INSIGHT HEALTH SERVICES CORP
8-K/A, 1998-07-21
MEDICAL LABORATORIES
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<PAGE>
                                   UNITED STATES
                         SECURITIES AND EXCHANGE COMMISSION

                              WASHINGTON, D.C.  20549

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

                                     FORM 8-K/A
                                  AMENDMENT NO. 1

                                   CURRENT REPORT
                       PURSUANT TO SECTION 13 OR 15(d) OF THE
                          SECURITIES EXCHANGE ACT OF 1934




DATE OF REPORT (DATE OF EARLIEST EVENT REPORTED)       July 21, 1998
                                                ------------------------------


                           InSight Health Services Corp.
- ------------------------------------------------------------------------------
                (EXACT NAME OF REGISTRANT AS SPECIFIED IN CHARTER)



     Delaware                        0-28622                   33-0702770
- ------------------------------------------------------------------------------
(STATE OR OTHER JURISDICTION       (COMMISSION              (I.R.S EMPLOYER
   OF INCORPORATION)                FILE NUMBER)          IDENTIFICATION NO.)



           4400  MacArthur Boulevard, Suite 800, Newport Beach, CA  92660
           --------------------------------------------------------------
           (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)            (ZIP CODE)



                                  (949)  476-0733
           --------------------------------------------------------------
                 REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE


                                        N/A
           --------------------------------------------------------------
            (FORMER NAME OR FORMER ADDRESS, IF CHANGED SINCE LAST REPORT)

<PAGE>

ITEM 7.   FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND
          EXHIBITS.

          (a)  Financial statements of businesses acquired.
          
               The financial statements of Signal Medical Services, Inc.
          ("Signal") required by this item are attached as Exhibit 99.1 (a).
          
          (b)  Pro forma financial information (unaudited).
          
               The unaudited pro forma combined condensed financial statements
          are presented which reflect the acquisition by merger of Signal by
          InSight Health Services Corp. ("Registrant") through its wholly owned
          subsidiary, SMSI Acquisition Company.  The unaudited pro forma
          combined condensed financial statements are provided for informational
          purposes only and are not necessarily indicative of the results that
          actually would have occurred had the acquisition been in effect for
          the period presented.
          
               The unaudited pro forma combined condensed balance sheet is based
          on the historical balance sheet as of March 31, 1998 and is presented
          as if the acquisition had been consummated at that date.  The
          unaudited proforma combined condensed consolidated statements of
          operations are based on the historical statements of operations of
          each of Registrant and Signal for the nine months ended March 31,
          1998, and reflect certain adjustments to give effect to the
          acquisition as if it had occurred on July 1, 1997, and for the year
          ended June 30, 1997, and reflect certain adjustments to give effect to
          the acquisition as if it had occurred on July 1, 1996.
               
               Pro forma adjustments are based on the purchase method of
          accounting and a preliminary allocation of the purchase price. 
          However, changes to the adjustments included in the unaudited pro
          forma combined condensed financial statements are expected as
          evaluations of assets and liabilities are completed and additional
          information becomes available.  Accordingly, the final allocated
          values will differ from the amounts used to calculate the adjustment
          in the unaudited pro forma combined condensed consolidated statements
          of operations.

          (c)  Exhibits.

          23   Consent of Independent Public Accountant (filed herewith).

          99.1 (a)  Financial Statements of Signal Medical Services, Inc. (filed
               herewith).

          99.1 (b)  Unaudited Pro Forma Combined Condensed Financial Statements
               of InSight Health Services Corp (filed herewith).


                                        2

<PAGE>

                                     SIGNATURES
                                          
     Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.


Date:  July 21, 1998

                              INSIGHT HEALTH SERVICES CORP.


                              /s/   E. Larry Atkins         
                              -------------------------------
                              E. Larry Atkins
                              President and Chief Executive Officer


                                        3
<PAGE>

                                  EXHIBIT INDEX
                                                 
                                          
<TABLE>
<CAPTION>
                                                                              SEQUENTIALLY
EXHIBIT NO.    DOCUMENT DESCRIPTION                                           NUMBERED PAGE
- -----------    --------------------                                           -------------
<C>            <C>                                                            <C>
23             Consent of Independent Public Accountants (filed herewith).

99.1 (a)       Financial Statements of Signal Medical Services, Inc.
               (filed herewith).
          
99.1 (b)       Unaudited Pro Forma Combined Condensed Financial
               Statements of InSight Health Services Corp (filed herewith).
</TABLE>
          
                                       4

<PAGE>


                                    EXHIBIT NO. 23



The Board of Directors and Stockholders
Signal Medical Services, Inc.:

     We consent to the inclusion of our report dated January 9, 1998, with 
respect to the balance sheets of Signal Medical Services, Inc. as of December 
31, 1997 and 1996, and the related statements of income, stockholders' 
equity, and cash flows for the years then ended, which report appears in the 
Form 8-K of InSight Health Services Corp. dated July 21, 1998.



                                      KPMG Peat Marwick, LLP



Hartford, Connecticut
July 21, 1998



                                       5

<PAGE>
                                                               EXHIBIT 99.1(A)

                         SIGNAL MEDICAL SERVICES, INC.
                         INDEX TO FINANCIAL STATEMENTS
 
<TABLE>
<CAPTION>
                                                                                                         PAGE
                                                                                                      -----------
<S>                                                                                                   <C>
 
Independent Auditors' Report........................................................................      7
 
Balance Sheets as of December 31, 1997 and 1996.....................................................      8
 
Statements of Income for the Years Ended December 31, 1997 and 1996.................................      9
 
Statements of Stockholders' Equity for the Years Ended December 31, 1997 and 1996...................      10
 
Statements of Cash Flows for the Years Ended December 31, 1997 and 1996.............................      11
 
Notes to Financial Statements.......................................................................      12
 
Balance Sheets (unaudited) as of March 31, 1998 and 1997............................................      20
 
Statements of Income and Retained Earnings (unaudited) for the Three Months Ended March 31, 1998 and
  1997..............................................................................................      21
 
Statements of Cash Flows (unaudited) for the Three Months Ended March 31, 1998 and 1997.............      22
 
Notes to Financial Statements.......................................................................      23
</TABLE>
 
                                      6
<PAGE>
                          INDEPENDENT AUDITORS' REPORT
 
The Board of Directors and Stockholders
Signal Medical Services, Inc.:
 
    We have audited the accompanying balance sheets of Signal Medical Services,
Inc. as of December 31, 1997 and 1996, and the related statements of income,
stockholders' equity and cash flows for the years then ended. These financial
statements are the responsibility of the Company's management. Our
responsibility is to express an opinion on these financial statements based on
our audits.
 
    We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
    In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of Signal Medical Services,
Inc. as of December 31, 1997 and 1996, and the results of its operations and its
cash flows for the years then ended in conformity with generally accepted
accounting principles.
 
