ADVANCED NMR SYSTEMS INC
SC 13D/A, 1997-07-03
ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS
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                                    UNITED STATES
                          SECURITIES AND EXCHANGE COMMISSION
                                WASHINGTON D.C.  20549

                                     SCHEDULE 13D

                      Under the Securities Exchange Act of 1934
                                  (Amendment No. 6)

                          ADVANCED MAMMOGRAPHY SYSTEMS, INC.
                         ------------------------------------
                                   (Name of Issuer)

                            COMMON STOCK, $0.01 PAR VALUE
                           -------------------------------
                            (Title of Class of Securities)


                                      00753Q-101
                                ----------------------
                                    (CUSIP Number)

                                Jack Nelson, Chairman
                              Advanced NMR Systems, Inc.
                                   46 Jonspin Road
                              Wilmington, MA 01887-1082
                                   (508) 657 - 8876
                    ---------------------------------------------
             (Name, Address and Telephone Number of Person Authorized to
                         Receive Notices and Communications)

                                    June 23, 1997
                                ----------------------
               (Date of Event which Requires Filing of this Statement)

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

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

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

                    
          <PAGE>


                                     SCHEDULE 13D

          ---------------------                   ----------------------
          CUSIP No.  00753Q-101                   PAGE  2  OF  40  PAGES
                    -----------                        ---    ----
          ---------------------                   ----------------------

          -----------------------------------------------------------------
          1    NAME OF REPORTING PERSON
               S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                    Advanced NMR Systems, Inc.
                    EIN: 22-2457487 
          -----------------------------------------------------------------
          2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP* (a) [ ]
                                                                 (b) [ ]
          -----------------------------------------------------------------
          3    SEC USE ONLY

          -----------------------------------------------------------------
          4    SOURCE OF FUNDS*

                    OO
          -----------------------------------------------------------------
          5    CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED
               PURSUANT TO ITEMS 2(d) or 2(E)                         [ ]
          -----------------------------------------------------------------
          6    CITIZENSHIP OR PLACE OF ORGANIZATION

                    Delaware
          -----------------------------------------------------------------
          NUMBER OF      7    SOLE VOTING POWER
          SHARES                 1,250,000
          BENEFICIALLY   --------------------------------------------------
          OWNED BY       8    SHARED VOTING POWER
          EACH                   -0-
          REPORTING      --------------------------------------------------
          PERSON WITH    9    SOLE DISPOSITIVE POWER
                                 -0- (See Item 5)
                         --------------------------------------------------
                         10   SHARED DISPOSITIVE POWER
                                 -0-
          -----------------------------------------------------------------
          11   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                    1,250,000
          -----------------------------------------------------------------
          12   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
               CERTAIN SHARES*                                        [ ]
          -----------------------------------------------------------------
          13   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

                    16.4%
          -----------------------------------------------------------------
          14   TYPE OF REPORTING PERSON*

                    CO
          -----------------------------------------------------------------

                        *SEE INSTRUCTIONS BEFORE FILLING OUT!


          <PAGE>


               Pursuant to Rule 13d-2 of the General Rules and Regulations
          under the Act, this Amendment No. 6 amends the Schedule 13D filed
          with the Commission on September 19, 1995 (the "Statement") with
          respect to the common stock, $.01 par value per share, of
          Advanced Mammography Systems, Inc. (the "AMS Common Stock"), as
          amended by Amendment No. 1 to the Statement filed with the
          Commission on February 21, 1996, Amendment No. 2 to the Statement
          filed with the Commission on June 12, 1996, Amendments No. 3 and
          No. 4 to the Statement, dated May 16, 1997, and Amendment No. 5,
          dated May 27, 1997.  Terms used and not otherwise defined herein
          shall have the respective meanings set forth in the Statement. 
          Except as otherwise expressly indicated below, the information to
          be provided in the Statement and as amended remains in effect.


          ITEM 4.  PURPOSE OF TRANSACTION
                   ----------------------

               On June 23, 1997, Advanced NMR and its newly formed, wholly-
          owned subsidiary, ANMR/AMS Merger Corp. ("Acquisition Corp."),
          entered into an Agreement and Plan of Merger (the "Merger
          Agreement") with AMS.  The Merger Agreement provides for the
          merger (the "Merger") of Acquisition Corp. with and into AMS,
          with AMS as the surviving corporation of the Merger and therefor
          a wholly-owned subsidiary of Advanced NMR.  A copy of the Merger
          Agreement is incorporated herein as Exhibit 2 hereto.  The
          description of the transaction provided herein is qualified in
          its entirety by reference to the Merger Agreement.

