous
vote of the Board of Directors of the Company and approved by the unanimous vote
or written consent of the shareholders of the Company, and no other corporate
proceedings on the part of the Company are necessary for the Company to
authorize any of the Transactional Agreements, and no such proceedings are
necessary to enable the Company to perform or consummate any of the
Transactions. Said Transactional Agreements (a) have been (or will be) duly
executed and delivered by duly authorized officers of the Company and (b)
constitute (or, when executed by the Company, will constitute) legal, valid and
binding obligations of the Company enforceable against it in accordance with
their terms. For purposes of this Agreement, (i) "Transactional Agreements"
means this Agreement and each of the other agreements and documents referred to
in Sections 5.10, 5.11, 5.12, 5.15 and 5.16; and (ii) "Transactions" means (A)
the execution, delivery and performance of the respective Transactional
Agreements and (B) each of the transactions contemplated by or otherwise
referred to in any of the Transactional Agreements (including the Merger).

        2.15 GOVERNMENTAL CONSENTS; NO CONFLICTS. Except as set forth in the
Disclosure Schedule, there is no requirement applicable to the Company to make
any filing with, or to obtain any permit, authorization, consent or approval of,
any federal, state, local or foreign governmental or regulatory agency,
department, commission or other authority (a "Governmental Authority") as a
condition to the lawful consummation of any of the Transactions. The Company
does not know of any reason why any required permit, authorization, consent or
approval will not be obtained. Neither the execution and delivery of this
Agreement by the Company nor the consummation by the Company of any of the
Transactions will (a) conflict with, violate or result in any breach of any
provision of the Certificate of Incorporation or Bylaws (or comparable charter
documents) of the Company, (b) result in a default (or with notice or lapse of
time or both would result in a default) 


                                       12


<PAGE>   13


under, or impair the rights of the Company or alter the rights or obligations of
any third party under, or require the Company to make any material payment or
become subject to any liability to any third party under, or give rise to any
right of termination, amendment, cancellation, acceleration, repurchase, put or
call under, any of the terms, conditions or provisions of any note, bond,
mortgage, indenture, license agreement, lease or other contract, instrument or
obligation to which the Company is a party or by which the Company or any of its
affiliates or any of their assets may be bound, (c) result in the creation of
any liens, charges or encumbrances on any of the assets of the Company or (d)
conflict with or violate any law, statute, rule, regulation, judgment, order,
writ, injunction, decree or arbitration award applicable to the Company or any
of its assets.


                                        3

                 REPRESENTATIONS AND WARRANTIES OF ADAC AND SUB

        ADAC and Sub represent and warrant to the Company and Shareholder as
follows:

        3.1 SEC FILINGS; FINANCIAL STATEMENTS.

               (a) ADAC has delivered to the Company accurate and complete
copies (excluding copies of exhibits) of each report, registration statement (on
a form other than Form S-8) and definitive proxy statement filed by ADAC with
the SEC between January 1, 1996 and the date of this Agreement (the "ADAC SEC
Documents"). As of the time it was filed with the SEC (or, if amended or
superseded by a filing prior to the date of this Agreement, then on the date of
such filing): (i) each of the ADAC SEC Documents complied in all material
respects with the applicable requirements of the Securities Act or the Exchange
Act (as the case may be); and (ii) none of the ADAC SEC Documents contained any
untrue statement of a material fact or omitted to state a material fact required
to be stated therein or necessary in order to make the statements therein, in
the light of the circumstances under which they were made, not misleading.

               (b) The consolidated financial statements contained in the ADAC
SEC Documents: (i) complied as to form in all material respects with the
published rules and regulations of the SEC applicable thereto; (ii) were
prepared in accordance with generally accepted accounting principles applied on
a consistent basis throughout the periods covered, except as may be indicated in
the notes to such financial statements and (in the case of unaudited statements)
as permitted by Form 10-Q of the SEC, and except that unaudited financial
statements may not contain footnotes and are subject to year-end audit
adjustments; and (iii) fairly present the consolidated financial position of
ADAC and its subsidiaries as of the respective dates thereof and the
consolidated results of operations of ADAC and its subsidiaries for the periods
covered thereby.

        3.2 AUTHORITY; BINDING NATURE OF AGREEMENT. Subject to the requisite
approval by the ADAC Board of Directors, each of ADAC and Sub has the corporate
power and authority to perform its obligations under this Agreement. No vote of
ADAC's stockholders is needed to approve the Merger. This Agreement constitutes
the legal, valid and binding obligation of each of ADAC and Sub, enforceable
against it in accordance with its terms.

                                       13


<PAGE>   14


        3.3 VALID ISSUANCE. The ADAC Common Stock to be issued in the Merger
will, when issued in accordance with the provisions of this Agreement, be
validly issued, fully paid and nonassessable.

        3.4 FINANCIAL ADVISOR. ADAC represents and warrants that, no broker,
finder or investment banker is entitled to any brokerage, finder's or other fee
or commission in connection with the Merger or any of the other Transactions
based upon arrangements made by or on behalf of ADAC.


                                        4

               CONDUCT AND TRANSACTIONS PRIOR TO EFFECTIVE TIME;
                              ADDITIONAL AGREEMENTS

        4.1    INFORMATION AND ACCESS.

               (a) During the period from the date of this Agreement through the
Effective Time:

                    (i) the Company shall afford, and shall cause the
independent auditors, counsel and other advisors and representatives
(collectively, "Representatives") of the Company to afford, to ADAC and to
ADAC's Representatives, reasonable access to the properties, books, records
(including filed Tax Returns, Tax Returns in preparation and the audit work
papers and other records of the independent auditors of the Company) and
personnel of the Company in order that ADAC and ADAC's Representatives may have
a full opportunity to make such investigation as ADAC reasonably desires to make
of the Company;

                    (ii) the Company shall permit ADAC and ADAC's
Representatives to make such reasonable inspections of the Company and its
operations as ADAC may reasonably require from time to time; and

                    (iii) the Company shall furnish ADAC and ADAC's
Representatives with, and shall cause the Company's Representatives to furnish
ADAC with, such financial and operating data and other information with respect
to the business and properties of the Company as ADAC or its counsel may
reasonably request from time to time.

               (b) Without limiting the generality of Section 4.1(a), during the
period from the date of this Agreement through the Closing Date, the Company
shall promptly provide ADAC with copies of:

                    (i) all material operating and financial reports prepared by
the Company for its senior management, including copies of the unaudited monthly
balance sheets of the Company and the related unaudited monthly statements of
operations, changes in financial position 


                                       14


<PAGE>   15


and changes in shareholders' equity (with copies of such monthly financial
statements to be delivered to ADAC no later than the 20th day after the last day
of the month to which they relate);

                    (ii) any written materials or written communications sent by
the Company to its shareholders generally in connection with their status as
such; and

                    (iii) any notice, report or other document filed with or
sent to any Governmental Authority in connection with any of the Transactions.

               (c) No investigation by ADAC or any of its Representatives
pursuant to this Section 4.1 shall limit or otherwise affect any representations
or warranties of the Company or any condition to any obligation of ADAC.

        4.2 CONDUCT OF BUSINESS OF THE COMPANY.

               (a) Except as provided in Section 4.2(b), during the period from
the date of this Agreement through the Effective Time, (i) the Company shall
conduct its business in the ordinary and usual course consistent with past
practice and (ii) the Company shall use its best efforts to maintain and
preserve intact its business organization, to keep available the services of its
officers and employees and to maintain satisfactory relations with lessors,
suppliers, contractors, distributors, customers and others having business
relationships with the Company.

               (b) During the period from the date of this Agreement through the
Effective Time, the Company shall not do, and shall not permit any of its
subsidiaries to do, any of the following, without ADAC's prior written consent:

                    (i) declare, set aside or pay any dividend or make any other
distribution in respect of any capital stock;

                    (ii) repurchase, redeem or otherwise acquire any capital
stock of the Company;

                    (iii) issue, deliver, pledge, encumber, sell or transfer, or
authorize or propose the issuance, delivery, pledge, encumbrance, sale or
transfer of, any shares of capital stock of the Company or any securities
convertible into, or rights, warrants or options to acquire, any such shares of
capital stock or other convertible securities, or make any change in its equity
capitalization or to the terms of any option, warrant or other equity security
of the Company that is currently outstanding;

                    (iv) amend the Certificate of Incorporation, Bylaws or other
organizational or charter documents of the Company or adopt any stock purchase
rights plan (or "poison pill");

                    (v) acquire any asset, except in the ordinary course of
business consistent with past practice;


                                       15


<PAGE>   16


                    (vi) sell, lease, pledge or otherwise dispose of or encumber
any of its assets, except in the ordinary course of business consistent with
past practice;

                    (vii) incur any indebtedness for borrowed money, or issue or
sell any debt securities or guarantee, endorse or otherwise become responsible
for any obligation of any other person;

                    (viii) adopt or amend any Company Employee Plan, employment
agreement, severance agreement, special pay arrangement with respect to
termination of employment or other similar arrangement or agreement with any
director, officer or employee of the Company, or enter into or amend any
severance or termination arrangement;

                    (ix) change any compensation payable or to become payable to
any of its officers or employees; or

                    (x) authorize or propose any of the foregoing, or enter into
any contract, agreement, commitment or arrangement contemplating any of the
foregoing.


