TREX MEDICAL CORP
S-1, 1996-12-24
X-RAY APPARATUS & TUBES & RELATED IRRADIATION APPARATUS
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     As filed with the Securities and Exchange Commission on
     December 23, 1996                           Registration No. 333-
     ---------------------------------------------------------------------

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

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

                                    FORM S-1
                          REGISTRATION STATEMENT UNDER
                           THE SECURITIES ACT OF 1933

                          -----------------------------
                            TREX MEDICAL CORPORATION
             (Exact name of registrant as specified in its charter)

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

               Delaware                3844              06-1439626
           (State or other      (Primary Standard     (I.R.S. Employer
           jurisdiction of         Industrial          Identification
           incorporation or    Classification Code        Number)
            organization)            Number)

                36 Apple Ridge Road, Danbury, Connecticut 06810
                                 (203) 790-1188
         (Address, including zip code, and telephone number, including 
            area code, of registrant's principal executive offices) 

                          -----------------------------
                          SANDRA L. LAMBERT, SECRETARY 
                            TREX MEDICAL CORPORATION 
                        C/O THERMO ELECTRON CORPORATION 
                                81 Wyman Street 
                              Post Office Box 9046 
                       Waltham, Massachusetts 02254-9046 
                                 (617) 622-1000
           (Name, address, including zip code, and telephone number, 
                   including area code, of agent for service) 

                          -----------------------------
                                    Copy to: 
                           SETH H. HOOGASIAN, ESQUIRE
                                 GENERAL COUNSEL
                            TREX MEDICAL CORPORATION
                         C/O THERMO ELECTRON CORPORATION
                                 81 Wyman Street
                              Post Office Box 9046
                        Waltham, Massachusetts 02254-9046
                                 (617) 622-1000

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

          Approximate date of commencement of proposed sale to the public:
     As soon as practicable after this Registration Statement has become
     effective.
PAGE
<PAGE>








        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, 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 of  1933,
     check the  following  box and  list  the Securities  Act  registration
     statement number of the  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 of  1933, 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, check the following box. [ ]

        Title of each                Proposed       Proposed     Amount of
           class of      Amount to    maximum       maximum      registrati
       securities to be     be       offering      aggregate       on fee
          registered    registered   price per      offering
                                     share (1)      price(1)
     Common Stock, $.01   300,000    $14.5625      $4,368,750    $1,323.87
     par value             shs.

     1)   Estimated solely for  the purpose  of calculating  the amount  of
     registration fee.  The calculation  of the proposed maximum  aggregate
     offering price has been based  upon (1) the registration hereunder  of
     an aggregate of 300,000 shares and (2) the average of the high and low
     sales prices, $14.75  and $14.375, respectively,  of the  Registrant's
     Common Stock on the  American Stock Exchange on  December 20, 1996  as
     reported in The Wall Street Journal.
                 -----------------------


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

        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  this Registration Statement  shall become effective  on
     such date as the Commission, acting pursuant to said Section 8(a), may
     determine.


PAGE
<PAGE>







                            Trex Medical Corporation

                             Cross Reference Sheet
                    Between Items of Form S-1 and Prospectus

            Item                         Location in Prospectus
            ----                         ----------------------
         1  Forepart of the
            Registration Statement and
            Outside Front Cover Page of  Outside Front Cover Page
            Prospectus  ................
         2  Inside Front and Outside
            Back Cover Pages of          Inside Front and Outside Back
            Prospectus  ................ Cover Pages; Additional
                                         Information

         3  Summary Information, Risk
            Factors and Ratio of
            Earnings to Fixed Charges  . The Company; Risk Factors
         4  Use of Proceeds ............ Not Applicable
         5  Determination of Offering    Not Applicable
            Price ......................

         6  Dilution ................... Not Applicable
         7  Selling Security Holders ... Selling Shareholders; Sale of
                                         Shares

         8  Plan of Distribution ....... Cover Page; Selling
                                         Shareholders; Sale of Shares
         9  Description of Securities
            to be Registered ........... Cover Page, Description of
                                         Capital Stock
         10 Interests of Named Experts
            and Counsel ................ Experts; Legal Opinions
PAGE
<PAGE>







         11 Information with Respect to
            the Registrant ............. Cover Page; The Company; Risk
                                         Factors; Price Range of Common
                                         Stock; Dividend Policy;
                                         Capitalization; Selected
                                         Financial Information;
                                         Management's Discussion and
                                         Analysis of Financial
                                         Condition and Results of
                                         Operations; Business;
                                         Relationship with Thermo
                                         Electron and Thermo
                                         Instrument; Management;
                                         Security Ownership of Certain
                                         Beneficial Owners and
                                         Management; Description of
                                         Capital Stock; Shares Eligible
                                         for Future Sale; Financial
                                         Statements
         12 Disclosure of Commission
            Position on Indemnification
            for Securities Act           Not Applicable
            Liabilities  ...............
PAGE
<PAGE>







     Information contained herein is subject to completion or amendment.  A
     registration statement relating to these securities has been filed
     with the Securities and Exchange Commission.  These securities may not
     be sold nor may offers to buy be accepted prior to the time the
     registration statement becomes effective.  This prospectus shall not
     constitute an offer to sell or the solicitation of an offer to buy nor
     shall there be any sale of these securities in any State in which such
     offer, solicitation or sale would be unlawful prior to registration or
     qualification under the securities laws of any such State.

                 SUBJECT TO COMPLETION, DATED DECEMBER 23, 1996

     PROSPECTUS
                                 300,000 Shares

                            TREX MEDICAL CORPORATION

                                  Common Stock

        This Prospectus relates to 300,000 shares (the "Shares") of Common
     Stock, par value $.01 per share (the "Common Stock"), of Trex Medical
     Corporation ("Trex Medical" or the "Company").  The Shares may be
     offered by certain shareholders of the Company (the "Selling
     Shareholders") from time to time in transactions on the American Stock
     Exchange, in negotiated transactions, through the writing of options
     on the Shares, or a combination of such methods of sale, at fixed
     prices that may be changed, at market prices prevailing at the time of
     sale, at prices related to such prevailing market prices or at
     negotiated prices.  The Selling Shareholders may effect such
     transactions by selling the Shares to or through broker-dealers, and
     such broker-dealers may receive compensation in the form of discounts,
     concessions or commissions from the Selling Shareholders and/or the
     purchasers of the Shares for whom such broker-dealers may act as agent
     or to whom they sell as principal, or both (which compensation to a
     particular broker-dealer might be in excess of customary commissions).
     The Selling Shareholder and any broker-dealer who acts in connection
     with the sales of Shares hereunder may be deemed to be "underwriters"
     as that term is defined in the Securities Act of 1933, as amended (the
     "Securities Act"), and any commissions received by them and profit on
     any resale of the Shares as principal might be deemed to be
     underwriting discounts and commissions under the Securities Act.  The
     Shares were originally sold by the Company in private placements
     pursuant to certain Stock Purchase Agreements with the Company dated
     December 19, 1996.  See "Selling Shareholders."
                                _______________ 

        The Common Stock offered hereby involves a high degree of risk.
                    See "RISK FACTORS" beginning at page 5.
                                _______________ 


                                        2
PAGE
<PAGE>







          THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE
     SECURITIES AND  EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
     NOR HAS THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES
       COMMISSION PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS.
           ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
                                 _______________

        None of the proceeds from the sale of the Shares by the Selling
     Shareholders will be received by the Company.  The Company has agreed
     to bear all expenses (other than underwriting discounts and selling
     commissions, and fees and expenses of counsel or other advisers to the
     Selling Shareholders) in connection with the registration and sale of
     the Shares being registered hereby.  The Company has agreed to
     indemnify the Selling Shareholders against certain liabilities,
     including liabilities under the Securities Act as underwriter or
     otherwise.

        Trex Medical Corporation is a majority-owned subsidiary of
     ThermoTrex Corporation ("ThermoTrex"), which is a majority-owned
     subsidiary of Thermo Electron Corporation ("Thermo Electron").  The
     Common Stock is traded on the American Stock Exchange under the symbol
     "TXM."  On December 20, 1996, the reported closing price of the Common
     Stock on the American Stock Exchange was $14.75 per share.

               The date of this Prospectus is December  __, 1996.


























                                        3
PAGE
<PAGE>







                                TABLE OF CONTENTS

     The Company  ............................................. 4

     Risk Factors  ............................................ 5

     Price Range of Common Stock  .............................12

     Dividend Policy  .........................................12

     Capitalization  ..........................................13

     Selected Financial Information  ..........................14

     Selected Quarterly Financial Data  .......................16

     Management's Discussion and Analysis of Financial

         Condition and Results of Operations  .................17

     Business  ................................................20

     Relationship and Potential Conflicts with Thermo

         Electron and ThermoTrex  .............................31

     Management  ..............................................35

     Executive Compensation  ..................................40

     Security Ownership of Certain Beneficial Owners 

         and Management  ......................................43

     Selling Shareholders  ....................................46

     Sale of Shares  ..........................................47

     Description of Capital Stock  ............................47

     Shares Eligible for Future Sale  .........................48

     Legal Opinions  ..........................................49

     Experts  .................................................49

     Additional Information  ..................................50

     Index to Financial Statements  ...........................F-1


                                        4
PAGE
<PAGE>







                                  THE COMPANY


        The Company is a  worldwide leader in  the design, manufacture  and
     marketing of mammography equipment and minimally invasive stereotactic
     needle biopsy systems used for the detection of breast cancer, as well
     as a leading designer and manufacturer of general radiography  (X-ray)
     equipment. A  mammography system  is a  dedicated radiographic  system
     designed specifically  to  image breast  tissue.  Stereotactic  needle
     biopsy systems, which use a guided  hollow needle to extract a  sample
     of tissues  from the  breast, offer  a cost-effective,  less  invasive
     alternative to  open  surgery  for the  biopsy  of  suspicious  breast
     lesions. The Company recently broadened its product base by  acquiring
     Bennett X-Ray Corporation ("Bennett"), a leading producer of specialty
     and  general  purpose  radiographic  systems,  including   mammography
     systems, XRE  Corporation ("XRE"),  a  manufacturer of  X-ray  imaging
     systems  used  for   cardiac  catheterization   and  angiography   and
     Continental  X-Ray  Corporation   and  its  affiliates   (collectively
     "Continental") a manufacturer of general purpose radiographic  systems
     and specialty radiographic systems including  radiographic/flouroscopy
     products. 

        The Company was  incorporated in  Delaware in September  1995 as  a
     wholly-owned subsidiary of ThermoTrex. ThermoTrex acquired all of  the
     outstanding shares of capital stock  of Bennett in September 1995  for
     approximately $42,000,000 in cash, net of cash acquired. On October 2,
     1995, the Company acquired  all of the  outstanding shares of  capital
     stock of  Bennett  from  ThermoTrex  in  exchange  for  a  $42,000,000
     principal  amount  subordinated   convertible  note   due  2000   (the
     "Convertible Note"). The Convertible Note bears interest at a rate  of
     4.2% per annum  and is convertible  into shares of  Common Stock at  a
     conversion price  of $11.79  per  share.   As  of November  30 , 1996,
     ThermoTrex  had  converted   $34,000,000  principal   amount  of   the
     Convertible Note for an aggregate of 2,883,798 shares of Common Stock.
     Subsequently, on October 16, 1995,  ThermoTrex contributed all of  the
     assets and liabilities  relating to its  Lorad division ("Lorad")  and
     the development of its Sonic CT system to the Company in exchange  for
     20,000,000 shares of Common Stock of the Company. On May 29, 1996, the
     Company acquired substantially  all of the  assets and liabilities  of
     XRE for approximately $18,500,000  in cash, net  of cash acquired  and
     including the repayment of  debt.  On September  4, 1996, the  Company
     acquired  substantially  all   of  the  assets   and  liabilities   of
     Continental for  approximately  $18.4 million  in  cash, net  of  cash
     acquired and including the repayment of debt.

        Unless  the  context   otherwise  requires,   references  in   this
     Prospectus to the Company  or Trex Medical  Corporation refer to  Trex
     Medical Corporation and  its subsidiaries.  As of  Dec ember 20, 1996
     ThermoTrex beneficially owned 79 % of the Company's outstanding Common
     Stock,  excluding  the  shares  of  Common  Stock  issuable  upon  the
     conversion of  the outstanding  principal  amount of  the  Convertible
                                        5
PAGE
<PAGE>







     Note. The  Company's principal  executive offices  are located  at  36
     Apple Ridge Road,  Danbury, Connecticut, and  its telephone number  is
     (203) 790-1188. 

                                  RISK FACTORS

        An investment in the shares of Common Stock offered hereby involves
     a high degree of  risk. Accordingly, the  following factors should  be
     considered carefully in evaluating the Company and its business before
     purchasing any of such shares. 

        Technological Change and New Products.  The market for the Company's
        -------------------------------------
     products is  characterized  by  rapid  and  significant  technological
     change, evolving  industry standards  and new  product  introductions.
     Many of  the Company's  products are  technologically innovative,  and
     require significant planning, design, development, and testing at  the
     technological,  product,  and  manufacturing  process  levels.   These
     activities require significant capital  commitments and investment  by
     the Company. The high cost  of technological innovation is matched  by
     the rapid and  significant change  in the  technologies governing  the
     products that are  competitive in  the Company's  market, by  industry
     standards that may change on short  notice and by the introduction  of
     new products and technologies such  as magnetic resonance imaging  and
     ultrasound,  which  may  render  existing  products  and  technologies
     uncompetitive  or  obsolete.  There  can  be  no  assurance  that  the
     Company's  products  or  proprietary  technologies  will  not   become
     uncompetitive or obsolete.

        Dependence on Patents  and Proprietary  Rights .     The Company  places
        ----------------------------------------------
     considerable  importance  on   obtaining  patent   and  trade   secret
     protection for significant new  technologies, products, and  processes
     because of the length of time and expense associated with bringing new
     products through the development  and regulatory approval process  and
     to the marketplace. The Company's  success depends in part on  whether
     it can  develop  patentable products  and  obtain and  enforce  patent
     protection for its  products both in  the United States  and in  other
     countries. The Company has filed, and intends to file, applications as
     appropriate for patents covering  both its products and  manufacturing
     processes. No assurance can be given that patents will issue from  any
     pending or future patent  applications owned by,  or licensed to,  the
     Company, or that the claims allowed  under any issued patents will  be
     sufficiently broad to protect  the Company's technology. In  addition,
     no assurance  can  be given  that  any  issued patents  owned  by,  or
     licensed to,  the  Company will  not  be challenged,  invalidated,  or
     circumvented, or  that  the  rights granted  thereunder  will  provide
     competitive  advantages  to  the  Company.  The  Company  could  incur
     substantial costs in defending itself  in suits brought against it  or
     in suits in  which the Company  may assert its  patent rights  against
     others. If the outcome  of any such litigation  is unfavorable to  the
     Company, the Company's  business and  results of  operations could  be
     materially adversely affected.
                                        6
PAGE
<PAGE>








        The Company relies on  trade secrets and proprietary  know-how that
     it seeks to protect, in  part, by confidentiality agreements with  its
     collaborators, employees, and consultants.  There can be no  assurance
     that these agreements  will not  be breached, that  the Company  would
     have adequate remedies  for any  breach, or that  the Company's  trade
     secrets will not otherwise become known or be independently  developed
     by competitors.

        Risks Associated With Pending and Threatened  Patent Litigation.   In
        ---------------------------------------------------------------
     April  1992,  Fischer  Imaging  Corporation  ("Fischer")  commenced  a
     lawsuit in the  United States  District Court,  District of  Colorado,
     against the  Company's Lorad  division,  alleging that  Lorad's  prone
     breast-biopsy  system  infringes  a  Fischer  patent  on  a  precision
     mammographic needle-biopsy  system.  As  of September  28,  1996,  the
     Company had  recognized  aggregate  revenues  of  approximately  $63.1
     million from sales of such systems, of which $34.4 million  represents
     sales prior  to  October  1,  1995.  The  suit  requests  a  permanent
     injunction, treble damages, and attorneys'  fees and expenses. If  the
     Company is unsuccessful in defending this lawsuit, it may be  enjoined
     from manufacturing and selling its such systems without a license from
     Fischer. No assurance can  be given that the  Company will be able  to
     obtain such a license, if required, on commercially reasonable  terms,
     if at all. In addition, the Company may be subject to damages for past
     infringement. No assurance can be given as to whether the Company will
     be subject to such damages or, if  so, the amount of damages that  the
     Company may be required to pay.

        The Company  also is  aware  of a  U.S.  patent held  by Nicola  E.
     Yanaki, which  has  been asserted  by  him against  certain  automatic
     exposure-control features included  in most of  the Company's  current
     mammography systems.  The Company has been informed by Mr. Yanaki that
     a competitor of  the Company has  obtained a license  for use of  this
     patent. If Mr. Yanaki  were successful in  enforcing such patent,  the
     Company could be subject to damages for past infringement and enjoined
     from manufacturing  and selling  imaging equipment  utilizing  certain
     automatic exposure-control features.

        The Company  is  also  aware  of  an issued  European  patent  with
     counterparts  in  other  non-U.S.  countries  applicable  to   imaging
     equipment utilizing certain  automatic exposure-control features.  The
     European patent is the subject of an opposition proceeding before  the
     European Patent Office. There can be no assurance as to the outcome of
     such opposition.

        In connection  with  the organization  of  the Company,  ThermoTrex
     agreed to  indemnify the  Company  for any  and  all cash  damages  in
     connection with the Fischer  lawsuit and any  potential claims by  Mr.
     Yanaki with respect to sales of the Company's products occurring prior
     to October  1995,  when  the  businesses of  Lorad  and  Bennett  were
     transferred to the Company. Notwithstanding this indemnification,  the
                                        7
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<PAGE>







     Company would be  required to report  as an expense  the full  amount,
     including any reimbursable  amount, of  any damages in  excess of  the
     amount accrued as  of September 28,  1996 (approximately $2  million),
     with any  indemnification payment  it receives  from ThermoTrex  being
     treated as a contribution to shareholders' investment.

        The Company is  also aware of  two U.S.  patents owned by  a former
     employee that have been asserted  against the Company relating to  its
     high-transmission cellular  ("HTC")(TM)  grid  to  be  used  with  its
     mammography  systems.  If  the  former  employee  were  successful  in
     enforcing such patents, the  Company could be  subject to damages  and
     enjoined from manufacturing and selling the HTC grid.

        The unfavorable outcome of any  one or more of  the above described
     matters could have a material adverse effect on the Company's business
     and results of operations. The Company's competitors and other parties
     hold other various patents  and patent applications  in the fields  in
     which the Company operates. There can be no assurance that the Company
     will not be found  to have infringed third-party  patents and, in  the
     event of such infringement, the Company could be required to alter its
     products or processes, pay licensing fees, or cease making and selling
     any infringing products and pay damages for past infringement.

        No Assurance of Development and Commercialization of Products Under
        -------------------------------------------------------------------
     Development.  A  number  of  the  Company's  potential  products are
     -----------
     currently under  development.  There  are a  number  of  technological
     challenges that the Company must successfully address to complete  any
     of its development efforts. Product development involves a high degree
     of risk,  and  returns  to investors  are  dependent  upon  successful
     development and commercialization of such products. Proposed  products
     based  on  the   Company's  technologies   will  require   significant
     additional research and  development. There can  be no assurance  that
     any of the products currently being developed by the Company, or those
     to be developed in the future by the Company, will be  technologically
     feasible or accepted by the  marketplace, or that any such development
     will be completed in any particular time frame.

        Risks Associated with Acquisition Strategy .   The Company's strategy
        ------------------------------------------
     includes  the  acquisition   of  businesses   and  technologies   that
     complement or  augment  the  Company's  existing  product  lines.  For
     example, in October 1995, the Company acquired its Bennett subsidiary;
     in May 1996, the Company acquired substantially all of the assets  and
     liabilities of XRE, a  manufacturer of X-ray  imaging systems used  in
     the diagnosis  and  treatment of  coronary  artery disease  and  other
     vascular conditions;  and  in  September 1996,  the  Company  acquired
     substantially all  of the  assets and  liabilities of  Continental,  a
     manufacturer of radiographic fluoroscopy products, general radiography
     systems, electrophysiology products and dedicated mammography systems.
     Promising acquisitions are  difficult to identify  and complete for  a
     number of reasons, including competition among prospective buyers  and
     the need  for  regulatory approvals,  including  antitrust  approvals.
                                        8
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<PAGE>







     There can be no  assurance that the Company  will be able to  complete
     future acquisitions or that the  Company will be able to  successfully
     integrate  any  acquired   businesses.  In  order   to  finance   such
     acquisitions, it may be necessary for the Company to raise  additional
     funds through  public  or  private  financings.  Any  equity  or  debt
     financing, if available at all, may be on terms that are not favorable
     to the Company  and, in the  case of equity  financing, may result  in
     dilution to the Company's stockholders.

        Intense Competition.  The Company encounters and expects to continue
        -------------------
     to encounter  intense competition  in the  sale of  its products.  The
     Company believes that the principal competitive factors affecting  the
     market for its products include product features, product  performance
     and reputation, price, and service. The Company's competitors  include
     large multinational corporations and their operating units,  including
     the GE  Medical Systems  Division of  General Electric  Company,  Inc.
     ("GE"),  the    Philips  Medical  Systems  of  North  Americ   Company
     subsidiary  of  Philips  N.V.  ("Philips"),  the  Siemens  Corporation
     subsidiary  of  Siemens  AG  ("Siemens"),  Toshiba  American   Medical
     Systems, Inc. and Toshiba America MRI, Inc. (collectively, "Toshiba"),
     Shimadzu, and the Picker International,  Inc. subsidiary of GEC,  Inc.
     ("Picker International"). These companies and certain of the Company's
     other competitors have substantially greater financial, marketing, and
     other resources than  the Company. As  a result, they  may be able  to
     adapt more  quickly to  new or  emerging technologies  and changes  in
     customer requirements, or to devote greater resources to the promotion
     and sale of their products  than the Company. Moreover, a  significant
     portion of  the Company's  sales  are to  the United  States  Surgical
     Corporation  ("U.S.   Surgical"),   GE,  and   Philips   through   OEM
     arrangements. The products  sold by  such OEM  customers compete  with
     products  offered  by  the   Company  and  its  independent   dealers.
     Competition could increase  if new  companies enter the  market or  if
     existing competitors expand their  product lines or intensify  efforts
     within existing  product lines.  There can  be no  assurance that  the
     Company's current products, products under development, or ability  to
     discover new technologies will be  sufficient to enable it to  compete
     effectively with its competitors.

        Government Regulation,  No Assurance  of  Regulatory Approval .  The
        -------------------------------------------------------------
     Company's products are subject to regulation by the U.S. Food and Drug
     Administration (the FDA) and equivalent agencies in foreign countries.
     Failure to comply with  applicable regulatory requirements can  result
     in, among  other  things, civil  and  criminal fines,  suspensions  of
     approvals, recalls of  products, seizures,  injunctions, and  criminal
     prosecutions.

        To date, all of the Company's products have  been classified by the
     FDA as  Class  II medical  devices  and  have been  eligible  for  FDA
     marketing  clearance   pursuant   to  the   FDA's   510(k)   premarket
     notification  process,  which  is  generally  shorter  than  the  more
     involved premarket approval (PMA)  process. The Company believes  that
                                        9
PAGE
<PAGE>







     most of  its currently  anticipated  future products  and  substantial
     modifications to existing  products will  be eligible  for the  510(k)
     premarket  notification  process.  However,   the  FDA  has  not   yet
     classified full-breast  digital mammography  systems such  as the  one
     being developed  by the  Company. If  such systems  are classified  as
     Class III  devices, the  Company would  be required  to file  for  FDA
     marketing clearance  for its  full-breast digital  mammography  system
     under the  PMA process,  which  would require  substantial  additional
     clinical trials and post-market follow-up for a number of years. While
     not classifying such systems, the FDA recently issued a final guidance
     document  relating  to  the   protocol  for  marketing  clearance   of
     full-breast digital mammography systems.  This document suggests  that
     clearance may be obtained through an enhanced 510(k) application  with
     more extensive clinical trials.  The protocol set  forth in the  final
     guidance document calls for clinical  trials on 520 subjects prior  to
     applying to  the  FDA for  clearance  to commercially  market  such  a
     system. In addition, full-breast  digital mammography systems will  be
     subject to alternate quality assurance standards under the Mammography
     Quality Standards Act. These alternate standards will be submitted  by
     the Company to the FDA for review. The Company can make no  prediction
     as to when the FDA will approve  such standards, if at all. There  can
     be no assurance that full-breast digital mammography systems will  not
     be classified by the FDA as  Class III medical devices subject to  the
     PMA process. In addition, there can be no assurance that the necessary
     clearances for any  of the Company's  products will be  obtained on  a
     timely basis, if at all. 

        FDA regulations also  require manufacturers  of medical  devices to
     adhere to certain "Good Manufacturing Practices" (GMP), which  include
     testing, quality control, and documentation procedures. The  Company's
     manufacturing facilities  are subject  to periodic  inspection by  the
     FDA. No assurances can be  given that the FDA  will not in the  future
     find the Company to be in violation of one or more such regulations.

        Healthcare  Reform;  Uncertainty  of   Patient  Reimbursement .
 