                                          KPMG Peat Marwick LLP
 
Hartford, Connecticut
January 9, 1998
 
                                        7
<PAGE>
                         SIGNAL MEDICAL SERVICES, INC.
 
                                 BALANCE SHEETS
 
                           DECEMBER 31, 1997 AND 1996
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                                                           1997           1996
                                                                                       -------------  ------------
<S>                                                                                    <C>            <C>
Current assets:
  Cash and cash equivalents..........................................................  $   1,847,000       667,000
  Accounts receivables, net of allowance of $101,000 and $44,000.....................      3,219,000     2,388,000
  Other receivables..................................................................         52,000        11,000
  Prepaid expenses and other assets..................................................         93,000        90,000
                                                                                       -------------  ------------
    Total current assets.............................................................      5,211,000     3,156,000
                                                                                       -------------  ------------
Property and equipment:
  Medical equipment..................................................................     23,607,000    18,430,000
  Furniture, fixtures and other equipment............................................        390,000       291,000
                                                                                       -------------  ------------
                                                                                          23,997,000    18,721,000
  Less accumulated depreciation and amortization.....................................     10,762,000     7,112,000
                                                                                       -------------  ------------
    Property and equipment, net......................................................     13,235,000    11,609,000
                                                                                       -------------  ------------
Other assets, net....................................................................        580,000       488,000
                                                                                       -------------  ------------
                                                                                       $  19,026,000    15,253,000
                                                                                       -------------  ------------
                                                                                       -------------  ------------
                                       LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
  Accounts payable...................................................................  $     627,000       425,000
  Accrued compensation...............................................................        792,000       583,000
  Accrued maintenance................................................................        259,000        64,000
  Other accrued expenses and other liabilities.......................................        869,000       838,000
  Short-term borrowings..............................................................       --             294,000
  Current portion of long-term debt..................................................      3,227,000     3,314,000
  Current portion of capital lease obligation........................................        309,000       --
                                                                                       -------------  ------------
    Total current liabilities........................................................      6,083,000     5,518,000
 
Long-term debt.......................................................................      3,712,000     4,447,000
Accrued taxes........................................................................      1,008,000       771,000
Deferred income taxes................................................................        801,000       389,000
Other liabilities....................................................................        380,000       140,000
Long-term portion of capital lease obligation........................................      1,545,000       --
                                                                                       -------------  ------------
    Total liabilities................................................................     13,529,000    11,265,000
                                                                                       -------------  ------------
Redeemable convertible cumulative preferred stock, $.01 par value, 60,000 shares
  authorized, issued and outstanding, redeemable at $33.34 per share.................      2,000,000     2,000,000

Stockholders' equity:
  Common stock, $.01 par value, 110,000 shares authorized, 33,500 shares issued......       --             --
  Additional paid-in capital.........................................................        156,000       156,000
  Retained earnings..................................................................      3,841,000     2,332,000
Less cost of 17,580 treasury shares..................................................       (500,000)     (500,000)
                                                                                       -------------  ------------
    Total stockholders' equity.......................................................      3,497,000     1,988,000
                                                                                       -------------  ------------
Commitments and contingencies
                                                                                       $  19,026,000    15,253,000
                                                                                       -------------  ------------
                                                                                       -------------  ------------
</TABLE>
 
                See accompanying notes to financial statements.
 
                                       8
<PAGE>
                         SIGNAL MEDICAL SERVICES, INC.
 
                              STATEMENTS OF INCOME
 
                 FOR THE YEARS ENDED DECEMBER 31, 1997 AND 1996
 
<TABLE>
<CAPTION>
                                                                                         1997           1996
                                                                                     -------------  -------------
<S>                                                                                  <C>            <C>
Revenues...........................................................................  $  20,704,000     17,852,000
                                                                                     -------------  -------------
Operating costs and expenses:
  Operating costs..................................................................      7,455,000      6,592,000
  Selling, general and administrative..............................................      2,701,000      2,257,000
  Lease expense....................................................................      3,697,000      3,140,000
  Depreciation and amortization....................................................      3,676,000      3,200,000
  Interest expense, net of interest income of $27,000 and $26,000..................        654,000        827,000
                                                                                     -------------  -------------
 
    Total operating costs and expenses.............................................     18,183,000     16,016,000
                                                                                     -------------  -------------
    Income before income taxes.....................................................      2,521,000      1,836,000
 
Income Taxes                                                                             1,012,000        735,000
                                                                                     -------------  -------------
    Net Income.....................................................................  $   1,509,000      1,101,000
                                                                                     -------------  -------------
                                                                                     -------------  -------------
</TABLE>
 
                See accompanying notes to financial statements.
 
                                       9
<PAGE>
                         SIGNAL MEDICAL SERVICES, INC.
 
                       STATEMENTS OF STOCKHOLDERS' EQUITY
 
                 FOR THE YEARS ENDED DECEMBER 31, 1997 AND 1996
 
<TABLE>
<CAPTION>
                                                                   ADDITIONAL                              TOTAL
                                                        COMMON       PAID-IN     RETAINED    TREASURY   STOCKHOLDERS'
                                                         STOCK       CAPITAL     EARNINGS     STOCK        EQUITY
                                                      -----------  -----------  ----------  ----------  ------------
<S>                                                   <C>          <C>          <C>         <C>         <C>
Balance, December 31, 1995..........................   $  --          156,000    1,231,000    (500,000)     887,000
Net Income..........................................      --           --        1,101,000      --        1,101,000
                                                      -----------  -----------  ----------  ----------  ------------
Balance, December 31, 1996..........................      --          156,000    2,332,000    (500,000)   1,988,000
Net Income..........................................      --           --        1,509,000      --        1,509,000
                                                      -----------  -----------  ----------  ----------  ------------
Balance, December 31, 1997..........................   $  --          156,000    3,841,000    (500,000)   3,497,000
                                                      -----------  -----------  ----------  ----------  ------------
                                                      -----------  -----------  ----------  ----------  ------------
</TABLE>
 
                See accompanying notes to financial statements.
 
                                       10
<PAGE>
                         SIGNAL MEDICAL SERVICES, INC.
 