        4.3 NEGOTIATION WITH OTHERS.

               (a) Until the Closing Date, the Company shall not, and it shall
not authorize or permit any of its officers, directors or employees, directly or
indirectly, to (i) solicit, initiate or knowingly encourage or induce the making
of any Acquisition Proposal, (ii) furnish information regarding the Company or
any of its subsidiaries in connection with an Acquisition Proposal or potential
Acquisition Proposal, (iii) negotiate or engage in discussions with any third
party with respect to any Acquisition Proposal, (iv) approve, endorse or
recommend any Acquisition Proposal or (v) enter into any letter of intent,
contract or other instrument related directly or indirectly to any Acquisition
Proposal or contracts with advisors or consultants. "Acquisition Proposal" shall
mean any proposal (other than any proposal by ADAC) regarding (i) any merger,
consolidation, share exchange, business combination or other similar transaction
or series of related transactions involving the Company; (ii) any sale, lease,
exchange, transfer or other disposition of the assets of the Company or any
subsidiary of the Company constituting more than 10% of the consolidated assets
of the Company or accounting for more than 10% of the consolidated revenues of
the Company in any one transaction or in a series of related transactions; and
(iii) any offer to purchase, tender offer, exchange offer or any similar
transaction or series of related transactions made by any person involving more
than 10% of the outstanding shares of the capital stock of the Company.

               (b) Until the Closing Date, each Shareholder shall not, directly
or indirectly, (i) solicit, initiate or knowingly encourage or induce the making
of any Acquisition Proposal, (ii) furnish information regarding the Company or
any of its subsidiaries in connection with an Acquisition Proposal or potential
Acquisition Proposal, (iii) negotiate or engage in discussions with any third
party with respect to any Acquisition Proposal, (iv) approve, endorse or
recommend any 


                                       16


<PAGE>   17


Acquisition Proposal or (v) enter into any letter of intent, contract or other
instrument related directly or indirectly to any Acquisition Proposal or
contracts with advisors or consultants.

               (c) The Company or, as applicable, Shareholder, shall promptly
advise ADAC orally and in writing of the receipt of any Acquisition Proposal or
any inquiry relating to an Acquisition Proposal prior to the Effective Time.

               (d) The Company shall immediately cease and cause to be
terminated any discussions or negotiations with any parties existing as of the
date of this Agreement and that relate to any Acquisition Proposal, and the
Company shall immediately demand the return of all financial and other
information furnished to such parties.

        4.4 REGISTRATION STATEMENTS. No later than March 31, 1997, ADAC shall
prepare and cause to be filed with the SEC a Registration Statement on Form S-3
to register 50% of the ADAC Common Stock to be issued in connection with the
Merger, and no later than December 13, 1997, ADAC shall prepare and cause to be
filed with the SEC a Registration Statement on Form S-3 to register the
remaining 50% of the ADAC Common Stock to be issued in connection with the
Merger. ADAC shall use its best efforts to cause such registration statements to
become effective as soon as practicable after the filing thereof.
Notwithstanding the foregoing, if at any time after March 31, 1997 (i) the fair
market value of ADAC Common Stock, determined by reference to the closing price
of such stock on the Nasdaq Stock Market, drops below $15.00, or (ii) Sub give
Shareholder notice of the termination of Shareholder's consulting agreement with
Sub pursuant to Section 7(d) thereof, Shareholder shall have the right to demand
that ADAC register, as soon as practicable, on Form S-3 the remaining
unregistered shares of ADAC Common Stock held by Shareholder. Shareholder may
exercise such demand right by giving written notice to ADAC no later than ten
business days following the date of the occurrence of such event.

        4.5 REGULATORY APPROVALS.

               (a) The Company and ADAC shall use all reasonable efforts to file
as soon as practicable after the date of this Agreement all notices, reports and
other documents required by law to be filed with any Governmental Authority with
respect to the Merger and the other Transactions and to submit promptly any
additional information requested by any such Governmental Authority.

               (b) The Company and ADAC shall (i) give each other prompt notice
of the commencement of any Proceeding by or before any court or Governmental
Authority with respect to the Merger or any of the other Transactions, (ii) keep
each other informed as to the status of any such Proceeding and (iii) except as
may be prohibited by any Governmental Authority or by any law or court order or
decree, permit the other party to be present at each meeting or conference
relating to any such Proceeding and to have access to and be consulted in
connection with any document filed or provided to any Governmental Authority in
connection with any such Proceeding.

        4.6 ADDITIONAL AGREEMENTS. The Company and Shareholder agree to use
their best efforts to take, or cause to be taken, all actions necessary to
consummate the Merger and make 


                                       17


<PAGE>   18


effective the other Transactions. Without limiting the generality of the
foregoing, the Company shall use all commercially reasonable efforts to (i)
obtain the consent and approval of each Governmental Authority, lessor or other
person whose consent or approval is required (by virtue of any contractual
provision or legal requirement or otherwise) in order to permit the consummation
of the Merger or any of the other Transactions or in order to enable ADAC as the
Surviving Corporation to conduct its business in the manner in which such
business is currently being conducted or is proposed to be conducted, (ii)
effect all registrations and filings necessary to consummate the Merger and
(iii) lift any restraint, injunction or other legal bar to the Merger.

        4.7 DISCLOSURE. Except as otherwise required by law, no announcement
shall be made regarding this Agreement or the Merger (a) by either the Company
or Shareholder without the prior written consent of ADAC or (b) by ADAC without
the prior written consent of the Company, which consents shall not be
unreasonably withheld.

        4.8 CONSULTING AGREEMENT. Shareholder shall execute and deliver to ADAC,
on or prior to the Closing Date, a Consulting Agreement in the form attached
hereto as Exhibit A.

        4.9 AFFILIATE AND INVESTMENT REPRESENTATION AGREEMENT. Shareholder shall
execute and deliver to ADAC, on or prior to the Closing Date, an Affiliate and
Investment Representation Agreement in the form attached hereto as Exhibit B.

        4.10 CONTINUITY OF INTEREST CERTIFICATE. Shareholder shall execute and
deliver to ADAC a Continuity of Interest Certificate in the form attached hereto
as Exhibit C.

        4.11 TAX CERTIFICATES. The Company shall deliver to ADAC's counsel a tax
certificate substantially in the form attached hereto as Exhibit D (the "Company
Tax Certificate"). ADAC shall deliver to the Company's counsel a tax certificate
substantially in the form attached hereto as Exhibit E (the "ADAC Tax
Certificate").

        4.12 TAX RETURNS. The Company shall timely file all federal and state
income tax returns for taxable periods ending on or prior to the Effective Time
and has paid or will pay all Taxes attributable to such periods. Such returns
will be prepared and filed in accordance with applicable law and in a manner
consistent with past practices and shall be subject to review and approval by
ADAC. After the Effective Time, ADAC and Shareholder will make available to the
other, as reasonably requested, all information, records or documents relating
to liability for Taxes for all periods prior to or including the Effective Time
and will preserve such information, records or documents until the expiration of
any applicable statutes of limitations.


                                       18


<PAGE>   19



                                       5

                   CONDITIONS PRECEDENT TO OBLIGATIONS OF ADAC

        The obligations of ADAC to effect the Merger and to otherwise consummate
the transactions contemplated hereby are subject to the fulfillment at or prior
to the Closing of each of the following conditions:

        5.1 REPRESENTATIONS AND WARRANTIES ACCURATE.

               (a) The representations and warranties of the Company contained
in this Agreement shall have been accurate in all respects as of the date of
this Agreement.

               (b) The representations and warranties of the Company contained
in this Agreement shall be accurate in all respects as of the Closing Date as if
made on and as of the Closing Date.

        5.2 COMPLIANCE WITH COVENANTS. The Company and the Shareholder shall
have complied with and performed in all material respects each covenant
contained in this Agreement that is required to be performed by the Company and
the Shareholder, respectively, on or prior to the Closing Date.

        5.3 NO MATERIAL ADVERSE EFFECT. Since the date of this Agreement, there
shall not have been any material adverse effect on the Company and there shall
not have occurred any change or development, or any combination of changes or
developments, that would reasonably be expected to have a material adverse
effect on the Company.

        5.4 CERTIFICATE. The Company shall have delivered to ADAC a certificate
of the Chief Executive Officer of the Company evidencing compliance with the
conditions set forth in Sections 5.1, 5.2 and 5.3.

        5.5 PRE-ACQUISITION REVIEW. ADAC shall have completed its
pre-acquisition review of the Company and its business and shall be satisfied,
in its sole discretion, with the results of such review.