    The Federal government has in the past,  and may in the future,  consider,
     and certain state and local as well as a number of foreign governments
     are considering or have adopted, healthcare policies intended to  curb
     rising  healthcare   costs.  Such   policies  include   rationing   of
     government-funded reimbursement for  healthcare services and  imposing
     price controls upon  providers of medical  products and services.  The
     Company  cannot  predict   what  healthcare   reform  legislation   or
     regulation, if any, will be enacted in the United States or elsewhere.
     Significant changes in the healthcare systems in the United States  or
     elsewhere are likely  to have a  significant impact over  time on  the
     manner in which the  Company conducts its  business. In addition,  the
     federal  government  regulates  reimbursement      of  fees  for  certain
     diagnostic  examinations  and  capital  equipment  acquisition   costs
     connected with services to Medicare beneficiaries. Recent  legislation
     has limited Medicare reimbursement for diagnostic examinations.  These
     policies  may  have  the  effect  of  limiting  the  availability   or
                                       10
PAGE
<PAGE>







     reimbursement for certain procedures, and  as a result may inhibit  or
     reduce demand by healthcare providers  for products in the markets  in
     which the  Company competes.  While the  Company cannot  predict  what
     effect the  policies  of government  entities  and other  third  party
     payors will have on future sales of the Company's products, there  can
     be no assurance that such policies would not have an adverse impact on
     the operations of the Company.

        Dependence  Upon  Significant  OEM   Relationships  .  A   significant
        --------------------------------------------------
     portion of the Company's sales are  to  U.S. Surgical, GE, and Philips
     through OEM arrangements. The Company's sales depend, in part, on  the
     continuation of these OEM arrangements and the level of end-user sales
     by such OEMs. There can be no assurance that the Company will be  able
     to maintain its existing, or establish new, OEM relationships.

        Potential Product Liability  .    The Company's business  exposes it to
        ---------------------------
     potential  product  liability  claims,  which  are  inherent  in   the
     manufacturing, marketing, and sale of medical devices, and as such the
     Company  may  face  substantial  liability  to  patients  for  damages
     resulting from  the  faulty design  or  manufacture of  products.  The
     Company currently maintains product-liability insurance, but there can
     be no assurance that this  insurance will provide sufficient  coverage
     in the event of  a claim, that  the Company will  be able to  maintain
     such  coverage   on  acceptable   terms,  if   at  all,   or  that   a
     product-liability claim  would  not materially  adversely  affect  the
     business or financial condition of the Company.

        Risks Associated With International Operations. International sales
        ----------------------------------------------
     accounted for 22%, 21%,  and 14% of the  Company's revenues in  fiscal
     1996, fiscal  1995, and  1994, respectively.  The Company  intends  to
     continue  to   expand   its   presence   in   international   markets.
     International revenues are subject to a number of risks, including the
     following: agreements  may be  difficult  to enforce  and  receivables
     difficult to collect through a foreign country's legal system; foreign
     customers may have longer payment cycles; foreign countries may impose
     additional withholding taxes  or otherwise tax  the Company's  foreign
     income, impose tariffs or adopt  other restrictions on foreign  trade;
     U.S. export licenses may be difficult to obtain; and the protection of
     intellectual property in  foreign countries may  be more difficult  to
     enforce.

        Control by ThermoTrex.   The Company's stockholders do not have the
        ---------------------
     right to cumulate  votes for  the election  of directors.  ThermoTrex,
     which owns 79% of the outstanding Common Stock of the Company, has the
     power to elect  the entire Board  of Directors of  the Company and  to
     approve or disapprove any corporate actions submitted to a vote of the
     Company's stockholders. See "Relationship  and Potential Conflicts  of
     Interest with Thermo Electron and ThermoTrex" and " Security Ownership
     of Certain Beneficial Owners and Management." 


                                       11
PAGE
<PAGE>







        Potential Conflicts of Interest   .
  The  Company may be subject to potential conflicts of interest from time
     to time as a result of  its
     relationship  with  Thermo  Electron  and  ThermoTrex.  For   example,
     conflicts may  arise  in  the development  and  licensing  of  digital
     detector technology by ThermoTrex to  the Company, the manufacture  of
     digital detectors  by  ThermoTrex for  sale  to the  Company  and  the
     Company's manufacturing of lasers for sale to ThermoLase  Corporation.
     See "     Relationship and  Potential Conflicts  of  Interest with  Thermo
     Electron and ThermoTrex."  Certain officers  of the  Company are  also
     officers of ThermoTrex, Thermo  Electron and/or other subsidiaries  of
     Thermo Electron, and are full-time  employees of ThermoTrex or  Thermo
     Electron. Such officers will  devote only a  portion of their  working
     time to the affairs of the Company. For financial reporting  purposes,
     the Company's  financial  results  are included  in  the  consolidated
     financial statements of ThermoTrex and Thermo Electron. The members of
     the Board of  Directors of the  Company who are  also affiliated  with
     Thermo Electron or  ThermoTrex will consider  not only the  short-term
     and the long-term impact  of operating decisions  on the Company,  but
     also the  impact  of  such decisions  on  the  consolidated  financial
     results of  ThermoTrex  and Thermo  Electron.  In some  instances  the
     impact of such decisions could be disadvantageous to the Company while
     advantageous to  ThermoTrex or  Thermo Electron,  or vice  versa.  The
     Company is a party to various agreements with Thermo Electron that may
     limit the  Company's  operating  flexibility.  See  " Relationship and
     Potential Conflicts of Interest with Thermo Electron and ThermoTrex." 

        Significant Additional  Shares  Eligible for  Future  Sale  .
        ----------------------------------------------------------
  The 22,883,798 shares  of Common  Stock owned  by ThermoTrex  will  become
     eligible for  resale under  Rule  144 in  October 1997.  In  addition,
     subject to certain limitations described below under "Shares  Eligible
     For Future Sale," as long as ThermoTrex is able to elect a majority of
     the Company's Board of  Directors, it will have  the ability to  cause
     the Company at any time to register for resale all or a portion of the
     Common Stock owned by ThermoTrex. 

        Additional shares of Common Stock issuable upon exercise of options
     granted under the Company's stock-based compensation plans will become
     available for future sale  in the public  market at prescribed  times.
     Sales of a significant number of shares of Common Stock in the  public
     market could adversely affect  the market price  of the Common  Stock.
     See "Relationship  and Potential  Conflicts  of Interest  with  Thermo
     Electron and ThermoTrex" and  "Shares Eligible for Future Sale."
      
        Potential Volatility of Stock Price  .    Since public trading  of the
        -----------------------------------
     Company's Common Stock commenced  in June 1996,  the market price  has
     fluctuated considerably,  and  it may  continue  to fluctuate  in  the
     future.   Factors  such as  fluctuations  in the  Company's  operating
     results, announcements of technological  innovations or new  contracts
     or products by the Company  or its competitors, government  regulation
     and approvals, developments in patent or other proprietary rights  and

                                       12
PAGE
<PAGE>







     market conditions for stocks of companies similar to the Company could
     have a significant impact on the market price of the Common Stock. 

        Lack  of  Dividends        .             The  Company  anticipates  that
        -------------------
     foreseeable future the  Company's earnings, if  any, will be  retained
     for use in the business and that no cash dividends will be paid on the
     Common Stock. Declaration of dividends on the Common Stock will depend
     upon, among other things, future earnings, the operating and financial
     condition  of  the  Company,  its  capital  requirements  and  general
     business conditions. See "Dividend Policy." 


                           PRICE RANGE OF COMMON STOCK

        The Company's Common Stock has been publicly traded on the
     American Stock Exchange since June 27, 1996.  The following sets
     forth, for the calendar period indicated, the high and low sales
     prices on the American Stock Exchange.

                                             High      Low
                                             ----      ---
     Fiscal 1996
     -----------
     Third Quarter 
     (June 27, 1996 through June 28, 1996)   $19.25    $15.375

     Fourth Quarter                          $26.00    $17.875

     Fiscal 1997
     -----------
     First Quarter 
     (through December 20, 1996)             $20.25    $14.375

        As of December 20, 1996, there were approximately 830 record
     holders of Common Stock.


                                 DIVIDEND POLICY

        The  Company  anticipates  that  for  the  foreseeable  future  the
     Company's earnings, if any, will be  retained for use in the  business
     and that no cash dividends will be paid on the Common Stock. 












                                       13
PAGE
<PAGE>





                                 CAPITALIZATION

         The following table sets forth the capitalization of the Company as
    of September 28, 1996 and as adjusted to reflect the issuance and sale by
    the Company of 300,000 shares of Common Stock at $14.50 per share on
    December 19, 1996, for net proceeds of $4,215,000, after deducting
    placement agent commissions and estimated offering expenses payable by
    the Company.

                                                       September 28, 1996
                                                     ----------------------
                                                       Actual   As Adjusted
                                                     --------   -----------
                                                     (In thousands, except
                                                          share amounts)

    Long-term Obligations:
      Subordinated convertible note, due to
        parent company                               $  8,000     $  8,000
      Other                                               109          109
                                                     --------     --------

                                                        8,109        8,109
                                                     --------     --------

    Shareholders' Investment:
      Common stock, $.01 par value, 50,000,000
        shares authorized; 28,592,630 shares
        issued and outstanding and 28,892,630
        shares as adjusted (1)                            286          289
      Capital in excess of par value                  139,667      143,879
      Retained earnings                                 9,344        9,344
                                                     --------     --------

        Total Shareholders' Investment                149,297      153,512
                                                     --------     --------

          Total Capitalization (Long-term
            Obligations and Shareholders'
            Investment)                              $157,406     $161,621
                                                     ========     ========
    ____________________
    (1)
    Does not include 1,925,000 shares  of Common Stock reserved for  issuance
    under the Company's stock-based compensation plans and 678,541 shares  of
    Common Stock reserved  for issuance  upon conversion  of the  outstanding
    principal amount of the Convertible  Note. Options to purchase  1,655,500
    shares of Common Stock were  outstanding under the Company's  stock-based
    compensation plans as of December 13, 1996. See  "Managment--Compensation
    of Directors" and "Executive Compensation" and Notes 4 and 5 of Notes  to
    Consolidated Financial Statements.


    


                                      SELECTED FINANCIAL INFORMATION
<TABLE>

    The selected financial information below as of and for the fiscal years ended 
September 30, 1995, and for the fiscal year ended December 31, 1994 has been deriv
Consolidated Financial Statements, which have been audited by Arthur Andersen LLP,
accountants, as indicated in their report included elsewhere in this Prospectus. T
information as of and for the fiscal year ended January 1, 1994 and as of December
derived from the Company's Consolidated Financial Statements which have been audit
LLP, but have not been included in this Prospectus. The selected financial informa
year ended January 2, 1993, and the twelve months ended September 30, 1995 has not
the opinion of the Company, includes all adjustments (consisting only of normal, r
necessary to present fairly such information in accordance with generally accepted
applied on a consistent basis.

<CAPTION>
                                                       Nine Months
                                  Year Ended (1)          Ended
                              ----------------------
                              Sept. 28,    Sept. 30,    Sept. 30,              Fis
                                                                     -------------
                               1996 (5)    1995 (2,4)  1995 (1,2,4)       1994
                              ----------------------------------------------------
                                                (In thousands, except per share amo
                                 <C>           <C>         <C>          <C>
Statement of Income Data:
Revenues                       $150,195     $ 70,505     $ 55,291     $ 54,410
                               --------     --------     --------     --------
Costs and Operating Expenses:
  Cost of revenues               86,642       36,320       28,180       27,794
  Selling, general and
    administrative expenses      27,156       15,652       12,174       13,272
  Research and development
    expenses                     18,862       11,937        8,595       10,662
                               --------     --------     --------     --------

                                132,660       63,909       48,949       51,728
                               --------     --------     --------     --------

Operating Income (Loss)          17,535        6,596        6,342        2,682
Interest and Other Income
  (Expense), Net                    (23)          11           22          (22)
                               --------     --------     --------     --------
Income (Loss) Before Income
  Taxes                          17,512        6,607        6,364        2,660
Income Tax Provision (Benefit)    8,168        3,015        2,881        1,466
                               --------     --------     --------     --------
Net Income (Loss)              $  9,344     $  3,592     $  3,483     $  1,194
                               ========     ========     ========     ========

</TABLE>
PAGE
<PAGE>

                              SELECTED FINANCIAL INFORMATION -- (Continued)
<TABLE>

<CAPTION>
                                                       Nine Months
                                  Year Ended (1)          Ended
                              ----------------------
                              Sept. 28,    Sept. 30,    Sept. 30,              Fis
                                                                     -------------
                               1996 (5)    1995 (2,4)  1995 (1,2,4)       1994
                              ----------------------------------------------------
                                                (In thousands, except per share amo
                                <C>           <C>           <C>          <C>      
Earnings (Loss) per
  Share (6):
    Primary                    $    .40     $    .18     $    .17     $    .06
                               ========     ========     ========     ========
    Fully diluted              $    .38     $    .18     $    .17     $    .06
                               ========     ========     ========     ========
Weighted Average Shares (6):
    Primary                      23,483       20,151       20,151       20,151
                               ========     ========     ========     ========
    Fully diluted                26,550       20,151       20,151       20,151
                               ========     ========     ========     ========
Balance Sheet Data
  (at end of period):
Working Capital                $ 59,834                  $ 13,171     $  8,584
Total Assets                    200,850                   102,374       48,000
Long-term Obligations             8,109                         -            -
Shareholders' Investment        149,297                    80,010       37,033
____________________
(1) All periods presented include ThermoTrex's research and development business p
    CT system.
(2) In September 1995, the Company changed its fiscal year-end from the Saturday n
    the Saturday nearest September 30. Accordingly, the Company's transition perio
    to September 30, 1995 ("fiscal 1995") is presented. The unaudited data for the
    September 30, 1995 is presented for comparative purposes only.
(3) Includes the results of Lorad since its acquisition by ThermoTrex in November
(4) Includes the results of Bennett since its acquisition by ThermoTrex in Septemb
(5) Reflects the May 1996 and September 1996 acquisitions of XRE and Continental, 
    net proceeds of the Company's private placements in November 1995 and January 
    offering in July 1996.
(6) Pursuant to Securities and Exchange Commission requirements, earnings (loss) p
    presented for all periods. Weighted average shares for all periods include the
    issued to ThermoTrex in connection with the initial capitalization of the Comp
    the assumed exercise of stock options issued within one year prior to the Comp
    offering.
</TABLE>








                                       14
PAGE
<PAGE>





                  SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)

                                        Fiscal 1996

                           First      Second    Third (1) Fourth (2)
                          Fourth (2)                      Fourth (2)
                          (in thousands, except per share amounts)

     Revenues               $32,509    $34,320   $36,681     $46,685
     Gross Profit            14,261     14,976    15,961      18,355

     Net Income               1,626      2,108     2,169       3,441
     Earnings per share
           Primary             0.08       0.10      0.10        0.12

           Fully               0.08       0.09      0.09        0.12
                                      Fiscal 1995 (3)

                           First      Second    Third (4)
                          (in thousands, except per share amounts)

     Revenues               $16,101    $17,197   $21,993 
     Gross Profit             8,116      8,575    10,420 

     Net Income                 857      1,344     1,282 
     Earnings per share        0.04       0.07      0.06 
                                        Fiscal 1994

                           First      Second      Third     Fourth
                          (in thousands, except per share amounts)

     Revenues               $11,886    $13,214   $14,096     $15,214

     Gross Profit             6,115      6,542     6,885       7,074
     Net Income                 354        329       402         109

     Earnings per share        0.02       0.02      0.02        0.01

    (1)  Reflects the acquisition of XRE in May 1996.
    (2)  Reflects the acquisition of Continental in September 1996.
    (3)  In September 1995, the Company changed its fiscal year end from the
         Saturday nearest December 31 to the Saturday nearest September 30.
         Accordingly, the Company's 39-week transition period ended
         September 30, 1995 is presented.
    (4)  Includes the results of Bennett since its acquisition by ThermoTrex
         in September 1995.











                                       17
PAGE
<PAGE>





                      MANAGEMENT'S DISCUSSION AND ANALYSIS
                OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

    Overview

      The Company designs,  manufactures, and markets  mammography equipment
    and  minimally  invasive  stereotactic  breast-biopsy  systems,   general
    radiography (X-ray) equipment, and X-ray imaging systems used for cardiac
    catheterization and angiography, as well as radiographic fluoroscopy. The
    Company sells  its systems  worldwide principally  through a  network  of
    independent dealers. In  addition, the  Company manufactures  mammography
    and radiography systems as an  original equipment manufacturer (OEM)  for
    other medical equipment companies such as  U.S. Surgical,  GE  and  Philips.
    The  Company  has  four  operating   units:  Lorad,  a  manufacturer   of
    mammography  and   stereotactic   breast-biopsy   systems;   Bennett  ,  a
    manufacturer  of  general  X-ray   and  mammography  equipment;  XRE  ,  a
    manufacturer of X-ray imaging systems used in the diagnosis and treatment
    of  coronary   artery  disease   and  other   vascular  conditions;   and
    Continental, a  manufacturer  of general-purpose  and  specialized
    X-ray systems.

      The Company conducts all of its manufacturing operations in the United
    States  and  sells  its  products  on  a  worldwide  basis.  The  Company
    anticipates that an increasing  percentage of its  revenues will be  from
    export sales. The Company's export sales are denominated in U.S. dollars;
    therefore,  neither  its  revenue  nor  its  earnings  are  significantly
    affected by exchange rate fluctuations.

    Results of Operations

      In September 1995, the  Company changed its  fiscal year end  from the
    Saturday nearest  December  31  to the  Saturday  nearest  September  30.
    Accordingly, the results of operations  for 1996 compares the year  ended
    September 28, 1996 (fiscal 1996) with the unaudited year ended  September
    30, 1995 (1995).  The results of  operations for 1995  compares the  nine
    months ended September  30, 1995  (fiscal 1995) with  the unaudited  nine
    months ended October 1, 1994 (fiscal 1994).

    Fiscal 1996 Compared With 1995
    ------------------------------

      Revenues increased 113%  to $150.2 million  in fiscal 1996  from $70.5
    million in 1995. Revenues increased $56.2 million due to the acquisitions
    of Bennett, XRE, and Continental.

      Revenues at  Lorad  increased  35%  in  fiscal  1996     as  a  result of
    increased demand  for  mammography, biopsy,  and  nondestructive  testing
    (NDT) systems, and lasers sold to ThermoLase Corporation  ("ThermoLase"),
    a majority-owned subsidiary of ThermoTrex.

      Under an OEM agreement with U.S. Surgical entered into in fiscal 1996,
    Lorad has agreed to  manufacture biopsy systems for  U.S. Surgical to  be
    marketed and sold under the U.S. Surgical product name of Advanced Breast
    Biopsy Instrument (ABBI). In fiscal 1996, sales to U.S. Surgical  totaled
    $16.9 million.


                                       18
PAGE
<PAGE>





      The gross profit margin  declined to 42%  in fiscal 1996, from  48% in
    1995, due primarily to the inclusion of lower-margin revenues at  Bennett
    and XRE.

      Selling, general  and  administrative  expenses  as  a  percentage  of
    revenues decreased to 18% in fiscal 1996 from 22% in 1995, due  primarily
    to increased revenues  at Lorad and  the inclusion of  the operations  of
    Bennett and  XRE,  which  incurred  lower expenses  as  a  percentage  of
    revenues. Research and development expenses increased to $18.9 million in
    fiscal 1996 from  $11.9 million  in 1995, due  to the  inclusion of  $4.2
    million of expense at Bennett and XRE and the Company's continued efforts
    to develop and  commercialize new products  including the Company's  M-IV
    mammography system (first shipped in the fourth quarter of fiscal  1996),
    full-breast  digital  mammography  system,  and  direct-detection   X-ray
    sensor, as  well as  enhancements of  existing systems.  Under a  license
    agreement between the Company  and ThermoTrex, the  Company may elect  to
    expend approximately $2.0 million each  year during fiscal 1997 and  1998
    for additional research and development and to expand the field of use in
    which it is entitled to use ThermoTrex's direct-detection digital imaging
    technology.  See Note 9 of Notes to Consolidated Financial Statements.

      Interest income in  fiscal 1996  primarily represents  interest income
    earned on the invested proceeds from the Company's private placements  of
    common stock  in  November 1995  and  January 1996,  and  initial  public
    offering in  July  1996.  Interest  expense  in  fiscal  1996  represents
    interest  associated  with  the  $42.0  million  principal  amount   4.2%
    subordinated convertible note  issued to  ThermoTrex in  October 1995  in
    connection with the Bennett  acquisition. As of  September 28, 1996,  the
    outstanding balance of this note was $8.0 million, due to the  conversion
    by ThermoTrex of $34.0 million principal amount.

      The effective tax rate  was 47% in  fiscal 1996, compared with  46% in
    1995. The effective  tax rates  exceed the statutory  federal income  tax
    rate due primarily to the impact of state income taxes and  nondeductible
    amortization of cost in excess of net assets of acquired companies.

      The Company is a defendant  in certain patent litigation  and has been
    notified that it allegedly infringes certain other technologies owned  by
    third parties.      See Notes 3  and 11    of Notes to  Consolidated
    Financial
    Statements . While an unfavorable outcome of one or more of these  matters
    could have  a  material  adverse  effect  on  the  Company's  results  of
    operations, the Company  does not  believe that it  is  reasonably likely
    that any  resolution  would  have  a material  effect  on  the  Company's
    financial position.

    Fiscal 1995 Compared With Fiscal 1994
    -------------------------------------

      Revenues increased  41% to  $55.3 million  in fiscal  1995 from  $39.2
    million in fiscal 1994. The  increase resulted from higher demand  across
    all product  lines, with  significant  growth coming  from  international
    sales through the  Company's OEM  agreement with  Philips. Revenues  from
    Philips were $9.8 million in fiscal  1995, compared with $4.1 million  in
    fiscal 1994. Export sales accounted for 21% of the Company's revenues  in
    fiscal 1995, compared with 11% in fiscal 1994.


                                       19
PAGE
<PAGE>





      The gross profit  margin declined to  49% in  fiscal 1995 from  50% in
    fiscal 1994,  due  to  an  adjustment to  expense  of  $0.3  million  for
    inventory revalued at the time of Bennett's acquisition.

      Selling, general  and  administrative  expenses  as  a  percentage  of
    revenues decreased to  22% in fiscal  1995 from 25%  in fiscal 1994,  due
    primarily  to  increased  revenues.  Research  and  development  expenses
    increased to $8.6  million in  fiscal 1995  from $7.3  million in  fiscal
    1994,  reflecting  the  Company's   continued  efforts  to  develop   and
    commercialize the  full-breast digital  mammography  system, as  well  as
    enhancements of existing systems.

      The effective tax rate  was 45% in  fiscal 1995, compared with  55% in
    fiscal 1994. The effective tax rates exceed the statutory federal  income
    tax  rate  due  primarily  to  the  impact  of  state  income  taxes  and
    nondeductible amortization of cost  in excess of  net assets of  acquired
    companies. The decrease in the effective  tax rate in 1995 resulted  from
    the lower relative impact of nondeductible amortization of cost in excess
    of net assets of acquired companies and state income taxes.

    Liquidity and Capital Resources

      Consolidated working capital was $59.8 million  at September 28, 1996,
    compared with $13.2 million  at September 30,  1995. Included in  working
    capital are cash and cash equivalents  of $34.0 million at September  28,
    1996 and  $0.2  million at  September  30,  1995. Net  cash  provided  by
    operating activities was $6.0 million in fiscal 1996. In fiscal 1996, the
    Company funded an  increase in  accounts receivable of  $7.7 million  due
    primarily  to  September  1996  shipments  of  the  Company's  new   M-IV
    mammography system.

      The Company expended $3.1 million on purchases  of property, plant and
    equipment during fiscal 1996. The Company expects to expend approximately
    $6.0 million for purchases of property, plant and equipment during fiscal
    1997.

      In connection  with  the  October  1995  acquisition of  Bennett,  the
    Company issued to  ThermoTrex a  $42.0 million  principal amount  4.2%   
    subordinated convertible note. During  fiscal 1996, ThermoTrex  converted
    $34.0 million principal  amount into  2,883,798 shares  of the  Company's
    common stock.

      In May 1996, the Company acquired substantially all  of the assets and
    liabilities of XRE for approximately $18.5  million in cash, net of  cash
    acquired and  including the  repayment of  debt.   In September  1996, the
    Company acquired  substantially  all of  the  assets and  liabilities  of
    Continental for approximately $18.4 million in cash, net of cash acquired
    and including the repayment of debt.

      In  November  1995,  January  1996  and  December  1996,  the  Company
    completed private placements of 1,862,000,  100,000 and 300,000 shares of
    its common stock  for net  proceeds of  $17.6 million,   $1.1 million  and
    $4,215,000, respectively. In July 1996, the Company sold 2,875,000 shares
    of its common stock in an initial public offering, and 871,832 shares  of


                                       20
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<PAGE>





    its common stock  in a concurrent  rights offering, for  net proceeds  of
    $49.1 million. 

      Although the  Company expects  to  have positive  cash  flow from  its
    existing operations, the Company may require significant amounts of  cash
    for any acquisition of a business or technology. The Company expects that
    it will finance any such  acquisitions through a combination of  internal
    funds, additional debt or equity financing, and/or short-term  borrowings
    from ThermoTrex or  Thermo Electron,  although it has  no agreement  with
    these companies  to ensure  that funds  will be  available on  acceptable
    terms or  at  all.  The  Company  believes  its  existing  resources  are
    sufficient to meet  the capital requirements  of its existing  operations
    for the foreseeable future.


