ADVANCED NMR SYSTEMS INC
8-K, 1996-02-09
ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS
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                          SECURITIES AND EXCHANGE COMMISSION

                                Washington, D.C. 20549


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


                                       FORM 8-K


                                    CURRENT REPORT


                        Pursuant to Section 13 or 15(d) of the
                           Securities Exchange Act of 1934


       Date of Report (date of earliest event reported):  February 4, 1996
                                                         --------------------



                               Advanced NMR Systems, Inc.                
       ----------------------------------------------------------------------
               (Exact name or registrant as specified in its charter)



                 Delaware                  0-11914            22-2457487   
       -------------------------------   ------------    --------------------
       (State or other jurisdiction of   (Commission      (IRS Employer
       incorporation or organization)    File Number)     Identification No.)


              46 Jonspin Road, Wilmington, Massachusetts           01887   
       ---------------------------------------------------    ---------------
            (Address of principal executive offices)             (Zip Code)



       Registrant's telephone number, including area code:   (508) 657-8876 
                                                           ------------------



                                         N/A                                  
       ----------------------------------------------------------------------
           (Former name or former address, if changed since last report.)


                                                          Page 1 of 48 Pages
                                                     Exhibit Index on Page 5
       <PAGE>


           Item 5.   Other Events.
           ------    ------------

                     On February 4, 1996, the registrant Advanced NMR
           Systems, Inc. ("ANMR") and its wholly-owned subsidiary AMS
           Merger Corporation (the "Subsidiary") entered into an Agreement
           and Plan of Merger (the "Merger Agreement") with Advanced
           Mammography Systems, Inc., a Delaware corporation ("AMS").  The
           Merger Agreement provides for the merger (the "Merger") of the
           Subsidiary into AMS, with AMS as the surviving corporation of
           the Merger, which would operate as a wholly-owned subsidiary of
           ANMR.  A copy of the Merger Agreement is attached hereto as
           Exhibit 1, and is incorporated by reference.  The description
           of the transaction provided herein is qualified in its entirety
           by reference to the Merger Agreement.

                     ANMR owns 4,000,000 shares (including 2,750,000
           shares held in escrow under an Escrow Agreement) of the
           6,598,376 outstanding shares of common stock, $.01 par value
           per share ("AMS Common Stock"), or approximately 61% of the
           outstanding AMS Common Stock. The AMS Common Stock is traded in
           the Nasdaq Small Cap System under the symbol MAMO.

                     AMS is a development stage company which was
           organized by ANMR in July 1992 to acquire and develop
           proprietary technology from ANMR to design, manufacture and
           commercialize a dedicated (or partial body) magnetic resonance
           imaging (MRI) system for breast imaging which can be used to
           detect and characterize breast tissue abnormalities.  Pursuant
           to the License Agreement entered into upon the formation of
           AMS, ANMR granted to AMS a perpetual, worldwide, exclusive,
           royalty-free license for the ANMR technology relating to the
           development of a dedicated MRI system for mammography (the
           "Field of Use").  This Agreement also granted to ANMR rights to
           future technology developed by AMS for use in connection with
           mammography, and to AMS rights to future technology developed
           by ANMR for use outside of the Field of Use.  AMS has completed
           a prototype of its dedicated MRI mammography system and in
           February 1995 had filed an application with the U.S. Food and
           Drug Administration seeking clearance for commercial use.  

                     ANMR has provided executive officers, research
           scientists and other personnel to AMS and AMS has occupied a
           portion of the office and research premises leased by ANMR for
           which AMS pays ANMR a fee based upon a fixed percentage of
           overhead expenses and an allocation of the time spent by ANMR
           executive officers, pursuant to a Shared Services Agreement
           which has been extended to April 24, 1996.

                     Upon closing of the Merger, each share of AMS Common
           Stock (except for the shares owned by ANMR) shall be converted
           into the right to receive a number of fully paid and
           nonassessable shares of common stock, par value $.01 per share,
           of Advanced NMR ("ANMR Common Stock"), determined by dividing
           $2.625 by the average closing price of the ANMR Common Stock
           over the 30 trading days ending five trading days prior to the
           closing of the Merger Agreement, provided that ANMR will not be
           required to issue more than 1.297059 or fewer than 1.173529
           shares of ANMR Common Stock for each share of AMS Common Stock. 
           The Merger Agreement provides that ANMR will assume the
           outstanding AMS options and is obligated to issue under the AMS
           options shares of ANMR Common Stock.  On February 2, 1996, the
           closing prices of the AMS Common Stock and the ANMR Common
           Stock were $2.625 and $2.125, respectively.  The Merger
           Agreement also provides that the Advanced NMR Board shall
           nominate one of the members of the special committee of
           independent directors of the AMS Board of Directors to serve on
           the ANMR Board after consummation of the Merger.

                     The closing of the Merger is subject to approval by
           the stockholders of AMS, the consent of Chemical Bank, senior
           lender to ANMR, and customary closing conditions.  ANMR and AMS
           will shortly file a Form S-4 as a proxy statement/prospectus. 
           It is anticipated that the AMS stockholder meeting will be held
           in the late spring, and the Merger would close immediately upon
           stockholder approval and fulfillment of the other conditions.


           Item 7.   Financial Statements and Exhibits.
           ------    ---------------------------------

                (c)  Exhibits:


                2.   Agreement and Plan of Merger, dated             
                     as of February 4, 1996, among Advanced NMR
                     Systems, Inc., AMS Merger Corporation and
                     Advanced Mammography Systems, Inc.
                     (without schedules).

           <PAGE>

                                      SIGNATURES

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


                                              ADVANCED NMR SYSTEMS, INC.



           Dated:  February 9, 1996       By:  /s/ Charles Moche
                                              ----------------------------
                                              Name:     Charles M. Moche
                                              Title:    Secretary

           <PAGE>


                                    EXHIBIT INDEX


            Exhibit        Description                                 Page
            -------        -----------                                 ----

               2            Agreement  and Plan of Merger, dated         6
                            as of February 4, 1996, among Advanced
                            NMR   Systems,    Inc.,   AMS   Merger
                            Corporation  and  Advanced Mammography
                            Systems, Inc. (without schedules).



                                                           Exhibit 2


                             AGREEMENT AND PLAN OF MERGER



                                     BY AND AMONG



                             ADVANCED NMR SYSTEMS, INC.,
                               A DELAWARE CORPORATION,

                               AMS MERGER CORPORATION,
                             A DELAWARE CORPORATION, AND

                          ADVANCED MAMMOGRAPHY SYSTEMS, INC.
                                A DELAWARE CORPORATION


          <PAGE>

                                  TABLE OF CONTENTS
                                                                      Page
                                                                      ---- 

          ARTICLE I
          ADOPTION OF AGREEMENT AND PLAN OF MERGER                      2
          1.1  The Merger                                               2
          1.2  Effective Date of the Merger                             2
          1.3  Surviving Corporation; Certificate of Incorporation of
               Surviving Corporation                                    2
          1.4  Merger Consideration; Conversion of AMS Common Stock;
               Cancellation of Acquisition Corp. Common Stock           2
          1.5  Exchange of Certificates                                 3
          1.6  No Fractional Shares                                     5
          1.7  Certificates in Other Names                              5
          1.8  Treatment of AMS Options                                 5

          ARTICLE II
          CLOSING                                                       6
          2.1  Closing Date                                             6

          ARTICLE III
          REPRESENTATIONS AND WARRANTIES OF AMS                         6
          3.1  Due Incorporation                                        6
          3.2  Due Authorization                                        7
          3.3  Non-Contravention; Consents and Approvals                7
          3.4  Capitalization                                           8
          3.5  Financial Statements; Undisclosed Liabilities; 
               Other Documents                                          9
          3.6  Commission Filings                                       9
          3.7  No Material Adverse Effects or Changes                  10
          3.8  Registration Statement and Proxy Statement/Prospectus   10
          3.9  Intellectual Property                                   11
          3.10 Tax Returns and Audits                                  11
          3.11 Litigation                                              12
          3.12 Compliance with Applicable Laws                         12
          3.13 Medical Devices                                         13
          3.14 Contracts; No Defaults                                  13
          3.15 Fees of Brokers, Finders and Financial Advisors         13
          3.16 Special Committee Recommendation; Board of 
               Directors Recommendation                                13
          3.17 Opinion of Financial Advisor                            14

          ARTICLE IV
          REPRESENTATIONS AND WARRANTIES OF
          ACQUISITION CORP. AND ADVANCED NMR                           14
          4.1  Due Incorporation                                       14
          4.2  Due Authorization                                       14
          4.3  Non-Contravention; Consents and Approvals               15
          4.4  Capitalization                                          16
          4.5  Financial Statements; Undisclosed Liabilities; 
               Other Documents                                         16
          4.6  Commission Filings                                      17
          4.7  No Material Adverse Effects or Changes                  17
          4.8  Registration Statement and Proxy Statement/Prospectus   18
          4.9  Intellectual Property                                   18
          4.10 Insurance                                               19
          4.11 Employee Benefit Plans and Employment Agreements        19
          4.12 Labor Matters                                           20
          4.13 Tax Returns and Audits                                  20
          4.14 Litigation                                              21
          4.15 Compliance with Applicable Laws                         21
          4.16 Medical Devices                                         21
          4.17 Contracts; No Defaults                                  22
          4.18 Fees of Brokers, Finders and Investment Bankers         22
          4.19 Absence of Certain Changes or Events                    23

          ARTICLE V
          COVENANTS                                                    23
          5.1  Implementing Agreement                                  23
          5.2  Access to Information and Facilities                    23
          5.3  Preservation of Business                                24
          5.4  Proxy Materials and AMS Stockholder Approval            24
          5.5  Consents and Approvals                                  25
          5.6  Periodic Reports                                        26
          5.7  Publicity                                               26
          5.8  Listing of Common Stock                                 26
          5.9  Blue Sky Approvals                                      26
          5.10 Rule 145 Affiliates                                     26

          ARTICLE VI
          CONDITIONS PRECEDENT TO OBLIGATIONS
          OF ACQUISITION CORP. AND ADVANCED NMR                        26
          6.1  Warranties True as of Closing Date                      27
          6.2  Compliance With Agreements and Covenants                27
          6.3  Consents and Approvals                                  27
          6.4  Actions or Proceedings                                  27
          6.5  Approval of Merger                                      27
          6.6  Consent of Chemical Bank                                27
          6.7  Registration Statement                                  27
          6.8  Listing of Common Stock                                 27
          6.9  Other Closing Documents                                 27

          ARTICLE VII
          CONDITIONS PRECEDENT TO OBLIGATIONS OF AMS                   28
          7.1  Warranties True as of Closing Date                      28
          7.2  Compliance with Agreements and Covenants                28
          7.3  Consents and Approvals                                  28
          7.4  Actions or Proceedings                                  28
          7.5  Approval of Merger                                      28
          7.6  Registration Statement                                  28
          7.7  Listing of Common Stock                                 28
          7.8  Other Closing Documents                                 29
          7.9  Consent of Chemical Bank                                29
          7.10 Fairness Opinion                                        29
          7.11 Board Appointment                                       29

          ARTICLE VIII
          TERMINATION AND INDEMNIFICATION                              29
          8.1  Termination                                             29
          8.2  Effect of Termination and Abandonment                   30
          8.3  Indemnification by Advanced NMR                         31

          ARTICLE IX
          MISCELLANEOUS                                                33
          9.1  Expenses                                                33
          9.2  Amendment                                               33
          9.3  Non-Survival of Representations, Warranties, 
               Covenants and Agreements                                33
          9.4  Notices                                                 33
          9.5  Waivers                                                 34
          9.6  Interpretation                                          34
          9.7  Applicable Law                                          34
          9.8  Assignment                                              34
          9.9  No Third Party Beneficiaries                            34
          9.10 Enforcement of the Agreement                            35
          9.11 Further Assurances                                      35
          9.12 Severability                                            35
          9.13 Remedies Cumulative                                     35
          9.14 Entire Understanding                                    35
          9.15 Waiver of Jury Trial                                    35
          9.16 Counterparts                                            35


          <PAGE>

                                      SCHEDULES
                                      ---------

          Number              Description
          ------              -----------

          1.8                 AMS Options and AMS Option Plans

          3.7                 Material Adverse Effects, Changes -- AMS

          3.9                 Intellectual Property -- AMS

          3.13                Medical Devices -- AMS

          4.7                 Material Adverse Effects -- ANMR Companies

          4.9                 Intellectual Property -- Advanced NMR and
                                Subsidiaries

          4.13                Tax Returns and Audits -- Advanced NMR

          4.14                Litigation -- ANMR Companies

          4.15                Compliance Matters -- ANMR Companies

          4.16                Medical Devices -- Advanced NMR and
                                Subsidiaries

          4.17                Contract Matters -- ANMR Companies

          4.19                Certain Changes or Events -- Advanced NMR


          <PAGE>

                             AGREEMENT AND PLAN OF MERGER


                    AGREEMENT AND PLAN OF MERGER dated as of February 4,
          1996, by and among ADVANCED NMR SYSTEMS, INC., a Delaware
          corporation ("Advanced NMR"), AMS MERGER CORPORATION, a Delaware
          corporation ("Acquisition Corp."), and ADVANCED MAMMOGRAPHY
          SYSTEMS, INC., a Delaware corporation ("AMS").