        5.6 GOVERNMENTAL CONSENTS AND APPROVALS. ADAC and the Company shall have
received all approvals, licenses, consents, assignments and authorizations of
Governmental Authorities as may be required to permit the performance by ADAC
and the Company of their respective obligations under this Agreement and the
consummation of the Merger and the other Transactions.

        5.7 CONSENT OF LENDERS. ADAC and the Company shall have received any
applicable consents of lenders.


                                       19


<PAGE>   20


        5.8 BOARD OF DIRECTORS APPROVAL. The Board of Directors of ADAC shall
have approved this Agreement, the Merger and the Related Transactions.

        5.9 EXEMPT TRANSACTION. The issuance of the ADAC Common Stock in
connection with the Merger shall be exempt from the registration requirements of
the Securities Act of 1933, as amended.

        5.10 CONSULTING AGREEMENT. Shareholder shall have executed and delivered
to ADAC a Consulting Agreement in the form of Exhibit A.

        5.11 AFFILIATE AND INVESTMENT REPRESENTATION AGREEMENT. Shareholder
shall have executed and delivered to ADAC an Affiliate and Investment
Representation Agreement in the form of Exhibit B.

        5.12 NONDISCLOSURE AND INVENTIONS AGREEMENT. Each Employee and
independent contractor of the Company requested by ADAC shall have executed and
delivered to ADAC a Nondisclosure and Inventions Agreement in the form of
Exhibit F.

        5.13 ABSENCE OF RESTRAINT. No order to restrain, enjoin or otherwise
prevent the consummation of the Merger or any of the other Transactions shall
have been entered by any court or Governmental Authority.

        5.14 NO LITIGATION. There shall not be pending or threatened any
Proceeding which, in the reasonable opinion of ADAC, could have a material
adverse effect on the Company, ADAC or the Surviving Corporation.

        5.15 CONTINUITY OF INTEREST CERTIFICATE. Shareholder shall have executed
and delivered to ADAC a Continuity of Interest Certificate in the form of
Exhibit C.

        5.16 LEGAL OPINION. ADAC shall have received an opinion of counsel to
the Company, dated the Closing Date, in substantially the form set forth on
Exhibit G.

        5.17 LEASE. ADAC and Shareholder shall have executed and delivered a
sublease on terms and conditions satisfactory to the parties for the leasehold
at 14350-48-46 SW 142 Avenue, Miami, Florida 33186, the prime lease shall have
been renewed for one year, amended to the satisfaction of ADAC and assigned by
PDT to Shareholder, and the Company shall have been released from the guarantee
provided to secure payments made under the lease.

        5.18 MOBILE UNIT GUARANTEE. The Company shall have been released from
all guarantees to repurchase any mobile units.

        5.19 TRANSITION AGREEMENT. Sub and TPC shall have entered into an
agreement in the form of Exhibit H hereto regarding the purchase of cameras by
TPC from Sub and certain other matters.


                                       20


<PAGE>   21


                                        6

       CONDITIONS PRECEDENT TO THE COMPANY'S AND SHAREHOLDER'S OBLIGATIONS

        The obligations of the Company and the Shareholder to effect the Merger
and otherwise consummate the transactions contemplated by this Agreement are
subject to the fulfillment, at or prior to the Closing, of the following
conditions:


        6.1 REPRESENTATIONS AND WARRANTIES ACCURATE.

               (a) The representations and warranties of ADAC contained in this
Agreement shall have been accurate in all material respects as of the date of
this Agreement.

               (b) The representations and warranties of ADAC contained in this
Agreement shall be accurate in all respects as of the Closing Date as if made on
and as of the Closing Date.

        6.2 COMPLIANCE WITH COVENANTS. ADAC shall have complied with and
performed in all material respects each covenant contained in this Agreement
that is required to be performed by ADAC on or prior to the Closing Date.

        6.3 CERTIFICATE. ADAC shall have delivered to the Company a certificate
of an executive officer of ADAC evidencing compliance with the conditions set
forth in Sections 6.1 and 6.2.

        6.4 LEGAL OPINION. The Company shall have received an opinion of counsel
to ADAC, dated the Closing Date, substantially to the effect of Exhibit H.

        6.5 ABSENCE OF RESTRAINT. No order to restrain, enjoin or otherwise
prevent the consummation of the Merger or any of the other Transactions shall
have been entered by any court or Governmental Authority.

        6.6 CONSULTING AGREEMENT. ADAC shall have executed and delivered to
Shareholder a Consulting Agreement in the form of Exhibit A.

        6.7 SBA LOAN. Sub or ADAC shall have assumed the SBA loan held by the
Company, and the SBA shall have released the lien it holds on Shareholder's home
with respect thereto.

        6.8 TRANSITION AGREEMENT. Sub and TPC shall have entered into an
agreement in the form of Exhibit I regarding the purchase of cameras by TPC from
Sub and certain other matters.


                                       21


<PAGE>   22


                                       7

                            TERMINATION OF AGREEMENT

        7.1    TERMINATION.

               (a) This Agreement may be terminated prior to the Effective Time:

                    (i) by mutual written consent of the respective Boards of
Directors of ADAC and the Company;

                    (ii) by either ADAC or the Company if the Merger shall not
have been consummated by March 31, 1997 (unless the failure to consummate the
Merger is attributable to a failure on the part of the party seeking to
terminate this Agreement to perform any material obligation required to be
performed by such party at or prior to the Effective Time);

                    (iii) by either ADAC or the Company if a court of competent
jurisdiction or Governmental Authority shall have issued a final and
nonappealable order, decree or ruling, or shall have taken any other action,
having the effect of permanently restraining, enjoining or otherwise prohibiting
the Merger;

               (b) This Agreement may be terminated prior to the Closing Date:

                    (i) by ADAC if any of the Company's representations and
warranties contained in this Agreement shall be or shall have become materially
inaccurate as of the date of this Agreement, or if any of the Company's
covenants contained in this Agreement shall have been breached in any material
respect; provided, however, that if an inaccuracy in the Company's
representations and warranties or a breach of a covenant by the Company is
curable by the Company, the Company shall have ten days to cure such breach; or

                    (ii) by the Company if any of ADAC's representations and
warranties contained in this Agreement shall be or shall have become materially
inaccurate as of the date of this Agreement, or if any of ADAC's covenants
contained in this Agreement shall have been breached in any material respect;
provided, however, that if an inaccuracy in ADAC's representations and
warranties or a breach of a covenant by ADAC is curable by ADAC, ADAC shall have
ten days to cure such breach.

        7.2 EFFECT OF TERMINATION. In the event of the termination of this
Agreement as provided in Section 7.1, this Agreement shall be of no further
force or effect; provided, however, that (i) Section 4.3, this Section 7.2,
Section 7.3 and Section 10.10 shall survive the termination of this Agreement
and shall remain in full force and effect and (ii) the termination of this
Agreement shall not relieve any party from any liability for any breach of this
Agreement.


                                       22


<PAGE>   23


        7.3 FEES AND EXPENSES. Each of ADAC and the Company shall bear its own
expenses in connection with the preparation, negotiation, execution and
performance of this Agreement, the Merger and the Transactions.


                                       8

                                    HOLDBACK

        8.1 HOLDBACK AMOUNT. On the Closing Date, ADAC shall withhold ten
percent (10%) of the ADAC Common Stock being delivered pursuant to Section
1.5(a)(ii) (the "Holdback Common Stock") and Shareholder shall deliver to ADAC
endorsed stock powers (the "Stock Powers") in blank for the Holdback Common
Stock. ADAC shall hold the Holdback Common Stock until the date specified in
Section 8.7 (the "Holdback Period").

        8.2 VOTING OF SHARES. During the Holdback Period, the record owners of
the shares of Holdback Common Stock shall be entitled to exercise all voting
rights with respect to such shares of Holdback Common Stock. Any cash,
securities or other property distributable (whether by way of dividend, stock
split or otherwise) in respect of or in exchange for any shares of Holdback
Common Stock held by ADAC shall not be distributed to the record owner of such
shares, but rather shall be held by ADAC. At the time any shares of Holdback
Common Stock are released by ADAC, any cash, securities or other property
previously distributed in respect of or in exchange for such shares shall be
released by ADAC to such person.

        8.3 TRANSFERABILITY; FRACTIONAL SHARES. The interests of the record
owners in the Holdback Common Stock shall not be assignable or transferable,
other than by operation of law. No transfer of any of such interests by
operation of law shall be recognized or given effect until ADAC shall have
received written notice of such transfer. No fractional shares of Holdback
Common Stock shall be retained in or released pursuant to this Article 8. In
connection with any release of shares of the Holdback Common Stock, ADAC shall
be permitted to "round down" or to follow such other rounding procedures as ADAC
reasonably determines to be appropriate in order to avoid retaining any
fractional share and in order to avoid releasing any fractional share.