                            STATEMENTS OF CASH FLOWS
 
                 FOR THE YEARS ENDED DECEMBER 31, 1997 AND 1996
 
<TABLE>
<CAPTION>
                                                                                          1997           1996
                                                                                      -------------  -------------
<S>                                                                                   <C>            <C>
Cash flows from operating activities:
  Net income........................................................................  $   1,509,000      1,101,000
Adjustments to reconcile net income to net cash provided by operating activities:
    Depreciation and amortization...................................................      3,676,000      3,200,000
    Change in assets and liabilities:
      Increase in accounts receivable...............................................       (831,000)      (288,000)
      Decrease (increase) in other receivables......................................        (41,000)        56,000
      Increase in prepaid expenses and other current assets.........................         (3,000)       (39,000)
      Decrease (increase) in other assets...........................................         66,000        (84,000)
      Increase in accounts payable, accrued expenses and other liabilities..........      1,526,000      1,029,000
                                                                                      -------------  -------------
        Net cash provided by operating activities...................................      5,902,000      4,975,000
                                                                                      -------------  -------------
Cash flows used in investing activities:
  Additions to medical equipment, furniture and fixtures............................     (3,421,000)    (2,918,000)
  Investment in joint ventures......................................................       (185,000)      --
                                                                                      -------------  -------------
        Net cash used in investing activities.......................................     (3,606,000)    (2,918,000)
                                                                                      -------------  -------------
Cash flows used in financing activities:
  Net decrease in short-term borrowings.............................................       (294,000)      (156,000)
  Proceeds from long-term debt......................................................      2,720,000        475,000
  Repayment of long-term debt.......................................................     (3,542,000)    (3,151,000)
                                                                                      -------------  -------------
        Net cash used in financing activities.......................................     (1,116,000)    (2,832,000)
                                                                                      -------------  -------------
Net increase (decrease) in cash and cash equivalents................................      1,180,000       (775,000)
 
Cash and cash equivalents, beginning of period......................................        667,000      1,442,000
                                                                                      -------------  -------------
Cash and cash equivalents, end of period............................................  $   1,847,000        667,000
                                                                                      -------------  -------------
                                                                                      -------------  -------------
Cash paid for income taxes..........................................................  $     807,000        381,000
                                                                                      -------------  -------------
                                                                                      -------------  -------------
 
Cash paid for interest..............................................................  $     599,000        850,000
                                                                                      -------------  -------------
                                                                                      -------------  -------------
 
Capital lease obligation incurred...................................................  $   1,854,000       --
                                                                                      -------------  -------------
                                                                                      -------------  -------------
</TABLE>
 
                See accompanying notes to financial statements.
 
                                       11
<PAGE>
                         SIGNAL MEDICAL SERVICES, INC.
 
                         NOTES TO FINANCIAL STATEMENTS
 
                           DECEMBER 31, 1997 AND 1996
 
(1) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
    (a) NATURE OF BUSINESS
 
       Signal Medical Services, Inc. (the Company) provides fixed site and
       mobile magnetic resonance imaging (MRI), computer tomography (CT),
       general radiology and lithotripsy equipment and operations under
       contracts with hospitals and other health care providers throughout the
       United States. The Company's customer contracts at December 31, 1997 are
       primarily with health care providers in the northeastern and southeastern
       United States.
 
       During 1997, the Company developed and began operating several new
       ventures, which are jointly owned by the Company and its respective joint
       venture partners. These joint ventures include a medical billing and
       collection company, a mobile lithotripsy joint venture and a mobile x-ray
       and ultrasound company. The Company's investment in these joint ventures
       totaled $185,000 and is included in other assets. The Company also began
       managing two newly developed multi-modality imaging centers in which the
       Company expects to acquire a 50% ownership interest during the first
       quarter of 1998. The Company's ownership interest in these joint ventures
       varies from 35% to 60%, and the operating results of these joint ventures
       was not material to the Company's 1997 financial statements.
 
    (b) REVENUE RECOGNITION
 
       Revenues are recognized at the time equipment and related services are
       provided, generally on a fee-per-procedure or daily fee basis.
 
    (c) MEDICAL EQUIPMENT AND FURNITURE AND FIXTURES
 
       Medical equipment and furniture and fixtures are stated at cost.
       Depreciation and amortization are provided on the straight-line method
       over the following estimated useful lives:
 
<TABLE>
<S>                                                      <C>
 Medical equipment......................................  2 to 7 years
 Furniture, fixtures and other equipment................  2 to 5 years
</TABLE>
 
       Repairs and maintenance expenditures are charged to expense as incurred.
       Leased property meeting certain criteria is capitalized and the present
       value of the related lease payments is recorded as a liability.
       Amortization of capitalized leased assets is computed on the
       straight-line method over the term of the lease or estimated useful life
       of the equipment, whichever is shorter.
 
       Property acquired under capital leases consists of the following:
 
<TABLE>
<CAPTION>
                                                              1997          1996
                                                          ------------  ------------
<S>                                                       <C>           <C>
Medical Equipment.......................................  $  1,854,000       --
Accumulated Amortization................................       --            --
                                                          ------------  ------------
                                                          $  1,854,000       --
                                                          ------------  ------------
                                                          ------------  ------------
</TABLE>
 
    (d) OTHER ASSETS
 
       Other assets include deferred financing costs and certain deferred costs
       incurred in connection with the Company's contracts with health care
       providers. These assets are being amortized using the straight-line
       method over the terms of the related debt and contracts which range from
       5 to 7 years. Accumulated amortization amounted to $258,000 in 1997 and
       $178,000 in 1996.
                                        12
<PAGE>
                         SIGNAL MEDICAL SERVICES, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                           DECEMBER 31, 1997 AND 1996
 
(1) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    (e) CASH AND CASH EQUIVALENTS
 
       For purposes of the statement of cash flows, the Company considers all
       highly liquid short-term investments with an original maturity of three
       months or less to be cash equivalents. At December 31, 1997, cash and
       cash equivalents consisted primarily of cash invested in a money market
       account and overnight investment account.
 
    (f) INCOME TAXES
 
       Deferred tax assets and liabilities are recognized for the future tax
       consequences attributable to differences between the financial statement
       carrying amounts of existing assets and liabilities and their respective
       tax bases. Deferred tax assets and liabilities are measured using enacted
       tax rates expected to apply to taxable income in the years in which those
       temporary differences are expected to be recovered or settled. The effect
       on deferred tax assets and liabilities of a change in tax rates is
       recognized in income in the period that includes the enactment date.
 
    (g) USE OF ESTIMATES
 
       Management of the Company has made several estimates and assumptions
       relating to the reporting of certain assets, including the allowance for
       doubtful receivables, and liabilities and the disclosure of contingent
       liabilities to prepare these financial statements in conformity with
       generally accepted accounting principles. Actual results could differ
       from those estimates.
 
       The components of the allowance for doubtful receivables for the years
       ended December 31, 1997 and 1996 were as follows:
 
<TABLE>
<S>                                                         <C>
Balance at January 1, 1996................................  $  55,000
    Charged to operating costs............................     --
    Write-offs............................................    (11,000)
                                                            ---------
Balance at December 31, 1996..............................     44,000
    Charged to operating costs............................     40,000
    Write-offs............................................     --
    Other.................................................     17,000
                                                            ---------
Balance at December 31, 1997..............................  $ 101,000
                                                            ---------
                                                            ---------
</TABLE>
 
    (h) RECLASSIFICATIONS
 
       Certain amounts in the 1996 financial statements have been reclassified
       to conform to the 1997 presentation.
 