                                W I T N E S S E T H :


                    WHEREAS, Acquisition Corp. is a wholly-owned subsidiary
          of Advanced NMR;

                    WHEREAS, Advanced NMR is the owner of 4,000,000 shares
          (the "AMS Shares") of common stock, $.01 par value per share
          ("AMS Common Stock"), of AMS;

                    WHEREAS, Advanced NMR desires to acquire the shares of
          AMS Common Stock not owned by it through the merger of
          Acquisition Corp. with and into AMS pursuant to the terms
          hereinafter set forth (the "Merger");

                    WHEREAS, the respective Boards of Directors of Advanced
          NMR and Acquisition Corp. deem it advisable and in the best
          interests of Advanced NMR and Acquisition Corp. that Acquisition
          Corp. be merged with and into AMS upon the terms and conditions
          hereinafter specified; 

                    WHEREAS, the Board of Directors of AMS, upon the
          recommendation of a special committee ("Special Committee") of
          independent directors of AMS, deems it advisable and in the best
          interests of AMS that Acquisition Corp. be merged with and into
          AMS upon the terms and conditions hereinafter specified; 

                    WHEREAS, for Federal income tax purposes, it is
          intended that the Merger shall qualify as a reorganization within
          the meaning of Section 368 of the Internal Revenue Code of 1986,
          as amended (the "Code");

                    WHEREAS, Acquisition Corp. has an authorized capital
          stock consisting of 1,000 shares of Common Stock, $.01 par value
          per share (the "Acquisition Corp. Common Stock"), of which 100
          shares are currently issued and outstanding and owned by Advanced
          NMR; and

                    WHEREAS, AMS has an authorized capital stock consisting
          of (i) 5,000,000 shares of preferred stock, $.01 par value per
          share (the "AMS Preferred Stock"), none of which is issued and
          outstanding; and (ii) 25,000,000 shares of AMS Common Stock, of
          which 6,598,376 shares are currently issued and outstanding.

                    NOW, THEREFORE, in consideration of the mutual
          covenants and agreements hereinafter contained, the parties
          hereto, intending to be legally bound hereby, agree as follows:


                                      ARTICLE I

                       ADOPTION OF AGREEMENT AND PLAN OF MERGER

                    1.1  The Merger.  At the Effective Time (as defined in
                         ----------
          Section 1.2 herein), in accordance with this Agreement and the
          -----------
          relevant provisions of the Delaware General Corporation Law (the
          "DGCL"), Acquisition Corp. shall be merged with and into AMS. 
          AMS shall be the surviving corporation of the Merger and AMS
          shall continue, and be deemed to continue, for all purposes after
          the Merger, and the existence of Acquisition Corp. shall cease at
          the Effective Time.

                    1.2  Effective Date of the Merger.  This Agreement
                         ----------------------------
          shall be submitted to the stockholders of AMS as provided in
          Section 5.4 hereof, and to the sole stockholder of Acquisition
          -----------
          Corp., as provided in Section 5.4 hereof, for approval as soon as
                                -----------
          practicable after the execution of this Agreement.  Subject to
          the terms and conditions hereof, upon the authorization, approval
          and adoption hereof by the affirmative vote of the holders of at
          least a majority of the outstanding shares of each of AMS Common
          Stock and Acquisition Corp. Common Stock entitled to vote thereon
          as provided by the DGCL, a Certificate of Merger (the "Certificate 
          of Merger") meeting the requirements of Section 251 of the DGCL 
          shall be executed, verified and acknowledged as required by the 
          provisions of Sections 251 and 103 of the DGCL and be delivered 
          to the Secretary of State of Delaware for filing (the time of 
          such filing being the "Effective Time" and the date of such 
          filing being the "Effective Date").

                    1.3  Surviving Corporation; Certificate of
                         -------------------------------------
          Incorporation of Surviving Corporation.  Following the Merger,
          --------------------------------------
          AMS shall continue to exist under, and be governed by, the laws
          of the State of Delaware.  The Certificate of Incorporation of
          AMS, as in effect on the Closing Date, shall continue in full
          force and effect as the Certificate of Incorporation of AMS,
          except that upon the Merger the Certificate of Incorporation of
          AMS shall be amended to change its authorized capital stock to
          consist of only 10,000 shares of common stock, $.01 par value per
          share.

                    1.4  Merger Consideration; Conversion of AMS Common
                         ----------------------------------------------
          Stock; Cancellation of Acquisition Corp. Common Stock.  (a)  At
          -----------------------------------------------------
          the Effective Time, by virtue of the Merger and without any
          action on the part of Acquisition Corp., AMS or the holders of
          any shares of AMS Common Stock, each share of AMS Common Stock
          (except for 4,000,000 shares of AMS Common Stock owned by
          Advanced NMR), issued and outstanding immediately prior to the
          Effective Time, shall be converted into the right to receive a
          number of fully paid and nonassessable shares of common stock,
          par value $.01 per share, of Advanced NMR ("Advanced NMR Common
          Stock"), equal to the Exchange Ratio (as defined herein).  The
          number of shares of Advanced NMR Common Stock to be received by
          the AMS stockholders other than Advanced NMR in exchange for each
          share of AMS Common Stock pursuant to the Merger is hereinafter
          referred to as the "Merger Consideration."  All shares of AMS
          Common Stock to be converted into shares of Advanced NMR Common
          Stock pursuant to the Merger are hereinafter referred to as the
          "Converted Shares."  The Exchange Ratio shall mean a number of
          shares of Advanced NMR Common Stock determined by dividing (x)
          $2.625 by (y) the Advanced NMR Average Trading Price (as
          hereinafter defined), and rounding the result to six decimal 
          places; provided, however, if the quotient (x) divided by (y) is
                  --------  -------
          greater than 1.297059, then the Exchange Ratio shall be 1.297059,
          and if the quotient (x) divided by (y) is less than 1.173529,
          then the Exchange Ratio shall be 1.173529.  The Advanced NMR
          Average Trading Price shall mean the average daily closing price
          per share, rounded to six decimal places, of the Advanced NMR
          Common Stock as reported through the NASDAQ National Market
          System or on NASDAQ for the thirty (30) consecutive trading days
          ending on (and including) the fifth trading day prior to the
          Effective Date.

                    (b)  If between the date of this Agreement and the
          Effective Time the outstanding shares of AMS Common Stock and/or
          Advanced NMR Common Stock shall have been changed into a
          different number of shares or a different class by reason of a
          stock dividend, subdivision, reclassification, recapitalization,
          split-up or combination, the Merger Consideration shall be
          appropriately adjusted.

                    (c)  At the Effective Time, each share of Acquisition
          Corp. Common Stock issued and outstanding immediately prior to
          the Effective Time shall, by virtue of the Merger and without any
          action on the part of Advanced NMR, be cancelled and cease to
          exist.

                    (d)  At the Effective Time, the 4,000,000 shares of AMS
          Common Stock owned by Advanced NMR shall be converted into 1,000
          shares of AMS Common Stock.

                    1.5  Exchange of Certificates.  (a) Prior to the
                         ------------------------
          Effective Time, Advanced NMR will select an exchange agent (the
          "Exchange Agent") reasonably acceptable to AMS to effectuate the
          delivery of the consideration provided for in Section 1.4 to
                                                        -----------
          holders of AMS Common Stock upon surrender of certificates which
          immediately prior to the Effective Time represented shares of AMS
          Common Stock ("Certificates").

                    (b)  As of the Effective Time, Advanced NMR shall
          provide, or shall take all steps necessary to provide, to the
          Exchange Agent, the aggregate number of shares of Advanced NMR
          Common Stock to be issued in the Merger pursuant to Section
                                                              -------
          1.4(a) in exchange for the shares of AMS Common Stock.  The
          ------
          Exchange Agent shall, pursuant to irrevocable instructions, make
          the deliveries of the Merger Consideration required in respect of
          the Merger.

                    (c)  Promptly after the Effective Time, the Exchange
          Agent shall mail to each record holder of an outstanding
          Certificate, determined as of the Effective Date, a form letter
          of transmittal (which shall specify that delivery shall be
          effected, and risk of loss and title to Certificates shall pass,
          only upon proper delivery of the Certificates to the Exchange
          Agent), advising such holder of the terms of the exchange
          effected by the Merger and the procedure for surrendering to the
          Exchange Agent such Certificate in exchange for the Merger
          Consideration.

                    (d)  Upon surrender of a Certificate to the Exchange
          Agent, together with such letter of transmittal, duly executed,
          the holder of such Certificate shall be entitled to receive in
          exchange therefor the Merger Consideration provided for in
          Section 1.4(a) (consisting of a certificate representing that
          --------------
          whole number of shares of Advanced NMR Common Stock which such
          holder has the right to receive hereunder), and the Certificate
          so surrendered shall forthwith be canceled.  Shares of Advanced
          NMR Common Stock shall be delivered to such holder as promptly as
          practicable and (except as hereinafter provided) in no event
          later than twenty (20) days after proper delivery of the
          applicable Certificates and letters of transmittal to the
          Exchange Agent.

                    (e)  All shares of Advanced NMR Common Stock issued
          upon conversion of the shares of AMS Common Stock in accordance
          with the terms hereof shall be deemed to have been issued in full
          satisfaction of all rights pertaining to such shares of AMS
          Common Stock.

                    (f)  Neither Acquisition Corp., Advanced NMR nor AMS
          shall be liable to any holder of shares of AMS Common Stock for
          any such shares of Advanced NMR Common Stock delivered to a
          public official pursuant to any abandoned property, escheat or
          similar law.  Until surrendered in accordance with the provisions
          of Section 1.5, each Certificate representing Converted Shares
             -----------
          shall represent, for all purposes, only the right to receive the
          Merger Consideration.

                    (g)  Any shares of Advanced NMR Common Stock which
          remain undistributed to holders of AMS Common Stock for six (6)
          months after the Effective Time shall be delivered to Advanced
          NMR, upon demand, and any holder of AMS Common Stock who has not
          theretofore complied with this Section 1.5 shall thereafter look
                                         -----------
          to Advanced NMR for the Merger Consideration to which he is
          entitled.

                    1.6  No Fractional Shares.  No certificates or scrip
                         --------------------
          for fractional shares of Advanced NMR Common Stock will be
          issued, no Advanced NMR stock split or dividend shall relate to
          any fractional share interest, and no such fractional share
          interest shall entitle the owner thereof to vote or to any rights
          of or as a stockholder of Advanced NMR.  In lieu of issuing any
          such fractional shares to which a holder of AMS Common Stock
          would otherwise be entitled to receive, the Exchange Agent shall
          round up or down to the nearest whole share.

                    1.7  Certificates in Other Names.  If any certificate
                         ---------------------------
          evidencing shares of Advanced NMR Common Stock is to be issued in
          a name other than that in which the Certificate surrendered in
          exchange therefore is registered, it shall be a condition of the
          issuance thereof that the Certificate so surrendered shall be
          properly endorsed and otherwise in proper form for transfer and
          that the person requesting such exchange pay to the Exchange
          Agent or to Advanced NMR acting solely in its corporate capacity,
          as the case may be, any transfer or other taxes required by
          reason of the issuance of a certificate for shares of Advanced
          NMR Common Stock in any name other than that of the registered
          holder of the Certificate surrendered or otherwise required or
          establish to the satisfaction of the Exchange Agent or of
          Advanced NMR acting solely in its corporate capacity, as the case
          may be, that such tax has been paid or is not payable.