        8.4 CLAIM NOTICE. If ADAC determines in good faith that (i) there has
been a possible breach by the Company of any representation, warranty, covenant
or other provision set forth in this Agreement or the certificate issued
pursuant to Section 5.3, (ii) there is a reasonable likelihood that any of the
matters disclosed in Section ____ of the Disclosure Schedule may result in any
liability, loss, cost or expense to ADAC, (iii) Sub has become liable for any
Taxes attributable to the period ending on or prior to the Closing Date, (iv)
Shareholder has failed to repay by April 30, 1997 any Liabilities outstanding as
of the Closing Date of Shareholder or any Shareholder affiliate or associate to
the Company, including the approximately $70,000 owed the Company by the Mobile
Business, or (v) there is any Proceeding relating to any inaccuracy, breach,
failure, liability or alleged liability, or damages of the type referred to in
the preceding clauses, and if ADAC wishes to make a claim against the Holdback
Common Stock with respect to such possible breach, then 


                                       23


<PAGE>   24


ADAC may deliver to Shareholder a certificate signed by one or more of its
officers (a "Claim Notice") setting forth the claim and the amount of the claim
(the "Claim Amount").

        8.5 RESPONSE NOTICE. Within thirty (30) days after the delivery of a
Claim Notice to Shareholder, Shareholder shall deliver to ADAC a written notice
(the "Response Notice") containing:

               (a) instructions to the effect that shares of Holdback Common
Stock having a Stipulated Value (as defined below) equal to the entire Claim
Amount set forth in such Claim Notice are to be released to ADAC; or

               (b) instructions to the effect that shares of Holdback Common
Stock having a Stipulated Value equal to a specified portion (but not the entire
amount) of the Claim Amount set forth in such Claim Notice are to be released to
ADAC, together with a statement that the remaining portion of such Claim Amount
is being disputed; or

               (c) a statement that the entire Claim Amount set forth in such
Claim Notice is being disputed.

If no Response Notice is received by ADAC from Shareholder within thirty (30)
days after the delivery of a Claim Notice to Shareholder, then Shareholder shall
be deemed to have given instructions that shares of Holdback Common Stock having
a Stipulated Value equal to the entire Claim Amount set forth in such Claim
Notice are to be released to ADAC.

        8.6 RELEASE OF SHARES TO ADAC.

               (a) If Shareholder gives (or is deemed to have given)
instructions that shares of Holdback Common Stock having a Stipulated Value
equal to the entire Claim Amount set forth in a Claim Notice are to be released
to ADAC, then ADAC shall be authorized to use the Stock Powers to transfer to
ADAC shares of Holdback Common Stock having a Stipulated Value equal to such
Claim Amount.

               (b) If a Response Notice delivered by Shareholder in response to
a Claim Notice contains instructions to the effect that shares of Holdback
Common Stock having a Stipulated Value equal to a specified portion (but not the
entire amount) of the Claim Amount set forth in such Claim Notice are to be
released to ADAC, then (i) ADAC shall be authorized to use the Stock Powers to
transfer to ADAC shares of Holdback Common Stock having a Stipulated Value equal
to such specified portion of such Claim Amount, and (ii) the procedures set
forth in Section 8.6(c) shall be followed with respect to the remaining portion
of such Claim Amount.

               (c) If a Response Notice delivered by Shareholder in response to
a Claim Notice contains a statement that all or a portion of the Claim Amount
set forth in such Claim Notice is being disputed (such Claim Amount or the
disputed portion thereof being referred to as the "Disputed Amount"), then,
notwithstanding anything contained in Section 8.7, ADAC shall continue to hold
(in addition to any other shares of Holdback Common Stock permitted to be


                                       24


<PAGE>   25


retained, whether in connection with any other dispute, or otherwise) shares of
Holdback Common Stock having a Stipulated Value equal to One Hundred Twenty-Five
percent (125%) of the Disputed Amount. Such shares of Holdback Common Stock
shall continue to be held until such time as (i) ADAC or Shareholder execute a
settlement agreement containing instructions regarding the release of such
shares, or (ii) ADAC receives a copy of a court order containing instructions to
ADAC regarding the release of such shares. ADAC shall thereupon release such
shares of Holdback Common Stock in accordance with the instructions set forth in
such settlement agreement or court order. (The parties acknowledge that it is
appropriate to retain more than One Hundred percent (100%) of the Claim Amount
in recognition of the fact that ADAC may have underestimated the aggregate
amount of the actual and potential damages arising from a particular breach.)
For purposes of this Article 8, the "Stipulated Value" of each of the shares of
Holdback Common Stock held shall be deemed to be equal to the Closing Price.

               (d) Any release of Holdback Common Stock to ADAC shall be an
adjustment in and reduction of the consideration due the Shareholder as set
forth in Section 1.5(a)(ii).

        8.7 RELEASE OF SHARES TO SHAREHOLDER. On the date which is Three Hundred
Sixty-Five (365) days after the Closing Date, ADAC shall release to Shareholder
all shares of Holdback Common Stock then held by ADAC, except for any shares of
Holdback Common Stock that are to be retained by ADAC pursuant to Section
8.6(c).

        8.8 SURVIVAL OF REPRESENTATIONS AND WARRANTIES. The representations and
warranties made by the Company and Shareholder in this Agreement and the other
agreements and instruments delivered by them pursuant hereto shall survive the
Closing and shall expire on the earlier of the date that is the date of the
auditor's report for the first audit of ADAC as of a date after the Closing Date
or the date that is one year following the Closing Date (the "Expiration Date");
provided however that if at any time prior to the Expiration Date, ADAC deliver
to Shareholder a Claim Notice then the claim asserted in such notice shall
survive the Expiration Date until such time as such claim is fully and finally
resolved. All representations and warranties of ADAC and Sub shall terminate and
expire as of the Effective Time, and any liability of ADAC and Sub with respect
to such representations and warranties shall thereupon cease.


                                        9

                                  MISCELLANEOUS

        9.1 NON-COMPETE. Shareholder hereby agrees that during the period
commencing upon the Closing Date and ending two years after the Closing Date,
without the prior written consent of ADAC, such Shareholder shall not, within
any state in the United States, either as an individual or as an employee,
agent, consultant, advisor, independent contractor, general partner, officer,
director, shareholder or investor of any person: (i) participate or engage in
the design, development, manufacture, production, marketing, sale or servicing
of any product, or the provision of any service, that directly or indirectly
competes with any product or service designed, developed, manufactured,
produced, marketed, sold or provided by the Company prior to the Effective Time
or 


                                       25


<PAGE>   26


by ADAC prior to or after the Effective Time; (ii) solicit or attempt to solicit
any person who at the time of such inducement is an employee of ADAC to perform
work or services for any other person; or (iii) permit the name of such
Shareholder to be used in connection with any competitive business.

        9.2 AMENDMENT. This Agreement may be amended with the approval of the
respective Boards of Directors of the Company and ADAC at any time; provided,
however, that no amendment shall be made which would have a material adverse
effect on the Shareholder without the further approval of such Shareholder. This
Agreement may not be amended except by an instrument in writing signed on behalf
of each of the parties hereto.

        9.3 WAIVER.

               (a) No failure on the part of any party to exercise any power,
right, privilege or remedy under this Agreement, and no delay on the part of any
party in exercising any power, right, privilege or remedy under this Agreement,
shall operate as a waiver of such power, right, privilege or remedy; and no
single or partial exercise of any such power, right, privilege or remedy shall
preclude any other or further exercise thereof or of any other power, right,
privilege or remedy.

               (b) No party shall be deemed to have waived any claim arising out
of this Agreement, or any power, right, privilege or remedy under this
Agreement, unless the waiver of such claim, power, right, privilege or remedy is
expressly set forth in a written instrument duly executed and delivered on
behalf of such party; and any such waiver shall not be applicable or have any
effect except in the specific instance in which it is given.

        9.4 SEVERABILITY. In the event that any provision of this Agreement or
the application thereof, becomes or is declared by a court of competent
jurisdiction to be illegal, void, or unenforceable, the remainder of this
Agreement will continue in full force and effect and the application of such
provision to other persons or circumstances will be interpreted so as reasonably
to effect the intent of the parties hereto. The parties further agree to replace
such void or unenforceable provision of this Agreement with a valid and
enforceable provision that will achieve, to the extent possible, the economic,
business an other purposes of such void or unenforceable provision.

        9.5 ENTIRE AGREEMENT; COUNTERPARTS; APPLICABLE LAW. This Agreement and
the other agreements referred to herein constitute the entire agreement and
supersede all prior agreements and understandings, both written and oral, among
or between any of the parties with respect to the subject matter hereof. This
Agreement may be executed in several counterparts, each of which shall be deemed
an original and all of which shall constitute one and the same instrument, and
shall be governed in all respects by the laws of the State of California as
applied to contracts entered into and to be performed entirely within
California.

        9.6 ASSIGNABILITY. This Agreement shall be binding upon, and shall be
enforceable by and inure solely to the benefit of, the parties hereto and their
respective successors; provided, however, that this Agreement may not be
assigned by any party without the prior written consent of 


                                       26


<PAGE>   27


the other parties, and any attempted assignment without such consent shall be
void and of no effect. Nothing in this Agreement, express or implied, is
intended to or shall confer upon any third person any right, benefit or remedy
of any nature whatsoever under or by reason of this Agreement.