                                    BUSINESS
                                    --------

      The Company designs, manufactures,  and markets  mammography
     equipment
    and minimally invasive  stereotactic breast  -biopsy systems used  for the
    detection of  breast  cancer,  as well  as    general radiography  (X-ray)
    equipment.  In  addition,  the  Company  manufactures  specialized  X-ray
    equipment, including imaging systems used in the diagnosis and  treatment
    of  coronary   artery  disease   and  other   vascular  conditions,   and
    radiographic fluoroscopy (R/F) systems used to diagnose  gastrointestinal
    (GI) disorders and other conditions.

      The  Company, incorporated  in  September  1995  as  a  wholly  owned
    subsidiary of  ThermoTrex  Corporation  (ThermoTrex), consists of  four
    operating  units:  Lorad,  Bennett   X-Ray  Corporation  (Bennett),   XRE
    Corporation (XRE), and  Continental X-Ray  Corporation (Continental).  In
    October 1995,  the Company  acquired  all of  the outstanding  shares  of
    capital stock of Bennett from ThermoTrex in exchange for a $42.0  million
    principal amount  4.2%  subordinated  convertible  note  (of  which  $8.0
    million  remains   outstanding).  Also   in  October   1995,   ThermoTrex
    contributed all  of the  assets  and liabilities  relating to  its  Lorad
    division and the  development of its  Sonic CT(TM) (Computed  Tomography)
    s ystem to  the Company in exchange for 20,000,000 shares of the Company's
    common stock.  In May 1996, the Company acquired substantially all of the
    assets and liabilities of  XRE for approximately  $18.5 million in  cash,
    net of cash acquired  and including the repayment  of debt. In  September
    1996,  the  Company  acquired  substantially   all  of  the  assets   and
    liabilities of Continental for approximately  $18.4 million in cash,  net
    of cash acquired and including the repayment of debt.

      E   ach unit  specializes in  manufacturing a particular  type of  imaging
    equipment for different market segments.  Through its L orad  division, the
    Company manufactures  and  markets  mammography  and  minimally  invasive
    stereotactic  breast-biopsy  systems,  which  provide  a  cost-effective,
    less-invasive alternative to  open surgery for  the biopsy of  suspicious
    breast   lesions.   Bennett's   primary   product   line   consists    of
    general-purpose  X-ray   equipment,   but   Bennett   also   manufactures
    mammography systems, a stereotactic breast-biopsy system, and X-ray units
    used by  chiropractors and  veterinarians. XRE  manufactures and  markets
    X-ray  imaging  systems  used  by  interventional  cardiologists  in  the
    diagnosis and  treatment  of blockages  in  coronary arteries  and  other

                                       21
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<PAGE>





    vessels.  XRE  also  manufactures  electrophysiology  products  that  aid
    doctors  in  diagnosing  and  treating  cardiac  arrhythmia.  Continental
    manufactures and markets  a broad line  of general-purpose and  specialty
    X-ray systems, including    R/F systems used to  diagnose GI disorders  . In
    addition,  Continental manufactures  electrophysiology   products  and
    mammography systems.

      The Company  also  manufactures  the specialized  hair-removal  lasers
    purchased by  its  sister  company,  ThermoLase,  another  majority-owned
    subsidiary of ThermoTrex,and nondestructive testing systems, which are
    used by the  military to  test aircraft for stress  fractures and
    other defects.

      The Company is currently developing a  full-breast digital mammography
    system that is intended to be capable of higher image quality. The system
    is designed to  enhance the  X-ray image  through software  and to  allow
    near-real-time analysis . The Company  expects that it will be possible to
    electronically transmit  these  images  to  allow  off-site  analysis  by
    another radiologist. The  Company  believes  this  technology  may  also
    provide better images  of dense breast  tissue, which is  often found  in
    younger women. The Company  is currently   collecting clinical data  to be
    submitted with the Company's 510(k) application to the U.S. Food and Drug
    Administration (FDA), which must grant  market  clearance  before t
    system can  be  sold commercially. The  Company  has designed  its  new,
    high-end  conventional  mammography  systems  so  that  radiologists  can
    upgrade to  digital technology  when it  becomes available.  The  Company
    believes that the  digital imaging  technology being  developed for  this
    system may  be  adaptable  to its  general  and  specialized  radiography
    systems, and  the Company  will  seek to  develop applications  in  these
    markets. The Company is  also working on a  more advanced version of  its
    digital  technology,  which  incorporates  a  flat-panel,  direct-digital
    detector and could provide still more information for earlier diagnoses.

    Breast Cancer Detection

      Mammography Systems.    Most  experts agree  that mammography,  the  X-ray
      --------------------
    imaging of breast tissue, is the best method for detecting breast cancer.
    The Company designs, manufactures,  and markets mammography systems  that
    are generally differentiated on the  basis of price and performance.  The
    Company's high-end models are the recently introduced Lorad M-IV and  the
    Bennett Contour.  Many of  the Lorad  M-IV's features  were developed  in
    response to  user demands,  including  the ability  to be  upgraded.  The
    Bennett Contour offers a patented tilt  C-arm that permits the system  to
    tilt toward or away from the patient to aid in imaging breast tissue. The
    Company's lower-priced models are the Lorad M-III and the Bennett MF-150,
    which do not offer  all of the  features of the  high-end models and  are
    marketed to  more  cost-conscious  customers. In  addition,  the  Company
    offers the Lorad T-350 and the Bennett MD-5 mobile mammography systems.

      Successful imaging  of  dense  breast  tissue  requires  high-contrast
    images.  The  Company  recently   introduced  a  new  proprietary   High-
    Transmission Cellular (HTC)(TM) grid that, compared with existing  grids,
    reduces X-ray scattering while  blocking fewer primary X-rays,  resulting
    in higher-contrast images  with lower  radiation doses. The  HTC grid  is


                                       22
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<PAGE>





    currently available  on the  Lorad  M-IV and  will  be available  on  the
    Bennett Contour.

      The Company  currently has  prototype full-breast  digital mammography
    systems in operation at  Good Samaritan Hospital in  New York and at  the
    University of Virginia Medical Center. The Company expects to submit data
    collected using  this  prototype  to  the FDA  for  clearance,  which  is
    required before  the  Company  can commercially  market  its  full-breast
    digital imaging system.

      The Company  is  currently  developing a  next-generation  full-breast
    digital mammography  system,  which would  replace  the  film with  a    
    solid-state detector capable of directly recording the X-ray image in  an
    electronic format. The system is designed to substantially increase image
    contrast without a significant decrease in image resolution.

      The Company believes that demand in the market for mammography systems
    is driven primarily  by technological innovation  that results in  better
    image quality. Although growth of  the installed base has slowed,  demand
    for new  systems  continues  as  older models  are  replaced  with  those
    offering technological  innovations. In  addition, the  Company  believes
    that the market  outside the United  States will grow  as more  countries
    adopt mammography quality standards similar to those recently adopted  in
    the United States.

      Minimally Invasive Stereotactic Breast-biopsy  Systems. Mammography  is
      -------------------------------------------------------
    only one of  the first  steps in  the diagnosis  of breast  cancer. If  a
    mammogram reveals a suspicious lesion that cannot be identified as benign
    or malignant, the next  step typically is to  perform a biopsy to  remove
    cells from the  suspicious lesion to  determine whether or  not they  are
    cancerous.

      Traditionally, biopsies  have  been performed  in  open surgery  under
    general anesthetic.  Surgical biopsies  can  be painful  procedures,  and
    surgeons generally remove a large area  of breast tissue, about the  size
    of a golf ball,  to ensure the collection  of tissue from the  suspicious
    lesion. These surgeries can leave visible scarring on the breast and scar
    tissue in the breast that can make detecting cancers in future mammograms
    more difficult.

      The Company  offers  a  variety  of  minimally  invasive  stereotactic
    breast-biopsy systems  that provide  an alternative  to surgical  biopsy.
    These stereotactic breast-biopsy systems  were introduced to address  the
    disadvantages of  open  surgical  biopsy  and  can  be  performed  on  an
    outpatient basis  under  local  anesthetic.  These  procedures  generally
    remove only a small tissue sample, resulting in minimal scarring both  on
    and in the breast.

      The Company offers  a dedicated prone  table, the  StereoGuide(R), for
    customers that perform  a significant number  of biopsy procedures.  With
    the dedicated  prone  table,  the  patient  lies  down  with  her  breast
    suspended through an aperture in the table. X-ray imaging equipment and a
    needle-gun attachment (not manufactured by the Company) are mounted below
    the table. Patients on the  prone table are more comfortable,  increasing
    the likelihood they will  remain still during  the procedure, and  cannot

                                       23
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<PAGE>





    see the  needle being  inserted in  the breast,  reducing the  chance  of
    fainting. Recent  studies indicate  that  stereotactic needle  biopsy  is
    equally effective compared with surgical biopsy in determining whether  a
    suspicious lesion is malignant. The typical cost of a stereotactic needle
    biopsy procedure is  approximately one  third of  the price  for an  open
    surgical biopsy. The  Company's StereoGuide  system is the  subject of  a
    lawsuit alleging infringement of a Fischer Imaging Corporation  (Fischer)
    patent. See "Business - Legal Proceedings."

      The Company also offers upright, add-on systems,  the StereoLoc II and
    the Cytoguide, that can be attached  to most of its mammography  systems.
    Add-on systems principally consist of  a needle-gun attachment that  fits
    onto the mammography  system in place  of the breast-compression  paddle.
    The stereotactic images required to plot  the location of the lesion  are
    taken by the mammography system. These systems enhance the  functionality
    of a mammography  system and are  beneficial to customers  who have  only
    periodic demand for stereotactic needle-biopsy procedures.

      The Company  offers a  digital spot  imaging  option with  all of  its
    stereotactic breast-biopsy systems. Although  not capable of imaging  the
    entire breast,  digital spot  imagers are  capable of  capturing an  area
    large enough to  cover a  suspicious lesion. The  Company's digital  spot
    imaging systems can record and display an X-ray image in approximately 10
    seconds. Since the image is recorded in electronic format, a computer can
    quickly plot the location of the lesion  and aim the needle gun once  the
    lesion has  been  located  with  a  cursor  on  the  computer  screen.  A
    stereotactic breast-biopsy procedure  using digital spot  imaging can  be
    performed in as short a time as 10 minutes, compared with a typical  time
    of 45 minutes using a film-based system.

      The Company believes that the stereotactic breast-biopsy system market
    will grow as the  procedure becomes more widely  accepted by the  medical
    community and as pressures to contain healthcare costs increase. 

    General Radiography

      The Company addresses the  general radiography (X-ray)  market through
    its Bennett and Continental subsidiaries. Bennett designs,  manufactures,
    and markets office-based X-ray systems, which are basic systems generally
    used in  medical  outpatient facilities,  such  as doctors'  offices  and
    surgi-care centers. Bennett has focused on this segment of the market  by
    providing  low-cost,  reliable  systems.  Bennett  and  Continental  also
    design, manufacture,  and market  the  more sophisticated  and  expensive
    radiographic  systems  typically  used  in  hospitals  and  clinics.   In
    addition, Bennett  manufactures  and  markets  imaging  systems  designed
    specifically for chiropractors and veterinarians.

      The U.S.  market for  general X-ray  systems is  stable, and  consists
    primarily of replacement sales as customers upgrade older equipment.  The
    Company believes that  the international market  is substantially  larger
    than the U.S.  market and  that the installed  base of  systems is  still
    growing, particularly in developing  countries. The Company has  recently
    expanded its international sales efforts. 



                                       24
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<PAGE>





      The Company's radiographic  systems typically  include a  generator, a
    tube stand, and a table or bucky structure to hold the film. For each  of
    these components the  Company offers  a variety of  options and  features
    that can  be  configured  to  create systems  with  different  price  and
    performance  characteristics.  A  high-end,  hospital-based  system   may
    consist of  a 60-kilowatt,  high-frequency generator;  a  ceiling-mounted
    overhead tube crane; a four-way floating, elevating table; and an upright
    bucky stand.  An  office-based  system  may  consist  of  a  25-kilowatt,
    high-frequency generator; a floor-mounted, free-standing tube stand;  and
    an upright bucky  stand. The Company's  general radiography product  line
    features high-frequency generators with anatomical programming and  other
    operator-selected features.

      The Company offers two  linear tomography systems: the  Bennett BT-300
    and    the    Continental    Precision    Movement    Tomography    (PMT)
    radiographic/tomographic system. In  a linear  tomography procedure,  the
    X-ray tube sweeps over  the patient in one  direction with the film  tray
    sweeping under the patient in the opposite direction. The resulting image
    provides an unobstructed  view at  a desired plane  within the  patient's
    body, of the  kidneys, for  example. The  Continental PMT  system uses  a
    patented robotic positioning system to rapidly position the equipment and
    the patient for either tomographic or general radiography procedures. The
    Company believes that for a number of applications its tomography systems
    may be a cost-effective alternative to computed tomography scanners.

      The Company believes digital imaging will have significant application
    in  the  general  and  specialized  radiographic  markets  and  that  the
    technology it develops for its full-breast digital imaging system may  be
    adaptable to  these  applications.  In general  X-ray  applications,  the
    Company believes digital imaging will  produce better quality images  and
    reduce operating  costs  by eliminating  the  need for  film,  processing
    equipment, and chemicals.  In addition, digital  imaging will permit  the
    electronic storage of images on magnetic or optical media, as well as the
    transmission of images  to multiple locations.  Furthermore, the  Company
    believes digital imaging  could make  the image  intensifiers, which  are
    large and expensive components in certain imaging systems, obsolete.

    Cardiac Catheterization, Angiography, and Electrophysiology

      In May 1996, the  Company acquired XRE, a  designer, manufacturer, and
    marketer of complete  cardiac catheterization  laboratories (also  called
    cath labs)  and positioners  for  cardiovascular imaging  systems.  XRE's
    imaging equipment is used in cath labs where angiography (examination  of
    the blood vessels using X-rays following the injection of a  radio-opaque
    contrast medium)  is performed  by  an interventional  cardiologist.  XRE
    systems consist of a mechanical positioner, which is used to position  an
    X-ray source and an image intensifier around a patient who lies prone  on
    an angiographic table. The entire system is designed to provide real-time
    images of  the  heart and  coronary  arteries for  physicians  performing
    interventional procedures,  such as  a  diagnostic angiogram  or  balloon
    angioplasty.

      Coronary artery disease is  the leading cause  of death in  the United
    States and represents an increasing health risk throughout the world. One
    of the most  common forms of  cardiovascular disease is  atherosclerosis,

                                       25
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<PAGE>





    which can lead to atheroma, or  a narrowing of the arteries. In  addition
    to the coronary arteries, atherosclerosis can effect blood vessels in the
    brain, legs, and arteries throughout the body.

      Traditionally, angiography has been the tool  of choice for diagnosing
    atherosclerosis and  certain  other cardiovascular  diseases  because  it
    provides the  clearest  and  most  accurate  depiction  of  the  coronary
    arteries. Cardiac angiography is  performed in a cardiac  catheterization
    laboratory and  involves  X-ray imaging  of  the heart  and  large  blood
    vessels following  the  injection of  a  radio-opaque solution  into  the
    patient.

      Historically, the  primary  form  of  treatment  for  coronary  artery
    disease has  been open-heart  bypass surgery.  However, in  recent  years
    significant advances have been made  in the treatment of  atherosclerosis
    and other coronary  artery diseases without  extensive surgery. A  common
    alternative treatment  is balloon  angioplasty, a  procedure in  which  a
    segment of a narrowed coronary artery is stretched by the inflation of  a
    balloon introduced into  the affected artery.  A more recent  development
    involves the permanent implantation of a  device called a stent into  the
    blood vessel in order to keep the restricted vessel open once it has been
    expanded by balloon angioplasty.

      Angioplasty and  stent placement  are less  invasive than  surgery and
    generally do not require lengthy hospitalization (typically no more  than
    two days). The Company believes vascular and cardiovascular surgeons will
    increasingly  use  balloon  angioplasty  and  these  other  less-invasive
    techniques to  treat vascular  diseases. These  procedures are  performed
    under the  guidance  of  X-ray  imaging such  as  that  provided  by  the
    Company's equipment.

      XRE's products include the Unicath C cardiovascular imaging system and
    the Unicath  LP  biplane  cardiovascular  imaging  system.  XRE  recently
    introduced the Unicath SP, its newest single-plane cardiovascular imaging
    system, with enhanced features such as  a larger X-ray tube and  advanced
    image intensifier with Full-Frame(TM) Zoom to further enhance the imaging
    of interventional devices such as stents.

      To complement its Unicath SP labs, XRE has developed a line of digital
    image processing systems, workstations, and archive alternatives. Each of
    these products  uses an  "open architecture"  to facilitate  connectivity
    with industry-standard  networks  and  storage devices.  XRE's  new  DVFX
    digital  video   filter   system   acquires,   enhances,   and   displays
    high-resolution images  at 30  frames  per second  to clearly  image  and
    freeze the motion of the heart.  The Unicath SP also has XRE's  exclusive
    Full-Frame  Zoom  feature,  which   further  improves  visualization   of
    interventional  devices  by  enlarging  the  presentation  on  TV   image
    monitors.

      Many of XRE's X-ray positioners are based on its parallelogram design.
    This design  permits  multi-angular  views  of  the  heart  and  coronary
    arteries while the patient remains stationary on the table.

        Both   XRE   and   Continental   design,   manufacture,   and   sell
    electrophysiology systems that are used in the diagnosis and treatment of

                                       26
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<PAGE>





    cardiac arrhythmia, which is characterized by the sudden, erratic beating
    of the heart and  can result in cardiac  arrest. Both the Continental  EP
    2000 system  and XRE's  Unicath  EP consist  of  a C-arm  positioner,  an
    elevating/tilting table,  and  a high-frequency  X-ray  generator.  XRE's
    Unicath   EP   includes   a    parallelogram   positioner,   a    similar
    elevating/tilting table, and a constant-potential generator. In addition,
    XRE offers a biplane  version of Unicath EP,  which provides X-ray  views
    from two  different  angles simultaneously,  thereby  shortening  lengthy
    electrophysiology procedures by at least  half. Both XRE systems  feature
    variable-rate pulsed fluoroscopy with high-performance digital imaging.

    Radiographic Fluoroscopy Systems

      Through its Continental  subsidiary, acquired  in September  1996, the
    Company  designs,  manufactures,  and  markets  radiographic  fluoroscopy
    products. An R/F system is able  to record dynamic events by capturing  a
    series of images in a short period of time. For example, R/F systems  are
    used for various  gastrointestinal procedures to  image in real-time  the
    progress of a radio-opaque  ingested solution (typically barium)  through
    the digestive tract.

      Continental  produces  R/F   systems  using   advanced  high-frequency
    generators that provide pulsed power, resulting in substantially  reduced
    radiation exposure to the patient. Continental's R/F products include the
    new DigiSpot 2000, a high-speed  digital imaging system that records  the
    image in  an  electronic format,  permitting  the electronic  storage  of
    images on magnetic or  optical media, and the  transmission of images  to
    multiple locations with image quality comparable with film-based systems.

    Other Products

      The Company  uses  its technological  and  manufacturing expertise  to
    produce a number of other products.

      The  Company's  LPX-160  portable  imaging  system  is  based  on  the
    Company's medical imaging technology. This system is designed to  produce
    high-resolution images of metals, composites, and plastics. Customers for
    this system have included the United States Air Force, several commercial
    airlines, and Canadian and American utilities.

      The Company manufactures an X-ray  source that is used  as a component
    to a fill-measuring device  sold by Thermedics  Inc., a publicly  traded,
    majority-owned subsidiary of Thermo Electron. During fiscal 1996 sales of
    such devices under this arrangement totaled $361,000.

      The  Company  also  manufactures  the  lasers   used  in  ThermoLase's
    hair-removal process.  ThermoLase is  a publicly  traded,  majority-owned
    subsidiary of  ThermoTrex.  During fiscal  1996,  sales of  these  lasers
    totaled $8,549,000.  The  Company  has committed  to  deliver  additional
    lasers to  ThermoLase  under  this  arrangement  for  approximately  $6.4
    million. The Company anticipates that  these lasers will be delivered  in
    fiscal 1997.




                                       27
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<PAGE>





    Sales and Distribution

      The Company sells  its products  through a  worldwide network  of more
    than 100 independent dealers and, to a lesser extent, on a direct  basis.
    Each of the Company's operating units employs regional sales managers who
    oversee the  performance of  the independent  dealers on  a domestic  and
    international basis  and,  in  certain instances,  support  direct  sales
    efforts. The  Company and  its independent  dealers maintain  a staff  of
    factory-trained service technicians to support its systems on a worldwide
    basis.

    OEM Agreements

      In addition  to  manufacturing  and  marketing  its own  systems,  the
    Company manufactures systems and  system components as  an OEM for  other
    medical equipment  companies  such as U.S. Surgical, GE, Philip
    Picker International. See "Business - Dependency on a Single Customer." 

    Research and Development

      The Company  maintains  active programs  for  the  development of  new
    mammography and X-ray imaging systems. The Company's current  development
    efforts  are  focused  on  the  development  of  a  full-breast   digital
    mammography system, X-ray  sensors for  direct-detection digital  imaging
    technology, and  the enhancement  of existing  mammography products.  The
    Company believes that the digital  imaging technology developed for  this
    system also  will  be  readily  adaptable  to  general  radiographic  and
    diagnostic cardiac imaging systems.

      One of the  Company's long-term research  and development  programs is
    the development of  a Sonic CT  system that uses  acoustic waves to  form
    high-resolution  images  of  breast  tissue.  The  Company  has  deferred
    spending additional resources on Sonic CT at the present time, so that it
    may concentrate  its  resources  more directly  on  its  digital  imaging
    research and development.

      The Company is developing products based on digital imaging technology
    developed by scientists at ThermoTrex. ThermoTrex has granted the Company
    a fully  paid,  exclusive,  worldwide,  perpetual  license  to  use  such
    technology in the  fields of mammography  and general radiography.  Under
    the terms of the license agreement with ThermoTrex, if the Company elects
    to fund approximately $6 million of  the research and development in  the
    fields  of  radiographic  fluoroscopy,  mobile  C-arm  fluoroscopy,   and
    cardiography/angiography over a three-year period, the Company's  license
    will be extended  to cover  such fields. As  of September  28, 1996,  the
    Company had cumulatively funded  $1.8 million under  the agreement.   See
    "Relationship and Potential  Conflicts of Interest  with Thermo  Electron
    and ThermoTrex."

      Research and development expenses  of the Company were  $18.9 million,
    $8.6 million, and $10.7  million for fiscal 1996,  the nine months  ended
    September 30, 1995, and 1994, respectively.




                                       28
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<PAGE>





    Competition

      The healthcare  industry  in  general,  and  the  market  for  imaging
    products in particular, is highly competitive. The Company competes  with
    a  number  of  companies,  many  of  which  have  substantially   greater
    financial, marketing, and other resources than the Company. The Company's
    competitors  include  large  companies  such  as  GE,  Philips,  Siemens
    Toshiba, Shimadzu,  and  Picker  International,  which  compete  in  most
    diagnostic imaging modalities,  including X-ray imaging.  In addition,  a
    significant portion of the Company's sales  are to U.S. Surgical, GE  and
    Philips through  OEM arrangements.  The products  sold through  such  OEM
    arrangements  compete  with  those  offered   by  the  Company  and
    independent  dealers.  The   Company's  StereoLoc   II,  Cytoguide,   and
    StereoGuide stereotactic  breast-biopsy  systems  compete  with  products
    offered by  GE,  Fischer  Imaging  Corporation,  and  Philips,  and  with
    conventional surgical biopsy  procedures. The Company  competes in  these
    markets primarily on the basis of product features, product  performance,
    and reputation as well  as price and service.   The Company believes that
    competition  is   likely  to   increase  as   a  result   of   healthcare
    cost-containment pressures and the development of alternative  diagnostic
    and  interventional   technologies.     See  "Risk   Factors  -   Intense
    Competition" and "- Technological Change and New Products."

    Patents and Proprietary Technology

      The Company's policy  is to protect  its intellectual  property rights
    and  to  apply  for  patent  protection  when  appropriate.  The  Company
    currently holds numerous issued United States patents expiring at various
    dates ranging  from 2003  to 2014.  The  Company also  has more  than  10
    applications pending for additional United States patents and a number of
    foreign counterparts for  its patents  in various  foreign countries.  In
    addition,  the  Company  has  registered  for  other  trademarks.  Patent
    protection provides the Company with competitive advantages with  respect
    to  certain  systems.  The  Company  believes,  however,  that  technical
    know-how and trade secrets are more important to its business than patent
    protection.

      Competitors of the Company and other third parties hold issued patents
    and pending patent  applications relating  to imaging  and other  related
    technologies, and  it  is  uncertain whether  these  patents  and  patent
    applications will require the Company to alter its products or processes,
    pay licensing fees,  or cease  certain activities.   See "Risks  Factors -
    Risks Associated  With  Pending  and Threatened  Patent  Litigation"  and
    "Business - Legal Proceedings."