                    1.8  Treatment of AMS Options.  At the Effective Time,
                         ------------------------
          Advanced NMR shall assume all of the rights and obligations of
          AMS pursuant to the AMS Option Plans (as hereinafter defined),
          except that Advanced NMR shall not be obligated to issue AMS
          Common Stock upon the exercise of the Options (as hereinafter
          defined), but, pursuant to the terms of such Options as modified
          in accordance with this Section 1.8, shall instead be obligated
                                  -----------
          to issue, for each share of AMS Common Stock that would have been
          issuable upon the exercise of such Options immediately prior to
          the Effective Time, a number of shares of Advanced NMR Common
          Stock equal to the Merger Consideration.  (All such Options are
          sometimes hereinafter referred to as the "Derivative
          Securities".)  At or prior to the Effective Time, AMS shall make
          all necessary and appropriate adjustments to the Derivative
          Securities to provide that such Derivative Securities shall be
          amended and converted as of the Effective Time into an option to
          acquire shares of Advanced NMR Common Stock as described in the
          first sentence of this Section.  All other terms and conditions
          of such options including, without limitation, terms and
          conditions relating to the exercisability, and the maximum term
          of such options shall be identical to the terms of the respective
          Derivative Securities being replaced.  No fractional shares of
          Advanced NMR Common Stock shall be issued upon the exercise of
          such Derivative Securities, and if the number of shares of
          Advanced NMR Common Stock issuable upon exercise of all or any
          portion of such Derivative Securities shall include a fraction of
          a share, then the number of shares of Advanced NMR Common Stock
          deliverable upon exercise shall be rounded up or down to the
          nearest whole share.  The term "Options" and "AMS Option Plans"
          are defined in Schedule 1.8.
                         ------------


                                      ARTICLE II

                                       CLOSING

                    2.1  Closing Date.  The closing of the Merger (the
                         ------------
          "Closing") shall take place at the offices of Reid & Priest LLP,
          40 West 57th Street, New York, New York 10019 at 10:00 a.m., New
          York time, on that day on which the last of the conditions set
          forth in Articles VI and VII shall have been satisfied or, if
          permissible, waived (other than those conditions which by their
          terms are to occur only at the Closing), or on and at such other
          date, time and place as Advanced NMR, Acquisition Corp. and AMS
          may agree (the date of the Closing hereinafter being referred to
          as the "Closing Date").


                                     ARTICLE III

                        REPRESENTATIONS AND WARRANTIES OF AMS

                    AMS hereby represents and warrants to Advanced NMR and
          Acquisition Corp. as follows:

                    3.1  Due Incorporation.  AMS is a corporation duly
                         -----------------
          organized, validly existing and in good standing under the laws
          of its jurisdiction of organization, with all requisite power and
          authority to own, lease and operate its properties and to carry
          on its business as they are now being owned, leased, operated and
          conducted.  AMS is qualified to do business and is in good
          standing as a foreign corporation in the States of Massachusetts
          and New Jersey which are the only jurisdictions where the nature
          of the properties owned, leased or operated by it and the
          business transacted by it require such qualification.  AMS has no
          direct or indirect subsidiaries, either wholly or partially
          owned, and AMS does not hold any voting or management interest in
          any corporation, proprietorship, firm, partnership, limited
          partnership, limited liability company, trust, association,
          individual or other entity (a "Person") or own any security
          issued by any Person.

                    3.2  Due Authorization.  AMS has full power and
                         -----------------
          authority to enter into this Agreement and the Certificate of
          Merger (the "Related Agreement") and, subject to obtaining the
          necessary approval of this Agreement and the Merger by the
          stockholders of AMS, to consummate the transactions contemplated
          hereby and thereby.  The execution, delivery and performance by
          AMS of this Agreement and the Related Agreement have been duly
          and validly approved and authorized by the Board of Directors of
          AMS, and, subject to obtaining the necessary approval of the
          Merger by the AMS stockholders, the Related Agreement and the
          transactions contemplated hereby and thereby.  AMS has duly and
          validly executed and delivered this Agreement and will duly and
          validly execute and deliver the Related Agreement.  Subject to
          obtaining the necessary approval of the AMS stockholders, this
          Agreement constitutes the legal, valid and binding obligation of
          AMS and the Related Agreement to which AMS is a party, will, upon
          execution thereof by AMS, constitute the legal, valid and binding
          obligation of AMS, in each case enforceable in accordance with
          their respective terms, except as such enforceability may be
          limited by applicable bankruptcy, insolvency, fraudulent
          transfer, moratorium, reorganization or other laws from time to
          time in effect which affect creditors' rights generally and by
          general principles of equity (regardless of whether such
          enforceability is considered in a proceeding in equity or at
          law).

                    3.3  Non-Contravention; Consents and Approvals.  (a)
                         -----------------------------------------
          The execution and delivery of this Agreement by AMS do not, and
          the performance by AMS of its obligations hereunder and the
          consummation of the transactions contemplated hereby will not,
          conflict with, result in a violation or breach of, constitute
          (with or without notice or lapse of time or both) a default
          under, result in or give to any person any right of payment or
          reimbursement, termination, cancellation, modification or
          acceleration of, or result in the creation or imposition of any
          lien upon any of the assets or properties of AMS under, any of
          the terms, conditions or provisions of (i) the Certificate of
          Incorporation or By-Laws of AMS, or (ii) subject to obtaining the
          necessary approval of this Agreement and the Merger by the AMS
          stockholders and the taking of the actions described in paragraph
          (b) of this Section, (x) any statute, law, rule, regulation or
          ordinance (together, "Laws"), or any judgment, decree, order,
          writ, permit or license, of any Governmental Entity (as defined
          in paragraph (b) below), applicable to AMS or any of its assets
          or properties, or (y) any contract, agreement or commitment to
          which AMS is a party or by which AMS or any of its assets or
          properties is bound, excluding from the foregoing clauses (x) and
          (y) conflicts, violations, breaches, defaults, terminations,
          modifications, accelerations and creations and impositions of
          liens which would not have an AMS Material Adverse Effect or
          result in the inability of AMS to consummate the transactions
          contemplated by this Agreement.

                    (b)  No consent, approval, order or authorization of,
          or registration, declaration or filing with any court,
          administrative agency or commission or other governmental
          authority or instrumentality, domestic or foreign (a
          "Governmental Entity"), is required by AMS in connection with the
          execution and delivery of this Agreement and the Related
          Agreement or the consummation by AMS or the AMS stockholders of
          the transactions contemplated hereby and thereby, the failure to
          obtain which would have an AMS Material Adverse Effect or result
          in the inability of AMS to consummate the transactions
          contemplated hereby, except for:

                        (i)  the filing of the Certificate of Merger with
                    the Secretary of State of the State of Delaware in
                    accordance with the requirements of the DGCL and if
                    applicable, the filing of the appropriate documents
                    with the relevant authorities of other states in which
                    AMS is qualified to transact business; and

                         (ii)  the filing of a proxy statement ("Proxy
                    Statement") with the Securities and Exchange Commission
                    ("Commission") pursuant to the Securities Exchange Act
                    of 1934, as amended (the "1934 Act"), and the
                    Securities Act of 1933, as amended (the "1933 Act") and
                    the declaration of the effectiveness of the
                    Registration Statement (as hereinafter defined) by the
                    Commission and filings with various blue sky
                    authorities.

                    3.4  Capitalization.  (a)  The authorized capital stock
                         --------------
          of AMS consists of 5,000,000 shares of AMS Preferred Stock and
          25,000,000 shares of AMS Common Stock.  On the date hereof, there
          are issued and outstanding no shares of AMS Preferred Stock and
          6,598,376 shares of AMS Common Stock.  All of the issued and
          outstanding shares of AMS Common Stock are validly issued, fully
          paid and nonassessable and the issuance thereof was not subject
          to preemptive rights.

                    (b)  Except for shares issuable pursuant to the AMS
          Option Plans, there are no shares of AMS Common Stock or other
          equity securities (whether or not such securities have voting
          rights) of AMS issued or outstanding or any subscriptions,
          options, warrants, calls, rights, convertible securities or other
          agreements or commitments of any character obligating AMS to
          issue, transfer or sell any shares of capital stock or other
          securities (whether or not such securities have voting rights) of
          AMS.  Except for the Escrow Agreement dated January 23, 1993 (the
          "Escrow Agreement") among AMS, Advanced NMR and American Stock
          Transfer & Trust Company, there are no outstanding contractual
          obligations of AMS which relate to the purchase, sale, issuance,
          repurchase, redemption, acquisition, transfer, disposition,
          holding or voting of any shares of capital stock or other
          securities of AMS.

                    3.5  Financial Statements; Undisclosed Liabilities;
                         ----------------------------------------------
          Other Documents.  (a)  For purposes of this Agreement, "AMS
          ---------------
          Financial Statements" shall mean the audited financial statements
          of AMS as of September 30, 1995 and December 31, 1994 (including
          all notes thereto) which are included in the AMS SEC Documents
          (as defined in Section 3.6), consisting of the consolidated
          balance sheets at such dates and the related consolidated
          statements of income, stockholders' equity and cash flows for the
          nine-month period ended September 30, 1995 and the twelve-month
          period ended December 31, 1994.  The AMS Financial Statements
          have been prepared in accordance with GAAP consistently applied
          (except as may be indicated therein or in the notes thereto) and
          present fairly the consolidated financial position of AMS as at
          the dates thereof and the consolidated results of operations and
          cash flows of AMS for the periods covered thereby.

                    (b)  AMS does not have any liabilities or obligations
          of any nature, whether accrued, absolute, contingent or
          otherwise, which individually or in the aggregate could be
          reasonably expected to have an AMS Material Adverse Effect except
          (i) as set forth on or reflected in the AMS Financial Statements
          as of and for the period ended September 30, 1995 or (ii)
          liabilities and obligations incurred since September 30, 1995 in
          the ordinary and usual course of its business.

                    3.6  Commission Filings.  AMS has timely filed all
                         ------------------
          required forms, reports and other documents with the Commission
          since January 1, 1994, all of which complied when filed, in all
          material respects, with all applicable requirements of the 1933
          Act and 1934 Act as applicable.  AMS has heretofore delivered to
          Acquisition Corp. complete and correct copies of (i) its Annual
          Report on Form 10-K for the nine-month period ended September 30,
          1995, (ii) all proxy statements relating to AMS' meetings of
          stockholders (whether annual or special) since January 1, 1994,
          and (iii) all other reports, forms and other documents filed by
          AMS with the Commission since January 1, 1994 (together, the "AMS
          SEC Documents").  As of their respective dates, the AMS SEC
          Documents (including all exhibits and schedules thereto and
          documents incorporated by reference therein) did not contain any
          untrue statement of material fact or omit to state a material
          fact required to be stated therein, or necessary to make the
          statements therein, in light of the circumstances in which they
          were made, not misleading.  The audited financial statements and
          the unaudited interim financial statements of AMS included or
          incorporated by reference in the AMS SEC Documents were prepared
          in accordance with GAAP consistently applied during the periods
          involved (except as may be otherwise indicated in the notes
          thereto and except with respect to unaudited statements as
          permitted by Form 10-Q of the Commission), and fairly present the
          consolidated financial position of AMS as of the dates thereof
          and the consolidated results of its operations and cash flows for
          the periods then ended (subject, in the case of any unaudited
          interim financial statements, to normal year-end adjustments).

                    3.7  No Material Adverse Effects or Changes.  Except as
                         --------------------------------------
          listed on Schedule 3.7, or as disclosed in or reflected in the
                    ------------
          AMS SEC Documents, or as contemplated by this Agreement or the
          Related Agreements, since September 30, 1995, AMS has not
          (i) suffered any damage, destruction or Loss to any of its assets
          or properties (whether or not covered by insurance) which is
          having or could reasonably be expected to have an AMS Material
          Adverse Effect, or (ii) increased the compensation of any
          executive officer of AMS.  "Loss" shall mean liabilities, losses,
          costs, claims, damages (including consequential damages),
          penalties and expenses (including attorneys' fees and expenses
          and costs of investigation and litigation).  An "AMS Material
          Adverse Effect" shall mean an effect on or circumstance involving
          the business, operations, assets, liabilities, results of
          operations, cash flows or condition (financial or otherwise) of
          AMS which is materially adverse to AMS.  Except as disclosed in
          the AMS SEC Documents filed prior to the date of this Agreement
          or in Schedule 3.7 hereto or in the AMS Financial Statements,
                ------------
          since September 30, 1995 AMS has not (v) declared, set aside or
          paid any dividend or other distribution in respect of its capital
          stock; (w) made any direct or indirect redemption, purchase or
          other acquisition of any shares (other than purchases in
          connection with the exercise of options) of its capital stock or
          made any payment (other than dividends) to any of its
          stockholders (in their capacity as stockholders); (x) issued or
          sold any shares of its capital stock or any options, warrants or
          other rights to purchase any such shares or any securities
          convertible into or exchangeable for such shares or taken any
          action to reclassify or recapitalize or split up its capital
          stock; (y) mortgaged, pledged or subjected to any lien, lease,
          security interest, encumbrance or other restriction, any of its
          material properties or assets except in the ordinary and usual
          course of its business and consistent with past practice; or (z)
          except in the ordinary and usual course of its business and
          consistent with its past practice forgiven or canceled any
          material debt or claim, waived any material right.