        9.7 NOTICES. All notices and other communications pursuant to this
Agreement shall be in writing and shall be deemed given if delivered personally,
telecopied, sent by nationally-recognized, overnight courier or mailed by
registered or certified mail (return receipt requested), postage prepaid, to the
parties at the following addresses (or at such other address for a party as
shall be specified by like notice):

        If to ADAC,
        to:                        ADAC Laboratories
                                   540 Alder Drive
                                   Milpitas, California  95035
                                   Attention:  Ken Bayer with a copy to
                                               Karen L.  Masterson

        If to the Company,
        to:                        Photon Diagnostic Technologies, Inc.
                                   143505 S.W. 142nd Avenue
                                   Miami, FL  33186
                                   Attention: Sergio F. Cabrera

        with a copy to:            Ralph Rocheteau & Associates
                                   c/o Techniport
                                   5757 NW 11th Street, Suite 160
                                   Miami, FL  33126

All such notices and other communications shall be deemed to have been received
(a) in the case of personal delivery, on the date of such delivery, (b) in the
case of a telecopy, when the party receiving such telecopy shall have confirmed
receipt of the communication, (c) in the case of delivery by
nationally-recognized, overnight courier, on the Business Day following dispatch
and (d) in the case of mailing, on the fifth Business Day following such
mailing.

        9.8 COOPERATION. Each of the Company and ADAC agrees to cooperate fully
with the other and to execute and deliver such further documents, certificates,
agreements and instruments and to take such other actions as may be reasonably
requested by the other to evidence or reflect the Transactions and to carry out
the intent and purposes of this Agreement.

        9.9 CONFIDENTIALITY. The parties hereby agree that all information about
the other's business obtained by them pursuant to this Agreement or the letter
agreement dated October 28, 1996, shall be deemed confidential and shall not be
disclosed to any other party except as contemplated hereby and such information
will not be used for any purpose except evaluating the desirability of the
Merger. The foregoing shall not apply however to information (i) known to a
party prior to such disclosure to such party, (ii) information that become
generally available to the 


                                       27


<PAGE>   28


public or to a party without confidentiality restrictions after the date hereof,
and (iii) required to be disclosed by law or court order.

        9.10 CERTAIN TERMS. As used in this Agreement:

               (a) the word "person" refers to any (i) individual, (ii)
corporation, partnership, company or other entity, or (iii) Governmental
Authority; and

               (b) the words "include" and "including," and variations thereof,
shall not be deemed to be terms of limitation, but rather shall be deemed to be
followed by the words "without limitation."

        9.11 TITLES. The titles and captions of the Articles and Sections of
this Agreement are included for convenience of reference only and shall have no
effect on the construction or meaning of this Agreement.

        9.12 ARTICLES, SECTIONS AND EXHIBITS. Except as otherwise indicated, all
references in this Agreement to "Articles," "Sections" and "Exhibits" are
intended to refer to Articles and Sections of this Agreement and Exhibits to
this Agreement.

        IN WITNESS WHEREOF, the parties hereby have executed this Agreement and
Plan of Reorganization as of the date first above written.

                                  "ADAC"

                                  ADAC LABORATORIES,
                                  a California corporation


                                  By:
                                      ----------------------------------

                                      ----------------------------------
                                        [Print name and title]


                                  THE "SUB"

                                  J.D. TECHNICAL SERVICES, INC.
                                  a Delaware corporation


                                  By:

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

                                      ----------------------------------
                                        [Print name and title]


                                       28


<PAGE>   29


                                  THE "COMPANY"

                                  PHOTON DIAGNOSTIC TECHNOLOGIES, INC.,
                                  a Florida corporation


                                  By:
                                      ----------------------------------

                                      ----------------------------------
                                        [Print name and title]


                                  THE "SHAREHOLDER"

                                  ----------------------------------
                                  Sergio F. Cabrera


                                       29




<PAGE>   1

                                                                     Exhibit 4.1


THIS WARRANT HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933. NO SALE
OR DISPOSITION MAY BE EFFECTED WITHOUT AN EFFECTIVE REGISTRATION STATEMENT
RELATED THERETO OR AN OPINION OF COUNSEL FOR THE HOLDER, SATISFACTORY TO THE
COMPANY, THAT SUCH REGISTRATION IS NOT REQUIRED UNDER THE ACT OR RECEIPT OF A
NO-ACTION LETTER FROM THE SECURITIES AND EXCHANGE COMMISSION.

                                                         Void after July 1, 1999

                                ADAC LABORATORIES
                   WARRANT TO PURCHASE SHARES OF COMMON STOCK



        THIS CERTIFIES THAT, for value received, Bain & Company, Inc. is
entitled to subscribe for and purchase shares of the fully paid and non
assessable Common Stock, $.01 par value, of ADAC LABORATORIES, subject to the
provisions and upon the terms and conditions hereinafter set forth.

1.      Definitions

        For the purposes of this Warrant, the following terms shall have the
following meanings:

               (a) Act. "Act" means the Securities Act of 1933, as amended.

               (b) Common Stock. "Common Stock" means the fully paid and
               nonassessable Common Stock, $.01 par value, of the Company.

               (c) Company. "Company" means ADAC Laboratories, a California
               corporation.

               (d) Date of Agreement. "Date of Agreement" means July 1, 1994.

               (e) Date of Grant. "Date of Grant" means August 11, 1994.

               (f) Shares. "Shares" means up to 60,000 shares of Common Stock,
               which amount is subject to adjustment pursuant to Section 5
               hereof.

               (g) Value at Exercise. "Value at Exercise" means the weighted (by
               trading volume) average closing market price of the Company's
               Common Stock on the NASDAQ (or, if the Common Stock should cease
               to be traded thereon, on such other exchange or public trading
               market on which the Common Stock may then become traded) over the
               twenty (20) trading days immediately preceding the date which is
               two trading days prior to the date this Warrant is surrendered.


                                       1


<PAGE>   2


               (h) Warrant. "Warrant" means this Warrant which entitles Bain &
               Company, Inc., subject to the provisions and upon the terms and
               conditions set forth herein, to purchase shares of Common Stock.

               (i) Warrant Price. "Warrant Price" means initially a price of
               $6.50 (six dollars, fifty cents) per share of Common Stock, which
               price is subject to adjustment pursuant to Section 5 hereof.

2.      Conditions to Exercise.

               (a) Vesting. Subject to subsection 2(b) below, the purchase right
               represented by this Warrant shall be exercisable, cumulatively,
               as to the number of Shares subject to the Warrant shown below at
               any time during the term of this Warrant.


<TABLE>
<CAPTION>
                                    NUMBER OF SHARES             CUMULATIVE NUMBER
        VESTING DATE                BECOMING EXERCISABLE         OF SHARES EXERCISABLE
        ------------                --------------------         ---------------------
       <S>                                 <C>                         <C>  
        August 11, 1994                     3,100                        3,100
        September 1, 1994                   7,700                       10,800
        October 1, 1994                     7,700                       18,500
        November 1, 1994                    7,700                       26,200
        December 1, 1994                    7,700                       33,900
        January 1, 1995                     7,700                       41,600
        February 1, 1995                    7,700                       49,300
        March 1, 1995                       3,100(7,700) - See 2(c)     52,400/57,000
        April 1, 1995                       3,000                       55,400/60,000
</TABLE>


               (b) Continued Consulting. In the event that Bain & Company, Inc.
               shall cease to serve as a consultant of the Company for any
               reason, the Warrant shall be exercisable only as to those shares
               which had vested (as noted in subsection 2(a) by the date that
               the Company gives Bain & Company, Inc. notice of its termination
               as a consultant to the Company or the date that Bain & Company,
               Inc. gives the Company notice that it is ceasing to serve as a
               consultant to the Company, whichever is earlier. The vesting of
               this Warrant is earned by Bain & Company, Inc.'s continued
               service as a consultant. This Warrant does not constitute an
               express or implied promise of a continued consulting relationship
               for the vesting period or any other period.

                      If Bain & Company, Inc. temporarily ceases to serve as
               Consultant to the Company, then the vesting shall end as of the
               date services cease and shall resume when services are
               re-engaged, but in no event later than the expiration date of the
               Warrant.


                                       2


<PAGE>   3


               (c) Vested shares for March will total 3,100 unless the resource
               level of September through February, 1995, is maintained for an
               additional month in which case 7,700 shares will vest. Resource
               level will be jointly agreed upon by Bain & Company and ADAC
               Laboratories.

3.      Method of Exercise; Payment; Issuance of New Warrant

        The holder hereof shall have the option to exercise this Warrant
pursuant to the method set out in either Section 3(a) or 3(b) below.

               (a) Standard Method. This Warrant may be exercised by the holder
               hereof, in whole or in part, by the surrender of this Warrant at
               the principal office of the Company and by the payment to the
               Company, in cash or by certified or cashier's check, of an amount
               equal to the then applicable Warrant Price per share multiplied
               by the number of shares then being purchased.