    Government Regulation

      The  Company's   products   and   its   research,   development,   and
    manufacturing  activities   are  subject   to  regulation   by   numerous
    governmental authorities in the United States and other countries. In the
    United States, medical devices  are subject to  rigorous FDA review.  The
    federal Food, Drug and Cosmetic Act, the Public Health Services Act,  and
    other federal statutes and regulations  govern or influence the  testing,
    manufacture,  safety,  labeling,  storage,  record  keeping,   reporting,
    approval, advertising, and promotion of products such as those offered by

                                       29
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<PAGE>





    the Company.  Noncompliance with  applicable requirements  can result  in
    fines, recalls, or seizures of  products, total or partial suspension  of
    production, and criminal prosecution.

      The Company is also subject to periodic inspections  by the FDA, whose
    primary  purpose  is  to  audit   the  Company's  compliance  with   Good
    Manufacturing  Practices  (GMP).  Enforcement  of  GMP  regulations   has
    increased significantly  in  the last  several  years, and  the  FDA  has
    publicly stated that compliance will be more strictly scrutinized. In the
    event that the Company or any of  its facilities was determined to be  in
    noncompliance, and to the  extent that the Company  or such facility  was
    unable to convince the FDA of the adequacy of its compliance, the FDA has
    the power  to  assert  penalties  or  remedies,  including  a  recall  or
    temporary suspension of product  shipments until compliance is  achieved.
    Such penalties or remedies  could have a material  adverse effect on  the
    Company's business and results of operations.

      The Company is also regulated  by the FDA under  the Radiation Control
    for Health and Safety Act of 1968 (Public Law 90-602), which specifically
    addresses radiation-emitting  products. Under  this law,  the Company  is
    responsible for submitting initial reports on all new X-ray systems  that
    require certification to FDA performance standards. The Company must also
    submit a quality  assurance and  test program  for FDA  review to  ensure
    continued compliance with X-ray performance standards.

      Historically, the Company  has been subject  to recalls of  certain of
    its products from time to time  under Public Law 90-602. Under this  law,
    any product  that is  not  in compliance  with the  relevant  performance
    standard must be repaired, refurbished, or returned at the manufacturer's
    expense.

      The Company believes  that compliance with  federal, state,  and local
    environmental regulations will not have a material adverse effect on  its
    capital expenditures,  earnings,  or  competitive position.    See  "Risk
    Factors - Government Regulation; No Assurance of Regulatory Approval" and
    "- Healthcare Reform; Uncertainty of Patient Reimbursement."

    Backlog

      The backlog of firm orders was $71.7 million as of September 28, 1996,
    compared with  $45.4  million  as  of  September    30, 1995.  The  Company
    anticipates that substantially all of the backlog at September 28,  1996,
    will be shipped during fiscal 1997.

    Raw Materials

      Raw materials, components, and  supplies purchased by the  Company are
    either available from a number of different suppliers or from alternative
    sources that could be developed without a material adverse effect on  the
    Company.  To  date,  the  Company  has  experienced  no  difficulties  in
    obtaining these materials.





                                       30
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<PAGE>





    Seasonal Influences

      There are no significant seasonal influences on the Company's sales of
    products and services.

    Working Capital Requirements

      There are no special  inventory requirements or credit  terms extended
    to customers that would have a  material adverse effect on the  Company's
    working capital.

    Dependency on a Single Customer

      Revenues from  OEM  sales  of  a  modified  design  of  the  Company's
    stereotactic prone breast-biopsy  system to U.S.  Surgical accounted  for
    11% of the Company's total revenues in fiscal 1996.

    Facilities

      The Company  owns two  office and  manufacturing facilities:  a 63,500
    square-foot facility in Danbury,  Connecticut, and a 163,000  square-foot
    facility in Broadview, Illinois. The Company leases a 120,000 square-foot
    office and manufacturing facility  in Copiague, New  York, under a  lease
    expiring in 2005, a 156,000 square-foot office and manufacturing facility
    in Littleton, Massachusetts, under a lease expiring in 2012, and a 60,000
    square foot office  and manufacturing facility  in Danbury,  Connecticut,
    under a lease expiring in 2006.

      The Company believes that its facilities are in good condition and are
    suitable and adequate to meet current needs.

    Personnel

      As of September 28, 1996, the Company employed 992 persons.

    Legal Proceedings

      In April  1992,  Fischer  Imaging  Corporation (Fischer)  commenced  a
    lawsuit in  the  United  States District  Court,  District  of  Colorado,
    against  the  Company's  Lorad  division,  alleging  that  Lorad's  prone
    breast-biopsy  system  infringes   a  Fischer  patent on  a   precision
    mammographic needle-biopsy system. As of September 28, 1996, the  Company
    had recognized aggregate revenues of approximately $63.1 million from the
    sale of such systems,  of which $34.4 million  represents sales prior  to
    October 1,  1995.  The  suit  requests  a  permanent  injunction,  treble
    damages, and attorneys' fees and expenses. If the Company is unsuccessful
    in defending  this lawsuit,  it may  be enjoined  from manufacturing  and
    selling its  StereoGuide  system  without  a  license  from  Fischer.  No
    assurance can be given  that the Company  will be able  to obtain such  a
    license, if required,  on commercially  reasonable terms, if  at all.  In
    addition, the Company may be subject to damages for past infringement. No
    assurance can be given as to  the amount that the Company may  eventually
    be required to pay in expenses or  in such damages.  See "Risk Factors  -
    Risks Associated With Pending and Threatened Patent Litigation."


                                       31
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<PAGE>





      In connection with the organization of  the Company, ThermoTrex agreed
    to indemnify the Company for any and all cash damages in connection  with
    the Fischer  lawsuit with  respect  to sales  of the  Company's  products
    occurring prior  to  October 1995,  when  Lorad was  transferred  to  the
    Company. Notwithstanding  this  indemnification,  the  Company  would  be
    required to report as  an expense in its  results of operations the  full
    amount, including any reimbursable  amount, of any  damages in excess  of
    the amount accrued (approximately $2  million as of September 28,  1996),
    with any  indemnification  payment  it  receives  from  ThermoTrex  being
    treated as a contribution to shareholders' investment.


                RELATIONSHIP AND POTENTIAL CONFLICTS OF INTEREST
                       WITH THERMO ELECTRON AND THERMOTREX

      The Company  was  incorporated in  September  1995 as  a  wholly-owned
    subsidiary of  ThermoTrex. ThermoTrex  acquired  all of  the  outstanding
    capital stock of Bennett in September 1995 for approximately  $42,000,000
    in cash, net of cash acquired.  On October 2, 1995, the Company  acquired
    all of the outstanding shares of capital stock of Bennett from ThermoTrex
    in exchange  for  the  $42,000,000  principal  amount  Convertible  Note.
    Subsequently, on  October 16,  1995, ThermoTrex  contributed all  of  the
    assets and liabilities relating to its Lorad division and the development
    of its Sonic CT system to  the Company in exchange for 20,000,000  shares
    of Common Stock of the Company. 

      Thermo Electron has adopted a strategy of selling  a minority interest
    in subsidiary companies to outside investors as an important tool in  its
    future development. As part of this strategy, Thermo Electron and certain
    of  its  subsidiaries  have   created  publicly  and/or  privately   held
    majority-owned subsidiaries. The  Company and the  other Thermo  Electron
    subsidiaries are referred to herein as the "Thermo Subsidiaries." 

      In October  1995,  ThermoTrex granted  to  the Company  an  exclusive,
    paid-up, royalty-free license for the use of certain technology  relating
    to digital imaging  detectors in  the fields of  mammography and  general
    radiography.  Under  the   license  agreement,  if   the  Company   funds
    approximately $6 million of ThermoTrex's research and development of  the
    digital imaging  technology in  the fields  of  radiographic/fluoroscopy,
    mobile C-arm fluoroscopy and  cardiology/angiography over the next  three
    years,  then  ThermoTrex  will  be  obligated  to  grant  the  Company  a
    fully-paid, exclusive, worldwide, perpetual license  to use and sell  the
    digital  imaging  technology  in  these  fields.  The  license  agreement
    provides that ThermoTrex will manufacture  products based on the  digital
    imaging technology for the Company  in the applicable fields.  ThermoTrex
    will sell the  products to  the Company  at ThermoTrex's  cost until  the
    Company has received an amount of Net Profit (as defined below) from  the
    resale of such products equal to amounts paid by the Company for research
    and development  as set  forth  above less  any additional  research  and
    development costs incurred by ThermoTrex with the prior written  approval
    of the Company, and thereafter at ThermoTrex's cost plus one-half of  Net
    Profit. For purposes of  the preceding sentence,  "Net Profit" means  the
    difference between the prices  the Company receives  upon resale of  such
    products and the aggregate costs  of the Company and ThermoTrex  relating


                                       32
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<PAGE>





    to  such  sales.  As  of  September  28,  1996,  the  Company  had   paid
    approximately $1,800,000 to ThermoTrex under this arrangement. 

      The Company has  an arrangement  with the Tecomet  division of  Thermo
    Electron for the manufacture of the Company's proprietary HTC grid. Under
    this arrangement Tecomet manufactures the  grid for the Company  pursuant
    to written purchase  orders. The Company  owns the intellectual  property
    rights to the grid. During fiscal   1996, the Company purchased grids  for
    an aggregate  purchase  price  of $397,000     under  this  arrangement.  In
    addition, the Company  recorded expense  of $250,000  during fiscal  1996
    related to  research  and  development funding  provided  to  Tecomet  in
    connection with this project.

      Under an  arrangement with  ThermoLase,   the Company  manufactures the
    laser used in ThermoLase's hair-removal process. The Company manufactures
    these lasers for ThermoLase pursuant  to written purchase orders.  During
    fiscal 1996, the Company had sales of  $8,549,000  under this arrangement.
    The Company  has committed  to deliver  additional lasers  to  ThermoLase
    under this arrangement for approximately $6,400,000.

      Under an arrangement with  Thermedics Detection Inc., a  subsidiary of
    Thermedics Inc., a publicly-traded,  majority-owned subsidiary of  Thermo
    Electron, the Company  manufactures an X-  ray source that  is used as  a
    component to a  fill-measuring device produced  by Thermedics  Detection.
    The Company  manufactures these  X-ray sources  for Thermedics  Detection
    pursuant to  written  purchase  orders. During  fiscal   1996,  Thermedics
    Detection paid the Company $361,000 under this arrangement. 

      On October 2, 1995, in exchange  for all of the outstanding  shares of
    capital stock of  Bennett, the Company  issued the $42,000,000  principal
    amount Convertible  Note  to  ThermoTrex. The  Convertible  Note  has  an
    interest rate of  4.2% per annum  and is convertible  into shares of  the
    Company's Common Stock  at a  conversion price  of $11.79  per share.  In
    March 1996,  ThermoTrex  converted  $3,000,000 principal  amount  of  the
    Convertible Note into  254,452 shares of  Common Stock.    In July  1996,
    ThermoTrex converted an  additional $31,000,000 principal  amount of  the
    Convertible Note into 2,629,346 shares of Common Stock.

      ThermoTrex, in  addition to  providing the  Company's medical  imaging
    products, supplies  laser-based hair-removal  services and  personal-care
    products  through  its  ThermoLase   subsidiary  and  conducts    advanced
    technology research       . For  the  fiscal  year     ended  September  28
    ThermoTrex had consolidated revenues of $182,029,000 and consolidated net
    income of $42,575,000.

      Thermo Electron and its  subsidiaries develop, manufacture and  market
    environmental monitoring  and analysis  instruments, biomedical  products
    including heart-assist systems and respiratory care products, papermaking
    and paper-recycling  equipment,  alternative-energy  systems,  industrial
    process equipment and other specialized products. Thermo Electron and its
    subsidiaries also provide  environmental and  metallurgical services  and
    conduct advanced technology research and development. For its fiscal year
    ended December 30,  1995, Thermo  Electron had  consolidated revenues  of
    $2,207,417,000 and  consolidated net  income of  $140,080,000. See  "Risk


                                       33
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<PAGE>





    Factors-Potential Conflicts  of  Interest" and  "-Significant  Additional
    Shares Eligible for Future Sale." 

    The Thermo Electron Corporate Charter

      Thermo Electron and  the Thermo  Subsidiaries, including the  Company,
    recognize  that  the  benefits  and   support  that  derive  from   their
    affiliation are  essential  elements  of  their  individual  performance.
    Accordingly,  Thermo  Electron  and  each  of  the  Thermo  Subsidiaries,
    including the Company, have adopted the Thermo Electron Corporate Charter
    (the "Charter") to define the  relationships and delineate the nature  of
    such cooperation  among themselves.  The  purpose of  the Charter  is  to
    ensure that (1) all of the  companies and their shareholders are  treated
    consistently and  fairly, (2)  the scope  and nature  of the  cooperation
    among the companies, and each company's responsibilities, are  adequately
    defined, (3)  each  company has  access  to the  combined  resources  and
    financial, managerial and technological strengths of the others, and  (4)
    Thermo Electron and the Thermo  Subsidiaries, in the aggregate, are  able
    to obtain the most favorable terms from outside parties. 

      To achieve these ends,  the Charter identifies the  general principles
    to be followed by the companies, addresses the role and  responsibilities
    of the management  of each  company, provides  for the  sharing of  group
    resources by the companies  and provides for centralized  administrative,
    banking and  credit services  to  be performed  by Thermo  Electron.  The
    services provided by Thermo Electron include collecting and managing cash
    generated by members, coordinating the access of Thermo Electron and  the
    Thermo Subsidiaries (the "Thermo  Group") to external financing  sources,
    ensuring  compliance  with  external  financial  covenants  and  internal
    financial policies, assisting in  the formulation of long-range  planning
    and providing other banking and credit services. Pursuant to the Charter,
    Thermo Electron may also  provide guarantees of  debt obligations of  the
    Thermo Subsidiaries or may obtain external financing at the parent  level
    for the benefit  of the  Thermo Subsidiaries. In  certain instances,  the
    Thermo Subsidiaries may provide credit support  to, or on behalf of,  the
    consolidated entity  or  may  obtain  financing  directly  from  external
    financing sources. Under the Charter, Thermo Electron is responsible  for
    ensuring that the Thermo Group  remains in compliance with all  covenants
    imposed by  external financing  sources, including  covenants related  to
    borrowings of Thermo Electron or other  members of the Thermo Group,  and
    for apportioning such constraints within  the Thermo Group. In  addition,
    Thermo Electron  establishes  certain internal  policies  and  procedures
    applicable to  members of  the Thermo  Group. The  cost of  the  services
    provided by Thermo Electron to  the Thermo Subsidiaries is covered  under
    existing corporate services agreements  between Thermo Electron and  each
    of the Thermo Subsidiaries. 

      The Charter presently  provides that  it shall continue  in effect  so
    long as Thermo Electron and  at least one Thermo Subsidiary  participate.
    The Charter may be amended at any time by agreement of the  participants.
    Any  Thermo  Subsidiary,  including   the  Company,  may  withdraw   from
    participation in the  Charter upon  30 days' prior  notice. In  addition,
    Thermo Electron may terminate a subsidiary's participation in the Charter
    in the event the subsidiary ceases to be controlled by Thermo Electron or
    ceases to  comply  with  the  Charter  or  the  policies  and  procedures

                                       34
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<PAGE>





    applicable  to  the   Thermo  Group.  A   withdrawal  from  the   Charter
    automatically terminates  the  corporate  services  agreement  in  effect
    between the withdrawing company and Thermo Electron. The withdrawal  from
    participation does not terminate outstanding commitments to third parties
    made by the withdrawing company, or  by Thermo Electron or other  members
    of the  Thermo Group,  prior to  the withdrawal.  However, a  withdrawing
    company  is  required  to  continue  to  comply  with  all  policies  and
    procedures  applicable  to  the  Thermo  Group  and  to  provide  certain
    administrative functions  mandated  by Thermo  Electron  so long  as  the
    withdrawing company is controlled by or affiliated with Thermo Electron. 

    Corporate Services Agreement

      As provided  in the  Charter,  Thermo Electron  and  the Company  have
    entered into a  Corporate Services Agreement  (the "Services  Agreement")
    under  which   Thermo  Electron's   corporate  staff   provides   certain
    administrative services,  including certain  legal advice  and  services,
    risk management, certain employee benefit administration, tax advice  and
    preparation of  tax  returns,  centralized cash  management  and  certain
    financial and other  services to the  Company. In 1994  and 1995,  Thermo
    Electron assessed the Company an annual  fee for these services equal  to
    1.25% and 1.20%, respectively, of the Company's total revenues. Effective
    January 1,  1996, the  fee was  reduced to  1.0% of  the Company's  total
    revenues. The fee may be changed  by mutual agreement of the Company  and
    Thermo Electron. During the fiscal year  ended September 28 , 1996 , Thermo
    Electron assessed  the  Company $1,567,000     in  fees  under the  Services
    Agreement. The  Company  believes that  the  charges under  the  Services
    Agreement are  representative  of the  expenses  the Company  would  have
    incurred on  a stand-alone  basis  and that  the  terms of  the  Services
    Agreement are reasonable. For additional  items such as employee  benefit
    plans, insurance coverage and  other identifiable costs, Thermo  Electron
    charges the Company  based upon  costs attributable to  the Company.  The
    Services Agreement automatically  renews for  successive one-year  terms,
    unless canceled by the Company upon  30 days' prior notice. In  addition,
    the Services Agreement terminates automatically in the event the  Company
    ceases to be a member of the  Thermo Group or ceases to be a  participant
    in the Charter. In the event of a termination of the Services  Agreement,
    the Company will be required  to pay a termination  fee equal to the  fee
    that was paid by  the Company for services  under the Services  Agreement
    for the nine-month  period prior to  termination. Following  termination,
    Thermo  Electron  may  provide  certain  administrative  services  on  an
    as-requested basis by  the Company or  as required in  order to meet  the
    Company's obligations under  Thermo Electron's  policies and  procedures.
    Thermo Electron will charge  the Company a fee  equal to the market  rate
    for comparable  services if  such services  are provided  to the  Company
    following termination. 

    Master Guarantee Reimbursement Agreements

      The  Company  has  entered  into  a  Master   Guarantee  Reimbursement
    Agreement with  Thermo  Electron which  provides  that the  Company  will
    reimburse Thermo Electron  for any  costs it incurs  in the  event it  is
    required to pay third parties pursuant to any guarantees it issues on the
    Company's behalf. ThermoTrex  has entered into  a similar agreement  with
    Thermo Electron  with  regard  to the  Company's  obligations  which  are

                                       35
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<PAGE>





    guaranteed by Thermo Electron. The Company has also entered into a Master
    Guarantee Reimbursement Agreement with ThermoTrex which provides that the
    Company will reimburse ThermoTrex  for any costs it  incurs in the  event
    that ThermoTrex is  required to pay  Thermo Electron or  any other  party
    pursuant to any guarantees it issues on the Company's behalf. 

    Miscellaneous

      Currently, ThermoTrex beneficially owns 79 % of the outstanding shares
    of Common  Stock (excluding  shares  of Common  Stock issuable  upon  the
    conversion of the Convertible Note).    ThermoTrex may   convert additional
    principal amounts of the Convertible  Note or  purchase additional shares
    of Common Stock from time to time in the open market or directly from the
    Company. See "Risk Factors-Control by ThermoTrex." 

      As  of  September  28,   1996,  $32,696,000  of  the     Company's  cash
    equivalents were  invested  pursuant to a repurchase agreement with Thermo
    Electron. Under this agreement, the  Company in effect lends excess  cash
    to Thermo Electron, which Thermo Electron collateralizes with investments
    principally consisting  of  corporate  notes,  United  States  government
    agency  securities,  money  market  funds,  commercial  paper  and  other
    marketable securities, in the amount of at least 103% of such obligation.
    The Company's funds subject to  the repurchase agreement will be  readily
    convertible into cash  by the Company  and have an  original maturity  of
    three months or less. The repurchase agreement earns a rate based on  the
    Commercial Paper  Composite  Rate  plus  25  basis  points,  set  at  the
    beginning of each quarter. 

                                   MANAGEMENT

      The directors and executive officers of the Company  and their ages as
    of September 28, 1996 are as follows: 

                  Name          Age               Position
                  ----          ---               --------
                                                 PPosition
                                                  --------

         Gary S. Weinstein       38 Chairman of the Board and Director
         Anthony J.              56 Vice Chairman of the Board and
         Pellegrino                 Director
         Hal Kirshner            55 Chief Executive Officer, President
                                    and Director

         John N. Hatsopoulos     62 Vice President, Chief Financial
                                    Officer and Director
         Paul F. Kelleher        54 Chief Accounting Officer
         Elias P. Gyftopoulos    68 Director
         (2)

         Robert C. Howard        65 Director
         Earl R. Lewis           52 Director
         James W. May, Jr.       53 Director
         (1)(2)

         Hutham S. Olayan        42 Director
         (1)(2)
         Firooz Rufeh            58 Director

                                       36
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<PAGE>





         Kenneth Y. Tang         48 Director


    --------------
    (1)  Member of the Audit Committee. 
    (2)  Member of the Human Resources Committee. 

      All  of  the   Company's  directors  are   elected  annually  by   the
    shareholders and hold office until  their respective successors are  duly
    elected and qualified.  Executive officers  are elected  annually by  the
    Board of  Directors  and serve  at  its discretion.  Mr.  Weinstein,  Mr.
    Hatsopoulos, Mr. Kelleher, Mr. Howard, Mr. Lewis, Mr. Rufeh and Dr.  Tang
    are  full-time  employees  of   Thermo  Electron,  ThermoTrex  or   other
    subsidiaries of Thermo Electron, but  these individuals devote such  time
    to the affairs of the Company  as the Company's needs reasonably  require
    from time to time. Because each of these individuals owes duties to  each
    of the entities for which he serves as an officer or director, there  may
    be circumstances in which such individual has a conflict of interest. See
    "Risk Factors-Potential  Conflicts  of Interest"  and  "Relationship  and
    Potential Conflicts of Interest with Thermo Electron and ThermoTrex." 

      Mr. Weinstein has  been Chairman of  the Board and  a Director of  the
    Corporation since February 1996. Mr. Weinstein has also been Chairman and
    Chief Executive  Officer of  ThermoTrex and  a Vice  President of  Thermo
    Electron since February 1996.  Mr. Weinstein was  a Managing Director  of
    Lehman Brothers Inc. from 1992 until February 1996, serving most recently
    as Managing Director, head of Global Syndicate and Equity Capital Markets
    since March  1995. Prior  to that  appointment, Mr.  Weinstein served  in
    various positions  at Lehman  Brothers since  joining the  firm in  1988,
    including head of Equities in Europe, head of Equity New Issues in  North
    and  South  America  and  head  of  Global  Convertible  Securities.  Mr.
    Weinstein is also a Director of ThermoTrex and ThermoLase. 

      Mr. Pellegrino has been Vice Chairman  of the Board and a  Director of
    the Company since its inception in October 1995. Mr. Pellegrino has  been
    a Senior Vice President of ThermoTrex since July 1995 and was Chairman of
    Lorad for more than five years prior to that time. Mr. Pellegrino is also
    a Director of ThermoQuest Corporation and ThermoLase. 

      Mr. Kirshner  has  been  Chief  Executive  Officer,  President  and  a
    Director of the Company since its inception in October 1995. Mr. Kirshner
    has been President of Lorad since  February 1991. Prior to that time,  he
    served as  Chief  Operating Officer  and  President of  Electrolux  Water
    Systems, Inc. 

      Mr. Hatsopoulos has been Vice President, Chief Financial Officer and a
    Director of  the  Company  since  its  inception  in  October  1995.  Mr.
    Hatsopoulos has  been a  Vice President  and Chief  Financial Officer  of
    ThermoTrex since 1990,  the Chief  Financial Officer  of Thermo  Electron
    since 1988 and  President of  Thermo Electron  since January  1997.   Mr.
    Hatsopoulos was an Executive Vice President of Thermo Electron from  1986
    until  January  1997.  He  is  also  a  director  of  Thermo  BioAnalys
    Corporation, Thermo  Ecotek  Corporation, Thermo  Fibertek  Inc.,  Thermo
    Instrument Systems Inc., Thermo Power Corporation, Thermo TerraTech Inc.,
    Thermo Optek Corporation, ThermoQuest  Corporation, Thermo Sentron  Inc.,


                                       37
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<PAGE>





    ThermoTrex and  Lehman  Brothers  Funds,  Inc.,  an  open-end  investment
    management company. 

      Mr. Kelleher  has been  the Chief  Accounting Officer  of the  Company
    since  its  inception  in  October  1995.  Mr.  Kelleher  has  been  Vice
    President, Finance  of  Thermo Electron  since  1987 and  served  as  its
    Controller from 1982 to January 1996. He is a director of ThermoLase. 

      Dr. Gyftopoulos has been a Director of the Company since its inception
    in  October  1995.  Dr.  Gyftopoulos  has  been  the  Ford  Professor  of
    Mechanical Engineering and  of Nuclear Engineering  at the  Massachusetts
    Institute of Technology for more than five years. Dr. Gyftopoulos is also
    a director of Thermo BioAnalysis Corporation, Thermo Cardiosystems  Inc.,
    Thermo  Electron,  ThermoLase,  Thermo  Remediation  Inc.,  ThermoSpectra
    Corporation and Thermo Voltek Corp. 

      Mr. Howard has been a Director  of the Company since its  inception in
    October 1995. Mr. Howard has been  an Executive Vice President of  Thermo
    Electron since 1986.  He is also  a Director of  Thermedics Inc.,  Thermo
    Cardiosystems Inc., ThermoLase, Thermo Power Corporation, and ThermoTrex.