    (i) IMPAIRMENT OF LONG-LIVED ASSETS AND LONG-LIVED ASSETS TO BE DISPOSED OF
 
       The Company adopted the provisions of SFAS No. 121, ACCOUNTING FOR THE
       IMPAIRMENT OF LONG-LIVED ASSETS AND FOR LONG-LIVED ASSETS TO BE DISPOSED
       OF, on January 1, 1996. This Statement requires that long-lived assets
       and certain identifiable intangibles be reviewed for impairment whenever
       events or changes in circumstances indicate that the carrying amount of
       an asset may not be recoverable. Recoverability of assets to be held and
       used is measured by a comparison of the carrying amount of an asset to
       future net cash flows expected to be generated by the asset. If such
       assets are considered to be impaired, the impairment to be recognized is
       measured by the
 
                                       13
<PAGE>
                         SIGNAL MEDICAL SERVICES, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                           DECEMBER 31, 1997 AND 1996
 
(1) SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
       amount by which the carrying amount of the assets exceeds the fair value
       of the assets. Adoption of this Statement did not have any impact on the
       Company's financial position, results of operations, or liquidity.
 
(2) LEASES
 
       The Company leases certain medical equipment, office space and fixed site
       MRI operating space. Future minimum lease commitments under noncancelable
       leases with a term of 12 months or more are as follows at December 31,
       1997:
 
<TABLE>
<CAPTION>
                                                                    CAPITALIZED    OPERATING
                                                                       LEASES        LEASES
                                                                    ------------  ------------
<S>                                                                 <C>           <C>
1998..............................................................  $    446,000  $  1,166,000
1999..............................................................       432,000     1,062,000
2000..............................................................       405,000       565,000
2001..............................................................       378,000       341,000
2002..............................................................       351,000        94,000
Thereafter........................................................       322,000       --
                                                                    ------------  ------------
  Total minimum lease payments....................................     2,334,000  $  3,228,000
                                                                                  ------------
                                                                                  ------------
Amounts representing interest.....................................      (480,000)
                                                                    ------------
  Present value of net minimum payments...........................     1,854,000
Current portion...................................................      (309,000)
                                                                    ------------
    Long-term portion of capital lease obligation.................  $  1,545,000
                                                                    ------------
                                                                    ------------
</TABLE>
 
    Total operating lease expense for medical equipment amounted to $3,697,000
in 1997 and $3,140,000 in 1996. Other rent expense, which is included in
selling, general and administrative expenses, totaled $125,000 for 1997 and
$122,000 for 1996, respectively.
 
(3) INCOME TAXES
 
    Income tax expense consisted of the following:
 
<TABLE>
<CAPTION>
YEAR ENDED DECEMBER 31, 1997                                 CURRENT    DEFERRED     TOTAL
- ----------------------------------------------------------  ----------  ---------  ----------
<S>                                                         <C>         <C>        <C>
U.S. Federal..............................................  $  451,000    355,000     806,000
State and Local...........................................     149,000     57,000     206,000
                                                            ----------  ---------  ----------
                                                               600,000    412,000   1,012,000
                                                            ----------  ---------  ----------
                                                            ----------  ---------  ----------
YEAR ENDED DECEMBER 31, 1996
- ----------------------------------------------------------
U.S. Federal..............................................     341,000    296,000     637,000
State and Local...........................................      70,000     28,000      98,000
                                                            ----------  ---------  ----------
                                                            $  411,000    324,000     735,000
                                                            ----------  ---------  ----------
                                                            ----------  ---------  ----------
</TABLE>
 
                                       14
<PAGE>
                         SIGNAL MEDICAL SERVICES, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                           DECEMBER 31, 1997 AND 1996
 
(3) INCOME TAXES (CONTINUED)
    Income tax expense differed from the amount computed by applying the U.S.
federal income tax rate of 34% to pretax income in 1997 and 1996. As a result of
the following:
 
<TABLE>
<CAPTION>
                                                                           1997                          1996
                                                               -----------------------------  ---------------------------
                                                                               % OF PRETAX                  % OF PRETAX
                                                                  AMOUNT        EARNINGS        AMOUNT       EARNINGS
                                                               ------------  ---------------  ----------  ---------------
<S>                                                            <C>           <C>              <C>         <C>
"Expected" tax expense.......................................  $    857,000         34%       $  624,000         34%
State corporation taxes, net of federal tax benefit..........       136,000          5%           65,000          4%
Other........................................................        19,000          1%           46,000          2%
                                                               ------------         ---       ----------          --
                                                               $  1,012,000         40%       $  735,000         40%
                                                               ------------         ---       ----------         ---
                                                               ------------         ---       ----------         ---
                                                           
</TABLE>
 
    The tax effects of temporary differences that gave rise to significant
portions of the deferred tax assets and deferred tax liabilities at December 31,
1997 and 1996 are presented below:
 
<TABLE>
<CAPTION>
                                                                                            1997          1996
                                                                                        ------------  ------------
<S>                                                                                     <C>           <C>
Deferred tax assets:
  Allowance for doubtful receivables..................................................  $     33,000        17,000
  Option compensation expense.........................................................        43,000        43,000
  Unamortized start-up and organization costs incurred prior to inception of business
    operations........................................................................       --              5,000
  Compensated absences, principally due to accrual for financial reporting purposes...        41,000        34,000
  Alternative minimum tax credit carryforward.........................................       --            373,000
  Net operating loss carryforwards....................................................       --             27,000
  Other liabilities...................................................................       346,000       190,000
  State tax credit....................................................................       --             34,000
  Other...............................................................................         3,000         9,000
                                                                                        ------------  ------------
    Total gross deferred tax assets...................................................       466,000       732,000
                                                                                        ------------  ------------
Deferred tax liabilities
    Medical equipment, furniture and fixtures, and other assets principally due to
      differences in depreciation and amortization....................................     1,267,000     1,121,000
                                                                                        ------------  ------------
    Total gross deferred tax liabilities..............................................     1,267,000     1,121,000
                                                                                        ------------  ------------
  Net deferred tax liability..........................................................  $    801,000       389,000
                                                                                        ------------  ------------
                                                                                        ------------  ------------
</TABLE>
 
    Management has concluded that it is more likely than not that the Company
will have sufficient taxable income of an appropriate character within the
carryback and carryforward period permitted by current tax law to allow for the
utilization of the deductible amounts generating the deferred tax asset and,
therefore, no valuation allowance is required.
 
(4) REDEEMABLE CONVERTIBLE CUMULATIVE PREFERRED STOCK
 
    On April 3, 1992, 60,000 shares of $.01 par value series A redeemable 
convertible cumulative preferred stock were issued to SMSI Holding, Inc., a 
wholly owned subsidiary of Anthem Blue Cross and Blue Shield of Connecticut, 
Inc. at $33.34 per share. Each share of series A preferred stock is 
convertible 
 
                                      15
<PAGE>
                         SIGNAL MEDICAL SERVICES, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                           DECEMBER 31, 1997 AND 1996
 
(4) REDEEMABLE CONVERTIBLE CUMULATIVE PREFERRED STOCK (CONTINUED)

into one share of common stock at any time after
the date of issuance. In the event of a public offering of common stock by the
Company, the preferred stock will automatically be converted into shares of
common stock, provided that the offering price per share and gross proceeds from
the offering are not less than $66.68 and $5,000,000 respectively.
 