               (b) Net Issuance Method. This Warrant may be exercised by the
               holder hereof, in whole or in part, by the surrender of this
               Warrant at the principal office of the Company. Upon such
               surrender, the holder of this Warrant is entitled to receive such
               number of fully paid and non assessable shares of the Company's
               Common stock as equals the product of (x) and (y) below, where
               (x) equals the quotient of (i) the Value at Exercise less the
               then applicable Warrant Price divided by (ii) the Value at
               Exercise and (y) equals the number of Shares for which this
               Warrant is being exercised. If the result of the foregoing
               calculation results in a number equal to or less than zero, no
               shares shall be delivered upon surrender of this Warrant.

               (c) Issuance of New Warrant. In the event of any exercise of the
               rights represented by this Warrant, certificates for the shares
               of Common Stock issuable upon such exercise shall be delivered to
               the holder hereof within a reasonable time and, unless this
               Warrant has been fully exercised or expired, a new Warrant
               representing the portion of the Shares, if any, with respect to
               which this Warrant shall not then have been exercised shall also
               be issued to the holder hereof within such reasonable time. The
               holder hereof shall pay all transfer taxes, if any, arising from
               the exercise of this Warrant, and shall pay to the Company
               amounts necessary to satisfy any applicable federal, state and
               local withholding requirements.

4.      Stock Fully Paid; Reservation of Shares

               All shares of Common Stock which may be issued upon the exercise
        of the rights represented by this Warrant will, upon issuance, be fully
        paid and non assessable. During the period within which the rights
        represented by this Warrant may be exercised, the Company will, at all
        times have authorized and reserved a sufficient number of shares of its
        Common Stock to provide for the exercise of the rights represented by
        this Warrant.


                                       3


<PAGE>   4


5.      Adjustment of Purchase Price and Number of Shares.

               The number of securities purchasable upon the exercise of this
        Warrant and the Warrant Price shall be subject to adjustment from time
        to time upon the occurrence of certain events, as follows:

               (a) Subdivision or Combination of Shares. If the Company at any
               time while this Warrant remains outstanding and unexpired shall
               subdivide or combine its Common Stock, the Warrant Price shall be
               proportionately decreased in the case of a subdivision or
               increased in the case of a combination.

               (b) In the case of any reclassification or similar change of
               outstanding shares of Common Stock, or in case of any
               consolidation of the Company with or merger of the Company into
               another corporation (other than a merger whose sole purpose is to
               change the state of incorporation of the Company or a
               consolidation or merger in which the Company is the continuing
               corporation and which does not result in any reclassification or
               change of outstanding shares of Common Stock), or in case of any
               sale or conveyance to another corporation of the property of the
               Company as an entirety or substantially as an entirety, the
               holder hereof shall have the right thereafter without payment of
               additional consideration, upon exercise of its rights hereunder,
               to receive the kind and amount of shares of stock and other
               securities and property that the holder hereof would have
               received, upon such reclassification, change, consolidation,
               merger, sale or conveyance, with respect to the number of shares
               of Common Stock issuable upon such exercise, if such exercise had
               occurred immediately prior to such reclassification, change,
               consolidation, merger, sale or conveyance. Alternatively, the
               Board of Directors of the Company may, in its sole discretion,
               provide a 30-day period immediately prior to such event in which
               the holder shall have the right to exercise the Warrant in whole
               or in part without regard to limitations on vesting. It shall be
               a condition of the effectiveness of any such transaction that one
               of the foregoing provisions of the benefit of this Warrant shall
               be lawfully and adequately provided for.

               (c) Stock Dividends. If the Company at any time while this
               Warrant is outstanding and unexpired shall pay a dividend with
               respect to Common Stock payable in Common Stock, then the Warrant
               Price shall be adjusted, from and after the date of determination
               of stockholders entitled to receive such dividend, to that price
               determined by multiplying the Warrant Price in effect immediately
               prior to such date of determination by a fraction (i) the
               numerator of which shall be the total number of shares of Common
               Stock outstanding immediately prior to such dividend, and (ii)
               the denominator of which shall be the total number of shares of
               Common Stock outstanding immediately after such dividend.


                                       4


<PAGE>   5


               (d) Adjustment of Number of Shares. Upon each adjustment in the
               Warrant Price, the number of Shares shall be adjusted, to the
               nearest whole share, to the product obtained by multiplying the
               number of Shares immediately prior to such adjustment in the
               Warrant Price by a fraction, the numerator of which shall be the
               Warrant Price immediately prior to such adjustment and the
               denominator of which shall be the Warrant Price immediately
               thereafter.

6.      Notice of Adjustments.

               Whenever any Warrant Price shall be adjusted pursuant to Section
        5 hereof, the Company shall make a certificate signed by its chief
        financial officer setting forth, in reasonable detail, the event
        requiring the adjustment, the amount of the adjustment, the method by
        which such adjustment was calculated, and the Warrant Price after giving
        effect to such adjustment, and shall cause copies of such certificate to
        be mailed (by first class mail, postage prepaid) to the holder of this
        Warrant.

7.      Fractional Shares.

               No fractional shares of Common Stock will be issued in connection
        with any exercise hereunder, but in lieu of such fractional shares the
        Company shall make a cash payment therefor upon the basis of the Value
        at Exercise then in effect.

8.      Compliance with Securities Act; Non-transferability of Warrant;
        Disposition of Shares of Common Stock.

              (a) Compliance with Securities Act. The holder of this Warrant, by
              acceptance hereof, agrees that this Warrant and the shares of
              Common Stock to be issued upon exercise hereof are being acquired
              for investment and that such holder will not offer, sell or
              otherwise dispose of this Warrant or any shares of Common Stock to
              be issued upon exercise hereof except under circumstances which
              will not result in a violation of the Act. Upon exercise of this
              Warrant, the holder hereof shall if requested by the Company,
              confirm in writing, in a form satisfactory to the Company, that
              the shares of Common Stock so issued are being acquired for
              investment and not with a view toward distribution or resale, that
              the holder is an "accredited investor", as that term is defined in
              Section 2(15) of the Act, and that the holder has received such
              information concerning the Company and has had an opportunity to
              make inquiry as to the Company so as to allow the holder to make
              an informed investment decision to exercise this Warrant. This
              Warrant and all shares of Common Stock issued upon exercise of
              this Warrant (unless registered under the Act) shall be stamped or
              imprinted with a legend in substantially the following form:

               "THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT
               OF 1933. NO SALE OR DISPOSITION MAY BE EFFECTED WITHOUT THE PRIOR
               WRITTEN CONSENT OF THE COMPANY AND WITHOUT AN EFFECTIVE
               REGISTRATION 


                                       5


<PAGE>   6


               STATEMENT RELATED THERETO OR AN OPINION OF COUNSEL FOR THE
               HOLDER, SATISFACTORY TO THE COMPANY, THAT SUCH REGISTRATION IS
               NOT REQUIRED UNDER THE ACT OR RECEIPT OF A NO-ACTION LETTER
               FROM THE SECURITIES AND EXCHANGE COMMISSION."

               (b) Transferability of Warrant. This Warrant may not be sold,
               transferred or assigned without the prior written consent of the
               Company and, if required, any governmental authority.

               (c) Disposition of Shares of Common Stock. With respect to any
               offer, sale or other disposition of any shares of Common stock
               acquired pursuant to the exercise of this Warrant prior to
               registration of such shares, the holder hereof and each
               subsequent holder of this Warrant agrees to give written notice
               to the Company prior thereto, describing briefly the manner
               thereof, together with a written opinion of such holder's
               counsel, if requested by the Company, to the effect that such
               offer, sale or other disposition may be effected without
               registration or qualification (under the Act as then in effect or
               any federal or state law than in effect) of such shares of Common
               Stock and indicating whether or not under the Act certificates
               for such shares of Common Stock to be sold or otherwise disposed
               of require any restrictive legend as to applicable restrictions
               on transferability in order to insure compliance with the Act.
               Promptly upon receiving such written notice and reasonably
               satisfactory opinion, if so requested, the Company shall notify
               such holder that such holder may sell or otherwise dispose of
               such shares of Common Stock in accordance with the terms of the
               notice delivered to the Company. If the opinion of counsel for
               the holder is not reasonably satisfactory to the Company, the
               Company shall promptly notify the holder.

                      Notwithstanding the foregoing paragraph, such shares of
               Common Stock may be offered, sold or otherwise disposed of in
               accordance with Rule 144 under the Act, provided that the Company
               shall have been furnished with such information as the Company
               may request to provide a reasonable assurance that the provisions
               of Rule 144 have been satisfied.

                      Each certificate representing the shares of Common Stock
               thus transferred (except a transfer pursuant to Rule 144) shall
               bear a legend as to the applicable restrictions on
               transferability in order to insure compliance with the Act,
               unless in the aforesaid opinion of counsel for the holder, such
               legend is not required in order to insure compliance with the
               Act. The Company may issue stop transfer instructions to its
               transfer agent in connection with such restrictions.