      Mr. Lewis has been  a Director of the  Company since its inception  in
    October 1995. Mr. Lewis has been Vice President of Thermo Electron  since
    September 1996 and Executive Vice  President and Chief Operating  Officer
    of Thermo Instrument  Systems Inc. since  December 1995 and  served as  a
    Vice President of that company from 1990  to 1995. He has also served  as
    Chief Executive  Officer,  President  and  a  Director  of  Thermo  Optek
    Corporation since  August  1995,  and President  of  Thermo  Jarrell  Ash
    Corporation for more than five years.  Mr. Lewis is also Chairman of  the
    Board and a Director of ThermoSpectra Corporation. 

      Dr. May has been a Director of the Company since February 1996. He has
    been Professor of Surgery  at Harvard Medical School  since 1994 and  was
    Associate Clinical Professor of Surgery for more than five years prior to
    that time. 

      Ms. Olayan has been a Director of the Company since February 1996. She
    has served  as President  and a  director of  Olayan America  Corporation
    since 1995  and  Competrol Real  Estate  Limited since  1986,  which  are
    members of the Olayan Group engaged in advisory services and private real
    estate investments, respectively. Ms. Olayan also served as President and
    a director of Crescent Diversified Limited, another member of the  Olayan
    Group engaged in private investments, from 1985 until 1994. Ms. Olayan is
    also a Director of Thermo Electron. 

      Mr. Rufeh has been  a Director of the  Company since its inception  in
    October 1995  and was  its Chairman  of the  Board from  October 1995  to
    February 1996. Mr. Rufeh has been the President of ThermoTrex since  1988
    and a Vice President of Thermo Electron since January 1986. From 1985  to
    1990, he was  Chairman of the  Board of Thermo  Power Corporation. He  is
    also a Director of ThermoTrex and ThermoLase. 

      Dr. Tang has  been a Director  of the Company  since its inception  in
    October 1995. Dr. Tang has been  Senior Vice President of ThermoTrex  for


                                       38
PAGE
<PAGE>





    more than five years and was  President of ThermoLase from December  1992
    to May 1995. He is also a director of ThermoLase. 

    Compensation of Directors

      Directors who are not employees of the Company, Thermo Electron or any
    other companies  affiliated with  Thermo Electron  (also referred  to  as
    "outside directors") receive an  annual retainer of $2,000  and a fee  of
    $1,000 per day for attending regular  meetings of the Board of  Directors
    and $500 per day for participating in meetings of the Board of  Directors
    held by means of  conference telephone and  for participating in  certain
    meetings of committees  of the  Board of Directors.  Payment of  director
    fees  is  made  quarterly.   Messrs.  Weinstein,  Pellegrino,   Kirshner,
    Hatsopoulos, Howard,  Lewis  and Rufeh  and  Dr. Tang  are  employees  of
    members of the  Thermo Electron  companies and  do not  receive any  cash
    compensation from the Company for their services as directors.  Directors
    are also  reimbursed for  reasonable out-of-pocket  expenses incurred  in
    attending such meetings. 

      Directors Deferred Compensation  Plan  .   Under the Company's  Deferred
      -------------------------------------
    Compensation Plan  for Directors  (the "Deferred  Compensation Plan"),  a
    director has the right to  defer receipt of his or  her fees until he  or
    she ceases  to serve  as a  director, dies  or retires  from his  or  her
    principal occupation. In  the event of  a change in  control or  proposed
    change in control of  the Company that  is not approved  by the Board  of
    Directors, deferred amounts become  payable immediately. For purposes  of
    the Deferred Compensation Plan,  a change of control  is defined as:  (a)
    the occurrence, without the prior approval of the Board of Directors,  of
    the acquisition, directly or indirectly, by any person of 50% or more  of
    the  outstanding  Common  Stock  or  the  outstanding  common  stock   of
    ThermoTrex or  25% or  more of  the outstanding  common stock  of  Thermo
    Electron or  (b) the  failure of  the  persons serving  on the  Board  of
    Directors immediately prior to any contested election of directors or any
    exchange offer or tender offer for  the Common Stock or the common  stock
    of ThermoTrex or Thermo Electron to constitute a majority of the Board of
    Directors at any time within two years following any such event.  Amounts
    deferred pursuant to the Deferred Compensation Plan are valued at the end
    of each quarter as units of Common Stock. When payable, amounts  deferred
    may be disbursed solely in shares  of Common Stock accumulated under  the
    Deferred Compensation Plan. The Company has reserved 25,000 shares  under
    this Plan.  As  of  the  date  of this  Prospectus,  24  units  had  been
    accumulated under the Deferred Compensation Plan. 

      Directors Stock  Option Plan    .   The Company  has adopted  a directors
      ----------------------------
    stock option plan (the "Plan") providing  for the grant of stock  options
    to purchase shares  of Common  Stock to outside  directors as  additional
    compensation for their service  as directors. The  Plan provides for  the
    grant of  stock  options  upon  a  Director's  initial  appointment  and,
    beginning in 2000, awards  options to purchase  1,000 shares annually  to
    eligible directors, provided the Common Stock is then publicly traded.  A
    total of 200,000 shares of Common  Stock have been reserved for  issuance
    under the Plan. 

      Under the Plan, each eligible  director and each new  outside director
    initially joining  the Board  of Directors  in 1996  will be  granted  an

                                       39
PAGE
<PAGE>





    option to purchase 40,000  shares of Common Stock  upon the later of  the
    adoption of the plan or the director's appointment or election. The  size
    of the award to new directors  appointed to the Board of Directors  after
    1996 will be reduced by 10,000 shares in each subsequent year.  Directors
    initially joining the Board of Directors after 1999 would not receive  an
    option  grant  upon  their  appointment  or  election  to  the  Board  of
    Directors, but  would be  eligible to  participate in  the annual  option
    awards described below.  Options evidencing initial  grants to  directors
    are presently exercisable,  however,  the  shares acquired upon  exercise
    are subject to restrictions on transfer  and the right of the Company  to
    repurchase such shares at  the exercise price in  the event the  director
    ceases to serve as a director of the Company or any other Thermo Electron
    company. In  such event,  the restrictions  and repurchase  rights  shall
    lapse or be deemed to have lapsed in annual installments of 10,000 shares
    per year,  starting with  the first  anniversary of  the date  of  grant,
    provided the  director  has continuously  served  as a  director  of  the
    Company, Thermo Electron or any  subsidiary of Thermo Electron since  the
    grant date. These options  expire on the fifth  anniversary of the  grant
    date, unless the  director dies,  ceases to  be an  eligible director  or
    otherwise ceases to serve as a  director of the Company, Thermo  Electron
    or any subsidiary of Thermo Electron prior to that date. 

      Commencing in 2000,  eligible directors  will also  receive an  annual
    grant of options to purchase 1,000  shares of Common Stock, provided  the
    Common Stock is then publicly traded.  The annual grant would be made  at
    the close of business on the date of each annual meeting of  shareholders
    of the Company to each  outside director then holding office,  commencing
    with the annual  meeting to be  held in 2000.  Options evidencing  annual
    grants may  be  exercised  at  any time  from  and  after  the  six-month
    anniversary of  the date  of grant  and prior  to the  expiration of  the
    option on the  third anniversary of  the date of  grant. Shares  acquired
    upon exercise  of the  options  would be  subject  to repurchase  by  the
    Company at  the exercise  price if  the recipient  ceased to  serve as  a
    director of the Company or any other Thermo Electron company prior to the
    first anniversary of the date of grant for any reason other than death. 

      The exercise price for options granted under the Plan is determined by
    the average of the closing prices reported by the American Stock Exchange
    (or such  other principal  exchange on  which the  Common Stock  is  then
    traded) for the five trading days immediately preceding and including the
    date the option is granted or,  if the shares underlying the option  were
    not so traded, at the last price paid per share by independent  investors
    in an arms'  length transaction  with the Company  prior to  the date  of
    grant. 

      Grants of stock options to outside directors have  consisted of 40,000
    shares granted in November 1995 at an exercise price of $10.25 per  share
    and 80,000 shares granted in February 1996 at an exercise price of $10.75
    per share. 

    Certain Transactions

      On November 22,  1995, November  30, 1995  and January  31, 1996,  the
    Company completed private  placements primarily to  outside investors  of
    minority investments in its Common Stock at purchase prices of $10.25 per

                                       40
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<PAGE>





    share in the November 1995 private placements and $10.75 per share in the
    January 1996  private  placement. Crescent  International  Holdings  Ltd.
    purchased an  aggregate of  200,000 shares  of the  Common Stock  of  the
    Company in such private placements. Crescent  International Holdings Ltd.
    is indirectly controlled by  Suliman S. Olayan, the  father of Hutham  S.
    Olayan, a  Director of  the  Company.   Ms. Olayan  disclaims  beneficial
    ownership of the shares owned by Crescent International Holdings Ltd.  In
    addition, the following  directors and officers  purchased the number  of
    shares of the  Company's Common  Stock set  forth below  in such  private
    placements: Anthony  J. Pellegrino,  Vice Chairman  and Director,  20,000
    shares; Hal Kirshner,  Chief Executive Officer,  President and  Director,
    100,000 shares; Robert C. Howard,  Director, 2,500 shares; Firooz  Rufeh,
    Director, 19,600 shares; and Kenneth Y. Tang, Director, 1,200 shares. 


                             EXECUTIVE COMPENSATION

    Compensation of Executive Officers

     Summary Compensation Table
     --------------------------

      The following  table  summarizes  compensation  for  services  to  the
    Company in all capacities awarded to, earned by or paid to the  Company's
    Chief Executive Officer for the last full fiscal year ended September 28,
    1996  ("fiscal 1996"),  for the nine-month period from January 1, 1995 to
    September  30,  1995 ("fiscal  1995"),  reflecting  a  change   in  th
    Corporation's fiscal year end to September 30, and for the preceding full
    fiscal year from January 2, 1994 to December 31, 1994 ("Fiscal 1994"). No
    other executive  officer of  the Company  met the  definition of  "highly
    compensated"  within  the   meaning  of  the   Securities  and   Exchange
    Commission's  executive  compensation   disclosure  rules  during   these
    periods. 

      The Company  is required  to appoint  certain  executive officers  and
    full-time employees  of  Thermo Electron  as  executive officers  of  the
    Company in accordance  with the  Thermo Electron  Corporate Charter.  The
    compensation for these executive officers is determined and paid entirely
    by Thermo Electron. The time and  effort devoted by these individuals  to
    the Company's  affairs is  provided  to the  Company under  the  Services
    Agreement between  the  Company  and Thermo  Electron.  Accordingly,  the
    compensation for  these  individuals is  not  reported in  the  following
    table. See "Relationship and Potential Conflicts of Interest with  Thermo
    Electron and ThermoTrex." 

                           Summary Compensation Table
                                 Annual      Long-Term
                             Compensation   Compensatio
                             ------------   -----------
                                                 n
                                                 -

                                             Securities
         Name and     Fisca                 Underlying   All Other
        Principal       l     Salary  Bonus            Compensation(
        ---------             ------  -----            -------------
         Position     Year                  Options(3)      4)
         --------     ----                  ----------      --



                                       41
PAGE
<PAGE>





    Hal Kirshner
    Chief Executive
    Officer  and       1996  $192,500     -- 150,000(TX   $9,958 (5)
    President.......                     (1)         M)
                                               150(TMO)

                       1995           $200,0    --         7,005
                            150,000(2     00
                                    )
                       1994   200,000 180,00               6,750
                                           0 22,500(TMO
                                                      )

    --------------
    (1)  Compensation for  executive  officers  is  reviewed  and  determined
         annually at the end of each calendar year. Accordingly, bonuses have
         not yet been determined for fiscal 1996.
    (2)  Salary  data  for  fiscal  1995  reflects  salary  paid  during  the
         nine-month period from January 1, 1995  to September 30, 1995, as  a
         result of the change in the Company's fiscal year-end. 
    (3)  In  addition  to   receiving  options  to   purchase  Common   Stock
         (designated in the table as  TXM), Mr. Kirshner was granted  options
         to  purchase  shares  of  the   common  stock  of  Thermo   Electron
         (designated in  the  table  as TMO).  Information  with  respect  to
         options to purchase the  common stock of  Thermo Electron reflect  a
         three-for-two split effected in May 1996 in the form of a 50%  stock
         dividend. 
    (4)  Represents  the  amount  of  matching  contributions  made  by   the
         individual's employer on behalf of the Chief Executive Officer under
         the Thermo Electron 401(k) plan. 
    (5)  In addition to  the matching  contribution referred  to in  footnote
         (4), such amount includes $4,614,  representing the market value  of
         115 shares of Thermo Electron common stock received by Mr.  Kirshner
         in May 1996 in recognition of his managerial achievements at  Thermo
         Electron's Annual Management Conference.

    Stock Options Granted During Fiscal 1996
    ----------------------------------------

      The following table sets  forth certain information concerning  grants
    of stock options made during fiscal 1996 to the Chief Executive  Officer.
    It has  not  been  the  Company's  policy in  the  past  to  grant  stock
    appreciation rights, and no such rights were granted during fiscal 1996. 

                       Option Grants in Last Fiscal Year

                                                          Potential
                             % of                         Realizable
                Number of    Total                     Value at Assumed
                  Shares    Options                      Annual Rates
          Name  Underlying  Granted Exercis             of Stock Price
          ----
                 Options      to       e    Expiratio  Appreciation for
               Granted (1) Employees  Price  n Date    Option Term (2)
               -----------                    -----    ---------------
                           in Fiscal  Per
                                      ---
                             Year    Share
                             ----    -----

                                                         5%       10%

                                       42
PAGE
<PAGE>





        Hal
        Kirshn     150,000   15%    $11.00  3/26/08    $1,312,5 $3,528,0
        er           (TXM)                                   00       00

                       150  .01%     42.79  5/22/99       1,011    2,124
                  (TMO)(3)
    _______
    (l)  The options to purchase  shares of the Common  Stock of the  Company
         are  presently  exercisable,  however,  the  shares  acquired   upon
         exercise are subject  to repurchase by  the granting corporation  at
         the exercise price  if the  optionee ceases  to be  employed by  the
         granting corporation  or  another  Thermo  Electron  company.    The
         repurchase rights are deemed to lapse 20% per year commencing on the
         fifth anniversary of  the grant date.  The granting corporation  may
         exercise  its  repurchase  rights   within  six  months  after   the
         termination of the optionee's  employment. The granting  corporation
         may permit  the  holders of  all  options to  exercise  options  and
         satisfy tax withholding obligations by surrendering shares equal  in
         fair market value to the exercise price or withholding obligation. 
    (2)  The amounts shown  on this table  represent hypothetical gains  that
         could be achieved for the respective options if exercised at the end
         of the option term. These gains are based on assumed rates of  stock
         appreciation of 5% and  10%, compounded annually  from the date  the
         respective options were granted to their expiration date. The  gains
         shown are  net of  the option  exercise price,  but do  not  include
         deductions for taxes or other expenses associated with the exercise.
         Actual gains, if any, on stock  option exercises will depend on  the
         future performance of the Common Stock, the optionholders' continued
         employment through  the option  period  and the  date on  which  the
         options are exercised. 
    (3)  These options  were granted  as a  part of  Thermo Electron's  stock
         option program, and have the same  terms as stated in footnote  (1),
         except that the options  have a three-year  term and the  repurchase
         rights lapse  in their  entirety on  the second  anniversary of  the
         grant date. 

    Stock Options  Exercised  During Fiscal  Year  1996 and  Fiscal  Year-End
    -------------------------------------------------------------------------
    Option Values
    --------------

      The following  table sets  forth certain  information concerning  each
    exercise of  a stock  option  during fiscal  1996 and  outstanding  stock
    options held at the end of fiscal 1996 by the Chief Executive Officer. No
    stock appreciation  rights were  exercised or  outstanding during  fiscal
    1996. 

                Aggregated Option Exercises in Last Fiscal Year
                       and Fiscal Year-End Option Values

                                             Number of     Value of
                                               Shares    Unexercised
                                             Underlying  In-the-Mone
                                            Unexercised   y Options
                                             Options at   at Fiscal
                                               Fiscal      Year-End
                                                           --------
                                              Year-End
                                              --------

                                       43
PAGE
<PAGE>





                           Number
                         of Shares
                          Acquired  Value   Exercisable/ Exercisable
      Name     Company       on    RealizedUnexercisable      /
     -----     -------             ---------------------
                          Exercise              (1)      Unexercisab
                          --------              ---      -----------
                                                              le
                                                              --

    Hal
    Kirshne Trex Medical     -        -      150,000/0   $1,387,500
    r                                                            /-
            ThermoTrex     76,500  $2,079,2   73,000/0   1,809,155/
                                      70                          -
            ThermoLase       -        -       36,400/0
                                                          787,150/-

            Thermo           -        -      116,025/0   2,953,132/
            Electron                                              -

    -------
    (l)  All of the  options reported outstanding  at the end  of the  fiscal
         year are  immediately  exercisable.     In  all  cases,  the  shares
         acquired upon  exercise of  the options  reported in  the table  are
         subject to repurchase  by the granting  corporation at the  exercise
         price if the optionee ceases to  be employed by such corporation  or
         another  Thermo  Electron  company.  The  granting  corporation  may
         exercise  its  repurchase  rights   within  six  months  after   the
         termination  of  the  optionee's  employment.  For  publicly  traded
         companies, the repurchase rights generally lapse ratably over a five
         to ten year  period, depending on  the option term,  which may  vary
         from seven to twelve years, provided that the optionee continues  to
         be employed by the granting  corporation or another Thermo  Electron
         company. 
    (2)  Options to  purchase 22,500  shares of  the common  stock of  Thermo
         Electron granted  to Mr.  Kirshner  are subject  to the  same  terms
         described in footnote (1), except that the repurchase rights of  the
         granting  corporation  generally  do  not  lapse  until  the   tenth
         anniversary of the grant date. In the event of the employee's  death
         or involuntary termination  prior to  the tenth  anniversary of  the
         grant date, the repurchase rights of the granting corporation  shall
         be deemed to have lapsed ratably over a five-year period  commencing
         with the fifth anniversary of the grant date. 

    Employment Agreements

      In connection with the acquisition of the LORAD  Corporation ("LORAD")
    in November 1992, the Company  entered into an employment agreement  with
    Mr. Hal Kirshner.  Mr. Kirshner's  agreement called for  Mr. Kirshner  to
    serve as President and  Chief Operating Officer  of LORAD until  December
    31, 1995, at a base salary of $200,000 per year plus bonus. 


         SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

    Principal Stockholder



                                       44
PAGE
<PAGE>





      The following  table  sets  forth certain  information  regarding  the
    beneficial ownership of the Common Stock  of the Company as of  September
    28, 1996 by  ThermoTrex, which  is the only  person or  entity that  owns
    beneficially more than 5% of the outstanding shares of Common Stock.  See
    "Risk Factors-Control by ThermoTrex." 
                                                     Percentage of
                                       Number of      Outstanding
    Name and Address of Beneficial      Shares           Shares
    ------------------------------
                           Shares                        Shares
                 Owner               Beneficially
                 -----               ------------     ------------
         Beneficially                                 Beneficially
                                                      ------------
                                         Owned           Owned
                                         -----           -----
ned                                                      Owned
                                                         -----

    ThermoTrex Corporation (1)  ....23,562,339 (2)        79%
    10455 Pacific Center Court
    San Diego, CA 92121
    ________
    (l)  ThermoTrex is a  majority-owned subsidiary of  Thermo Electron  and,
         therefore, Thermo Electron may be  deemed a beneficial owner of  the
         shares of  Common Stock  beneficially  owned by  ThermoTrex.  Thermo
         Electron disclaims beneficial ownership of these shares.
    (2)  Includes 678,561 shares of Common Stock issuable upon conversion  of
         the Convertible Note. 

      ThermoTrex has adopted a stock option plan with respect  to the Common
    Stock that it beneficially owns. Under this plan, options to purchase  up
    to 400,000 shares of such stock may  be granted to any person within  the
    discretion of the human resources committee of the Board of Directors  of
    ThermoTrex, including officers and key employees of ThermoTrex. 

    Management

      The following  table  sets  forth certain  information  regarding  the
    beneficial ownership of the Common Stock  of the Company as of  September
    28, 1996 as well as information regarding the beneficial ownership of the
    common stock of ThermoTrex and Thermo Electron, as of September 28, 1996,
    with respect  to (i)  each of  the Company's  directors, (ii)  the  Chief
    Executive Officer, and (iii) all directors and executive officers of  the
    Company as a group. 

      While certain directors and executive officers of the Company are also
    directors and executive officers of ThermoTrex or its subsidiaries  other
    than the Company, all such  persons disclaim beneficial ownership of  the
    shares of Common Stock owned by ThermoTrex.

                               Trex Medical  ThermoTrex    Thermo
              Name(1)          Corporation(
              -------          ------------
                                            Corporation   Electron
- -----------                                 -----------
                                    2)                  Corporation
                                    --                  -----------
                                                (3)     Corporation
                                          -----------
                                                            (4)
                                                            ---

    Gary S. Weinstein  .........  315,000     110,000      150,412
    Anthony J. Pellegrino  .....  146,472     930,621      115,875

    Hal Kirshner  ..............  285,000      92,968      117,184
    Elias P. Gyftopoulos  ......   40,000       4,500       71,070
    John N. Hatsopoulos  .......   40,383       5,423      556,059


                                       45
PAGE
<PAGE>





    Robert C. Howard  ..........   43,674      35,554      192,685

    Earl L. Lewis  .............   40,500         420      131,914
    James W. May, Jr.  .........   40,000           0            0
    Hutham S. Olayan  ..........   45,024       9,500       23,799

    Firooz Rufeh  ..............   83,600     101,788      134,263
    Kenneth Y. Tang  ...........   48,706      79,203       26,204
    All directors and executive
    officers as a group (12      1,134,35    1,380,37    1,664,367
    persons)  ..................        9           7

    _______

    (l)  Except as reflected in the footnotes to this table, shares of Common
         Stock  and   common  stock   of  ThermoTrex   and  Thermo   Electron
         beneficially owned consist of shares  owned by the indicated  person
         or by that person for the  benefit of minor children, and all  share
         ownership involves sole voting and investment power. 

    (2)  Shares of the Common Stock  beneficially owned by  all   directors and
         executive officers as a group exclude 23,562,339 shares beneficially
         owned by ThermoTrex, as to which each director and executive officer
         and all members of such group disclaim beneficial ownership.  Shares
         of the  Common  Stock  beneficially  owned  by  Mr.  Weinstein,  Mr.
         Pellegrino, Mr.  Kirshner,  Dr. Gyftopoulos,  Mr.  Hatsopoulos,  Mr.
         Howard, Mr. Lewis, Dr. May, Ms. Olayan, Mr. Rufeh, Dr. Tang and  all
         directors and executive officers as a group include 300,000, 40,000,
         150,000, 40,000,  40,000, 40,000,  40,000, 40,000,  40,000,  40,000,
         40,000 and 816,000  shares respectively, that  such person or  group
         has the  right to  acquire within  60 days  of September  28,  1996,
         through the exercise of stock options.  Shares beneficially owned by
         Ms. Olayan and by  all directors and executive  officers as a  group
         include 24  shares  allocated  through September  28,  1996  to  Ms.
         Olayan's account  maintained  pursuant  to  the  Company's  deferred
         compensation plan for directors.   Shares beneficially owned by  Ms.
         Olayan do not include 200,000 shares owned by Crescent International
         Holdings Ltd., a member of the Olayan Group. Crescent  International
         Holdings Ltd. is  indirectly controlled  by Suliman  S. Olayan,  Ms.
         Olayan's father. Ms.  Olayan disclaims beneficial  ownership of  the
         shares  owned  by  Crescent  International  Holdings  Ltd.    Shares
         beneficially owned  by Mr.  Rufeh include  19,600 shares  held in  a
         family trust.  No director  or executive officer beneficially  owned
         more than 1%  of the Common  Stock outstanding as  of September  28,
         1996, other than Mr. Weinstein who beneficially owned  approximately
         1.0% of such Common Stock; and all directors and executive  officers
         as a group beneficially owned  3.8% of the Common Stock  outstanding
         as of such date. 

    (3)  Shares of the common stock  of ThermoTrex beneficially owned by  Mr.
         Weinstein,  Mr.  Pellegrino,  Mr.  Kirshner,  Dr.  Gyftopoulos,  Mr.
         Hatsopoulos, Mr. Howard, Ms. Olayan, Mr. Rufeh, Dr. Tang and by  all
         directors  and  executive  officers  as  a  group  include  100,000,
         134,500, 73,000,  4,500, 2,100,  31,320  4,500, 66,000,  63,318  and
         489,638 shares,  respectively, that  such person  or group  has  the

                                       46
PAGE
<PAGE>





         right to acquire within 60 days  of September 28, 1996, through  the
         exercise  of  stock  options.  Shares  beneficially  owned  by   Mr.
         Pellegrino include  10,408  shares held  in  a trust  of  which  Mr.
         Pellegrino's spouse is the trustee. No director or executive officer
         beneficially owned more than  1% of the  common stock of  ThermoTrex
         outstanding as of September 28, 1996, other than Mr. Pellegrino, who
         beneficially owned  approximately 4.8%  of  such common  stock;  all
         directors and executive officers as a group beneficially owned  7.0%
         of such common stock outstanding as of such date. 