                    3.8  Registration Statement and Proxy Statement/
                         -------------------------------------------
          Prospectus.  None of the information supplied, or to be supplied,
          ----------
          by AMS or any of its accountants, counsel or other authorized
          representatives for inclusion in (a) the Registration Statement
          on Form S-4 to be filed with the Commission by Advanced NMR under
          the 1933 Act for the purpose of registering the shares of
          Advanced NMR Common Stock to be issued in the Merger (the
          "Registration Statement") or (b) the proxy statement to be
          distributed in connection with the meeting of stockholders of AMS
          ("AMS Stockholders' Meeting") to vote upon this Agreement (the
          "Proxy Statement/Prospectus") will, in the case of the Proxy
          Statement/Prospectus or any amendments thereof or supplements
          thereto, at the time of the mailing of the Proxy
          Statement/Prospectus and any amendments or supplements thereto,
          and at the time of the AMS Stockholders' Meeting to be held in
          connection with the Merger, or, in the case of the Registration
          Statement and any amendments thereto, at the time it is declared
          effective and at the Effective Time, contain any untrue statement
          of a material fact or omit to state any material fact required to
          be stated therein or necessary in order to make the statements
          therein, in light of the circumstances under which they are made,
          not misleading, it being understood and agreed that no
          representation or warranty is made by AMS with respect to any
          information supplied by Advanced NMR or its accountants, counsel
          or other authorized representatives.  If at any time prior to the
          Effective Time any event with respect to AMS, its officers and
          directors shall occur which is or should be described in an
          amendment of, or a supplement to, the Proxy Statement/Prospectus
          or the Registration Statement, such event shall be so described
          and the presentation in such amendment or supplement of such
          information will not contain any statement which, at the time and
          in light of the circumstances under which it is made, is false or
          misleading in any material respect or omits to state any material
          fact required to be stated therein or necessary in order to make
          the statements therein, in light of the circumstances under which
          they were made, not false or misleading.

                    3.9  Intellectual Property.  Schedule 3.9 is a true and
                         ---------------------   ------------
          complete list of all of the trademarks, tradenames, service
          marks, and patents material to AMS' MRI technology (including any
          registrations of or pending applications for any of the
          foregoing) ("Intellectual Property") used by AMS in the conduct
          of its business.  Except as disclosed on Schedule 3.9:
                                                   ------------

                    (a)  all of such Intellectual Property is owned by AMS
          free and clear of all liens, and is not subject to any license,
          royalty or other agreement, except the License Agreement dated as
          of July 29, 1992 ("License Agreement") between AMS and Advanced
          NMR;

                    (b)  none of such Intellectual Property has been or is
          the subject of any pending or, to the best of AMS' knowledge,
          threatened litigation or claim of infringement; or

                    (c)  no license or royalty agreement to which AMS is a
          party is in breach or default by any party thereto except where
          such breach or default would not have an AMS Material Adverse
          Effect or is the subject of any notice of termination given or,
          to AMS' knowledge, threatened.

                    3.10  Tax Returns and Audits.  AMS has duly filed all
                          ----------------------
          federal, state, local and foreign tax returns, reports and forms
          required to be filed by it, except where the failure to so file
          would not have an AMS Material Adverse Effect.  AMS has duly paid
          (except for Taxes being contested in good faith) or made adequate
          provisions on its books in accordance with GAAP for the payment
          of all Taxes which have been incurred or are due and payable, and
          AMS will on or before the Effective Time of the Merger make
          adequate provision on its books in accordance with GAAP for all
          Taxes payable for any period through the Effective Time of the
          Merger for which no return is required to be filed prior to the
          Effective Time.  The federal and state income tax returns of AMS
          have never been examined by the Internal Revenue Service or state
          taxing authority, respectively, nor has AMS granted or given any
          extensions or waivers of the statute of limitations with respect
          to any such federal and state income tax returns.  AMS is not
          aware of any basis for the assertion of any deficiency against it
          for Taxes, which, if adversely determined, would have an AMS
          Material Adverse Effect.  For purposes of this Agreement, "Taxes"
          shall mean all taxes, assessments and governmental charges
          imposed by any federal, state, local or foreign government,
          taxing authority, subdivision or agency thereof, including, but
          not limited to, any withholding, payroll, employment, custom,
          duty, sales, any other governmental fee or assessment, and
          penalties, in addition to any liability to a third party for such
          amounts.

                    3.11  Litigation.  There are no actions, suits,
                          ----------
          arbitrations, regulatory proceedings or other litigation,
          proceedings or governmental investigations pending or, to AMS'
          knowledge, threatened against or affecting AMS any of its
          officers or directors in their capacity as such, or any of its
          property or business which could reasonably be expected to have
          an AMS Material Adverse Effect.  AMS is not subject to any order,
          judgment, decree, injunction, stipulation or consent order of or
          with any court or other Governmental Entity, other than orders of
          general applicability.

                    3.12  Compliance with Applicable Laws.  AMS holds all
                          -------------------------------
          permits, licenses, variances, exemptions, orders and approvals of
          all Governmental Entities which are required in the operation of
          its business (the "AMS Permits"), except for those the failure of
          which to hold would not have an AMS Material Adverse Effect.  AMS
          is in compliance with the terms of the AMS Permits, except where
          the failure so to comply would not have an AMS Material Adverse
          Effect.  To AMS' knowledge, AMS is not in violation of any law,
          ordinance or regulation of any Governmental Authority, including
          environmental and labor laws and regulations, except for possible
          violations which individually and in the aggregate do not, and,
          insofar as reasonably can be foreseen by AMS, will not in the
          future have an AMS Material Adverse Effect.

                    3.13  Medical Devices.  Except as set forth on
                          ---------------
          Schedule 3.13, AMS has not applied for premarket approval of, or
          -------------
          510(k) notification to, the U.S. Food and Drug Administration
          (the "FDA") for any products it plans to sell.  Except as set
          forth on Schedule 3.13, there are no products proposed to be sold
                   -------------
          by AMS for which pre-market approval or 510(k) notification is
          required.

                    3.14  Contracts; No Defaults.  Except as disclosed in
                          ----------------------
          the AMS SEC Documents, neither AMS, nor to AMS' knowledge any
          other party thereto, is in breach or violation of, or in default
          in the performance or observance of any term or provision of, and
          no event has occurred or by reason of the Merger would occur
          which, with notice or lapse of time or both, could be reasonably
          expected to result in a default under, any contract, agreement or
          commitment to which AMS is a party or by which AMS or any of its
          assets or properties is bound, except for breaches, violations
          and defaults which are not having and could not be reasonably
          expected to have an AMS Material Adverse Effect.  AMS is not is
          required to give any notice to any person regarding this
          Agreement or the Related Agreement or the transactions
          contemplated hereby or thereby other than any notice, the failure
          of which to give would not have an AMS Material Adverse Effect.

                    3.15  Fees of Brokers, Finders and Financial Advisors.
                          -----------------------------------------------
          Except for the Special Committee ("Special Committee") of the AMS
          Board of Directors' engagement of Houlihan Lokey Howard & Zukin,
          whose fees and expenses shall be paid by AMS, neither AMS, nor
          any officer, director, or employee of AMS, has employed any
          broker, finder or investment banker or incurred any liability for
          any brokerage or investment banking fees, commissions or finders'
          fees in connection with the transactions contemplated by this
          Agreement.

                    3.16  Special Committee Recommendation; Board of
                          ------------------------------------------
          Directors Recommendation.  The Special Committee of the Board of
          ------------------------
          Directors of AMS has duly adopted at a special meeting duly held
          on February 4, 1996 resolutions recommending to the Board
          approval of this Agreement, the Related Agreement, and the
          Merger, and the transactions contemplated hereby on the terms and
          conditions set forth herein.  Upon the recommendation of the
          Special Committee, the Board of Directors of AMS has duly adopted
          at a special meeting of such Board duly held on February 4, 1996
          resolutions approving this Agreement, the Related Agreement, and
          the Merger, and the transactions contemplated hereby on the terms
          and conditions set forth herein and has determined to recommend
          that the stockholders of AMS approve this Agreement and the
          Merger (subject to the fiduciary duty of the AMS Board of
          Directors determined by the directors after consultation with
          legal counsel).

                    3.17  Opinion of Financial Advisor.  AMS has received
                          ----------------------------
          the opinion of Houlihan Lokey Howard & Zukin, to the effect that,
          as of the date hereof, the consideration to be received in the
          Merger by the stockholders of AMS (other than Advanced NMR) is
          fair from a financial point of view to the stockholders of AMS,
          and a true and complete copy of such opinion has been delivered
          to Advanced NMR prior to the execution of this Agreement.


                                      ARTICLE IV

                          REPRESENTATIONS AND WARRANTIES OF
                          ACQUISITION CORP. AND ADVANCED NMR

                    Acquisition Corp. and Advanced NMR, jointly and
          severally, hereby represent and warrant to AMS as follows:

                    4.1  Due Incorporation.  Each of Advanced NMR,
                         -----------------
          Acquisition Corp. and Advanced NMR's wholly-owned subsidiary,
          Medical Diagnostics, Inc., a Delaware corporation (the
          "Subsidiary") (Advanced NMR, Acquisition Corp. and the Subsidiary
          are referred to collectively herein as the "ANMR Companies") is a
          corporation duly organized, validly existing and in good standing
          under the laws of its jurisdiction of incorporation, with all
          requisite power and authority to own, lease and operate its
          properties and to carry on its business as now being conducted. 
          Each of the ANMR Companies is qualified to do business and is in
          good standing as a foreign corporation in each jurisdiction where
          the nature of the properties owned, leased or operated by it and
          the business transacted by it require such qualification, except
          where the failure to be so qualified could not have an ANMR
          Material Adverse Effect (as defined in Section 4.7 hereof).

                    4.2  Due Authorization.  Each of Advanced NMR and
                         -----------------
          Acquisition Corp. has full power and authority to enter into this
          Agreement and the Related Agreement to which it is a party and to
          consummate the transactions contemplated hereby and thereby.  The
          execution, delivery and performance by Advanced NMR of this
          Agreement has been duly and validly approved by the Board of
          Directors of Advanced NMR, and no other actions or proceedings on
          the part of Advanced NMR are necessary to authorize this
          Agreement.  The execution, delivery and performance by
          Acquisition Corp. of this Agreement and the Related Agreement
          have been duly and validly approved by the Board of Directors and
          stockholder of Acquisition Corp., and no other actions or
          proceedings on the part of Acquisition Corp. or its stockholder
          are necessary to authorize this Agreement and the Related
          Agreement.  Each of Advanced NMR and Acquisition Corp. has duly
          and validly executed and delivered this Agreement and Acquisition
          Corp. has duly and validly executed and delivered (or will duly
          and validly execute and deliver on or prior to the Closing Date)
          the Related Agreement.  This Agreement constitutes the legal,
          valid and binding obligations of each of Advanced NMR and
          Acquisition Corp., and the Related Agreement will, upon
          execution, constitute the legal, valid and binding obligation of
          Acquisition Corp., in each case enforceable in accordance with
          their respective terms, except as such enforceability may be
          limited by applicable bankruptcy, insolvency, fraudulent
          transfer, moratorium, reorganization or other laws from time to
          time in effect which affect creditors' rights generally and by
          general principles of equity (regardless of whether such
          enforceability is considered in a proceeding in equity or at
          law).

                    4.3  Non-Contravention; Consents and Approvals.  (a)
                         -----------------------------------------
          The execution and delivery of this Agreement by Advanced NMR and
          Acquisition Corp. does not, and the performance by Advanced NMR
          and Acquisition Corp. of their obligations hereunder and the
          consummation of the transactions contemplated hereby will not,
          conflict with, result in a violation or breach of, constitute
          (with or without notice or lapse of time or both) a default
          under, result in or give to any person any right of payment or
          reimbursement, termination, cancellation, modification or
          acceleration of, or result in the creation or imposition of any
          lien upon any of the assets or properties of any of the ANMR
          Companies under, any of the terms, conditions or provisions of
          (i) the certificate of incorporation or bylaws of each of the
          ANMR Companies, or (ii) subject to the taking of the actions
          described in paragraph (b) of this Section, (x) any statute, law,
          rule, regulation or ordinance (together, "Laws"), or any
          judgment, decree, order, writ, permit or license, of any
          Governmental Entity, or (y) except for the Credit Agreement dated
          August 31, 1995 between the Subsidiary and Chemical Bank, and the
          related security agreements and guaranties, any contract,
          agreement or commitment to which any ANMR Company is a party or
          by which any ANMR Company or any of their respective assets or
          properties is bound, excluding from the foregoing clauses (x) and
          (y) conflicts, violations, breaches, defaults, terminations,
          modifications, accelerations and creations and impositions of
          liens which would not have an ANMR Material Adverse Effect or
          result in the inability of Advanced NMR or Acquisition Corp. to
          consummate the transactions contemplated by this Agreement.