    On or after April 1, 1997, the series A preferred stock is redeemable at 
$33.34 per share plus any unpaid dividends at the option of SMSI Holding, 
Inc. Upon liquidation, dissolution or winding up of the Company, the holders 
of the series A preferred stock shall be entitled to receive, before any 
distribution is made to the holders of common stock of the Company, a 
distribution of $33.34 per share plus any unpaid dividends. The series A 
preferred stock accumulates a dividend at an annual rate of $2.33 per share 
through March 31, 1994 and $3.00 per share from April 1, 1994 to March 31, 
1997 payable upon a liquidation, dissolution or winding up, conversion or 
redemption, consolidation or merger of the Company. The amount of accumulated 
and unpaid series A preferred stock dividends was $820,000 at December 31, 
1997. The holders of the series A preferred stock are entitled to one vote 
per share of common stock into which the preferred stock is convertible.
 
(5) STOCKHOLDERS' EQUITY
 
    On April 3, 1992, 33,500 shares of $.01 par value common stock were issued
to the founders of the Company.
 
    The Company has a fixed option plan. Under the 1994 Employee Stock Option
Plan, the Company may grant options to its employees for up to 18,000 shares of
common stock. The exercise price of each option equals the fair value of the
Company's stock on the date of grant, and an option's maximum term is ten years.
Options generally vest over a period of one to three years. At December 31,
1997, all options were fully vested.
 
    The Company has elected to adopt the disclosure-only provisions of Statement
of Financial Accounting Standards No. 123, ACCOUNTING FOR STOCK-BASED
COMPENSATION. Accordingly, no compensation cost has been recognized for stock
options issued. The impact on net income in 1997 and 1996 had the Company
adopted FAS 123 would have been immaterial. Options granted, exercised and
outstanding under this plan were as follows:
 
<TABLE>
<CAPTION>
                                                                                      EXERCISE                EXERCISE
                                                                            1997        PRICE       1996        PRICE
                                                                          ---------  -----------  ---------  -----------
<S>                                                                       <C>        <C>          <C>        <C>
Outstanding at beginning of year........................................     14,790      --          13,790   $   18.00
Granted.................................................................     --          --           1,000       83.00
Exercised...............................................................     --          --          --          --
                                                                          ---------               ---------  -----------
Outstanding at end of year..............................................     14,790                  14,790
                                                                          ---------               ---------
                                                                          ---------               ---------
Fair value of options granted during the year...........................  $  --                   $   36.65
                                                                          ---------               ---------
                                                                          ---------               ---------
</TABLE>

    The fair value of stock options granted during 1996 were estimated on the
date of grant using the minimum value method with the following assumptions:
risk-free interest rate of 6.0 percent, expected life of 10 years, and no
dividends.

 
                                       16
<PAGE>
                         SIGNAL MEDICAL SERVICES, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                           DECEMBER 31, 1997 AND 1996
 
 
(6) RELATED PARTY TRANSACTION
 
    On April 3, 1992, the Company loaned $35,000, at an interest rate of 9%, to
an officer and common stockholder of the Company. Interest is due April 1st of
each year and 34% of the officer's annual bonus, if any, must be paid toward the
outstanding principal balance. The remaining balance of the note at December 31,
1997 and 1996 was $0 and $9,000, respectively, and is included in other
receivables.
 
    The Company made advances to its employees and joint ventures which totaled
approximately $32,000 and $21,000 as of December 31, 1997 and 1996,
respectively. These advances are included in other receivables.
 
(7) SHORT-TERM BORROWINGS
 
    The Company has a $1,500,000 line of credit from Anthem Blue Cross and Blue
Shield of Connecticut, Inc. Borrowings under this line bear interest at the
three-month LIBOR rate plus 2% (7.81% at December 31, 1997). The amounts
outstanding at December 31, 1997 and 1996 were $0 and $294,000, respectively.
The weighted average interest rate on the line of credit during 1997 and 1996
was 8.57%, respectively.
 
                                       17
<PAGE>
                         SIGNAL MEDICAL SERVICES, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                           DECEMBER 31, 1997 AND 1996
 
(8) LONG-TERM DEBT
 
    The following schedule summarizes long-term debt at December 31, 1997 and
1996:
 
<TABLE>
<CAPTION>
                                                                                            1997          1996
                                                                                        ------------  ------------
<S>                                                                                     <C>           <C>
Term notes with banks:
 
$450,000, interest fixed at 7.90%; due in 48 equal monthly principal payments through
  May 1, 1997.........................................................................  $    --             38,000
 
$2,500,000, interest fixed at 7.90% through November 1998, variable thereafter; due in
  84 equal monthly principal payments through December 1, 2000........................     1,071,000     1,429,000
 
$3,000,000, interest fixed at 9.50%; due in 60 equal monthly principal payments
  through June 1, 1999................................................................       900,000     1,500,000
 
$824,444, interest fixed at 9.65% through December 1, 1996, variable thereafter; due
  in 47 equal monthly principal payments through October 1, 1998......................       176,000       386,000
 
$1,950,000, interest fixed at 9.95% through January 1, 1998, variable thereafter; due
  in 48 equal monthly principal payments through December 1, 1998.....................       487,000       975,000
 
$750,000, interest fixed at 9.40%; due in 36 equal monthly principal payments through
  January 10, 1998....................................................................       --            250,000
 
$900,000, interest fixed at 9.40%; due in 35 equal monthly principal payments through
  January 10, 1998....................................................................       --            308,000
 
$1,200,000, interest fixed at 8.75%; due in 48 equal monthly principal payments
  through September 11, 1999..........................................................       525,000       825,000
 
$2,100,000, interest fixed at 8.40%; due in 48 equal monthly principal payments
  through December 14, 1999...........................................................     1,050,000     1,575,000
 
$475,000, interest fixed at 8.46%; due in 24 equal monthly principal payments through
  December 31, 1998...................................................................       237,000       475,000
 
$795,000, interest fixed at 8.95%; due in 60 equal monthly principal payments through
  February 28, 2002...................................................................       663,000       --
 
$950,000, interest fixed at 8.90%; due in 60 equal monthly principal payments through
  August 1, 2002......................................................................       887,000       --
 
$975,000, interest fixed at 8.49%; due in 60 equal monthly principal payments through
  October 31, 2002....................................................................       943,000       --
                                                                                        ------------  ------------
 
                                                                                           6,939,000     7,761,000
 
Less current maturities...............................................................     3,227,000     3,314,000
                                                                                        ------------  ------------
 
                                                                                        $  3,712,000     4,447,000
                                                                                        ------------  ------------
                                                                                        ------------  ------------
</TABLE>
 
                                       18
<PAGE>
                         SIGNAL MEDICAL SERVICES, INC.
 