    (4)  The shares of common stock of Thermo Electron have been adjusted  to
         reflect a three-for-two stock split effected in May 1996 in the form
         of a  50% stock  dividend.  Shares of  the  common stock  of  Thermo
         Electron beneficially owned  by Mr. Weinstein,  Mr. Pellegrino,  Mr.
         Kirshner, Dr. Gyftopoulos, Mr.  Hatsopoulos, Mr. Howard, Mr.  Lewis,
         Ms. Olayan, Mr. Rufeh, Dr. Tang  and by all directors and  executive
         officers as  a  group  include  150,075,  115,875,  116,025,  9,375,
         429,685,  47,361,  126,937,  9,375,  90,560,  23,850  and  1,216,692
         shares, respectively, that  such person  or group has  the right  to
         acquire within 60 days of  September 28, 1996, through the  exercise
         of stock options.   Shares beneficially owned by  Ms. Olayan and  by
         all directors  and  executive officers  as  a group  include  14,424
         shares allocated through September 28, 1996 to Ms. Olayan's  account
         maintained pursuant to Thermo Electron's deferred compensation  plan
         for directors.   Shares beneficially owned  by Mr. Hatsopoulos,  Mr.
         Howard, Mr. Lewis,  Mr. Rufeh,  Dr. Tang  and by  all directors  and
         executive officers as a group include 1,225, 1,963, 617, 1,142,  538
         and 6,713 full  shares, respectively, allocated  through January  1,
         1996 to  their respective  accounts  maintained pursuant  to  Thermo
         Electron's Employee Stock Ownership   Plan of which the  trustees who
         have investment  power over  its assets  are executive  officers  of
         Thermo Electron.  Shares beneficially  owned by  Ms. Olayan  do  not
         include 4,384,500 shares owned by Crescent Holding GmbH, a member of
         the Olayan Group. Crescent Holding GmbH is indirectly controlled  by
         Suliman  S.  Olayan,  Ms.  Olayan's  father.  Ms.  Olayan  disclaims
         beneficial ownership of the shares  owned by Crescent Holding  GmbH.
         No director or executive officer beneficially owned more than 1%  of
         the common stock of Thermo Electron outstanding as of September  28,
         1996; all directors and executive  officers as a group  beneficially
         owned  1.1% of the common stock of Thermo Electron outstanding as of
         September 28, 1996. 


                              SELLING SHAREHOLDERS

       The following table shows the names of the Selling Shareholders, the
    number of shares of the Company's Common Stock each owned, the number of
    shares that may be offered by each of them pursuant to this Prospectus
    and the number of Shares each will own after completion of the offering,
    assuming all of the Shares being offered hereby are sold.






                                       47
PAGE
<PAGE>





                                        Shares of
                                      Common Stock Shares  Shares Owned
                                       Owned Prior Being       after
             Selling Shareholder         to the    Offered Completion of
             -------------------            ---    -------            --
                                       Offering(1)         the Offering
                                       -----------         ------------

         Wessel Corporation N.V.           100,000  100,00            0 
                                                         0
         Thermo Opportunity Fund,           50,000  50,000            0 
        Inc.
         Primespecial                       20,000  20,000            0 

         John D. Bryan                      20,000  20,000            0 
         Union Bancaire Privee              18,000  18,000            0 
         Robert E. Kirby                    15,000  15,000            0 

         Yiska Moser Trust                  15,000  15,000            0 
         George & Elizabeth Harvey          10,000  10,000            0 
         Myles Tanenbaum                    10,000  10,000            0 

         Frank Argano                       10,000  10,000            0 
         Joseph N. Cunningham               10,000  10,000            0 
         Howard Blitman                     10,000  10,000            0 

         Gestielle B                         5,000   5,000            0 
         BCI Dollar Equity                   5,000   5,000            0 

         Gestielle America                   2,000   2,000            0 


    (1)  Except as otherwise reflected in the footnotes to this table, all
         share ownership includes Shares owned by the Selling Shareholders
         and shares that the Selling Shareholders have the right to acquire

         within 60 days of September 28, 1996, through the exercise of stock
         options.

       The Shares are being registered to permit public secondary trading of
    the Shares from time to time by the Selling Shareholders.  All of the
    Shares being offered by the Selling Shareholders were sold by the Company
    in private placement transactions pursuant to Stock Purchase Agreements
    with the Company dated December 19, 1996  (collectively, the "Purchase
    Agreements").

       In the Purchase Agreements, the Company agreed, among other things,
    to bear all expenses (other than underwriting discounts, selling
    commissions, and fees and expenses of counsel and other advisors to the
    Selling Shareholders) in connection with the registration and sale of the
    Shares being offered by the Selling Shareholders. See "Sale of Shares."
    The Company has agreed to prepare and file such amendments and
    supplements to the Registration Statement of which this Prospectus forms
    a part as may be necessary to keep the Registration Statement effective
    until all the Shares offered hereby have been sold pursuant thereto or
    until such Shares are no longer, by reason of Rule 144(k) under the


                                       48
PAGE
<PAGE>





    Securities Act or any other rule of similar effect, required to be
    registered for the public sale thereof by the Selling Shareholders.


                                 SALE OF SHARES

       The Company has been advised that the Selling Shareholders may sell
    Shares from time to time in transactions on the American Stock Exchange,
    in negotiated transactions, through the writing of options on the Shares,
    or a combination of such methods of sale, at fixed prices which may be
    changed, at market prices prevailing at the time of sale, at prices
    related to such prevailing market price or at negotiated prices.  The
    Selling Shareholders may effect such transactions by selling the Shares
    to or through broker-dealers, and such broker-dealers may receive
    compensation in the form of discounts, concessions or commissions from
    the Selling Shareholders and/or the purchasers of the Shares for whom
    such broker-dealers may act as agent or to whom they sell as principal,
    or both (which compensation to a particular broker-dealer might be in
    excess of customary commissions).

       The Selling Shareholders and any broker-dealers who act in connection
    with the sale of Shares hereunder may be deemed to be "underwriters" as
    that term is defined in the Securities Act, and any commissions received
    by them and profit on any resale of the Shares as principal might be
    deemed to be underwriting discounts and commissions under the Securities
    Act.  The Company has agreed to indemnify the Selling Shareholders
    against certain liabilities, including liabilities under the Securities
    Act as underwriter or otherwise.


                          DESCRIPTION OF CAPITAL STOCK

      As of December 20  , 1996, the Company  had 50,000,000 shares of Common
    Stock authorized  for  issuance,  of which  28,8   92,630 were  issued  and
    outstanding.  Each  share  of  Common  Stock  is  entitled  to  pro  rata
    participation in distributions upon  liquidation and to  one vote on  all
    matters submitted to a vote of shareholders. Dividends may be paid to the
    holders of Common Stock  when and if declared  by the Board of  Directors
    out of funds legally available therefor. Holders of Common Stock have  no
    preemptive, subscription, redemption, conversion  or similar rights.  The
    outstanding shares of  Common Stock  are, and the  shares offered  hereby
    when issued will be, legally issued, fully paid and nonassessable. 

      The shares  of Common  Stock have  noncumulative voting  rights. As  a
    result, the holders of more than 50%  of the shares voting can elect  all
    the directors if they so  choose, and in such  event, the holders of  the
    remaining shares  cannot  elect any  directors.  Upon completion  of  the
    Offerings, ThermoTrex  will  continue  to beneficially  own  at  least  a
    majority of the  outstanding Common  Stock, and  will have  the power  to
    elect all of the members of the Company's Board of Directors.  ThermoTrex
    is a majority-owned subsidiary of Thermo Electron and, therefore,  Thermo
    Electron may be deemed a beneficial  owner of the shares of Common  Stock
    beneficially owned by  ThermoTrex. Thermo  Electron disclaims  beneficial
    ownership of these shares. 


                                       49
PAGE
<PAGE>





      The Company's Certificate of Incorporation contains certain provisions
    permitted under the General Corporation  Law of Delaware relating to  the
    liability of directors. These provisions eliminate a director's liability
    for monetary damages for  a breach of fiduciary  duty, except in  certain
    circumstances involving wrongful acts, such as the breach of a director's
    duty of loyalty or acts or omissions which involve intentional misconduct
    or a  knowing  violation of  law.  The Company's  By-Laws  also  contains
    provisions to indemnify the directors and officers of the Company to  the
    fullest extent permitted by the General Corporation Law of Delaware.  The
    Company believes  that  these  provisions  will  assist  the  Company  in
    attracting and retaining qualified individuals to serve as directors  and
    officers. 

      The transfer  agent and  registrar for  the Common  Stock is  American
    Stock Transfer & Trust Company. 


                        SHARES ELIGIBLE FOR FUTURE SALE

       There are currently 28,892,630 shares of Common Stock outstanding of
    which 6,008,832 are freely tradable without restriction or further
    registration under the Securities Act, except for any shares purchased by
    affiliates of the Company as that term is defined in Rule 144 under the
    Securities Act.

       The remaining 22,883,798 outstanding shares of Common Stock are owned
    by ThermoTrex. ThermoTrex may sell its shares of Common Stock in an
    offering registered under the Securities Act or pursuant to an exemption
    from such registration, such as that provided by Rule 144 under the
    Securities Act. So long as ThermoTrex is able to elect a majority of the
    Board of Directors it will be able to cause the Company at any time to
    register under the Securities Act all or a portion of the Common Stock
    owned by ThermoTrex or its affiliates, in which case it would be able to
    sell such shares without restriction upon effectiveness of the
    registration statement. 

      In general,  under Rule  144 as  currently in  effect,  a stockholder,
    including an affiliate, who has beneficially owned his or her  restricted
    securities (as that term is defined in  Rule 144) for at least two  years
    from the later of the date such securities were acquired from the Company
    or (if applicable)  the date  they were  acquired from  an affiliate,  is
    entitled to sell, within any three-month period, a number of such  shares
    that does not exceed the greater of (i) 1% of the then outstanding shares
    of Common Stock (approximately 288,926 shares) or (ii) the average weekly
    trading volume  in  the  Common  Stock during  the  four  calendar  weeks
    preceding the date  on which notice  of such sale  was filed pursuant  to
    Rule 144 provided certain requirements concerning availability of  public
    information, manner  of  sale  and  notice  of  sale  are  satisfied.  In
    addition, under Rule  144(k), if  a period of  at least  three years  has
    elapsed between the later of the date restricted securities were acquired
    from the Company or (if applicable)  the date they were acquired from  an
    affiliate of the Company,  a stockholder who is  not an affiliate of  the
    Company at the time of sale and has not been an affiliate of the  Company
    for at least  three months  prior to  the sale  is entitled  to sell  the
    shares immediately  without compliance  with the  foregoing  requirements

                                       50
PAGE
<PAGE>





    under Rule 144. The  Securities and Exchange  Commission has proposed  an
    amendment to Rule 144 which would reduce the holding period required  for
    shares subject to  Rule 144  to become eligible  for sale  in the  public
    market from two years to one year,  and from three years to two years  in
    the case of Rule 144(k). 

      The Company has reserved 1,925,000  shares of Common Stock  for grants
    under its existing  stock-based compensation plans.  As of September  28,
    1996 the  Company had  options outstanding  to purchase  up to  1,381,000
    shares of  Common  Stock  to  certain  of  its  employees,  officers  and
    directors at a weighted average exercise  price of $11.14 per share.  All
    of such shares  are currently  exercisable.  Once  exercised, the  shares
    acquired upon  exercise  are subject  to  the  right of  the  Company  to
    repurchase shares at  the exercise  price if  the optionee  ceases to  be
    employed by  the Company.  This repurchase  right lapses  ratably (on  an
    annual basis) over a five to ten  year period depending upon the term  of
    the option. As of September 28, 1996, the repurchase right had lapsed  as
    to no shares issuable upon  exercise of outstanding options. The  Company
    has reserved 543,976 shares  for future grants  under plans. The  Company
    intends to  file  registration statements  under  the Securities  Act  to
    register all shares  of Common  Stock issuable under  such plans.  Shares
    covered  by  these  registration  statements  that  are  not  subject  to
    transferability restrictions  will be  eligible for  sale in  the  public
    market immediately  upon  the  filing of  such  registration  statements,
    subject to Rule 144 limitations applicable to affiliates as noted above. 

      Sales of significant  numbers of  shares of  the Common  Stock in  the
    public market could adversely affect the market price of the Common Stock
    and could impair the Company's future ability to raise capital through an
    offering  of  its  equity   securities.  See  "Risk   Factors-Significant
    Additional Shares Eligible for Future Sale." 


                                 LEGAL OPINIONS

      The validity  of the  issuance  of the  Common  Stock offered  in  the
    Offerings will be passed upon for the Company by Seth H. Hoogasian, Esq.,
    General Counsel  of Thermo  Electron, ThermoTrex  and the  Company.   Mr.
    Hoogasian owns or has the right to acquire 6,000 shares of Common  Stock,
    7,800 shares of common stock of  ThermoTrex and 115,927 shares of  common
    stock of Thermo Electron. 

                                    EXPERTS

      The Consolidated Financial Statements of the Company  included in this
    Prospectus  and  the  financial   statement  schedule  included  in   the
    Registration Statement of which  this Prospectus forms  a part have  been
    audited by Arthur  Andersen LLP, independent  public accountants, to  the
    extent and for  the periods as  indicated in their reports with respect
    thereto, and are included herein in  reliance upon the authority of  said
    firm as experts in accounting and auditing in giving said reports. 

                             ADDITIONAL INFORMATION


                                       51
PAGE
<PAGE>





      The Company has filed with the Securities and Exchange Commission (the
    "Commission") a  Registration Statement  (which  term shall  include  all
    amendments, exhibits  and  schedules  thereto)  on  Form  S-1  under  the
    Securities Act with respect to the shares of Common Stock offered hereby.
    This Prospectus, which constitutes a part of the Registration  Statement,
    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, to which Registration  Statement
    reference is hereby made. Although statements made in this Prospectus  as
    to the contents of any contract, agreement or other document referred  to
    set forth all material  elements of such  documents, such statements  are
    not necessarily complete. With respect  to each such contract,  agreement
    or other  document filed  as an  exhibit to  the Registration  Statement,
    reference is made to the exhibit  for a more complete description of  the
    matter involved,  and each  such statement,  although setting  forth  all
    material elements of such  documents, shall be  deemed qualified by  such
    reference. The Registration  Statement and  the exhibits  thereto may  be
    inspected  and  copied  at  prescribed  rates  at  the  public  reference
    facilities maintained by  the Commission at  Room 1024, Judiciary  Plaza,
    450 Fifth  Street,  N.W., Washington,  D.C.  20549 and  at  the  regional
    offices of  the Commission  located  at Seven  World Trade  Center,  13th
    Floor, New York, New York 10048 and 500 West Madison Street, Suite  1400,
    Chicago, Illinois 60661. In addition, the Commission maintains a Web site
    (http://www.sec.gov)  that  contains   reports,  proxy  and   information
    statements and other information regarding registrants































                                       52
PAGE
<PAGE>





                          INDEX TO FINANCIAL STATEMENTS

    Trex Medical Corporation

        Report of Independent Public Accountants                          F-2

        Consolidated Statement of Income for the years ended
         September 28, 1996 and September 30, 1995, the nine
         months ended September 30, 1995 and the year ended
         December 31, 1994                                                F-3

        Consolidated Balance Sheet as of September 28, 1996 and
         September 30, 1995                                               F-4

        Consolidated Statement of Cash Flows for the years ended
         September 28, 1996 and September 30, 1995, the nine
         months ended September 30, 1995 and the year ended
         December 31, 1994                                                F-5

        Consolidated Statement of Shareholders' Investment for
         the years ended September 28, 1996 and September 30, 
         1995, the nine months ended September 30, 1995 and 
         the year ended December 31, 1994                                 F-7

        Notes to Consolidated Financial Statements                        F-8































                                     F-1F-3
PAGE
<PAGE>


        Report of Independent Public Accountants
        -----------------------------------------------------------------


    To the Shareholders and Board of Directors of Trex Medical Corporation:

         We have audited the accompanying consolidated balance sheet of Trex
    Medical Corporation (a Delaware corporation and 80%-owned subsidiary of
    ThermoTrex Corporation) and subsidiaries as of September 28, 1996 and
    September 30, 1995, and the related consolidated statements of income,
    shareholders' investment and cash flows for the year ended September 28,
    1996, the nine months ended September 30, 1995, and the year ended
    December 31, 1994. These consolidated financial statements are the
    responsibility of the Company's management. Our responsibility is to
    express an opinion on these consolidated 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 consolidated financial statements referred to
    above present fairly, in all material respects, the financial position of
    Trex Medical Corporation and subsidiaries as of September 28, 1996 and
    September 30, 1995, and the results of their operations and their cash
    flows for the year ended September 28, 1996, the nine months ended
    September 30, 1995, and the year ended December 31, 1994, in conformity
    with generally accepted accounting principles.



                                                   Arthur Andersen LLP



    Boston, Massachusetts
    November 1, 1996
















                                    F-2F-2F-4
PAGE
<PAGE>


        Trex Medical Corporation
        Consolidated Statement of Income

                                                     Nine Months
                                   Year Ended           Ended     Year
                              ---------------------  -----------  ----------
                            Ended
    (In thousands except)     Sept. 28,   Sept. 30,    Sept. 30,    Dec. 31,
    per share amounts)             1996        1995         1995        1994
    ------------------------------------------------------------------------
                                         (Unaudited)

    Revenues (includes $8,910,
      $470, $470 and $0 to
      affiliated companies)
      (Notes 9 and 10)         $150,195    $ 70,505    $ 55,291    $ 54,410
                               --------    --------    --------    --------

    Costs and Operating
      Expenses:
      Cost of revenues 
      (includes $4,698, $223,
        $223 and $0 for 
        affiliated companies
        revenues) (Note 9)       86,642      36,320      28,180      27,794
      Selling, general and
        administrative
        expenses (Note 9)        27,156      15,652      12,174      13,272
      Research and development
        expenses (Note 9)        18,862      11,937       8,595      10,662
                               --------    --------    --------    --------

                                132,660      63,909      48,949      51,728
                               --------    --------    --------    --------

    Operating Income             17,535       6,596       6,342       2,682

    Interest Income               1,290           -           -           -
    Interest Expense, Related
      Party (Note 9)             (1,373)          -           -           -
    Other Income (Expense), Net      60          11          22         (22)
                               --------    --------    --------    --------

    Income Before Provision for
      Income Taxes               17,512       6,607       6,364       2,660
    Provision for Income Taxes
      (Note 7)                    8,168       3,015       2,881       1,466
                               --------    --------    --------    --------

    Net Income                 $  9,344    $  3,592    $  3,483    $  1,194
                               ========    ========    ========    ========

    Earnings per Share:
      Primary                  $    .40    $    .18    $    .17    $    .06
                               ========    ========    ========    ========
      Fully diluted            $    .38    $    .18    $    .17    $    .06
                               ========    ========    ========    ========

    Weighted Average Shares:
      Primary                    23,483      20,151      20,151      20,151
                               ========    ========    ========    ========
      Fully diluted              26,550      20,151      20,151      20,151
                               ========    ========    ========    ========
    The accompanying notes are an integral part of these consolidated
    financial statements.


                                       F-5
PAGE
<PAGE>


        Trex Medical Corporation
        Consolidated Balance Sheet

                                                September 28,  September 30,
    (In thousands except share amounts)                  1996           1995
    ------------------------------------------------------------------------

    Assets
    Current Assets:
      Cash and cash equivalents                      $ 33,966       $    202
      Accounts receivable, less allowances
        of $1,264 and $870                             29,104         14,937
      Inventories                                      33,010         16,667
      Prepaid expenses                                  1,316            113
      Prepaid income taxes (Note 7)                     5,712          3,474
                                                     --------       --------
                                                      103,108         35,393
                                                     --------       --------

    Property, Plant and Equipment, at Cost, Net        13,770          7,811
                                                     --------       --------
    Cost in Excess of Net Assets of Acquired
      Companies (Note 3)                               83,972         59,170
                                                     --------       --------

                                                     $200,850       $102,374
                                                     ========       ========

    Liabilities and Shareholders' Investment
    Current Liabilities:
      Accounts payable                               $ 12,598       $  7,381
      Accrued payroll and employee benefits             4,616          2,338
      Accrued warranty costs                            5,344          2,991
      Customer deposits                                 3,414            771
      Accrued income taxes                              2,010              -
      Other accrued expenses (Note 3)                  12,203          8,245
      Due to affiliated companies                       3,089            496
                                                     --------       --------
                                                       43,274         22,222
                                                     --------       --------

    Deferred Income Taxes (Note 7)                        170            142
                                                     --------       --------
    Long-term Obligations:
      4.2% Subordinated convertible note, due
        to parent company (Note 9)                      8,000              -
      Other                                               109              -
                                                     --------       --------
                                                        8,109              -
                                                     --------       --------

    Commitments and Contingencies
      (Notes 3, 8, 9 and 11)

    Shareholders' Investment (Notes 4 and 5):
      Common stock, $.01 par value, 50,000,000
        shares authorized; 28,592,630 shares
        issued and outstanding in 1996                    286              -
      Capital in excess of par value                  139,667              -
      Retained earnings                                 9,344              -
      Net parent company investment                         -         80,010
                                                     --------       --------
                                                      149,297         80,010
                                                     --------       --------

                                                     $200,850       $102,374
                                                     ========       ========
    The accompanying notes are an integral part of these consolidated
    financial statements.


                                       F-6
PAGE
<PAGE>


        Trex Medical Corporation
        Consolidated Cash Flows

                                                                             
                                                    Nine Months
                                   Year Ended          Ended     Yea
                              --------------------- -----------  ----
                                                                      Ended
                                                                     ------
                              Sept. 28,   Sept. 30,   Sept. 30,    Dec. 31,
    (In thousands)                 1996        1995        1995        1994
    -----------------------------------------------------------------------
                                         (Unaudited)
    Operating Activities:
      Net income               $  9,344    $  3,592   $  3,483    $  1,194
      Adjustments to reconcile
        net income to net cash
        provided by operating
        activities:
          Depreciation and
            amortization          3,195       1,702      1,315       1,491
          Provision for losses
            on accounts
            receivable              273          75         25         175
          Increase (decrease)
            in deferred income
            taxes                   (26)         61         29          32
          Gain on sale of
            property, plant
            and equipment           (32)        (15)       (15)          -
          Changes in current
            accounts, exclud-
            ing the effects
            of acquisitions:
              Accounts
                receivable       (7,681)     (1,305)      (693)     (3,316)
              Inventories        (2,105)       (533)    (1,476)        153
              Other current
                assets           (1,835)         (6)       (82)        125
              Accounts payable      106       2,342        621       1,861
              Other current
                liabilities       4,711      (1,139)       444         411
                               --------    --------   --------    --------

      Net cash provided by
        operating activities      5,950       4,774      3,651       2,126
                               --------    --------   --------    --------

    Investing Activities:
      Acquisitions, net of cash
        acquired (Note 3)       (36,888)          -          -           -
      Purchases of property,
        plant and equipment      (3,071)     (1,533)      (957)     (1,300)
      Other, net                     16          14         14          29
                               --------    --------   --------    --------

      Net cash used in
        investing activities   $(39,943)   $ (1,519)  $   (943)   $ (1,271)
                               --------    --------   --------    --------








                                       F-7
PAGE
<PAGE>


        Trex Medical Corporation
        Consolidated Cash Flows (continued)


                                                     Nine Months
                                   Year Ended           Ended     Year
                             ----------------------  -----------  ----
                                                                       Ended
                                                      ------
                             Sept. 28,    Sept. 30,    Sept. 30,    Dec. 31,
    (In thousands)                1996         1995         1995        1994
    ------------------------------------------------------------------------
                                         (Unaudited)
    Financing Activities:
      Net proceeds from
        issuance of Company
        common stock (Note 4) $ 67,757     $      -    $      -     $      -
      Net transfers to parent
        company                      -       (3,053)     (2,506)        (855)
                              --------     --------    --------     --------

      Net cash provided by
        (used in) financing
        activities              67,757       (3,053)     (2,506)        (855)
                              --------     --------    --------     --------

    Increase in Cash and
      Cash Equivalents          33,764          202         202            -
    Cash and Cash Equivalents
      at Beginning of Period       202            -           -            -
                              --------     --------    --------     --------

    Cash and Cash Equivalents
      at End of Period        $ 33,966     $    202    $    202     $      -
                              ========     ========    ========     ========

    Cash Paid For:
      Interest                $  1,373     $      -    $      -     $      -
      Income taxes            $  1,294     $      -    $      -     $      -

    Noncash Activities:
      Fair value of assets of
        acquired companies    $ 53,519     $      -    $      -     $      -
      Cash paid for acquired
        companies              (38,178)           -           -            -
                              --------     --------    --------     --------
          Liabilities assumed
           of acquired
           companies          $ 15,341     $      -    $      -     $      -
                              ========     ========    ========     ========
      Transfer of acquired
        business from
        parent company, net
        of cash               $      -     $ 42,000    $ 42,000     $      -
      Issuance of subordinated
        convertible note to
        parent company        $ 42,000     $      -    $      -     $      -
      Conversions of subord-
        inated convertible
        note by parent
        company               $ 34,000     $      -    $      -     $      -


    The accompanying notes are an integral part of these consolidated
    financial statements.