               Upon effectiveness of the Merger, each share of AMS Common
          Stock (except for the shares owned by Advanced NMR) shall be
          converted into the right to receive four-tenths (.40) of one
          fully paid and nonassessable share of Advanced NMR Common Stock. 
          The Merger Agreement provides that Advanced NMR will assume the
          outstanding AMS options, warrants and debentures and is obligated
          to issue shares of ANMR Common Stock in substitution for shares
          of AMS Common Stock, as adjusted pursuant to the respective anti-
          dilution provisions.  

               The Merger will close upon approval by holders of at least a
          majority of outstanding AMS Common Stock and approval by       
          stockholders of Advanced NMR Common Stock of certain proposals
          necessary to effect the Merger, at meetings to be called after
          SEC review of proxy material and a registration statement, and
          fulfillment of other closing conditions. 

               Items (g),(h),(i) of Item 4 shall be amended as follows to
          describe results occurring upon effectiveness of the Merger:

               (g) the Certificate of Incorporation of AMS shall be amended
          to change the authorized capital stock of AMS to 1,000 shares of
          common stock, $.01 par value per share.

               (h) AMS Common Stock shall cease to be quoted on the Nasdaq
          Small Cap System or any other inter-dealer quotation system of a
          registered national securities association.

               (i) AMS Common Stock shall be deregistered under the Act
          pursuant to Section 12(g)(4) of the Act.

                                      -3-

     <PAGE>


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

                    See Item 4.


          ITEM 7.  MATERIAL TO BE FILED AS EXHIBITS:
                   --------------------------------

               (5)  Agreement and Plan of Merger, dated as of
                    June 23, 1997, among Advanced NMR Systems,
                    Inc., ANMR/AMS Merger Corporation and
                    Advanced Mammography Systems, Inc. 


                                      -4-

          <PAGE>


                                      SIGNATURE
                                      ---------

               After reasonable inquiry and to the best of my knowledge and
          belief, I certify that the information set forth in the statement
          is true, complete and correct.


                                        ADVANCED NMR SYSTEMS, INC.


          Date:  July 1, 1997           By:   /s/ Jack Nelson
                                           ---------------------------
                                             Jack Nelson, Chairman



                                      -5-
     <PAGE>

                               EXHIBIT INDEX

      Exhibit           Description
      -------           -----------

        (5)         Agreement and Plan of Merger, dated as of
                    June 23, 1997, among Advanced NMR Systems,
                    Inc., ANMR/AMS Merger Corporation and
                    Advanced Mammography Systems, Inc. 





                             AGREEMENT AND PLAN OF MERGER


                    AGREEMENT AND PLAN OF MERGER dated June 23, 1997, by
          and among ADVANCED NMR SYSTEMS, INC., a Delaware corporation
          ("Advanced NMR"), ANMR/AMS MERGER CORP., 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 1,250,000 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 of independent directors
          ("Special Committee") 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 7,616,254 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 (a) 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, and (b) the affirmative vote of
          the holders of at least a majority of the outstanding shares of
          common stock, $.01 par value per share, of Advanced NMR
          ("Advanced NMR Common Stock") of the Recapitalization
          Transactions (as defined below), 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").  The term
          "Recapitalization Transactions" shall mean the following
          transactions:  (w) a 1 for 10 reverse stock split of the
          outstanding shares of Advanced NMR Common Stock (the "Reverse
          Stock Split"); (x) the amendment of Advanced NMR's Certificate of
          Incorporation to reflect the Reverse Stock Split; (c) the
          election of a new Board of Directors of Advanced NMR; (d) the
          change of name of Advanced NMR; and (e) the number of shares of
          Advanced NMR Common Stock authorized for grant under its 1993
          Employee Stock Option Plan and its 1993 Directors Stock Option
          Plan for Non-Employee Directors.

                    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 1,000 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
          issued and outstanding immediately prior to the Effective Time
          (other than AMS shares owned by Advanced NMR), shall be converted
          into the right to receive four-tenths (.40) of one fully paid and
          nonassessable share of Advanced NMR Common Stock (the "Conversion
          Number").  The Conversion Number has been determined taking into
          account (a) the Reverse Stock Split; and (b) the conversion of
          all AMS Debentures (as defined in Section 1.8) into shares of AMS
          Common Stock.  The number of shares of Advanced NMR Common Stock
          to be received by the AMS stockholders 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."