                    (b)  No consent, approval, order or authorization of,
          or registration, declaration or filing with any Governmental
          Entity is required by Advanced NMR or Acquisition Corp. in
          connection with the execution and delivery of this Agreement and
          the Related Agreement or the consummation by each of Advanced NMR
          and Acquisition Corp. or each of their respective stockholders of
          the transactions contemplated hereby and thereby, the failure to
          obtain which would have an ANMR Material Adverse Effect or result
          in the inability of Advanced NMR or Acquisition Corp. to
          consummate the transactions contemplated hereby, except for:

                         (i)  the filing of the Certificate of Merger with
               the Secretary of State of the State of Delaware in
               accordance with the requirements of the DGCL; and

                         (ii)  the filing of the Proxy Statement/Prospectus
               with the Commission pursuant to the 1933 Act and the
               declaration of the effectiveness of the Registration
               Statement by the Commission and filings with various blue
               sky authorities.

                    4.4  Capitalization.  (a)  The authorized capital stock
                         --------------
          of Advanced NMR consists of 1,000,000 shares of Preferred Stock,
          $.01 par value per share ("Advanced NMR Preferred Stock") and
          50,000,000 shares of Advanced NMR Common Stock.  On the date
          hereof, there are no shares of Advanced NMR Preferred Stock
          issued and outstanding and 30,183,745 shares of Advanced NMR
          Common Stock issued and outstanding.  The authorized capital
          stock of Acquisition Corp. consists of 1,000 shares of
          Acquisition Corp. Common Stock, of which there are 100 shares
          issued and outstanding on the date hereof.  All of the issued and
          outstanding shares of Advanced NMR and Acquisition Corp. Common
          Stock are, and all shares of Advanced NMR Common Stock to be
          issued to AMS stockholders in the Merger or upon exercise of the
          Derivative Securities will be, validly issued, fully paid and
          nonassessable and the issuances thereof were not and will not be
          subject to preemptive rights.  As of December 31, 1995, there are
          4,311,955 shares of Advanced NMR Common Stock reserved for
          issuance under Advanced NMR stock option plans and warrants (the
          "ANMR Derivative Securities").

                    (b)  Except for the ANMR Derivative Securities, there
          are no shares of Advanced NMR Common Stock and Acquisition Corp.
          Common Stock or other equity securities (whether or not such
          securities have voting rights) of Advanced NMR and Acquisition
          Corp. issued or outstanding or any subscriptions, options,
          warrants, calls, rights, convertible securities or other
          agreements or commitments of any character obligating Advanced
          NMR and/or Acquisition Corp. to issue, transfer or sell any
          shares of capital stock or other securities (whether or not such
          securities have voting rights) of Advanced NMR and Acquisition
          Corp.  There are no outstanding contractual obligations of
          Advanced NMR or Acquisition Corp. which relate to the purchase,
          sale, issuance, repurchase, redemption, acquisition, transfer,
          disposition, holding or voting of any shares of capital stock or
          other securities of each of Advanced NMR and Acquisition Corp.

                    4.5  Financial Statements; Undisclosed Liabilities;
                         ----------------------------------------------
          Other Documents.  (a)  For purposes of this Agreement, "Advanced
          ---------------
          NMR Financial Statements" shall mean the audited financial
          statements of Advanced NMR as of September 30, 1995 and December
          31, 1994 (including all notes thereto) which are included in the
          ANMR SEC Documents (as defined in Section 4.6), consisting of the
          balance sheets at such dates and the related statements of
          operations, stockholders' equity and cash flows for the nine-
          month period ended September 30, 1995 and the twelve-month period
          ended December 31, 1994.  The Advanced NMR Financial Statements
          have been prepared in accordance with GAAP consistently applied
          and present fairly the financial position, of Advanced NMR as at
          the dates thereof and the results of operations and cash flows of
          Advanced NMR for the periods covered thereby.

                    (b)  Advanced NMR does not have any liabilities or
          obligations of any nature, whether accrued, contingent, absolute
          or otherwise, which individually or in the aggregate could be
          reasonably expected to have an ANMR Material Adverse Effect
          except (i) as set forth in the September 30, 1995 balance sheet
          (the "ANMR Base Balance Sheet") in the Advanced NMR Form 10-K for
          fiscal 1995 or (ii) liabilities or obligations incurred since
          September 30, 1995 in the ordinary and usual course of its
          business.

                    4.6  Commission Filings.  Advanced NMR has in a timely
                         ------------------
          manner filed all required forms, reports and other documents with
          the Commission since January 1, 1994, all of which complied when
          filed, in all material respects, with all applicable requirements
          of the 1933 Act and 1934 Act.  Advanced NMR has heretofore
          delivered to AMS complete and correct copies of (i) its Annual
          Report on Form 10-K for the nine-month period ended September 30,
          1995, as filed with the Commission, (ii) all proxy statements
          relating to Advanced NMR's meetings of stockholders (whether
          annual or special) since January 1, 1994, and (iii) all other
          reports, forms and other documents filed by Advanced NMR with the
          Commission since January 1, 1994 (together, the "ANMR SEC
          Documents").  As of their respective dates, the ANMR SEC
          Documents (including all exhibits and schedules thereto and
          documents incorporated by reference therein) did not contain any
          untrue statement of material fact or omit to state a material
          fact required to be stated therein, or necessary to make the
          statements therein, in light of the circumstances in which they
          were made, not misleading.  The audited financial statements and
          the unaudited interim financial statements of Advanced NMR,
          included or incorporated by reference in the ANMR SEC Documents
          were prepared in accordance with GAAP consistently applied during
          the periods involved (except as may be otherwise indicated in the
          notes thereto and except with respect to unaudited statements as
          permitted by Form 10-Q of the Commission), and fairly present the
          financial position of Advanced NMR as of the dates thereof and
          the results of its operations and cash flows for the periods then
          ended (subject, in the case of any unaudited interim financial
          statements, to normal year-end adjustments).

                    4.7  No Material Adverse Effects or Changes.  Except as
                         --------------------------------------
          listed on Schedule 4.7, or as disclosed in or reflected in the
                    ------------
          financial statements included in the ANMR SEC Documents, or as
          contemplated by this Agreement or the Related Agreements, since
          September 30, 1995, none of the ANMR Companies has (i) suffered
          any damage, destruction or Loss to any of its assets or
          properties (whether or not covered by insurance) which is having
          or could be expected to have an ANMR Material Adverse Effect, or
          (ii) increased the compensation of any executive officer of any
          ANMR Company except for increases consistent with past practices. 
          An "ANMR Material Adverse Effect" shall mean an effect on or
          circumstances involving the business, operations, assets,
          liabilities, results of operations, cash flows or condition
          (financial or otherwise) which is materially adverse to the ANMR
          Companies, taken as a whole.

                    4.8  Registration Statement and Proxy Statement/
                         -------------------------------------------
          Prospectus.  None of the information supplied, or to be supplied
          ----------
          by, Advanced NMR or any of its accountants, counsel or other
          authorized representatives to the AMS Board of Directors or its
          Special Committee in connection with this Agreement or for
          inclusion in (a) the Registration Statement or (b) the Proxy
          Statement/Prospectus will, in the case of the Proxy
          Statement/Prospectus or any amendments thereof or supplements
          thereto, at the time of the mailing of the Proxy
          Statement/Prospectus and any amendments or supplements thereto, 
          or, in the case of the Registration Statement and any amendments
          thereto, at the time it is declared effective and at the
          Effective Time, contain any untrue statement of a material fact
          or omit to state any material fact required to be stated therein
          or necessary in order to make the statements therein, in light of
          the circumstances under which they are made, not misleading, it
          being understood and agreed that no representation or warranty is
          made by Advanced NMR with respect to any information supplied by
          AMS or its accountants, counsel or other authorized
          representatives.  If at any time prior to the Effective Time any
          event with respect to Advanced NMR, its officers or directors,
          shall occur which is or should be described in an amendment of,
          or a supplement to, the Proxy Statement/Prospectus or the
          Registration Statement, such event shall be so described and the
          presentation in such amendment or supplement of such information
          will not contain any statement which, at the time and in light of
          the circumstances under which it is made, is false or misleading
          in any material respect or omits to state any material fact
          required to be stated therein or necessary in order to make the
          statements therein, in light of the circumstances under which
          they were made, not false or misleading.  The Registration
          Statement will comply as to form in all material respects with
          all applicable laws, including the provisions of the 1933 Act and
          the rules and regulations promulgated thereunder.

                    4.9  Intellectual Property.  Schedule 4.9 is a true and
                         ---------------------   ------------
          complete list of all of Intellectual Property used by Advanced
          NMR and the Subsidiary in the conduct of their businesses. 
          Except as disclosed on Schedule 4.9:
                                 ------------

                    (a)  all of the Intellectual Property is owned by
          Advanced NMR and the Subsidiary free and clear of all liens, and
          is not subject to any license, royalty or other agreement, other
          than the License Agreement;

                    (b)  none of the Intellectual Property has been or is
          the subject of any pending or, to the best of Advanced NMR's
          knowledge, threatened litigation or claim of infringement; or

                    (c)  no license or royalty agreement to which Advanced
          NMR or the Subsidiary is a party is in breach or default by any
          party thereto or the subject of any notice of termination given
          or threatened.

                    4.10  Insurance.  Each of Advanced NMR and the
                          ---------
          Subsidiary is insured with reputable insurers against all risks
          and in such amounts normally insured against by companies of the
          same type and in the same line of business as Advanced NMR and
          the Subsidiary.

                    4.11  Employee Benefit Plans and Employment Agreements.
                          ------------------------------------------------
          (a)  For purposes of this Agreement, the term "Advanced NMR
          Employee Plan" shall mean any pension, profit sharing,
          retirement, deferred compensation, bonus or other incentive plan,
          any other employee program, arrangement, agreement or
          understanding, any medical, vision, dental or other health plan,
          any life insurance plan, or any other employee benefit plan,
          including, without limitation, any "employee benefit plan" as
          defined in Section 3(3) of ERISA to which Advanced NMR or the
          Subsidiary contributes or is a party or is bound or under which
          it may have a liability and under which its employees or retirees
          (or their beneficiaries) are eligible to participate or derive a
          benefit.  

                    (b)  The only Advanced NMR Employee Plan which is
          intended to be qualified under Section 401(a) of the Code is the
          Advanced NMR Systems, Inc. 401(k) Retirement Plan (the "Advanced
          NMR Qualified Plan").  The Advanced NMR Qualified Plan has
          received a favorable determination letter from the Internal
          Revenue Service.  During the six year period preceding the
          Closing Date, neither Advanced NMR nor any other entity with
          which Advanced NMR is in any way affiliated has sponsored or
          otherwise had an obligation to contribute to any "defined benefit
          plan" (within the meaning of the Section 3(35) of ERISA).

                    (c)  The Advanced NMR Employee Plan has been maintained
          in substantial compliance with its terms and in all material
          respects with the applicable requirements of law (including,
          without limitation, ERISA and the Code) and, other than claims
          for benefits submitted by participants or beneficiaries in the
          ordinary course, there is no legal action, investigation, claim
          or proceeding pending or, to the knowledge of Advanced NMR,
          threatened against or affecting any Advanced NMR Employee Plan
          which would have an ANMR Material Adverse Effect.

                    (d)  There is no employment contract or agreement
          covering any employee of Advanced NMR or the Subsidiary (i) that
          could give rise to the payment of any amount that would not be
          deductible by reason of Section 280G of the Code or (ii) that is
          not terminable at will by Advanced NMR or the Subsidiary.

                    4.12  Labor Matters.  Each of the ANMR Companies has
                          -------------
          conducted and currently is conducting, its respective business in
          full compliance with all laws relating to employment and
          employment practices, terms and conditions of employment, wages
          and hours and nondiscrimination in employment except where such
          failure to be in compliance would not have an ANMR Material
          Adverse Effect.  The relationship of the ANMR Companies with its
          respective employees is generally satisfactory, and there is, and
          during the past three years there has been, no labor strike,
          dispute, slow-down, work stoppage or other labor difficulty
          pending or, to Advanced NMR's knowledge, threatened against or
          involving the ANMR Companies.  None of the employees of the ANMR
          Companies are covered by any collective bargaining agreement, no
          collective bargaining agreement is currently being negotiated by
          the ANMR Companies and to Advanced NMR's knowledge, no attempt is
          currently being made or during the past three years has been made
          to organize any employees of the ANMR Companies to form or enter
          a labor union or similar organization.