9.      No Rights of Stockholders.

        No holder of this Warrant shall be entitled to vote or receive dividends
or be deemed the holder of Common Stock, nor shall anything contained herein be
construed to confer 


                                       6


<PAGE>   7


upon the holder of this Warrant, as such, any of the rights of a stockholder of
the Company or any right to vote for the election of directors or upon any
matter submitted to stockholders at any meeting thereof, or to give or withhold
consent to any corporate action (whether upon any recapitalization, issuance of
stock, reclassification of stock, change of par value or change of stock to no
par value, consolidation, merger, conveyance, or otherwise) or to receive notice
of meetings, or to receive dividends or subscription rights or otherwise.

10.     Expiration of Warrant.

        This Warrant shall expire and shall no longer be exercisable upon the
occurrence of 5:00 p.m., Pacific Standard Time, on July 1, 1999.


                              ADAC LABORATORIES



                              By:
                                 -------------------------------------------  
                                 Robert A. Starr
                                 Assistant Corporate Secretary


Date of Grant:  August 11, 1994


                                       7


<PAGE>   8


THIS WARRANT HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 OR UNDER
ANY STATE SECURITIES LAW. NO SALE OR DISPOSITION MAY BE EFFECTED WITHOUT AN
EFFECTIVE REGISTRATION STATEMENT RELATED THERETO OR AN OPINION OF COUNSEL FOR
THE HOLDER, SATISFACTORY TO THE COMPANY, THAT SUCH REGISTRATION IS NOT REQUIRED.

                                                        Void after July 17, 2000

                                ADAC LABORATORIES
                   WARRANT TO PURCHASE SHARES OF COMMON STOCK



        THIS CERTIFIES THAT, for value received, Bain & Company, Inc. is
entitled to subscribe for and purchase shares of the fully paid and non
assessable Common Stock, $.01 par value per share, of ADAC LABORATORIES, subject
to the provisions and upon the terms and conditions hereinafter set forth.

1.      Definitions

        For the purposes of this Warrant, the following terms shall have the
following meanings:

               (a) Act. "Act" means the Securities Act of 1933, as amended.

               (b) Common Stock. "Common Stock" means the fully paid and
               nonassessable Common Stock, $.01 par value, of the Company.

               (c) Company. "Company" means ADAC Laboratories, a California
               corporation.

               (d) Date of Agreement. "Date of Agreement" means July 17, 1995.

               (e) Date of Grant. "Date of Grant" means July 17, 1995.

               (f) Shares. Shares means up to 60,000 shares of Common Stock,
               which amount is subject to adjustment pursuant to Section 5
               hereof.

               (g) Value at Exercise. "Value at Exercise" means the closing
               market price of the Company's Common Stock on the Nasdaq Stock
               Market (or, if the Common Stock should cease to be traded
               thereon, on such other exchange or public trading market on which
               the Common Stock may then become traded) on the date this Warrant
               is surrendered.


                                       1


<PAGE>   9


               (h) Warrant. "Warrant" means this Warrant which entitles Bain &
               Company, Inc., subject to the provisions and upon the terms and
               conditions set forth herein, to purchase shares of Common Stock.

               (i) Warrant Price. "Warrant Price" means initially a price of
               $11.875 per share of Common Stock, which price is subject to
               adjustment pursuant to Section 5 hereof.

2.      Conditions to Exercise.

        (a) Vesting. Subject to subsection 2(b) below, the purchase right
        represented by this Warrant shall be exercisable, cumulatively, as to
        the number of Shares subject to the Warrant shown below at any time
        during the term of this Warrant.


<TABLE>
<CAPTION>
                                    NUMBER OF SHARES             CUMULATIVE NUMBER
        VESTING DATE                BECOMING EXERCISABLE         OF SHARES EXERCISABLE
        ------------                --------------------         ---------------------

        <S>                                <C>                          <C>  
        August 17, 1995                     6,000                        6,000
        September 17, 1995                  6,000                       12,000
        October 17, 1995                    6,000                       18,000
        November 17, 1995                   6,000                       24,000
        December 17, 1995                   6,000                       30,000
        January 17, 1996                    6,000                       36,000
        February 17, 1996                   6,000                       42,000
        March 17, 1996                      6,000                        48,000
        April 17, 1996                      6,000                       54,000
        May 17, 1996                        6,000                       60,000
</TABLE>


        (b) Continued Consulting. In the event that Bain & Company, Inc. shall
        cease to serve as a consultant of the Company for any reason, the
        Warrant shall be exercisable only as to those shares which had vested
        (as noted in subsection 2(a) by the date that the Company gives Bain &
        Company, Inc. notice of its termination as a consultant to the Company
        or the date that Bain & Company, Inc. gives the Company notice that it
        is ceasing to serve as a consultant to the Company, whichever is
        earlier. The vesting of this Warrant is earned by Bain & Company, Inc.'s
        continued service as a consultant. This Warrant does not constitute an
        express or implied promise of a continued consulting relationship for
        the vesting period or any other period.

               If Bain & Company, Inc. temporarily ceases to serve as Consultant
        to the Company, then the vesting shall end as of the date services cease
        and shall resume when services are re-engaged, but in no event later
        than the expiration date of the warrant.


                                       2


<PAGE>   10


3.      Method of Exercise; Payment; Issuance of New Warrant

        The holder hereof shall have the option to exercise this Warrant
pursuant to the method set out in either Section 3(a) or 3(b) below.

        (a) Standard Method. This Warrant may be exercised by the holder hereof,
        in whole or in part, by the surrender of this Warrant at the principal
        office of the Company and by the payment to the Company, in cash or by
        check acceptable to the Company, of an amount equal to the then
        applicable Warrant Price per share multiplied by the number of shares
        then being purchased.

        (b) Net Issuance Method. This Warrant may be exercised by the holder
        hereof, in whole or in part, by the surrender of this Warrant at the
        principal office of the Company. Upon such surrender, the holder of this
        Warrant is entitled to receive such number of fully paid and non
        assessable shares of the Company's Common stock as equals the product of
        (x) and (y) below, where (x) equals the quotient of (i) the Value at
        Exercise less the then applicable Warrant Price divided by (ii) the
        Value at Exercise and (y) equals the number of Shares for which this
        Warrant is being exercised. If the result of the foregoing calculation
        results in a number equal to or less than zero, no shares shall be
        delivered upon surrender of this Warrant.

        (c) Issuance of New Warrant. In the event of any exercise of the rights
        represented by this Warrant, certificates for the shares of Common Stock
        issuable upon such exercise shall be delivered to the holder hereof
        within a reasonable time and, unless this Warrant has been fully
        exercised or expired, a new Warrant representing the portion of the
        Shares, if any, with respect to which this Warrant shall not then have
        been exercised shall also be issued to the holder hereof within such
        reasonable time. The holder hereof shall pay all transfer taxes, if any,
        arising from the exercise of this Warrant, and shall pay to the Company
        amounts necessary to satisfy any applicable federal, state and local
        withholding requirements.

4.      Stock Fully Paid; Reservation of Shares

        All shares of Common Stock which may be issued upon the exercise of the
rights represented by this Warrant will, upon issuance, be fully paid and non
assessable. During the period within which the rights represented by this
Warrant may be exercised, the Company will, at all times have authorized and
reserved a sufficient number of shares of its Common Stock to provide for the
exercise of the rights represented by this Warrant.

5.      Adjustment of Purchase Price and Number of Share.

        The securities purchasable upon the exercise of this Warrant and the
Warrant Price shall be subject to adjustment from time to time upon the
occurrence of certain events, as follows:


                                       3


<PAGE>   11


        (a) Subdivision or Combination of Shares. If the Company at any time
        while this Warrant remains outstanding and unexpired shall subdivide or
        combine its Common Stock, the Warrant Price shall be proportionately
        decreased in the case of a subdivision or increased in the case of a
        combination.

        (b) In the case of any reclassification or similar change of outstanding
        shares of Common Stock, or in case of any consolidation of the Company
        with or merger of the Company into another corporation (other than a
        merger whose sole purpose is to change the state of incorporation of the
        Company or a consolidation or merger in which the Company is the
        continuing corporation and which does not result in any reclassification
        or change of outstanding shares of Common Stock), or in case of any sale
        or conveyance to another corporation of the property of the Company as
        and entirety or substantially as an entirety, the holder hereof shall
        have the right thereafter without payment of additional consideration,
        upon exercise of its rights hereunder, to receive the kind and amount of
        shares of stock and other securities and property that the holder hereof
        would have received, upon such reclassification, change, consolidation,
        merger, sale of conveyance. Alternatively, the Board of Directors of the
        Company may, in its sole discretion, provide a 30-day period immediately
        prior to such event in which the holder shall have the right to exercise
        the Warrant in whole or in part without regard to limitations on
        vesting. It shall be a condition of the effectiveness of any such
        transaction that one of the foregoing provisions of the benefit of this
        Warrant shall be lawfully and adequately provided for.