                                       F-8
PAGE
<PAGE>


        Trex Medical Corporation
        Consolidated Shareholders' Investment



                                    Common    Capital
                                    Stock,  in Excess             Net Parent
                                  $.01 Par     of Par    Retained    Company
    (In thousands)                   Value      Value    Earnings Investment
    ------------------------------------------------------------------------

    Balance January 1, 1994      $      -   $      -    $      -    $ 36,694
    Net income                          -          -           -       1,194
    Net transfers to parent
      company                           -          -           -        (855)
                                 --------   --------    --------    --------

    Balance December 31, 1994           -          -           -      37,033
    Net income                          -          -           -       3,483
    Net transfers to parent
      company                           -          -           -      (2,506)
    Transfer of acquired
      business from parent
      company, net of cash
      (Note 3)                          -          -           -      42,000
                                 --------   --------    --------    --------

    Balance September 30, 1995          -          -           -      80,010
    Issuance of subordinated
      convertible note to parent
      company (Note 9)                  -    (42,000)          -           -
    Capitalization of Company         200     79,810           -     (80,010)
    Net income                          -          -       9,344           -
    Net proceeds from issuance
      of Company common stock
      (Note 4)                         57     67,700           -           -
    Tax benefit related to
      employees' and directors'
      stock plans                       -        186           -           -
    Conversions of subordinated
      convertible note by parent
      company (Note 4)                 29     33,971           -           -
                                 --------   --------    --------    --------

    Balance September 28, 1996   $    286   $139,667    $  9,344    $      -
                                 ========   ========    ========    ========


    The accompanying notes are an integral part of these consolidated
    financial statements.
                                          












                                       F-9
PAGE
<PAGE>


        Trex Medical Corporation
        Notes to Consolidated Financial Statements

    1.   Nature of Operations and Summary of Significant Accounting Policies

    Nature of Operations

         Trex Medical Corporation (the Company) designs, manufactures, and
    markets mammography equipment and minimally invasive stereotactic breast-
    biopsy systems used for the detection of breast cancer. The Company also
    designs and manufactures general radiography (X-ray) equipment and X-ray
    imaging systems used for cardiac catheterization and angiography, as well
    as radiographic fluoroscopy. The Company's mammography and stereotactic
    breast-biopsy systems are used by radiologists and physicians in offices,
    hospitals, and dedicated breast-care centers, and its general X-ray
    systems are used by physicians and radiologists, both in office and
    hospital settings, as well as by veterinarians and chiropractors.

    Relationship with ThermoTrex Corporation and Thermo Electron Corporation

         The Company was incorporated in September 1995 as a wholly owned
    subsidiary of ThermoTrex Corporation (ThermoTrex). On October 2, 1995,
    ThermoTrex transferred to the Company all of the outstanding shares of
    capital stock of Bennett X-Ray Corporation (Bennett), in exchange for a
    $42.0 million principal amount 4.2% subordinated convertible note
    (Note 9). As of September 28, 1996, ThermoTrex had converted $34.0
    million principal amount of this note. On October 16, 1995, ThermoTrex
    transferred to the Company the assets, liabilities, and businesses of
    ThermoTrex's Lorad division (Lorad) and ThermoTrex's research and
    development activities pertaining to its Sonic CT(TM) system, in exchange
    for 20,000,000 shares of the Company's common stock. ThermoTrex acquired
    Lorad and Bennett in November 1992 and September 1995, respectively.

         As of September 28, 1996, ThermoTrex owned 22,883,798 shares of the
    Company's common stock, representing 80% of such stock outstanding.
    ThermoTrex is a 51%-owned subsidiary of Thermo Electron Corporation
    (Thermo Electron).

    Principles of Consolidation

         The accompanying financial statements include the accounts of the
    Company and its wholly owned subsidiaries. All material intercompany
    accounts and transactions have been eliminated.

    Fiscal Year

         In September 1995, the Company changed its fiscal year end from the
    Saturday nearest December 31 to the Saturday nearest September 30.
    Accordingly, the Company's transition period, which ended on September
    30, 1995, was the 39-week period from January 1, 1995 to September 30,
    1995, referenced as "fiscal 1995." References to "fiscal 1996" and "1994"
    are for the years ended September 28, 1996 and December 31, 1994,
    respectively. Fiscal 1996 and 1994 each included 52 weeks. The unaudited
    consolidated statements of income and cash flows for the 52-week period
    ended September 30, 1995 are presented for comparative purposes only.




                                      F-10
PAGE
<PAGE>


        Trex Medical Corporation
        Notes to Consolidated Financial Statements

    1.   Nature of Operations and Summary of Significant Accounting Policies
         (continued)

    Revenue Recognition

         The Company recognizes revenues upon shipment of its products. The
    Company provides a reserve for its estimate of warranty costs at the time
    of shipment.

    Concentration of Credit Risk

         The Company sells its products primarily to customers in the
    healthcare industry. The Company does not normally require collateral or
    other security to support its accounts receivable. Management does not
    believe that this concentration of credit risk has, or will have, a
    significant negative impact on the Company.

    Income Taxes

         The Company and ThermoTrex have a tax allocation agreement under
    which the Company is included in the consolidated income tax returns
    filed by ThermoTrex. The agreement provides that in years in which the
    Company has taxable income, it will pay to ThermoTrex amounts comparable
    to the taxes the Company would have paid upon filing separate tax
    returns. If ThermoTrex's equity ownership of the Company were to decrease
    below 80%, the Company would file its own income tax returns.

         In accordance with Statement of Financial Accounting Standards
    (SFAS) No. 109, "Accounting for Income Taxes," the Company recognizes
    deferred income taxes based on the expected future tax consequences of
    differences between the financial statement basis and the tax basis of
    assets and liabilities, calculated using enacted tax rates in effect for
    the year in which the differences are expected to be reflected in the tax
    return.

    Earnings per Share

         Earnings per share have been computed based on the weighted average
    number of shares outstanding during the period. Pursuant to Securities
    and Exchange Commission requirements, earnings per share have been
    presented for all periods. Weighted average shares for all periods
    include the 20,000,000 shares issued to ThermoTrex in connection with the
    initial capitalization of the Company and, for periods prior to the
    Company's initial public offering, the effect of the assumed exercise of
    stock options issued within one year prior to the Company's initial
    public offering. Because the effect of common stock equivalents would be
    immaterial, they have been excluded from the primary earnings per share
    calculation subsequent to the Company's initial public offering. Fully
    diluted earnings per share include the assumed exercise of stock options
    and the assumed effect of the conversion of the Company's 4.2%
    subordinated convertible note, due to parent company.





                                      F-11
PAGE
<PAGE>


        Trex Medical Corporation
        Notes to Consolidated Financial Statements

    1.   Nature of Operations and Summary of Significant Accounting Policies
         (continued)

    Cash and Cash Equivalents

         As of September 28, 1996, $32,696,000 of the Company's cash
    equivalents were invested in a repurchase agreement with Thermo Electron.
    Under this agreement, the Company in effect lends excess cash to Thermo
    Electron, which Thermo Electron collateralizes with investments
    principally consisting of corporate notes, U.S. government agency
    securities, money market funds, commercial paper, and other marketable
    securities, in the amount of at least 103% of such obligation. The
    Company's funds subject to the repurchase agreement are readily
    convertible into cash by the Company. The repurchase agreement earns a
    rate based on the 90-day Commercial Paper Composite Rate plus 25 basis
    points, set at the beginning of each quarter. 

         Prior to its incorporation in September 1995, the Company's cash
    receipts and disbursements were combined with other ThermoTrex corporate
    cash transactions and balances.

    Inventories

         Inventories are stated at the lower of cost (on a first-in,
    first-out basis) or market value and include materials, labor, and
    manufacturing overhead. The components of inventories are as follows:

    (In thousands)                                         1996       1995
    ----------------------------------------------------------------------

    Raw materials and supplies                          $20,513    $ 9,414
    Work in process                                       9,218      5,195
    Finished goods                                        3,279      2,058
                                                        -------    -------

                                                        $33,010    $16,667
                                                        =======    =======





















                                      F-12
PAGE
<PAGE>


        Trex Medical Corporation
        Notes to Consolidated Financial Statements

    1.   Nature of Operations and Summary of Significant Accounting Policies
         (continued)

    Property, Plant and Equipment

         The costs of additions and improvements are capitalized, while
    maintenance and repairs are charged to expense as incurred. The Company
    provides for depreciation and amortization principally using the
    straight-line method over the estimated useful lives of the property as
    follows: buildings, 29 to 31.5 years; machinery and equipment, 3 to 8
    years; and leasehold improvements, the shorter of the term of the lease
    or the life of the asset. Property, plant and equipment consist of the
    following: 

    (In thousands)                                         1996       1995
    ----------------------------------------------------------------------

    Land                                                $ 1,194     $1,000
    Buildings                                             3,788      2,728
    Leasehold improvements                                2,195      1,293
    Machinery and equipment                              10,082      4,918
                                                        -------     ------

                                                         17,259      9,939
    Less: Accumulated depreciation and amortization       3,489      2,128
                                                        -------     ------

                                                        $13,770     $7,811
                                                        =======     ======

    Cost in Excess of Net Assets of Acquired Companies

         The excess of cost over the fair value of net assets of acquired
    companies is amortized using the straight-line method over 40 years.
    Accumulated amortization was $3,621,000 and $1,935,000 as of September
    28, 1996 and September 30, 1995, respectively. The Company assesses the
    future useful life of this asset whenever events or changes in
    circumstances indicate that the current useful life has diminished. The
    Company considers the future undiscounted cash flows of the acquired
    businesses in assessing the recoverability of this asset.

    Use of Estimates

         The preparation of financial statements in conformity with generally
    accepted accounting principles requires management to make estimates and
    assumptions that affect the reported amounts of assets and liabilities,
    disclosure of contingent assets and liabilities at the date of the
    financial statements, and the reported amounts of revenues and expenses
    during the reporting period. Actual results could differ from those
    estimates.









                                      F-13
PAGE
<PAGE>


        Trex Medical Corporation
        Notes to Consolidated Financial Statements

    2.   Unaudited Comparative Results

         The following unaudited financial information for the nine months
    ended October 1, 1994 is presented to provide comparative results for
    fiscal 1995, included in the accompanying statement of income.

                                                                   Nine
                                                               Months Ended
                                                                October 1,
    (In thousands except per share amounts)                        1994    

    Revenues                                                     $39,196

    Costs and Operating Expenses:
      Cost of revenues                                            19,654
      Selling, general and administrative
        expenses                                                   9,794
      Research and development expenses                            7,320
                                                                 -------

                                                                  36,768
                                                                 -------

    Operating Income                                               2,428

    Other Expense, Net                                               (11)
                                                                 -------

    Income Before Provision for Income Taxes                       2,417

    Provision for Income Taxes                                     1,332
                                                                 -------

    Net Income                                                   $ 1,085
                                                                 =======

    Earnings per Share:
      Primary                                                    $   .05
                                                                 =======
      Fully diluted                                              $   .05
                                                                 =======

    Weighted Average Shares:
      Primary                                                     20,151
                                                                 =======
      Fully diluted                                               20,151
                                                                 =======


    3.   Acquisitions

         In September 1996, the Company acquired substantially all of the
    assets and liabilities of Continental X-Ray Corporation and affiliates
    (Continental), an Illinois-based company that designs, manufactures, and
    markets general-purpose and specialized X-ray systems, for approximately
    $18.4 million in cash, net of cash acquired and including the repayment
    of debt.



                                      F-14
PAGE
<PAGE>


        Trex Medical Corporation
        Notes to Consolidated Financial Statements

    3.   Acquisitions (continued)

         In May 1996, the Company acquired substantially all of the assets
    and liabilities of XRE Corporation (XRE), a Massachusetts-based company
    that designs, manufactures, and markets X-ray imaging systems used in the
    diagnosis and treatment of coronary artery disease and other vascular
    conditions, for approximately $18.5 million in cash, net of cash acquired
    and including the repayment of debt.

         In September 1995, ThermoTrex acquired all of the outstanding
    capital stock of Bennett, a New York-based manufacturer of high-frequency
    specialty and general-purpose X-ray systems, for approximately $42.9
    million in cash. On October 2, 1995, ThermoTrex transferred to the
    Company all of the outstanding capital stock of Bennett, in exchange for
    a $42.0 million principal amount 4.2% subordinated convertible note
    (Note 9). 

         These acquisitions have been accounted for using the purchase
    method of accounting, and their results of operations have been included
    in the accompanying financial statements from their respective dates of
    acquisition by the Company, or for Bennett, by ThermoTrex. The cost of
    the acquisitions exceeded the estimated fair value of the acquired net
    assets by $64.0 million, which is being amortized over 40 years.
    Allocation of the purchase price for these acquisitions was based on
    estimates of the fair value of the net assets acquired and, for XRE and
    Continental, is subject to adjustment upon finalization of the purchase
    price allocation. To date, no information has been gathered that would
    cause the Company to believe that the final allocation of the purchase
    price will be materially different from the preliminary estimate.

         Based on unaudited data, the following table presents selected
    financial information for the Company and the businesses acquired on a
    pro forma basis, assuming Continental and XRE had been combined since the
    beginning of 1995 and Bennett had been combined since the beginning of
    1994. 

                                                     Nine
                                  Year Ended     Months Ended    Year Ended
    (In thousands except         September 28,   September 30,  December 31,
    per share amounts)                1996            1995          1994
    ------------------------------------------------------------------------

    Revenues                        $191,351        $126,185        $96,943
    Net income (loss)                  9,300           2,012         (1,258)
    Earnings (loss) per share:
      Primary                            .29             .07           (.06)
      Fully diluted                      .29             .07           (.06)

         The pro forma results are not necessarily indicative of future
    operations or the actual results that would have occurred had the
    acquisitions of XRE and Continental been made at the beginning of fiscal
    1995 and the acquisition of Bennett been made at the beginning of 1994.

         In November 1992, ThermoTrex acquired Lorad for $5.3 million in
    cash, assumption of $6.7 million of pre-existing debt of Lorad, and
    shares of ThermoTrex common stock and stock options valued at $12.3

                                      F-15
PAGE
<PAGE>


        Trex Medical Corporation
        Notes to Consolidated Financial Statements

    3.   Acquisitions (continued)

    million. In addition, in March 1995, ThermoTrex made a cash payment of
    $2.3 million to the holders of approximately 9.2% of Lorad's common stock
    who had earlier voted against the acquisition, in exchange for their
    interest in Lorad.

         Other accrued expenses in the accompanying balance sheet include
    $3.5 million and $4.0 million as of September 28, 1996 and September 30,
    1995, respectively, for estimated reserves associated with acquisitions,
    including a reserve of approximately $2 million for legal fees and other
    costs associated with a patent infringement suit that existed prior to
    ThermoTrex's acquisition of Lorad. This suit was brought by Fischer
    Imaging Corporation (Fischer), which alleges that Lorad infringes a
    Fischer patent on a precision mammographic needle-biopsy system. In
    connection with the organization of the Company, ThermoTrex agreed to
    indemnify the Company for any and all cash damages under this lawsuit,
    with respect to sales occurring prior to October 16, 1995, the date Lorad
    was transferred to the Company. Any payments received under such
    indemnity would be treated as a contribution to shareholders' investment.
    While the Company believes that it has meritorious legal defenses to the
    allegation, due to the inherent uncertainties of litigation, the Company
    is unable to predict the outcome of this matter. Although an unsuccessful
    resolution could have a material adverse effect on the Company's results
    of operations, in the opinion of management any resolution will not have
    a material adverse effect on the Company's financial position.


    4.   Common Stock

    Sale of Common Stock

         In July 1996, the Company sold 2,875,000 shares of its common stock
    in an initial public offering and 871,832 shares of its common stock in a
    concurrent rights offering, at $14.00 per share, for net proceeds of
    $49.1 million.

         In November 1995, the Company issued 1,862,000 shares of its common
    stock in a private placement at $10.25 per share for net proceeds of
    $17.6 million. In January 1996, the Company issued 100,000 shares of its
    common stock in a private placement at $10.75 per share for net proceeds
    of $1.1 million. Certain officers and directors of the Company purchased
    an aggregate of 143,300 shares of the Company's common stock issued in
    these private placements. In addition, an entity indirectly related to a
    director of the Company purchased 200,000 shares of the Company's common
    stock issued in these private placements. This director, however,
    disclaims beneficial ownership of such shares.

    Conversion of Subordinated Convertible Note

         During fiscal 1996, ThermoTrex converted $34.0 million principal
    amount of the Company's 4.2% subordinated convertible note into 2,883,798
    shares of the Company's common stock.



                                      F-16
PAGE
<PAGE>


        Trex Medical Corporation
        Notes to Consolidated Financial Statements

    4.   Common Stock (continued)

    Reserved Shares

         As of September 28, 1996, the Company had reserved 2,603,542
    unissued shares of its common stock for possible issuance under
    stock-based compensation plans and conversion of the Company's 4.2%
    subordinated convertible note, due to parent company.

    5.   Stock-based Compensation Plans

         On November 1, 1995, the Company adopted a stock-based compensation
    plan for its key employees, directors, and others, which permits the
    grant of a variety of stock and stock-based awards as determined by the
    human resources committee of the Company's Board of Directors (the Board
    Committee), including restricted stock, stock options, stock bonus shares
    or performance-based shares. The option recipients and the terms of
    options granted under this plan are determined by the Board Committee.
    Options granted to date became exercisable on September 30, 1996, and are
    subject to certain transfer restrictions and the right of the Company to
    repurchase shares issued upon exercise of the options at the exercise
    price, upon certain events. The restrictions and repurchase rights
    generally lapse ratably over periods ranging from five to ten years after
    the first anniversary of the grant date, depending on the term of the
    option, which may range from ten to twelve years. Nonqualified stock
    options may be granted at any price determined by the Board Committee,
    although incentive stock options must be granted at not less than the
    fair market value of the Company's common stock on the date of grant. To
    date, all options have been granted at fair market value. The Company
    also has a directors' stock option plan, adopted on November 1, 1995,
    that provides for the grant of stock options, at fair market value, to
    outside directors pursuant to a formula approved by the Company's
    shareholders. Options granted under this plan have the same general terms
    as options granted under the stock-based compensation plan described
    above, except that the restrictions and repurchase rights generally lapse
    ratably over a four-year period and the option term is five years. In
    addition to the Company's stock-based compensation plans, certain
    officers and key employees may also participate in the stock-based
    compensation plans of Thermo Electron or its majority-owned subsidiaries.

















                                      F-17
PAGE
<PAGE>


        Trex Medical Corporation
        Notes to Consolidated Financial Statements

    5.   Stock-based Compensation Plans (continued)

         No accounting recognition is given to options granted at fair
    market value until they are exercised. Upon exercise, net proceeds,
    including tax benefits realized, are credited to equity. A summary of the
    Company's stock option information for fiscal 1996 is as follows:

                                                                  Range of
                                                                    Option
                                                     Number         Prices
                                                         of            per
    (In thousands except per share amounts)          Shares          Share
    ----------------------------------------------------------------------
    Options outstanding, beginning of year                -   $          -

      Granted                                         1,401    10.25-12.00

      Exercised                                           -              -

      Lapsed or cancelled                               (20)         11.00
                                                      -----    -----------

    Options outstanding, end of year                  1,381   $10.25-12.00
                                                      =====

    Options exercisable                                   -
                                                      =====

    Options available for grant                         519
                                                      =====

    6.   Employee Benefit Plans

    Employee Stock Purchase Plan

         Substantially all of the Company's full-time employees are eligible
    to participate in an employee stock purchase plan sponsored by
    ThermoTrex. Under this plan, shares of ThermoTrex's and Thermo Electron's
    common stock can be purchased at the end of a 12-month plan year at 95%
    of the fair market value at the beginning of the plan year, and the
    shares purchased are subject to a six-month resale restriction. Prior to
    November 1, 1995, the applicable shares of common stock could be
    purchased at 85% of the fair market value at the beginning of the plan
    year, and the shares purchased were subject to a one-year resale
    restriction. Shares are purchased through payroll deductions of up to 10%
    of each participating employee's gross wages.

    401(k) Savings Plan

         The majority of the Company's full-time employees are eligible to
    participate in Thermo Electron's 401(k) savings plan. Contributions to
    the 401(k) savings plan are made by both the employee and the Company.
    Company contributions are based upon the level of employee contributions.
    The Company contributed and charged to expense for these plans $701,000,
    $242,000, and $313,000, in fiscal 1996, fiscal 1995, and 1994,
    respectively.


                                      F-18
PAGE
<PAGE>


        Trex Medical Corporation
        Notes to Consolidated Financial Statements

    7.   Income Taxes

         The components of the provision for income taxes for fiscal 1996,
    fiscal 1995, and 1994 are as follows:

    (In thousands)                                 1996      1995      1994
    -----------------------------------------------------------------------

    Currently payable:
      Federal                                    $6,324    $2,474    $1,119
      State                                       1,866       808       547
                                                 ------    ------    ------

                                                  8,190     3,282     1,666
                                                 ------    ------    ------

    Prepaid:
      Federal                                       (16)     (228)     (146)
      State                                          (6)     (173)      (54)
                                                 ------    ------    ------

                                                    (22)     (401)     (200)
                                                 ------    ------    ------

                                                 $8,168    $2,881    $1,466
                                                 ======    ======    ======

         The Company receives a tax deduction upon exercise of nonqualified
    stock options by employees for the difference between the exercise price
    and the market price of the Company's common stock on the date of
    exercise. The provision for income taxes that is currently payable does
    not reflect $186,000 of such benefits that have been allocated to capital
    in excess of par value for fiscal 1996 resulting from employee exercises
    of stock options in affiliated companies.

         The provision for income taxes in the accompanying statement of
    income for fiscal 1996, fiscal 1995, and 1994 differs from the provision
    calculated by applying the statutory federal income tax rate of 35% in
    fiscal 1996 and 34% in fiscal 1995 and 1994 to income before provision
    for income taxes due to the following:

    (In thousands)                                 1996      1995      1994
    -----------------------------------------------------------------------

    Provision for income taxes
      at statutory rate                          $6,129    $2,164    $  904
    Increases resulting from:
      State income taxes, net of federal tax      1,209       419       325
      Amortization of cost in excess of net
        assets of acquired companies                541       197       228
      Other, net                                    289       101         9
                                                 ------    ------    ------

                                                 $8,168    $2,881    $1,466
                                                 ======    ======    ======








                                      F-19
PAGE
<PAGE>


        Trex Medical Corporation
        Notes to Consolidated Financial Statements

    7.   Income Taxes (continued)

         Prepaid income taxes and deferred income taxes in the accompanying
    balance sheet consist of the following:

    (In thousands)                                            1996      1995
    ------------------------------------------------------------------------

    Prepaid income taxes:
      Reserves and accruals                                 $3,409    $1,725
      Accrued compensation                                   1,107       463
      Allowance for doubtful accounts                          430       348
      Inventory basis difference                               766       918
      Other, net                                                 -        20
                                                            ------    ------

                                                            $5,712    $3,474
                                                            ======    ======
    Deferred income taxes:
      Depreciation                                          $  170    $  142
                                                            ======    ======


    8.   Commitments

         The Company leases portions of its office and operating facilities
    under various noncancelable operating lease arrangements expiring between
    fiscal 1997 and fiscal 2006. The accompanying statement of income
    includes expenses from these operating leases of $674,000, $44,000, and
    $40,000 in fiscal 1996, fiscal 1995, and 1994, respectively. Future
    minimum payments due under these noncancelable operating leases at
    September 28, 1996, are $1,443,000 in fiscal 1997; $1,406,000 in fiscal
    1998; $1,377,000 in fiscal 1999; $1,372,000 in fiscal 2000; $1,372,000 in
    fiscal 2001; and $6,409,000 in fiscal 2002 and thereafter. Total future
    minimum lease payments are $13,379,000. The Company also has an operating
    lease arrangement with a related party as discussed in Note 9.


    9.   Related Party Transactions

    Corporate Services Agreement

         The Company and Thermo Electron have a corporate services agreement
    under which Thermo Electron's corporate staff provides certain
    administrative services, including certain legal advice and services,
    risk management, certain employee benefit administration, tax advice and
    preparation of tax returns, centralized cash management, and certain
    financial and other services, for which the Company pays Thermo Electron
    annually an amount equal to 1.0% of the Company's revenues. The Company
    paid an annual fee equal to 1.20% and 1.25% of the Company's revenues in
    calendar year 1995 and 1994, respectively. The annual fee is reviewed and
    adjusted annually by mutual agreement of the parties. For these services,
    the Company was charged $1,567,000, $663,000, and $680,000 in fiscal
    1996, fiscal 1995, and 1994, respectively. Management believes that the
    service fee charged by Thermo Electron is reasonable and that such fees
    are representative of the expenses the Company would have incurred on a
    stand-alone basis. The corporate services agreement is renewed annually

                                      F-20
PAGE
<PAGE>


        Trex Medical Corporation
        Notes to Consolidated Financial Statements

    9.   Related Party Transactions (continued)

    but can be terminated upon 30 days' prior notice by the Company or upon
    the Company's withdrawal from the Thermo Electron Corporate Charter (the
    Thermo Electron Corporate Charter defines the relationship among Thermo
    Electron and its majority-owned subsidiaries). For additional items such
    as employee benefit plans, insurance coverage, and other identifiable
    costs, Thermo Electron charges the Company based upon costs attributable
    to the Company.