                    4.13  Tax Returns and Audits.  Except as set forth on
                          ----------------------
          Schedule 4.13, Advanced NMR has duly filed all federal, state,
          -------------
          local and foreign tax returns, reports and forms required to be
          filed by it, except where the failure to so file would not have
          an ANMR Material Adverse Effect.  Advanced NMR has duly paid
          (except for Taxes being contested in good faith) or made adequate
          provisions on their books in accordance with GAAP for the payment
          of all Taxes which have been incurred or are due and payable, and
          Advanced NMR will on or before the Effective Time of the Merger
          make adequate provision on its books in accordance with GAAP for
          all Taxes payable for any period through the Effective Time of
          the Merger for which no return is required to be filed prior to
          the Effective Time.  Except as set forth on Schedule 4.13, the
                                                      -------------
          federal and state income tax returns of Advanced NMR have never
          been examined by the Internal Revenue Service or state taxing
          authority, respectively, nor has Advanced NMR granted or given
          any extensions or waivers of the statute of limitations with
          respect to any such federal and state income tax returns. 
          Advanced NMR is not aware of any basis for the assertion of any
          deficiency against Advanced NMR for Taxes, which, if adversely
          determined, would have an ANMR Material Adverse Effect.

                    4.14  Litigation.  (a)  Except as disclosed in Schedule
                          ----------                               --------
          4.14, there are no actions, suits, arbitrations, regulatory
          ----
          proceedings or other litigation, proceedings or governmental
          investigations pending or, to Advanced NMR's knowledge,
          threatened against or affecting any ANMR Company or any of its
          respective officers or directors in their capacity as such, or
          any of its respective properties or businesses which could
          reasonably be expected to have an ANMR Material Adverse Effect. 
          Except as set forth on Schedule 4.14, all of the proceedings
                                 -------------
          pending against any ANMR Company is covered and being defended by
          insurers (subject to such deductibles as are set forth in such
          Schedule).  Except as disclosed in Schedule 4.14, no ANMR Company
                                             -------------
          is subject to any order, judgment, decree, injunction,
          stipulation or consent order of or with any court or other
          Governmental Entity, other than orders of general applicability. 
          Since January 1, 1994, none of the ANMR Companies has entered
          into any agreement to settle or compromise any proceeding pending
          or threatened against it which has involved any obligation other
          than the payment of money or for which it has any continuing
          obligation.

                    (b)  There are no claims, actions, suits, proceedings,
          or investigations pending or, to Advanced NMR's knowledge,
          threatened by or against any of the ANMR Companies with respect
          to this Agreement or the Related Agreement, or in connection with
          the transactions contemplated hereby or thereby.

                    (c)  Except as set forth on Schedule 4.14, there are no
                                                -------------
          pending or, to Advanced NMR's knowledge, threatened claims
          against any director, officer, employee or agent of any ANMR
          Company or any other Person which could give rise to any claim
          for indemnification against any ANMR Company.

                    4.15  Compliance with Applicable Laws.  Except as
                          -------------------------------
          disclosed in Schedule 4.15, each of the ANMR Companies holds all
                       -------------
          permits, licenses, variances, exemptions, orders and approvals of
          all Governmental Entities which are required in the operation of
          its respective business (the "ANMR Permits") except for those the
          failure of which to hold would have an ANMR Material Adverse
          Effect.  The ANMR Companies are in compliance with the terms of
          the ANMR Permits, except where the failure so to comply would not
          have an ANMR Material Adverse Effect.  Except as disclosed in
          Schedule 4.15, to Advanced NMR's knowledge, none of the ANMR
          -------------
          Companies is in violation of any law, ordinance or regulation of
          any Governmental Authority, including environmental laws and
          regulations, except for possible violations which individually
          and in the aggregate do not, and, insofar as reasonably can be
          foreseen by Advanced NMR, will not in the future have an ANMR
          Material Adverse Effect.

                    4.16  Medical Devices.  (a)  Except for the products
                          ---------------
          set forth on Schedule 4.16, Advanced NMR and the Subsidiary sell
                       -------------
          no products for which a premarket approval of, or 510(k)
          notification to, the FDA or other Governmental Authority is
          required, and Advanced NMR and the Subsidiary are not, as to any
          other product, otherwise subject to the jurisdiction of the FDA
          or any similar state, local or foreign Governmental Authority. 
          There are no products sold by Advanced NMR and the Subsidiary for
          which a new or modified pre-market approval or 510(k)
          notification is required and for which such approval has not been
          issued or clearance has not been made by the FDA.

                    (b)  Except as set forth on Schedule 4.16, to Advanced
                                                -------------
          NMR's knowledge, there exists no set of facts:

                    (i)       which could furnish a basis for the
                              withdrawal, suspension or termination of any
                              pre-market product approval or 510(k)
                              approval or the request for a recall or
                              cessation of sales of any product, by the FDA
                              or any other Governmental Entity, with
                              respect to any product sold by Advanced NMR
                              or the Subsidiary;

                    (ii)      which would otherwise be expected to cause
                              Advanced NMR or the Subsidiary to recall any
                              product or to restrict the marketing of any
                              product or to terminate or suspend testing of
                              any product; or

                    (iii)     which would have a material adverse effect on
                              the continued operation of any registered
                              device establishment (or portion thereof) of
                              Advanced NMR or the Subsidiary.

                    4.17  Contracts; No Defaults.  Except as disclosed in
                          ----------------------
          the ANMR SEC Documents, neither any ANMR Company nor to Advanced
          NMR's knowledge any other party thereto, is in breach or
          violation of, or in default in the performance or observance of
          any term or provision of, and no event has occurred or by reason
          of the Merger would occur which, with notice or lapse of time or
          both, could be reasonably expected to result in a default under,
          any contract, agreement or commitment to which any ANMR Company
          is a party or by which any ANMR Company or any of its assets or
          properties is bound, except for breaches, violations and defaults
          which are not having and could not be reasonably expected to have
          an ANMR Material Adverse Effect.  Except as described in Schedule
                                                                   --------
          4.17, none of the ANMR Companies is required to give any notice
          ----
          to any person regarding this Agreement or the Related Agreement
          or the transactions contemplated hereby or thereby.

                    4.18  Fees of Brokers, Finders and Investment Bankers.
                          -----------------------------------------------
          Neither Advanced NMR nor any officer, director, or employee of
          Advanced NMR has employed any brokers, finder or investment
          banker (except for Leeds Group Inc.) or incurred any liability
          for any brokerage or investment banking fees, commissions or
          finders' fees in connection with the transactions contemplated by
          this Agreement.

                    4.19  Absence of Certain Changes or Events.  Except as
                          ------------------------------------
          disclosed in the Advanced NMR SEC Documents filed prior to the
          date of this Agreement or in Schedule 4.19 hereto, since
                                       -------------
          September 30, 1995, Advanced NMR has not (i) declared, set aside
          or paid any dividend or other distribution in respect of its
          capital stock; (ii) made any direct or indirect redemption,
          purchase or other acquisition of any shares (other than purchases
          in connection with the exercise of options) of its capital stock
          or made any payment (other than dividends) to any of their
          stockholders (in their capacity as stockholders); (iii) issued or
          sold any shares of its capital stock or any options, warrants or
          other rights to purchase any such shares or any securities
          convertible into or exchangeable for such shares or taken any
          action to reclassify or recapitalize or split up their capital
          stock; (iv) mortgaged, pledged or subjected to any lien, lease,
          security interest, encumbrance or other restriction, any of their
          material properties or assets except in the ordinary and usual
          course of their business and consistent with past practice; (v)
          except in the ordinary and usual course of its business and
          consistent with its past practices forgiven or canceled any
          material debt or claim, waived any material right; or (vi)
          adopted or amended any plan or arrangement (other than amendments
          that are not material or that were made to comply with laws or
          regulations) for the benefit of any director, officer or employee
          or changed the compensation (including bonuses) to be paid to any
          director, officer or employee, except for changes made consistent
          with the prior practice of Advanced NMR.


                                      ARTICLE V

                                      COVENANTS

                    5.1  Implementing Agreement.  Subject to the terms and
                         ----------------------
          conditions hereof, each party hereto shall use its best efforts
          to take all action required of it to fulfill its obligations
          under the terms of this Agreement and to facilitate the
          consummation of the transactions contemplated hereby.

                    5.2  Access to Information and Facilities.  From and
                         ------------------------------------
          after the date of this Agreement, AMS shall give Advanced NMR and
          Acquisition Corp. and their representatives access during normal
          business hours and upon reasonable notice to all of the
          facilities, properties, books, contracts, commitments and records
          of AMS and shall make the officers and employees of AMS available
          to Advanced NMR and Acquisition Corp. and their representatives
          as Advanced NMR or Acquisition Corp. or their representatives
          shall from time to time reasonably request.  Advanced NMR and
          Acquisition Corp. and their representatives will be furnished
          with any and all information concerning AMS which Advanced NMR or
          Acquisition Corp. or their representatives reasonably request. 
          The obligations set forth in this Section 5.2 shall also apply to
                                            -----------
          Advanced NMR and Acquisition Corp., mutatis mutandis.
                                              ------- --------

                    5.3  Preservation of Business.  From the date of this
                         ------------------------
          Agreement until the Closing Date, each of AMS and Advanced NMR
          shall operate only in the ordinary and usual course of business
          consistent with past practice, and shall use reasonable
          commercial efforts to (a) preserve intact its respective business
          organization, (b) preserve the good will and advantageous
          relationships with customers, suppliers, independent contractors,
          employees and other Persons material to the operation of its
          business, and (c) not permit any action or omission which would
          cause any of the representations or warranties contained herein
          to become inaccurate or any of the covenants to be breached in
          any material respect.

                    5.4  Proxy Materials and AMS Stockholder Approval.  (a)
                         --------------------------------------------
          As soon as practicable after the date hereof, Advanced NMR and
          AMS will prepare and file the Proxy Statement/Prospectus that
          will be included in the Registration Statement containing (i) the
          Proxy Statement relating to the AMS Stockholders' Meeting at
          which this Agreement and the Merger will be voted upon and (ii) a
          prospectus relating to the shares of Advanced NMR Common Stock to
          be issued by Advanced NMR in connection with the Merger, and each
          of Advanced NMR and AMS shall use all reasonable efforts to have
          the Registration Statement declared effective as promptly as
          practicable.  AMS will convene the AMS Stockholders' Meeting as
          promptly as practicable after the Registration Statement is
          declared effective to consider and vote upon the approval of this
          Agreement and the Merger.  Subject to fiduciary obligations of
          the AMS Board of Directors or the members of the Special
          Committee under applicable law as determined by such AMS Board
          members or Special Committee members in good faith after
          consultation with legal counsel, the board of directors of AMS
          shall recommend such approval to its stockholders and use its
          best efforts to obtain such approval.

                    (b)  The information supplied by AMS for inclusion in
          the Proxy Statement/Prospectus shall not, at the time the Proxy
          Statement/Prospectus is declared effective, contain any untrue
          statement of a material fact or omit to state any material fact
          required to be stated therein or necessary in order to make the
          statements therein not misleading.  The information supplied by
          AMS for inclusion in the Proxy Statement/Prospectus to be sent to
          the stockholders of AMS in connection with the AMS Stockholders'
          Meeting shall not, at the date the Proxy Statement/Prospectus (or
          any amendment thereof or supplement thereto) is first mailed to
          stockholders, at the time of the AMS Stockholders' Meeting or at
          the Effective Time, contain any untrue statement of a material
          fact or omit to state any material fact required to be stated
          therein or necessary in order to make the statements therein, in
          the light of the circumstances under which they are made, not
          misleading.  If at any time prior to the Effective Time any event
          or circumstance relating to AMS, or its officers or directors,
          should be discovered by AMS which should be set forth in an
          amendment to the Proxy Statement/Prospectus, AMS shall promptly
          inform Advanced NMR.  All documents that AMS is responsible for
          filing with the Commission in connection with the transactions
          contemplated herein will comply as to form and substance in all
          material respects with the applicable requirements of the 1933
          Act and the rules and regulations thereunder, and the 1934 Act
          and the rules and regulations thereunder.