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
 
                           DECEMBER 31, 1997 AND 1996
 
(8) LONG-TERM DEBT (CONTINUED)
    Maturities of long-term debt are as follows:
 
<TABLE>
<S>                                                              <C>
Year ending December 31:
1998...........................................................  $3,227,000
1999...........................................................  1,951,000
2000...........................................................    901,000
2001...........................................................    544,000
2002...........................................................    316,000
Thereafter.....................................................     --
                                                                 ---------
                                                                 $6,939,000
                                                                 ---------
                                                                 ---------
</TABLE>
 
    The term notes contain covenants which, among other things, require
maintenance of certain ratios of liabilities to tangible net worth, debt service
coverage and minimum levels of liquid investments and profitability.
 
    The term notes are secured by the medical equipment purchased with the note
proceeds, the related service contacts with hospital customers and other assets
of the Company.
 
    The Company has a $5,000,000 capital expenditure line of credit with a
financial institution under which it finances equipment acquisitions on a
long-term basis. Interest is at market rates determined at the time of each
drawdown under the line. The unused portion of this line at December 31, 1997
was $5,000,000.
 
(9) CONTINGENCIES
 
    The Company entered into an agreement in 1993 in which it became the
guarantor of a loan between Citrus Memorial Health Foundation, Inc., a customer,
and a bank. This loan had an outstanding principal balance of approximately
$577,000 at December 31, 1997. In September 1994, the Company entered into a
similar loan guarantee with Manchester Memorial Hospital and the same bank. This
loan had an outstanding principal balance of approximately $1,027,000 at
December 31, 1997.
 
    On December 29, 1997, the Company entered in an agreement under which it
became a guarantor of a credit facility between Whitney Imaging Center, LLC
(WIC) and Shoreline Imaging Center, LLC (SIC) as the borrowers and a bank.
Proceeds from the credit facility are being used to finance the development of
the two multi-modality imaging centers owned by WIC and SIC and managed by the
Company. The credit facility is also guaranteed by the owners of WIC and SIC and
is secured by the assets of WIC, SIC and their owners. The Company's guaranty is
unsecured. The total amount committed by the bank under the credit facility is
$2,450,000. Outstanding borrowings under the facility at December 31, 1997
totaled $1,319,000.
 
    In the event that the debtors default under these loans, the Company could
become liable for all unpaid interest and principal. As of December 31, 1997,
the debtors were current as to interest and principal payments under the loans.
 
                                       19
<PAGE>
                         SIGNAL MEDICAL SERVICES, INC.
 
                                 BALANCE SHEETS
 
                            MARCH 31, 1998 AND 1997
 
                                  (UNAUDITED)
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                                                         1998           1997
                                                                                     -------------  -------------
<S>                                                                                  <C>            <C>
Current assets:
  Cash and cash equivalents........................................................  $   1,642,000      1,013,000
  Accounts receivables, net........................................................      3,397,000      2,571,000
  Other receivables................................................................        239,000          6,000
  Prepaid expenses and other assets................................................        121,000        139,000
                                                                                     -------------  -------------
    Total current assets...........................................................      5,399,000      3,729,000
                                                                                     -------------  -------------
Property and equipment:
  Medical equipment, net...........................................................     12,174,000     10,705,000
  Furniture, fixtures and other equipment, net.....................................        112,000         91,000
                                                                                     -------------  -------------
    Property and equipment, net....................................................     12,286,000     10,796,000
                                                                                     -------------  -------------
Other assets, net..................................................................        660,000        546,000
                                                                                     -------------  -------------
                                                                                     $  18,345,000     15,071,000
                                                                                     -------------  -------------
                                                                                     -------------  -------------
                               LIABILITIES AND STOCKHOLDERS' EQUITY
 
Current liabilities:
  Accounts payable.................................................................  $     235,000        326,000
  Accrued compensation.............................................................        516,000        371,000
  Accrued maintenance..............................................................        258,000        126,000
  Other accrued expenses and other liabilities.....................................      1,112,000        778,000
  Current portion of long-term debt................................................      2,993,000      3,304,000
  Current portion of capital lease obligation......................................        309,000       --
                                                                                     -------------  -------------
    Total current liabilities......................................................      5,423,000      4,905,000
                                                                                     -------------  -------------
Long-term debt.....................................................................      3,130,000      4,391,000
Accrued taxes......................................................................      1,307,000        838,000
Deferred income taxes..............................................................        912,000        419,000
Other liabilities..................................................................        139,000        176,000
Long-term portion of capital lease obligation......................................      1,468,000       --
                                                                                     -------------  -------------
    Total liabilities..............................................................     12,379,000     10,729,000
                                                                                     -------------  -------------
Redeemable convertible cumulative preferred stock, $.01 par value, 60,000 shares
  authorized, issued and outstanding, redeemable at $33.34 per share...............      2,000,000      2,000,000

Stockholders' equity:
  Common stock.....................................................................       --             --
  Additional paid-in capital.......................................................        156,000        156,000
  Retained earnings................................................................      4,310,000      2,686,000
Less cost of treasury shares.......................................................       (500,000)      (500,000)
                                                                                     -------------  -------------
    Total stockholders' equity.....................................................      3,966,000      2,342,000
                                                                                     -------------  -------------
                                                                                     $  18,345,000     15,071,000
                                                                                     -------------  -------------
                                                                                     -------------  -------------
</TABLE>
 
                See accompanying notes to financial statements.
 
                                        20
<PAGE>
                         SIGNAL MEDICAL SERVICES, INC.
 
                   STATEMENTS OF INCOME AND RETAINED EARNINGS
 
               FOR THE THREE MONTHS ENDED MARCH 31, 1998 AND 1997
 
                                  (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                                                            1998          1997
                                                                                        ------------  ------------
<S>                                                                                     <C>           <C>
Revenues..............................................................................  $  5,622,000  $  5,085,000
                                                                                        ------------  ------------
Operating costs and expenses:
  Operating costs.....................................................................     2,067,000     1,735,000
  Selling, general and administrative.................................................       845,000       706,000
  Lease expense.......................................................................       686,000       989,000
  Depreciation and amortization.......................................................     1,058,000       888,000
  Interest expense, net of interest income of $15,000 and $1,000......................       171,000       178,000
                                                                                        ------------  ------------
 
    Total operating costs and expenses................................................     4,827,000     4,496,000
                                                                                        ------------  ------------
    Income before income taxes........................................................       795,000       589,000
 
Income Taxes..........................................................................       326,000       235,000
                                                                                        ------------  ------------
    Net Income........................................................................  $    469,000  $    354,000
                                                                                        ------------  ------------
Retained earnings, beginning of period................................................     3,841,000     2,332,000
                                                                                        ------------  ------------
Retained earnings, end of period......................................................     4,310,000     2,686,000
                                                                                        ------------  ------------
                                                                                        ------------  ------------
</TABLE>
 
                See accompanying notes to financial statements.
 