    Related Party Revenues

         ThermoLase Corporation (ThermoLase), a majority-owned subsidiary of
    ThermoTrex, has engaged the Company to design and manufacture the laser
    to be used in ThermoLase's laser-based hair-removal system. During fiscal
    1996 and fiscal 1995, the Company recorded $8,549,000 and $350,000,
    respectively, of revenue under this agreement.

         Under an arrangement with Thermedics Detection Inc., a
    majority-owned subsidiary of Thermedics Inc., a majority-owned subsidiary
    of Thermo Electron, the Company manufactures an X-ray source, pursuant to
    written purchase orders, that is used as a component to a fill-measuring
    device produced by Thermedics Detection Inc. During fiscal 1996 and
    fiscal 1995, the Company recorded $361,000 and $120,000, respectively, of
    revenue under this agreement.

    Vendor Agreement

         During fiscal 1995, the Company placed an order for $2,500,000 for
    the design and production of high-transmission cellular grids from Thermo
    Electron's Tecomet division (Tecomet), which will be received through
    fiscal 1997. During fiscal 1996, the Company purchased grids valued at
    $397,000 from Tecomet under this arrangement. In addition, the Company
    recorded expense of $250,000 during each of fiscal 1996 and fiscal 1995
    related to research and development funding provided to Tecomet in
    connection with this project.

    Research and Development Agreement

         In October 1995, the Company and ThermoTrex entered into a license
    agreement under which the Company may elect to fund approximately $6.0
    million of ThermoTrex's research and development efforts related to
    direct-detection digital imaging technology in certain medical imaging
    fields.  If the Company elects to fund such costs, it is required to pay
    approximately $2.0 million in each of three years through fiscal 1998 and
    its license will be extended to cover such fields.  In fiscal 1996, the
    Company recorded $1,800,000 of expense under this agreement.  Prior to
    this agreement, ThermoTrex provided certain research and development
    contract services to the Company, which were charged to the Company based
    on actual cost and usage. For these services, the Company was charged
    $1,536,000, and $2,816,000 in fiscal 1995 and 1994, respectively.





                                      F-21
PAGE
<PAGE>


        Trex Medical Corporation
        Notes to Consolidated Financial Statements

    9.   Related Party Transactions (continued)

    Operating Lease

         The Company leases an office and operating facility from a realty
    trust controlled by an employee under a noncancelable operating lease
    arrangement expiring in fiscal 2012. The accompanying statement of income
    includes expenses from this operating lease of $286,000 in fiscal 1996.
    Future minimum payments due under this noncancelable operating lease at
    September 28, 1996, are $858,000 per year in fiscal 1997, 1998, 1999, and
    2000; $897,000 in fiscal 2001; and $11,102,000 in fiscal 2002 and
    thereafter. Total future minimum lease payments are $15,431,000.

    Repurchase Agreement

         The Company invests excess cash in a repurchase agreement with
    Thermo Electron as discussed in Note 1.

    Subordinated Convertible Note

         In September 1995, ThermoTrex acquired all of the outstanding
    capital stock of Bennett for approximately $42.9 million in cash. On
    October 2, 1995, ThermoTrex transferred to the Company all of the
    outstanding capital stock of Bennett, in exchange for a $42.0 million
    principal amount 4.2% subordinated convertible note, due 2000,
    convertible into shares of the Company's common stock at $11.79 per
    share. As of September 28, 1996, ThermoTrex had converted $34.0 million
    principal amount of this note.


    10.  Significant Customers and Export Sales

         Sales to one customer accounted for 11% of the Company's total
    revenues in fiscal 1996, and sales to another customer accounted for 18%
    and 11% of the Company's total revenues in fiscal 1995 and 1994,
    respectively. Export sales to Germany accounted for 7%, 11%, and 3% of
    the Company's total revenues in fiscal 1996, fiscal 1995, and 1994,
    respectively. Other export sales accounted for 15%, 10%, and 11% of the
    Company's total revenues in fiscal 1996, fiscal 1995, and 1994,
    respectively. In general, export sales are denominated in U.S. dollars.


    11.  Contingencies

         The owner of a U.S. patent related to automatic exposure control
    has claimed that the Company's mammography systems infringe such patent.
    The patent owner has offered a nonexclusive license under the patent on
    terms not acceptable to the Company. Although the Company believes that
    the validity of the patent may be questionable and subject to a
    successful challenge, if the patent holder were successful in enforcing
    such patent the Company could be enjoined from manufacturing and selling
    mammography systems. The Company will be indemnified by ThermoTrex for
    any cash damages relating to sales of such systems occurring prior to the
    dates on which ThermoTrex transferred certain businesses to the Company,
    although any payments under such indemnity would be treated as a

                                      F-22
PAGE
<PAGE>


        Trex Medical Corporation
        Notes to Consolidated Financial Statements

    11.  Contingencies (continued)

    contribution to shareholders' investment. In addition, the Company is
    aware of two U.S. patents owned by a former employee which have been
    asserted against the Company relating to its High-Transmission Cellular
    (HTC)(TM) grid to be used with the Company's mammography systems.
    Although the Company believes that the HTC grid does not infringe either
    of these patents, if the holder of the patents were successful in
    enforcing such patents, the Company could be subject to damages and
    enjoined from manufacturing and selling the HTC grid. 

         See Note 3 for a discussion of certain additional litigation.

         Due to the inherent uncertainty of dispute resolution, management
    cannot predict the outcome of these matters. While an unfavorable outcome
    of one or more of these matters could have a material adverse effect on
    the Company's results of operations, in the opinion of management any
    resolution will not have a material effect on the Company's financial
    position.


    12.  Fair Value of Financial Instruments

         The Company's financial instruments consist primarily of cash and
    cash equivalents, accounts receivable, accounts payable, due to
    affiliated companies, and its 4.2% subordinated convertible note due to
    parent company. The carrying amounts of the Company's cash and cash
    equivalents, accounts receivable, accounts payable, and due to affiliated
    companies approximate fair value due to their short-term nature. The fair
    value of the Company's 4.2% subordinated convertible note (Note 9),
    determined based on quoted market prices, was $13,740,000 at September
    28, 1996, and exceeds the carrying amount due to the market price of the
    Company's common stock exceeding the conversion price of the convertible
    note at year end.






















                                      F-23
PAGE
<PAGE>









        No dealer, salesman or  any other person has been authorized to  give
    any information  or to  make  any representation  not contained  in  this
    Prospectus and, if  given or  made, such  information  or representations
    must not be relied upon as having  been authorized by the Company.   This
    Prospectus does not constitute an offer to sell any securities other than
    those to which it relates  or an offer to sell,  or a solicitation  of an
    offer to buy, to any  person in any jurisdiction  where such an offer  or
    solicitation would be unlawful.  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
    date subsequent to the date hereof.





                                  300,000 shares

                                       TREX
                               Medical Corporation

                                   Common Stock












                              _____________________

                                December __, 1996

                                    PROSPECTUS

                              ---------------------
PAGE
<PAGE>





                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

    Item 13.  Other Expenses of Issuance and Distribution

         The following table sets forth the various expenses in connection
    with the sale and distribution of the securities being registered, other
    than the underwriting discounts and commissions.  All amounts shown are
    estimates except for the Securities and Exchange Commission (the
    "Commission") registration fee.

          Securities and Exchange Commission registration     $1,323.87
         fee  ...............................................

          Legal fees and expenses  .......................... 10,000.00
          Accounting fees and expenses  ..................... 10,000.00
          Miscellaneous  ....................................  8,676.13
                                                               --------

                  Total  .................................... $30,000.0
                                                                      0

    Item 14.  Indemnification of Directors and Officers

         The Delaware General Corporation Law and the Company's Certificate
    of Incorporation and By-Laws limit the monetary liability of directors to
    the Company and to its shareholders and provide for indemnification of
    the Company's officers and directors for liabilities and expenses that
    they may incur in such capacities.  In general, officers and directors
    are indemnified with respect to actions taken in good faith in a manner
    reasonably believed to be in, or not opposed to the best interests of the
    Company and, with respect to any criminal action or proceeding, actions
    that the indemnitee had not reasonable cause to believe were unlawful.
    The Company also has indemnification agreements with its directors and
    officers that provide for the maximum indemnification allowed by law.
    Reference is made to the Company's Certificate of Incorporation, By-Laws
    and form of Indemnification Agreement for Officers and Directors
    incorporated by reference as Exhibits 3.1, 3.2 and 10.18 hereto,
    respectively.

         Thermo Electron has an insurance policy which insures the directors
    and officers of Thermo Electron and its subsidiaries, including the
    Company, against certain liabilities which might be incurred in
    connection with the performance of their duties.

         The Selling Shareholders are obligated under the Purchase Agreements
    to indemnify directors, officers and controlling persons of the Company
    against certain liabilities, including liabilities under the Securities
    Act.







                                      II-1
PAGE
<PAGE>





    Item 15.  Recent Sales of Unregistered Securities.

         On October 2, 1995, ThermoTrex transferred to the Company all
    outstanding capital stock of its Bennett X-Ray Corporation subsidiary in
    exchange for a $42,000,000 principal amount subordinated convertible note
    due 2000.  Exemption from registration for this transaction is claimed
    under Section 4(2) of the Securities Act.

         On October 16, 1995, ThermoTrex contributed all of the assets and
    liabilities relating to its Lorad division and it Sonic CT system to the
    Company in exchange for 20,000,000 shares of Common Stock.  Exemption for
    registration for this transaction is claimed under Section 4(2) of the
    Securities Act.

         On November 22, 1995 and November 30, 1995 the Company sold an
    aggregate of 1,862,000 shares of Common Stock to a group of accredited
    investors pursuant to Regulation D of the Commission promulgated under
    the Securities Act.

         On January 31, 1996, the Company sold 100,000 shares of Common Stock
    to an accredited investor pursuant to Regulation D of the Commission
    promulgated under the Securities Act.

         On December 19, 1996, the Company sold an aggregate of 300,000
    shares of Common Stock to a group of accredited investors pursuant to
    Regulation D of the Commission promulgated under the Securities Act.

    Item 16.  Exhibits and Financial Statements Schedule.

         (a)  See the Exhibit Index included immediately preceding the
    exhibits to this Registration Statement.

         (b)  The Financial Statement Schedule as of September 28, 1996 and
    the Report of Independent Public Accountants on such schedule are
    included in this Registration Statement.  All other schedules are omitted
    because they are not applicable or are  not required under Regulation
    S-X.

    Item 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,
                    represent a fundamental change in the information set
                    forth in the registration statement.  Notwithstanding

                                      II-2
PAGE
<PAGE>





                    the foregoing, any increase or decrease in volume of
                    securities offered (if the total dollar value of
                    securities offered would not exceed that which was
                    registered) and any deviation from the low or high and
                    of the estimated maximum offering range may be reflected
                    in the form of prospectus filed with the Commission
                    pursuant to Rule 424(b) if, in the aggregate, the
                    changes in volume and price represent no more than 20
                    percent change in the maximum aggregate offering price
                    set forth in the "Calculation of Registration Fee" table
                    in the effective 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.

         (b)  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-3
PAGE
<PAGE>





                                   SIGNATURES

         Pursuant to the requirements of the Securities Act, the Registrant
    has duly caused this Registration Statement to be signed on its behalf by
    the undersigned, thereunto duly authorized, in the City of Danbury,
    Connecticut, on this 23rd day of December 1996.

                                       TREX MEDICAL CORPORATION


                                       By: /s/ Hal Kirshner
                                           -----------------------
                                            Hal Kirshner
                                            Chief Executive Officer,
                                            President and Director

                        POWER OF ATTORNEY AND SIGNATURES

         We, the undersigned officers and directors of Trex Medical
    Corporation, hereby constitute and appoint John N. Hatsopoulos, Paul F.
    Kelleher, Seth H. Hoogasian, Esq., Sandra L. Lambert, Esq. and Jonathan
    W. Painter and each of them singly, our true and lawful attorneys with
    full power to them, and each of them singly, to sign for us and in our
    names in the capacities indicated below, the Registration Statement on
    Form S-1 filed herewith and any and all pre-effective and post-effective
    amendments to said Registration Statement (including any subsequent
    Registration Statement for the same offering which may be filed under
    Rule 462(b)), and generally to do all such things in our names and on our
    behalf in our capacities as officers and directors to enable Trex Medical
    Corporation to comply with the provisions of the Securities Act and all
    requirements of the Securities and Exchange Commission, hereby ratifying
    and confirming our signatures as they may be signed by our attorneys, or
    any of them, to said Registration Statement and any and all amendments
    thereto.

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

                 Signature                   Title              Date
                 ---------                   -----              ----




       /s/ Hal Kirshner                Chief Executive      December 23,
       ----------------------------
                                      Officer, President       1996
      ----
               Hal Kirshner           and Director
                                      (Principal
                                      Executive Officer)



       /s/ Gary S. Weinstein           Director and         December 23,
       ----------------------------
                                      Chairman of the          1996
      ----
             Gary S. Weinstein        Board


                                      II-4
PAGE
<PAGE>





                 Signature                   Title              Date
                 ---------                   -----              ----




       /s/ Anthony J. Pellegrino       Director and Vice    December 23,
       ----------------------------
                                      Chairman of the          1996
      ---
           Anthony J. Pellegrino      Board



       /s/ John N. Hatsopoulos         Vice President,      December 23,
       ----------------------------
                                      Chief Financial          1996
      ---
            John N. Hatsopoulos       Officer and
                                      Director
                                      (Principal
                                      Financial Officer)



       /s/ Paul F. Kelleher            Chief Accounting     December 23,
       ----------------------------
                                      Officer (Principal       1996
      ---
             Paul F. Kelleher         Accounting
                                      Officer)




       /s/ Dr. Elias P. Gyftopoulos    Director             December 23,
       ----------------------------
                                                               1996
      --
         Dr. Elias P. Gyftopoulos



                                       Director             December 23,
       ----------------------------
                                                               1996
      ---
             Robert C. Howard



       /s/ Earl R. Lewis               Director             December 23,
       ----------------------------
                                                               1996
      ---
               Earl R. Lewis




       /s/ Dr. James W. May, Jr.       Director             December 23,
       ----------------------------
                                                               1996
      ---
           Dr. James W. May, Jr.






                                      II-5
PAGE
<PAGE>








       /s/ Hutham S. Olayan            Director             December 23,
       ----------------------------
                                                               1996
      ---
             Hutham S. Olayan




       /s/ Firooz Rufeh                Director             December 23,
       ----------------------------
                                                               1996
      ---
               Firooz Rufeh



                                       Director             December 23,
       ----------------------------
                                                               1996
      ---
              Kenneth Y. Tang





































                                      II-6
PAGE
<PAGE>





                                  EXHIBIT INDEX

    Exhibit
    Number     Description of Exhibit
    -------    ----------------------
     
      3.1      Certificate of Incorporation, as amended, of the
               Registrant (filed as Exhibit 3.1 to the Registrant's
               Registration Statement on Form S-1 [Reg. No. 333-2926]
               and incorporated herein by reference).

      3.2      By-Laws of the Registrant (filed as Exhibit 3.2 to the
               Registrant's Registration Statement on Form S-1 [Reg.
               No. 333-2926] and incorporated herein by reference).

      4.1      Specimen Common Stock Certificate (filed as Exhibit 4.1
               to the Registrant's Registration Statement on Form S-1
               [Reg. No. 333-2926] and incorporated herein by
               reference).

      4.2      $42,000,000 Subordinated Convertible Note due 2000 of
               the Registrant issued to ThermoTrex (filed as Exhibit
               4.2 to the Registrant's Registration Statement on Form
               S-1 [Reg. No. 333-2926] and incorporated herein by
               reference).

      5        Opinion of Seth H. Hoogasian, Esq.

     10.1      Corporate Services Agreement dated as of September 27,
               1995 between Thermo Electron Corporation (Thermo
               Electron) and the Registrant (filed as Exhibit 10.1 to
               the Registrant's Registration Statement on Form S-1
               [Reg. No. 333-2926] and incorporated herein by
               reference).

     10.2      Thermo Electron Corporate Charter, as amended and
               restated effective January 3, 1993 (incorporated by
               reference herein from Exhibit 10.1 to Thermo Electron's
               Annual Report on Form 10-K for the fiscal year ended
               January 2, 1993 (File No. 1-8002)).

     10.3      Tax Allocation Agreement dated as of September 27, 1995
               between Thermo Electron and the Registrant (filed as
               Exhibit 10.3 to the Registrant's Registration Statement
               on Form S-1 [Reg. No. 333-2926] and incorporated herein
               by reference).

     10.4      Master Repurchase Agreement dated as of September 27,
               1995 between Thermo Electron and the Registrant (filed
               as Exhibit 10.4 to the Registrant's Registration
               Statement on Form S-1 [Reg. No. 333-2926] and
               incorporated herein by reference).





                                      II-7
PAGE
<PAGE>





    Exhibit
    Number     Description of Exhibit
    -------    ----------------------

     10.5      Master Guarantee Reimbursement Agreement dated as of
               September 27, 1995 between Thermo Electron and the Registrant
               (filed as Exhibit 10.5 to the Registrant's Registration
               Statement on Form S-1 [Reg. No. 333-2926] and incorporated
               herein by reference)

     10.6      Master Guarantee Reimbursement Agreement dated as of
               September 27, 1995 between ThermoTrex and the
               Registrant (filed as Exhibit 10.6 to the Registrant's
               Registration Statement on Form S-1 [Reg. No. 333-2926]
               and incorporated herein by reference).

     10.7      OEM Agreement between Philips Medical Systems North
               American Company and Lorad dated as of November 2, 1993
               (filed as Exhibit 10.7 to the Registrant's Registration
               Statement on Form S-1 [Reg. No. 333-2926] and
               incorporated herein by reference).

     10.8      OEM Agreement between Philips Medical Systems North
               American Company and Lorad dated November 17, 1993
               (filed as Exhibit 10.8 to the Registrant's Registration
               Statement on Form S-1 [Reg. No. 333-2926] and
               incorporated herein by reference).

     10.9      Purchase Agreement between General Electric Company and
               Bennett dated November 17, 1994 (filed as Exhibit 10.9
               to the Registrant's Registration Statement on Form S-1
               [Reg. No. 333-2926] and incorporated herein by
               reference).

     10.10     Agreement between Philips Medizin Systeme
               Unternehmensbereich der Philips GmbH and Bennett dated
               February 12, 1992 (filed as Exhibit 10.10 to the
               Registrant's Registration Statement on Form S-1 [Reg.
               No. 333-2926] and incorporated herein by reference).

     10.11     Distributor Agreement between ThermoTrex and U.S.
               Surgical Corporation dated October 20, 1995, as amended
               (filed as Exhibit 10.11 to the Registrant's
               Registration Statement on Form S-1 [Reg. No. 333-2926]
               and incorporated herein by reference).

     10.12     Note Purchase and Sale Agreement dated as of October 2,
               1995 between ThermoTrex and the Registrant (filed as
               Exhibit 10.12 to the Registrant's Registration
               Statement on Form S-1 [Reg. No. 333-2926] and
               incorporated herein by reference).






                                      II-8
PAGE
<PAGE>





    Exhibit
    Number     Description of Exhibit
    -------    ----------------------

     10.13     Lease dated as of September 15, 1995, by and among
               ThermoTrex and BK Realty Associates, L.P. and Calrob
               Realty Associates (filed as Exhibit 10.26 to
               ThermoTrex's Annual Report on Form 10-K for the fiscal
               year ended September 30, 1995 [File No. 1-10791] and
               incorporated herein by reference).

      10.14    Lease dated as of December 20, 1995, between Melvyn J.
               Powers and Mary P. Powers D/B/A M&M Realty and Lorad,
               as amended (filed as Exhibit 10.14 to the Registrant's
               Registration Statement on Form S-1 [Reg. No. 333-2926]
               and incorporated herein by reference).

      10.15    Equity Incentive Plan of the Registrant (filed as
               Exhibit 10.15 to the Registrant's Registration
               Statement on Form S-1 [Reg. No. 333-2926] and
               incorporated herein by reference).

      10.16    Deferred Compensation Plan for Directors of the
               Registrant (filed as Exhibit 10.16 to the Registrant's
               Registration Statement on Form S-1 [Reg. No. 333-2926]
               and incorporated herein by reference).

      10.17    Directors Stock Option Plan of the Registrant (filed as
               Exhibit 10.17 to the Registrant's Registration
               Statement on Form S-1 [Reg. No. 333-2926] and
               incorporated herein by reference).

      10.18    Form of Indemnification Agreement for Officers and
               Directors (filed as Exhibit 10.18 to the Registrant's
               Registration Statement on Form S-1 [Reg. No. 333-2926]
               and incorporated herein by reference). 

               In addition to the stock-based compensation plans of
               the Registrant, the executive officers of the
               Registrant may be granted awards under stock-based
               compensation plans of Thermo Electron Corporation and
               ThermoTrex Corporation for services rendered to the
               Registrant or such affiliated corporations. Such plans
               were filed as Exhibits 10.21 through 10.44 and 10.73
               through 10.76 to the Annual Report on Form 10-K of
               Thermo Electron for the fiscal year ended December 30,
               1995 [File No. 1-8002] and as Exhibit 10.19 to the
               Registrant's Annual Report on Form 10-K for the fiscal
               year ended September 28, 1996 [File No. 1-11827] and
               are incorporated herein by reference.
    .






                                      II-9
PAGE
<PAGE>





    Exhibit
    Number     Description of Exhibit
    -------    ----------------------

      10.19    License Agreement between the Registrant and ThermoTrex
               dated as of October 16, 1995 (filed as Exhibit 10.88 to
               the Registrant's Registration Statement on Form S-1
               [Reg. No. 333-2926] and incorporated herein by
               reference).

      10.20    Stock Holding Assistance Plan and Form of Promissory
               Note (filed as Exhibit 10.21 to the Registrant's Annual
               Report on Form 10-K for the fiscal year ended September
               28, 1996 [File No. 1-11827] and incorporated herein by
               reference).

      10.21    Lease dated May 29, 1996 between John K. Grady, Trustee
               of Concord Associates Foster Street Trust and XRE
               Acquisition Corp. (filed as Exhibit 10.89 to the
               Registrant's Registration Statement on Form S-1 [Reg.
               No. 333-2926] and incorporated herein by reference).

      10.22    Asset Purchase Agreement dated September 4, 1996 by and
               among CXR Acquisition Corp., the Registrant,
               Continental X-Ray Corporation, Alphatek Corporation,
               Broadview Manufacturing Corporation, Haymarket Square
               Associates, Advanced Medical Imaging, Inc.,
               Trans-Continental X-ray Corporation and the
               Stockholders and Partners thereof (filed as Exhibit
               10.21 to the Registrant's Registration Statement on
               Form S-1 [Reg. No. 333-15381] and incorporated herein
               by reference).

      11       Statement re: Computation of Earnings per Share (filed
               as Exhibit 11 to the Registrant's Annual Report on Form
               10-K for the fiscal year ended September 28, 1996 [File
               No. 1-11827] and incorporated herein by reference).

      21       Subsidiaries of the Registrant (filed as Exhibit 21 to
               the Registrant's Registration Statement on Form S-1
               [Reg. No. 333-15381] and incorporated herein by
               reference).

      23.1     Consent of Arthur Andersen LLP.


      23.2     Consent of Seth H. Hoogasian, Esq. (included in Exhibit
               5).

      24       Power of Attorney (See Signature Page of this
               Registration Statement).



    AA963580009


                                      II-10















                                           December 23, 1996

        Securities and Exchange Commission
        Judiciary Plaza
        450 Fifth Street, N.W.
        Washington, D.C.  20549

            Re:   Registration Statement on Form S-1 Relating to
                  300,000 Shares of Common Stock, Par Value 
                  $.01 Per Share, of Trex Medical Corporation.
                  --------------------------------------------

        Dear Sirs:

            I am General Counsel to Trex Medical Corporation, a Delaware
        corporation (the "Company"), and have acted as counsel in
        connection with the registration under the Securities Act of
        1933, as amended, on Form S-1 (the "Registration Statement"), of
        300,000 shares of the Company's Common Stock, par value $.01 per
        share (the "Shares"), which may from time to time be sold by
        certain shareholders of the Company.

            I or a member of my staff  have reviewed the corporate
        proceedings taken by the Company with respect to the
        authorization of the issuance of the Shares.  I or a member of my
        staff have also examined and relied upon originals or copies,
        certified or otherwise authenticated to my satisfaction, of all
        corporate records, documents, agreements or other instruments of
        the Company, and have made investigations of law and have
        discussed with the Company's representatives questions of fact
        that I or a member of my staff have deemed necessary or
        appropriate.

            Based upon and subject to the foregoing, I am of the opinion
        that the Shares have been duly authorized by the Company and are
        validly issued, fully paid and non-assessable.

            I hereby consent to the filing of this opinion as Exhibit 5
        to the Registration Statement, including any amendments thereto,
        and to the use of my name under the caption "Legal Opinions" in
        the prospectus constituting a part thereof.

                                           Sincerely,


                                           Seth H. Hoogasian
                                           General Counsel
        AA963580031








                                                             Exhibit 23.1

                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


        To Trex Medical Corporation:

        As independent public accountants, we hereby consent to the use
        of our report (and to all references to our Firm) included in or
        made a part of this registration statement.



                                                  ARTHUR ANDERSEN LLP



        Boston, Massachusetts
        December 23, 1996



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