                    (c)  The information supplied by Advanced NMR and
          Acquisition Corp. for inclusion in the Proxy Statement/Prospectus
          shall not, at the time the Proxy Statement/Prospectus is declared
          effective, contain any untrue statement of a material fact or
          omit to state any material fact required to be stated therein or
          necessary in order to make the statements therein not misleading. 
          The information supplied by Advanced NMR and Acquisition Corp.
          for inclusion in the Proxy Statement/Prospectus to be sent to AMS
          stockholders in connection with the AMS Stockholders' Meeting
          shall not at the date the Proxy Statement/Prospectus (or any
          amendment thereof or supplement thereto) is first mailed to AMS
          stockholders, at the time of the AMS Stockholders' Meeting or at
          the Effective Time, contain any untrue statement of a material
          fact or omit to state any material fact required to be stated
          therein or necessary in order to make the statements therein, in
          light of the circumstances under which they are made, not
          misleading.  If at any time prior to the Effective Time any event
          or circumstance relating to Advanced NMR or Acquisition Corp., or
          to their respective officers or directors, should be discovered
          by Advanced NMR which should be set forth in an amendment to the
          Proxy Statement/Prospectus or a supplement thereto, Advanced NMR
          shall promptly inform AMS.  All documents that Advanced NMR is
          responsible for filing with the Commission in connection with the
          transactions contemplated herein will comply as to form and
          substance in all material respects with the applicable
          requirements of the 1933 Act and the rules and regulations
          thereunder and the 1934 Act and the rules and regulations
          thereunder.

                    5.5  Consents and Approvals.  Subject to the terms and
                         ----------------------
          conditions provided herein, each of the parties hereto shall use
          reasonable commercial efforts to obtain all consents, approvals,
          certificates and other documents required in connection with the
          performance by it of this Agreement and the consummation of the
          transactions contemplated hereby.  As soon as practicable after
          the date hereof, each of the parties hereto shall make all
          filings, applications, statements and reports to all Governmental
          Authorities and other Persons which are required to be made prior
          to the Closing Date pursuant to any applicable law or contract in
          connection with this Agreement and the transactions contemplated
          hereby.

                    5.6  Periodic Reports.  Until the Effective Time,
                         ----------------
          Advanced NMR and AMS each will, subject to the requirements of
          applicable laws, furnish to the other all filings to be made with
          the Commission and will solicit comments with respect thereto
          from the other, in each case at least 48 hours (or as soon
          thereafter as is practicable) prior to the time of such filings
          and the time of such mailings.

                    5.7  Publicity.  Prior to issuing any public
                         ---------
          announcement or statement with respect to the transactions
          contemplated hereby and prior to making any filing with any
          Federal or state governmental or regulatory agency or with any
          securities exchange with respect thereto, Advanced NMR and AMS
          will, subject to their respective legal obligations, consult with
          each other and will allow each other to review the contents of
          any such public announcement or statement and any such filing. 
          Subject to the preceding sentence, Advanced NMR and AMS each
          agree to furnish to the other copies of all other public
          announcements they may make concerning their respective business
          and operations promptly after such public announcements are made.

                    5.8  Listing of Common Stock.  Advanced NMR will cause
                         -----------------------
          to be prepared and submitted to NASDAQ an application covering
          the listing of the shares of Advanced NMR Common Stock on NASDAQ
          issuable in connection with the Merger and will use its
          reasonable best efforts to obtain, prior to the Closing, approval
          for the listing of such shares.

                    5.9  Blue Sky Approvals.  Advanced NMR and AMS will
                         ------------------
          obtain, prior to the effective date of the Registration
          Statement, all necessary state securities law or "Blue Sky"
          permits and approvals required to carry out the transactions
          contemplated by this Agreement and the Merger.

                    5.10  Rule 145 Affiliates.  Prior to the Closing Date,
                          -------------------
          AMS shall deliver to Advanced NMR a letter representing that
          other than Advanced NMR, and to its best knowledge AMS has no
          "affiliates" for purposes of Rule 145 under the 1933 Act.


                                      ARTICLE VI

                         CONDITIONS PRECEDENT TO OBLIGATIONS
                        OF ACQUISITION CORP. AND ADVANCED NMR

                    The obligations of Acquisition Corp. and Advanced NMR
          to consummate the Merger are subject to the fulfillment at or
          before the Closing of each of the following conditions:

                    6.1  Warranties True as of Closing Date.  The
                         ----------------------------------
          representations and warranties of AMS contained herein shall be
          true and correct in all material respects on and as of the
          Closing Date with the same force and effect as though made on and
          as of the Closing Date.

                    6.2  Compliance With Agreements and Covenants.  AMS
                         ----------------------------------------
          shall have performed and complied with in all material respects
          all of its covenants, obligations and agreements contained in
          this Agreement to be performed and complied with by AMS on or
          prior to the Closing Date.

                    6.3  Consents and Approvals.  Advanced NMR shall have
                         ----------------------
          received written evidence satisfactory to it that all consents
          and approvals required for the consummation of the transactions
          contemplated hereby have been obtained, and all required filings
          have been made, except where the failure to obtain any such
          consent or approval or to make any such filing would not have an
          AMS Material Adverse Effect or an ANMR Material Adverse Effect.

                    6.4  Actions or Proceedings.  No preliminary or
                         ----------------------
          permanent injunction or other order by any federal or state court
          preventing consummation of the Merger shall have been issued and
          shall be continuing in effect, and the Merger and the other
          transactions contemplated hereby shall not be prohibited under
          any applicable federal or state law or regulation.

                    6.5  Approval of Merger.  The stockholders of AMS shall
                         ------------------
          have approved this Agreement and the Merger contemplated hereby
          in accordance with its certificate of incorporation and by-laws
          and the DGCL.

                    6.6  Consent of Chemical Bank.  Advanced NMR shall have
                         ------------------------
          obtained the written consent of Chemical Bank to the Merger.

                    6.7  Registration Statement.  The Registration
                         ----------------------
          Statement shall have become effective, and no stop order
          suspending the effectiveness of the Registration Statement shall
          have been issued and remain in effect.

                    6.8  Listing of Common Stock.  NASDAQ shall have
                         -----------------------
          approved the listing of all shares of Advanced NMR Common Stock
          to be issued in the Merger.

                    6.9  Other Closing Documents.  Advanced NMR shall have
                         -----------------------
          received the executed Certificate of Merger and such other
          agreements and instruments as Advanced NMR shall reasonably
          request, in each case in form and substance reasonably
          satisfactory to Advanced NMR.


                                     ARTICLE VII

                      CONDITIONS PRECEDENT TO OBLIGATIONS OF AMS

                    The obligations of AMS to consummate the Merger are
          subject to the satisfaction or waiver by AMS of the following
          conditions precedent on or before the Closing Date:

                    7.1  Warranties True as of Closing Date.  The
                         ----------------------------------
          representations and warranties of Acquisition Corp. and Advanced
          NMR contained herein shall be true and correct in all material
          respects on and as of the Closing Date with the same force and
          effect as though made by Acquisition Corp. and Advanced NMR on
          and as of the Closing Date.

                    7.2  Compliance with Agreements and Covenants.
                         ----------------------------------------
          Acquisition Corp. and Advanced NMR shall have performed and
          complied with in all material respects all of their covenants,
          obligations and agreements contained in this Agreement, to be
          performed and complied with by them on or prior to the Closing
          Date.

                    7.3  Consents and Approvals.  AMS shall have received
                         ----------------------
          written evidence satisfactory to it that all consents and
          approvals required for the consummation of the transactions
          contemplated hereby have been obtained, and all required filings
          have been made, except where the failure to obtain any such
          consent or approval or to make any such filing would not have an
          AMS Material Adverse Effect or an ANMR Material Adverse Effect.

                    7.4  Actions or Proceedings.  No preliminary or
                         ----------------------
          permanent injunction or other order by any federal or state court
          preventing consummation of the Merger shall have been issued and
          shall be continuing in effect, and the Merger and the other
          transactions contemplated hereby shall not be prohibited under
          any applicable federal or state law or regulation.

                    7.5  Approval of Merger.  The stockholders of AMS shall
                         ------------------
          have approved this Agreement and the Merger contemplated hereby
          in accordance with its certificate of incorporation and by-laws
          and the DGCL.

                    7.6  Registration Statement.  The Registration
                         ----------------------
          Statement shall have become effective, and no stop order
          suspending the effectiveness of the Registration Statement shall
          have been issued and remain in effect.

                    7.7  Listing of Common Stock.  NASDAQ shall have
                         -----------------------
          approved the listing of all shares of Advanced NMR Common Stock
          to be issued in the Merger.

                    7.8  Other Closing Documents.  AMS shall have received
                         -----------------------
          such other agreements and instruments as AMS shall reasonably
          request, in each case in form and substance reasonably
          satisfactory to AMS.

                    7.9  Consent of Chemical Bank.  Advanced NMR shall have
                         ------------------------
          received the written consent of Chemical Bank to the Merger. 

                    7.10  Fairness Opinion.  Delivery to AMS of Houlihan
                          ----------------
          Lokey's fairness opinion as provided in Section 3.17 of this
          Agreement.

                    7.11  Board Appointment.  The Advanced NMR Board shall
                          -----------------
          recommend the appointment of one member of the Special Committee
          to serve on the Advanced NMR Board subsequent to the Merger.


                                     ARTICLE VIII

                           TERMINATION AND INDEMNIFICATION

                    8.1  Termination.  This Agreement may be terminated and
                         -----------
          the Merger may be abandoned at any time prior to the Effective
          Time, whether before or after approval by the stockholders of
          AMS:

                    (a)  by mutual written consent of the Board of
          Directors of Advanced NMR and the Board of Directors of AMS;

                    (b)  by either Advanced NMR or AMS, by written notice
          to the other, if (i) the Effective Time shall not have occurred
          on or before October 1, 1996, (ii) the requisite vote of the
          stockholders of AMS to approve this Agreement shall not be
          obtained at the AMS Stockholders' Meeting, or any adjournments or
          postponements thereof, called therefor, (iii) a bona fide
          acquisition proposal is made by a third party to acquire all or
          substantially all of the outstanding shares of AMS Common Stock
          or a similar acquisition proposal for AMS or its assets is made
          which in either case the Board of Directors of AMS determines in
          good faith is more favorable to the AMS stockholders from a
          financial point of view than the Merger; or (iv) any court of
          competent jurisdiction in the United States or any state shall
          have issued an order, judgment or decree (other than a temporary
          restraining order) restraining, enjoining or otherwise
          prohibiting the Merger and such order, judgment or decree shall
          have become final and non-appealable; provided, however, that the
          right to terminate this Agreement (x) under clause (i) shall not
          be available to any party whose failure to fulfill any obligation
          under this Agreement has been the cause of, or resulted in, the
          failure of the Effective Time to occur on or before such date or
          (y) under clause (iv) shall not be available to any party unless
          such party shall have used all reasonable efforts to remove such
          order, judgment or decree;

                    (c)  by Advanced NMR, by written notice to AMS, if:

                         (i)  there shall have been any breach of any
                    representation, warranty, covenant or agreement of AMS
                    hereunder which, if not remedied prior to the Closing
                    Date, would have an AMS Material Adverse Effect and
                    such breach shall not have been remedied, or AMS shall
                    not have provided Advanced NMR with reasonable
                    assurance that such breach will be remedied prior to
                    the Closing Date, within ten days after receipt by AMS
                    of notice in writing from Advanced NMR, specifying the
                    nature of such breach and requesting that it be
                    remedied; or

                         (ii)  the Special Committee of the Board of
                    Directors and/or the Board of Directors of AMS shall
                    withdraw or modify in any manner adverse to Advanced
                    NMR its approval or recommendation of this Agreement or
                    the Merger.

                    (d)  by AMS, by written notice to Advanced NMR, if:

                         (i)  there shall have been any breach of any
                    representation, warranty, covenant or agreement of
                    Advanced NMR hereunder which, if not remedied prior to
                    the Closing Date, would have an ANMR Material Adverse
                    Effect and such breach shall not have been remedied or
                    Advanced NMR shall not have provided AMS with
                    reasonable assurance that such breach will be remedied
                    prior to the Closing Date, within ten days after
                    receipt by Advanced NMR of notice in writing from AMS,
                    specifying the nature of such breach and requesting
                    that it be remedied; or

                         (ii)  the Board of Directors of Advanced NMR or
                    any committee thereof shall withdraw or modify in any
                    manner adverse to AMS its approval or recommendation of
                    this Agreement or the Merger.

                    8.2  Effect of Termination and Abandonment.  In the
                         -------------------------------------
          event of termination of this Agreement and abandonment of the
          Merger pursuant to this Article VIII, no party hereto (or any of
                                  ------------
          its directors or officers) shall have any liability or further
          obligation to any other party to this Agreement, except that
          nothing herein will relieve any party from liability for any
          willful breach of this Agreement.