                                       21
<PAGE>
                         SIGNAL MEDICAL SERVICES, INC.
 
                            STATEMENTS OF CASH FLOWS
 
               FOR THE THREE MONTHS ENDED MARCH 31, 1998 AND 1997
 
                                  (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                                                            1998          1997
                                                                                        ------------  ------------
<S>                                                                                     <C>           <C>
Cash flows from operating activities:
  Net income..........................................................................  $    469,000       354,000
  Adjustments to reconcile net income to net cash provided by operating activities:
    Depreciation and amortization.....................................................     1,058,000       888,000
    Change in assets and liabilities:
      Increase in accounts receivable.................................................      (178,000)     (183,000)
      Decrease (increase) in other receivables........................................      (187,000)        5,000
      Increase in prepaid expenses and other current assets...........................       (28,000)      (49,000)
      Increase in other assets........................................................       (82,000)      (65,000)
      Increase in accounts payable, accrued expenses and other liabilities............      (257,000)     (176,000)
                                                                                        ------------  ------------
        Net cash provided by operating activities.....................................       795,000       774,000
                                                                                        ------------  ------------
Cash flows used in investing activities:
  Additions to medical equipment, furniture and fixtures..............................      (107,000)      (68,000)
                                                                                        ------------  ------------
        Net cash used in investing activities.........................................      (107,000)      (68,000)
                                                                                        ------------  ------------
Cash flows used in financing activities:
  Net decrease in short-term borrowings...............................................       --           (294,000)
  Proceeds from long-term debt........................................................       --            795,000
  Repayment of long-term debt.........................................................      (893,000)     (861,000)
                                                                                        ------------  ------------
        Net cash used in financing activities.........................................      (893,000)     (360,000)
                                                                                        ------------  ------------
Net increase (decrease) in cash and cash equivalents..................................      (205,000)      346,000
 
Cash and cash equivalents, beginning of period........................................     1,847,000       667,000
                                                                                        ------------  ------------
Cash and cash equivalents, end of period..............................................  $  1,642,000     1,013,000
                                                                                        ------------  ------------
                                                                                        ------------  ------------
Cash paid for income taxes............................................................  $     68,000       236,000
                                                                                        ------------  ------------
                                                                                        ------------  ------------
Cash paid for interest................................................................       159,000       170,000
                                                                                        ------------  ------------
                                                                                        ------------  ------------
</TABLE>
 
                See accompanying notes to financial statements.
 
                                      22
<PAGE>
                         SIGNAL MEDICAL SERVICES, INC.
 
                         NOTES TO FINANCIAL STATEMENTS
 
                            MARCH 31, 1998 AND 1997
 
(1) BASIS OF PRESENTATION
 
    In the opinion of management, the financial information reflects all
    adjustments which are necessary to a fair presentation of the financial
    position, results of operations and cash flows for the interim periods
    presented and are of a normal recurring nature, unless otherwise disclosed
    in this report.
 
    The statements should be read in conjunction with the notes to the financial
    statements of Signal Medical Services, Inc. (the Company) as of and for the
    years ended December 31, 1997 and 1996.
 
(2) ACQUISITION BY INSIGHT HEALTH SERVICES CORP.
 
    On May 18, 1998, the stock of the Company was acquired by InSight Health
    Services Corp., a leading provider of diagnostic imaging and related
    information services based in Newport Beach, California. The purchase price
    consisted of $46 million (subject to certain post-closing adjustments),
    including the assumption of indebtedness.
 
(3) NEW PRONOUNCEMENTS
 
    In June 1997, the Financial Accounting Standards Board (FASB) issued SFAS
    Nos. 130 and 131, "Reporting Comprehensive Income" and "Disclosures about
    Segments of an Enterprise and Related Information." FASB Nos. 130 and 131
    are effective for fiscal years beginning after December 15, 1997, with
    earlier adoption permitted. The Company believes that adoption of these
    standards will not have a material impact on the Company.
 
                                      23

<PAGE>


                                EXHIBIT 99.1 (B)

(b) (i) PRO FORMA FINANCIAL INFORMATION

                         INSIGHT HEALTH SERVICES CORP.
             UNAUDITED PRO FORMA COMBINED CONDENSED BALANCE SHEET
                                MARCH 31, 1998

                            (Amounts in thousands)

<TABLE>
<CAPTION>
                                                                                         Signal                 Pro
                                               Historical       Historical             Acquisition             Forma
                                                 InSight          Signal               Adjustments           Combined
                                               ----------       ----------             -----------           --------
<S>                                            <C>              <C>                    <C>                   <C>
ASSETS
  Cash and cash equivalents                     $   9,650        $   1,642             $       -            $  11,292
  Trade accounts receivable, net                   21,674            3,397                     -               25,071
  Other receivables, net                              330              239                     -                  569
  Other current assets                              2,149              121                     -                2,270
                                                ---------        ---------             ---------            ---------
  Total current assets                             33,803            5,399                     -               39,202
  Property and equipment, net                      46,745           12,286                 4,309 (2)           63,340
  Investment in partnerships                          495                -                     -                  495
  Other assets net                                  2,471              660                                      3,131
  Intangible assets, net                           43,273                -                26,189 (1)           69,462
                                                ---------        ---------             ---------            ---------
                                                $ 126,787        $  18,345             $  30,498            $ 175,630
                                                ---------        ---------             ---------            ---------
                                                ---------        ---------             ---------            ---------
LIABILITIES AND STOCKHOLDERS' EQUITY                                                                                 
  Current portion of equipment and other notes  $   5,706        $   3,302             $       -            $   9,008
  Accounts payable and accrued expenses            14,905            2,121                     -               17,026
                                                ---------        ---------             ---------            ---------
  Total current liabilities                        20,611            5,423                     -               26,034
  Long term portion of equipment and other note    67,781            4,598                32,155 (1)               
                                                                                           4,309 (2)          108,843
  Other                                               680            2,358                     -                3,038
                                                ---------        ---------             ---------            ---------
  Total liabilities                                89,072           12,379                36,464              137,915
                                                ---------        ---------             ---------            ---------
                                                                                                                     
  Minority interest                                 1,871                -                     -                1,871
                                                ---------        ---------             ---------            ---------

    Redeemable convertible cumulative                                                                                
      preferred stock                                   -            2,000                (2,000)(1)                -
                                                ---------        ---------             ---------            ---------
                                                                                                                     
  Stockholders' equity                                                                                               
    Convertible  Series B preferred stock          23,923                -                     -               23,923
    Convertible Series C preferred stock           13,173                -                     -               13,173
    Common Stock                                        3                -                     -                    3
    Additional paid-in capital                     23,366              156                  (156)(1)           23,366
    (Accumulated deficit) retained earnings       (24,621)           4,310                (4,310)(1)          (24,621)
    Treasury stock                                      -             (500)                  500 (1)              -
                                                ---------        ---------             ---------            ---------
      Total stockholders' equity                   35,844            3,966                (3,966)              35,844
                                                ---------        ---------             ---------            ---------
                                                $ 126,787        $  18,345             $  30,498            $ 175,630
                                                ---------        ---------             ---------            ---------
                                                ---------        ---------             ---------            ---------
</TABLE>



The pro forma condensed combined balance sheet as of March 31, 1998 reflects 
the following pro forma adjustments:
(1) To record the acquisition of common stock of Signal  for $32,155 in 
borrowed funds and the resulting goodwill of $26,189.
(2) To record the acquisition of equipment for debt on equipment that is 
currently under operating leases.