        (c) Stock Dividends. If the Company at any time while this Warrant is
        outstanding and unexpired shall pay a dividend with respect to Common
        Stock payable in Common Stock, then the Warrant Price shall be adjusted,
        from and after the date of determination of stockholders entitled to
        receive such dividend, to that price determined by multiplying the
        Warrant Price in effect immediately prior to such date of determination
        by a fraction (i) the numerator of which shall be the total number of
        shares of Common Stock outstanding immediately prior to such dividend,
        and (ii) the denominator of which shall be the total number of shares of
        Common Stock outstanding immediately after such dividend.

        (d) Adjustment of Number of Shares. Upon each adjustment in the Warrant
        Price, the number of Shares shall be adjusted, to the nearest whole
        share, to the product obtained by multiplying the number of Shares
        immediately prior to such adjustment in the Warrant Price by a fraction,
        the numerator of which shall be the Warrant Price immediately prior to
        such adjustment and the denominator of which shall be the Warrant Price
        immediately thereafter.


                                       4


<PAGE>   12


6.      Notice of Adjustments.

        Whenever any Warrant Price shall be adjusted pursuant to Section 5
hereof, the Company shall make a certificate signed by its chief financial
officer setting forth, in reasonable detail, the event requiring the adjustment,
the amount of the adjustment, the method by which such adjustment was
calculated, and the Warrant Price after giving effect to such adjustment, and
shall cause copies of such certificate to be mailed (by first class mail,
postage prepaid) to the holder of this Warrant.

7.      Fractional Shares.

        No fractional shares of Common Stock will be issued in connection with
any exercise hereunder, but in lieu of such fractional shares the Company shall
make a cash payment therefor upon the basis of the Value at Exercise then in
effect.

8.      Compliance with Securities Act; Non-transferability of Warrant;
        Disposition of Shares of Common Stock.


        (a)Compliance with Securities Act. The holder of this Warrant, by
        acceptance hereof, acknowledges and agrees that this Warrant has not
        been and the shares of Common Stock to be issued upon exercise hereof
        may not be registered under the Act and this Warrant is being and the
        Common Stock may be issued to holder under one or more exemptions from
        registration provided by the Act and the rules and regulations
        promulgated thereunder and that the Company is relying on the truth and
        accuracy of holder's representations and warranties contained herein in
        doing so without registering the same under the Act. Holder represents
        and warrants that (i) this Warrant and the shares of Common Stock to be
        issued upon exercise hereof are being acquired for investment, and not
        with a view to distribution or resale, (ii) holder has such knowledge
        and experience in financial and business matters as to be capable of
        evaluating the risks of this Warrant and any investment in the Common
        Stock upon exercise of this Warrant, (iii) holder has received such
        information concerning the Company and has had an opportunity to make
        inquiry as to the Company so as to allow the holder to make an informed
        investment decision to exercise this Warrant, (iv) holder is an
        "accredited investor" within the meaning of Rule 501 of Regulation D
        promulgated under the Act, and (v) holder will not offer, sell or
        otherwise dispose of this Warrant or any shares of Common Stock to be
        issued upon exercise hereof except under circumstances which will not
        result in a violation of the Act. Upon exercise of this Warrant, holder
        shall, if requested by the Company, confirm in writing to the Company,
        the truth and accuracy of the foregoing representations and warranties
        with respect to holder's investment in the Common Stock. Holder
        acknowledges and agrees that this Warrant and all shares of Common Stock
        issued upon exercise of this Warrant (unless registered under the Act)
        shall be stamped or imprinted with a legend in substantially the
        following form:


                                       5


<PAGE>   13


         "THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES
         ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAW. NO SALE
         OR DISPOSITION MAY BE EFFECTED WITHOUT AN EFFECTIVE
         REGISTRATION STATEMENT RELATED THERETO OR AN OPINION OF
         COUNSEL FOR THE HOLDER, SATISFACTORY TO THE COMPANY, THAT
         SUCH REGISTRATION IS NOT REQUIRED."


        (b) Transferability of Warrant. This Warrant may not be sold,
        transferred or assigned without the prior written consent of the Company
        and, if required, any governmental authority.

        (c) Disposition of Shares of Common Stock. With respect to any offer,
        sale or other disposition of any shares of Common stock acquired
        pursuant to the exercise of this Warrant prior to registration of such
        shares, the holder hereof and each subsequent holder of this Warrant
        agrees to give written notice to the Company prior thereto, describing
        briefly the manner thereof, together with a written opinion of such
        holder's counsel, if requested by the Company, to the effect that such
        offer, sale or other disposition may be effected without registration or
        qualification (under the Act as then in effect or any federal or state
        law than in effect) of such shares of Common Stock and indicating
        whether or not under the Act certificates for such shares of Common
        Stock to be sold or otherwise disposed of require any restrictive legend
        as to applicable restrictions on transferability in order to insure
        compliance with the Act. Promptly upon receiving such written notice and
        reasonably satisfactory opinion, if so requested, the Company shall
        notify such holder that such holder may sell or otherwise dispose of
        such shares of Common Stock in accordance with the terms of the notice
        delivered to the Company., If the opinion of counsel for the holder is
        not reasonably satisfactory to the Company, the Company shall promptly
        notify the holder.

               Notwithstanding the foregoing paragraph, such shares of Common
        Stock may be offered, sold or otherwise disposed of in accordance with
        Rule 144 under the Act, provided that the Company shall have been
        furnished with such information as the Company may request to provide a
        reasonable assurance that the provisions of Rule 144 have been
        satisfied.

               Each certificate representing the shares of Common Stock thus
        transferred (except a transfer pursuant to Rule 144) shall bear a legend
        as to the applicable restrictions on transferability in order to insure
        compliance with the Act, unless in the aforesaid opinion of counsel for
        the holder, such legend is not required in order to insure compliance
        with the Act. The Company may issue stop transfer instructions to its
        transfer agent in connections with such restrictions.


                                       6


<PAGE>   14


9.      No Rights of Stockholders.

        No holder of this Warrant shall be entitled to vote or receive dividends
or be deemed the holder of Common Stock, nor shall anything contained herein be
construed to confer upon the holder of this Warrant, as such, any of the rights
of a stockholder of the Company or any right to vote for the election of
directors or upon any matter submitted to stockholders at any meeting thereof,
or to give or withhold consent to any corporate action (whether upon any
recapitalization, issuance of stock, reclassification of stock, change of par
value or change of stock to no par value, consolidation, merger, conveyance, or
otherwise) or to receive notice of meetings, or to receive dividends or
subscription rights or otherwise.

10.     Expiration of Warrant.

        This Warrant shall expire and shall no longer be exercisable as of 5:00
p.m., Pacific Standard Time, on July 17, 2000.


                                ADAC LABORATORIES



                                By:
                                   -------------------
                                   ROBERT A. STARR
                                   Assistant Secretary


Date of Grant:  July 17, 1995




ACCEPTED AND AGREED

BAIN & COMPANY, INC.



By:
    ------------------------------ 

Name: 
      ----------------------------    

Title:
       -----------------------------


                                       7



<PAGE>   1


                                   EXHIBIT 5.1
                            


                                 August 20, 1997


ADAC Laboratories
540 Alder Drive
Milpitas, California  95035

Gentlemen:

               I am the Vice President, General Counsel and Secretary of the
Company and have acted as Company counsel in connection with the offering and
proposed sale of up to 331,658 shares of the Company's Common Stock (the "Common
Stock") to be offered by third parties pursuant to a Registration Statement on
Form S-3 to be filed under the Securities Act of 1933, (the "Registration
Statement"). In this connection I have examined: (a) the Company's Registration
Statement; (b) the Company's Certificate of Incorporation and Bylaws, as amended
to date; (c) minutes of meetings of the Company's Board of Directors; and (d)
such other proceedings, documents and records as we have deemed necessary to
enable me to render this opinion.

               Based upon the foregoing, I am of the opinion that, when sold as
contemplated by the Registration Statement, the shares of Common Stock covered
by the Registration Statement will be validly issued, fully paid and
nonassessable.

               I hereby consent to the use of this opinion as an exhibit to the
Registration Statement and to the reference to me under the caption "Legal
Matters" in the Prospectus included therein.





                               By /s/ KAREN L. MASTERSON
                                 ----------------------------------------  
                                 Karen L. Masterson
                                 Vice President, General Counsel and Secretary





<PAGE>   1


                                  EXHIBIT 23.1



                       CONSENT OF INDEPENDENT ACCOUNTANTS


We consent to the incorporation by reference in this registration statement of
ADAC Laboratories on Form S-3 of our report dated November 4, 1996 on our audits
of the consolidated financial statements and financial statement schedules of
ADAC Laboratories as of September 29, 1996 and October 1, 1995, and for each of
the three fiscal years in the period ended September 29, 1996 which report is
included in the Company's Annual Report on Form 10-K for the fiscal year ended
September 29, 1996. We also consent to the reference to our firm under the
caption "Experts."


                                    /s/ Coopers & Lybrand L.L.P.


San Jose, California
August 20,1997






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