                    8.3  Indemnification by Advanced NMR.
                         -------------------------------

                    (a)  For a period of six years after the Effective
          Time, Advanced NMR shall indemnify, defend and hold harmless the
          present and former officers, directors and employees of AMS (the
          "Indemnified Parties") against all losses, claims, damages,
          costs, expenses, obligations, liabilities or judgments, or
          amounts that are paid in settlement with the approval of Advanced
          NMR (which approval shall not be unreasonably withheld) resulting
          from or arising out of actions or omissions occurring on or prior
          to the Effective Time (including, without limitation, the
          transactions contemplated by this Agreement) to the full extent
          permitted or required under applicable law and under the
          provisions of the Certificate of Incorporation and the By-Laws of
          AMS, each as in effect at the date hereof (which provisions shall
          not be amended in any manner which adversely affects any
          Indemnified Party, for a period of six years) including
          provisions relating to advances of expenses incurred in defense
          of any action or suit (the "Indemnified Liabilities") (and
          Advanced NMR will pay expenses in advance of the final
          disposition of any such action or proceeding to each Indemnified
          Party to the full extent permitted by law), except for a claim
          arising or based upon the gross negligence or willful misconduct
          of the Indemnified Party.  Without limiting the foregoing, in the
          event any such claim, action, suit, proceeding or investigation
          is brought against any Indemnified Party (whether initiated,
          asserted, or arising before or within six years after the
          Effective Time), (i) the Indemnified Party may retain counsel
          satisfactory to it and Advanced NMR, (ii) Advanced NMR will pay
          all reasonable fees and expenses of such counsel for the
          Indemnified Party promptly as statements therefor are received,
          (iii) the Indemnified Party may participate in any such defense
          at such Indemnified Party's expense, (iv) Advanced NMR will use
          all reasonable efforts to assist in the vigorous defense of any
          such matter and all rights to indemnification shall continue
          until final disposition of such claim, provided that Advanced NMR
          shall not be liable for any settlement of any claim effected
          without its prior written consent, which consent shall not be
          unreasonably withheld, and (v) Advanced NMR shall not, in the
          defense of any such claim or litigation, except with the consent
          of the Indemnified Party, consent to the entry of any judgment or
          enter into any settlement that provides for injunction or other
          non-monetary relief effecting the Indemnified Party or that does
          not include as an unconditional term thereof the giving by the
          claimant or plaintiff to such Indemnified Party of a release from
          all liability with respect to such claim or litigation.  If more
          than one Indemnified Party is subject to a claim giving rise to
          indemnification hereunder, the Indemnified Parties as a group may
          retain one law firm to represent them with respect to each such
          matter unless there is, under applicable standards of
          professional conduct (as determined by counsel to the Indemnified
          Parties), a conflict on any significant issue between the
          positions of any two or more Indemnified Parties in which event,
          such additional counsel as may be required may be retained by the
          Indemnified Parties.  Any Indemnified Party wishing to claim
          indemnification under this Section 8.3, upon learning of any such
          claim, action, suit, proceeding or investigation, shall notify
          Advanced NMR in writing (but the failure so to notify an
          indemnifying party shall not relieve it from any obligation or
          liability which it may have under this Section 8.3, except to the
          extent such failure prejudices such party), and shall, to the
          extent required by laws of the indemnifying party's state of
          incorporation, deliver to Advanced NMR any undertaking required
          prior to payment of expenses in advance of final disposition.

                    (b)  In the event that Advanced NMR or any of its 
          successors or assigns (i) consolidates with or merges into any
          other person and shall not be the continuing or surviving
          corporation or entity of such consolidation or merger, or (ii)
          transfers all or substantially all of its properties and assets
          to any person, then and in each such case, proper provisions
          shall be made so that the successors and assigns of Advanced NMR
          shall assume the obligations set forth in paragraph (a) above.

                    (c)  For six years after the Effective Time, Advanced
          NMR shall cause to be maintained its current policies
          ("Policies") of directors' and officers' liability insurance
          (provided that Advanced NMR may substitute therefor policies
          having at least comparable coverage containing terms that are no
          less advantageous) with respect to matters occurring prior to the
          Effective Time to the extent such liability insurance can be
          maintained at a cost at no greater than one and one-half times
          the current amount paid by Advanced NMR annually for its existing
          coverage) (the "Cap"); provided that if comparable coverage
          cannot be obtained, or can be obtained only by paying an annual
          premium in excess of the Cap, Advanced NMR shall only be required
          to obtain as much coverage as can be obtained by paying an annual
          premium equal to the Cap.  In the event that the Policies do not
          provide insurance coverage (at least in an amount up to the
          current coverage limits) for the directors and officers of AMS
          for claims that might be brought in connection with the Merger,
          Advanced NMR agrees, consistent with the provisions of this
          Section 8.3(c), to use its best commercially reasonable and
          practicable efforts to obtain such insurance policy or policies
          covering the officers and directors of AMS having at least
          comparable coverage and terms as the Policies.

                    (d)  Advanced NMR shall pay all expenses, including
          reasonable attorneys' fees, that may be incurred by any
          Indemnified Party in enforcing the indemnity and other
          obligations provided for in this Section 8.3.

                    (e)  This Section 8.3 is intended for the benefit of
          and to grant third party rights to the Indemnified Parties and
          each of the Indemnified Parties is entitled to enforce the rights
          contained herein.


                                      ARTICLE IX

                                    MISCELLANEOUS

                    9.1  Expenses.  Each party hereto shall bear its own
                         --------
          expenses with respect to the transactions contemplated hereby.

                    9.2  Amendment.  This Agreement may be amended,
                         ---------
          modified or supplemented but only in writing signed by
          Acquisition Corp., Advanced NMR and AMS.

                    9.3  Non-Survival of Representations, Warranties,
                         --------------------------------------------
          Covenants and Agreements.  All representations, warranties,
          ------------------------
          covenants and agreements contained in this Agreement or in any
          instrument delivered in connection herewith shall not survive the
          Merger, except as otherwise specifically provided in this
          Agreement and except for the agreements contained in this Section
                                                                    -------
          9.3 and in Articles I and IX and in Section 8.3.
          ---        ----------     --

                    9.4  Notices.  Any notice, request, instruction or
                         -------
          other document to be given hereunder by a party hereto shall be
          in writing and shall be deemed to have been given, (a) when
          received if given in person, (b) on the date of transmission if
          sent by telex, facsimile or other wire transmission or (c) three
          Business Days after being deposited in the U.S. mail, certified
          or registered mail, postage prepaid:

                    (a)  If to AMS:

                              Advanced Mammography Systems, Inc.
                              46 Jonspin Road
                              Wilmington, Massachusetts 01187
                              Attention:  Gary A. Kittrell, Director
                              Facsimile No.:  (212) 732-1058

                              with a copy to:

                              Kittrell & Kittrell, P.C.
                              Six Maiden Lane
                              New York, New York 10038
                              Attention:  Gary A. Kittrell, Esq.

                    (b)  If to Advanced NMR or Acquisition Corp.:

                              Advanced NMR Systems, Inc.
                              46 Jonspin Road
                              Wilmington, Massachusetts  01887
                              Attention:  Jack Nelson
                                          Chairman of the Board
                              Facsimile No.:  (508) 658-8876

                              with a copy to:

                              Reid & Priest LLP
                              40 West 57th Street
                              New York, NY  10019
                              Attention:  Bruce A. Rich, Esq.
                              Facsimile No.:  (212) 603-2001

          or to such other individual or address as a party hereto may
          designate for itself by notice given as herein provided.

                    9.5  Waivers.  The failure of a party hereto at any
                         -------
          time or times to require performance of any provision hereof
          shall in no manner affect its right at a later time to enforce
          the same.  No waiver by a party of any condition or of any breach
          of any term, covenant, representation or warranty contained in
          this Agreement shall be effective unless in writing, and no
          waiver in any one or more instances shall be deemed to be a
          further or continuing waiver of any such condition or breach in
          other instances or a waiver of any other condition or breach of
          any other term, covenant, representation or warranty.

                    9.6  Interpretation.  The headings preceding the text
                         --------------
          of Articles and Sections included in this Agreement and the
          headings to Schedules attached to this Agreement are for
          convenience only and shall not be deemed part of this Agreement
          or be given any effect in interpreting this Agreement.  The use
          of the masculine, feminine or neuter gender herein shall not
          limit any provision of this Agreement.  The use of the terms
          "including" or "include" shall in all cases herein mean
          "including, without limitation" or "include, without limitation,"
          respectively.  Underscored references to Articles, Sections,
          Paragraphs, Subsections, Subparagraphs, Schedules or Exhibits
          shall refer to those portions of this Agreement.

                    9.7  Applicable Law.  This Agreement shall be governed
                         --------------
          by and construed and enforced in accordance with the internal
          laws of the State of Delaware without giving effect to the
          principles of conflicts of law thereof.

                    9.8  Assignment.  This Agreement shall be binding upon
                         ----------
          and inure to the benefit of the parties hereto and their
          respective successors and assigns; provided, however, that no
          assignment of any rights or obligations shall be made by any
          party without the prior written consent of all the other parties
          hereto.

                    9.9  No Third Party Beneficiaries.  This Agreement is
                         ----------------------------
          solely for the benefit of the parties hereto and, to the extent
          provided herein, and their respective directors, officers,
          employees, agents and representatives, and no provision of this
          Agreement shall be deemed to confer upon other third parties any
          remedy, claim, liability, reimbursement, cause of action or other
          right.

                    9.10  Enforcement of the Agreement.  The parties hereto
                          ----------------------------
          agree that irreparable damage would result in the event that any
          provision of this Agreement is not performed in accordance with
          specific terms or is otherwise breached.  It is accordingly
          agreed that the parties hereto will be entitled to equitable
          relief including an injunction or injunctions to prevent breaches
          of this Agreement and to enforce specifically the terms and
          provisions hereof.

                    9.11  Further Assurances.  Upon the request of Advanced
                          ------------------
          NMR or Acquisition Corp., AMS will on and after the Closing Date
          execute and deliver to Acquisition Corp. such other documents,
          releases, assignments and other instruments as may be required to
          effectuate completely the transactions contemplated by this
          Agreement.

                    9.12  Severability.  If any provision of this Agreement
                          ------------
          shall be held invalid, illegal or unenforceable, the validity,
          legality or enforceability of the other provisions hereof shall
          not be affected thereby, and there shall be deemed substituted
          for the provision at issue a valid, legal and enforceable
          provision as similar as possible to the provision at issue.

                    9.13  Remedies Cumulative.  The remedies provided in
                          -------------------
          this Agreement shall be cumulative and shall not preclude the
          assertion or exercise of any other rights or remedies available
          by law, in equity or otherwise.

                    9.14  Entire Understanding.  This Agreement and the
                          --------------------
          Related Agreements set forth the entire agreement and
          understanding of the parties hereto and supersede all prior
          agreements, arrangements and understandings among the parties
          hereto.

                    9.15  Waiver of Jury Trial.   Each party hereto waives
                          --------------------
          the right to a trial by jury in any dispute in connection with
          the transactions contemplated by this Agreement and the Related
          Agreements, and agrees to take any and all action necessary or
          appropriate to effect such waiver.

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


                        [Signature Page Appears On Next Page]


          <PAGE>

                    IN WITNESS WHEREOF, the parties hereto have caused this
          Agreement to be executed and delivered on the date first above
          written.

                                           ADVANCED NMR SYSTEMS, INC.


                                           By:  /s/ Jack Nelson
                                               ---------------------------
                                               Name:  Jack Nelson
                                               Title:  Chairman

                                           AMS MERGER CORPORATION


                                           By:  /s/ Jack Nelson
                                               ---------------------------
                                               Name:  Jack Nelson
                                               Title:  President

                                           ADVANCED MAMMOGRAPHY SYSTEMS, INC.


                                           By:  /s/ Enrique Levy
                                               ---------------------------
                                               Name:  Enrique Levy
                                               Title:  President

     <PAGE>

     NOTE TO THE COMMISSION REGARDING THE FILING OF SCHEDULES TO THE
     AGREEMENT AND PLAN OF MERGER, AS OF FEBRUARY 4, 1996, AMONG
     ADVANCED NMR SYSTEMS, INC., AMS MERGER CORPORATION AND ADVANCED
     MAMMOGRAPHY SYSTEMS, INC.:

     The registrant has omitted from this filing the schedules to 
     the above-referenced agreement, which are listed on page (iv)
     thereof.  These schedules do not contain information that is
     material to an investment decision.  The registrant will provide
     the omitted schedules to the Commission on request.




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