The above reflects the acquisition of Signal by InSight using the purchase 
method of accounting. Under the principles of purchase accounting, the assets 
and liabilities of Signal are stated at fair market value (FMV). For purposes 
of these pro forma financial statements, the book value of Signal's assets 
and liabilities are assumed to approximate FMV.  The excess purchase price is 
allocated to goodwill.





                                       24

<PAGE>


(b) (ii)
                         INSIGHT HEALTH SERVICES CORP.
         UNAUDITED PRO FORMA COMBINED CONDENSED STATEMENT OF OPERATIONS
                       FOR THE YEAR ENDED JUNE 30, 1997
                            (Amounts in thousands)

<TABLE>
<CAPTION>
                                                                                         Signal
                                                    Historical        Historical      Acquisition           Pro Forma
                                                     InSight            Signal        Adjustments            Combined
                                                   -----------        ----------      -----------           ---------
<S>                                                <C>                <C>             <C>                   <C>
Revenues                                           $    93,063        $  19,331       $        -            $ 112,394
                                                   -----------        ---------       ----------            ---------
Costs of services                                       52,070            9,390                -               61,460
Equipment leases                                        18,396            3,651           (1,518)(4)          20,529
Depreciation and amortization                            9,871            3,354            1,309 (1)          15,396
                                                                                                            ---------
                                                                                             862 (2)      
                                                   -----------        ---------       ----------            ---------
Costs of operations                                     80,337           16,395              653               97,385
                                                   -----------        ---------       ----------            ---------
                                                                                                                      
Gross profit                                            12,726            2,936             (653)              15,009
                                                                                                                     
Corporate operating expenses                             7,431                -                -                7,431
                                                   -----------        ---------       ----------            ---------
                                                                                                                     
Income (loss) from company operations                    5,295            2,936             (653)               7,578
                                                                                                                     
Equity in earnings of unconsolidated                                                                                 
  partnerships                                             468                -                -                  468
                                                   -----------        ---------       ----------            ---------
                                                                                                                     
Operating income (loss)                                  5,763            2,936             (653)               8,046
                                                                                                                     
Interest  expense                                        4,055              720            2,894 (3)            7,669
                                                   -----------        ---------       ----------            ---------
                                                                                                                     
Income (loss) before provision for taxes                 1,708            2,216           (3,547)                 377
                                                                                                                     
Provision (benefit) for income taxes                       427              887           (1,220)(5)               94
                                                   -----------        ---------       ----------            ---------
                                                                                                                     
Net income (loss)                                  $     1,281        $   1,329       $   (2,327)           $     283
                                                   -----------        ---------       ----------            ---------
                                                   -----------        ---------       ----------            ---------
                                                                                                                     
Income (loss) per common and preferred share:                                                                        
        Basic                                      $      0.25                                              $    0.05
        Diluted                                    $      0.24                                              $    0.05
Weighted average common shares                                                                                       
  outstanding:                                                                                                       
        Basic                                            5,215                                                  5,215
        Diluted                                          5,440                                                  5,440
</TABLE>


The pro forma combined condensed statement of operations for the year ended 
         June 30, 1997 reflects the following acquisition adjustments:

     (1) To record amortization of goodwill over 20 years.
     (2) To record depreciation expense on operating leases purchased.
     (3) To record interest expense for acquisition financing.
     (4) To record the reversal of lease expense on operating leases purchased.
     (5) To record the tax effect on the above entries at estimated effective 
         rates.

                                       25

<PAGE>

(b) (iii)
                         INSIGHT HEALTH SERVICES CORP.
         UNAUDITED PRO FORMA COMBINED CONDENSED STATEMENT OF OPERATIONS
                    FOR THE NINE MONTHS ENDED MARCH 31, 1998
                            (Amounts in thousands)

<TABLE>
<CAPTION>
                                                                                    Signal
                                                 Historical      Historical       Acquisition         Pro Forma
                                                   InSight         Signal         Adjustments         Combined
                                                 ----------      ----------       -----------         ---------
<S>                                               <C>             <C>             <C>                 <C>
Revenues                                          $  85,673       $  16,095       $       -           $ 101,768
                                                  ---------       ---------       ---------           ---------
Costs of services                                    46,038           5,993               -              52,031
Equipment leases                                     12,983           2,412          (1,138)(4)          14,257
Depreciation and amortization                        10,670           2,989             982 (1)          15,287
                                                                                        646 (2)     
                                                  ---------       ---------       ---------           ---------
Costs of operations                                  69,691          11,394             490              81,575
                                                  ---------       ---------       ---------           ---------

Gross profit                                         15,982           4,701            (490)             20,193

Provision for supplemental service
  fee termination                                     6,309               -                               6,309
Corporate operating expenses                          6,510           2,165               -               8,675
                                                  ---------       ---------       ---------           ---------

Income (loss) from company operations                 3,163           2,536            (490)              5,209

Equity in earnings of unconsolidated
  partnerships                                          480               -               -                 480
                                                  ---------       ---------       ---------           ---------

Operating income (loss)                               3,643           2,536            (490)              5,689

Interest  expense                                     4,665             492           2,170 (3)           7,327
                                                  ---------       ---------       ---------           ---------

Income (loss) before provision for taxes             (1,022)          2,044          (2,660)             (1,638)

Provision (benefit) for income taxes                    431             829            (997)(5)             263
                                                  ---------       ---------       ---------           ---------

Net income (loss)                                 $  (1,453)      $   1,215       $  (1,663)          $  (1,901)
                                                  ---------       ---------       ---------           ---------
                                                  ---------       ---------       ---------           ---------

Income (loss) per common and preferred share:
         Basic                                    $   (0.19)                                          $   (0.25)
         Diluted                                  $   (0.19)                                          $   (0.25)
Weighted average common shares
  outstanding:
         Basic                                        7,590                                               7,590
         Diluted                                      7,590                                               7,590

</TABLE>

The pro forma combined condensed statement of operations for the nine months 
         ended March 31, 1998 reflects the following acquisition adjustments:

      (1) To record amortization of goodwill over 20 years.
      (2) To record depreciation expense on operating leases purchased.
      (3) To record interest expense for acquisition financing.
      (4) To record the reversal of lease expense on operating leases purchased.
      (5) To record the tax effect on the above entries at estimated 
          effective rates.
 
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