                     (b)  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.

                     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 Merger Consideration provided for in Section 1.4
                                                               -----------
          to holders of AMS Common Stock (other than AMS shares owned by
          Advanced NMR) 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 post-Reverse Stock Split 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
          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, AMS Warrants and AMS
                          ----------------------------------------------
          Debentures.  At the Effective Time, Advanced NMR shall assume all
          ----------
          of the rights and obligations of AMS pursuant to the (i) AMS
          Option Plans (as hereinafter defined), (ii) AMS Warrants (as
          hereinafter defined) and (iii) AMS Debentures (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) and AMS Warrants and conversion of the AMS Debentures,
          but, pursuant to the terms of such Options, AMS Warrants and AMS
          Debentures 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
          and AMS Warrants and conversion of the AMS Debentures immediately
          prior to the Effective Time, a number of shares of Advanced NMR
          Common Stock equal to the Merger Consideration.  (All such
          Options, AMS Warrants and AMS Debentures 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, warrant or conversion right
          to acquire shares of Advanced NMR Common Stock as described in
          the first sentence of this Section.  No fractional shares of
          Advanced NMR Common Stock shall be issued upon the exercise or
          conversion of such Derivative Securities, and if the number of
          shares of Advanced NMR Common Stock issuable upon exercise or
          conversion 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 unless otherwise
          provided in the instrument governing the Derivative Security. 
          The term "Options," "AMS Option Plans," "AMS Warrants" and "AMS
          Debentures" 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 does 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 (as
          defined in Section 3.7) 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, admini-
          strative 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 7,616,254 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 of AMS Common Stock issuable
          pursuant to the Derivative Securities, 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.  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 (i) the audited financial
          statements of AMS as of September 30, 1996 and September 30, 1995
          (including all notes thereto) which are included in the AMS SEC
          Documents (as defined in Section 3.6), consisting of the balance
          sheets at such dates and the related statements of income,
          stockholders' equity and cash flows for the twelve month periods
          ended September 30, 1996 and 1995; and (ii) the unaudited
          financial statements of AMS as of March 31, 1997 and March 31,
          1996 consisting of the balance sheets at such dates and the
          related statements of income, and cash flows for the three and
          six-month periods ended March 31, 1997 and March 31, 1996.  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 March 31, 1997 (the "March 1997
          Financials") or (ii) liabilities and obligations incurred since
          March 31, 1997 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, 1995, 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 twelve-month period ended September
          30, 1996 and its Quarterly Report on Form 10-Q for the four-month
          period ended March 31, 1997, (ii) all proxy statements relating
          to AMS' meetings of stockholders (whether annual or special)
          since January 1, 1995, and (iii) all other reports, forms and
          other documents filed by AMS with the Commission since January 1,
          1995 (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, except as
          otherwise set forth on Schedule 3.6.  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
          (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.

                     3.7  No Material Adverse Effects or Changes.  Except
                          --------------------------------------
          as listed on Schedule 3.7, or as disclosed in or reflected in the
                       ------------
          March 1977 Financials, or as contemplated by this Agreement or
          the Related Agreement, since March 31, 1997, 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, (ii) declared, set aside or paid any dividend or
          other distribution in respect of its capital stock; (iii) 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); (iv) 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; (v) 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 (vi) except in the ordinary
          and usual course of its business and consistent with its past
          practice forgiven or canceled any material debt or claim, or
          waived any material right.  "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.

                     3.8  Intellectual Property.  Schedule 3.8 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 3.8:
                                                   ------------

                     (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.

                    3.9  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.

                    3.10  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.

                    3.11  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.

                    3.12  Medical Devices.  Except as set forth on
                          ---------------
          Schedule 3.12, 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 3.12, there are no products proposed to be sold
                   -------------
          by AMS for which pre-market approval or 510(k) notification is
          required.

                    3.13  Contracts; No Defaults.  Schedule 3.13 list the
                          ----------------------   -------------
          material contracts to which AMS is a party.  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.

                    3.14  Fees of Brokers, Finders and Financial Advisors. 
                          -----------------------------------------------
          Except for the Special Committee ("Special Committee") of the AMS
          Board of Directors' engagement of Valuemetrics, Inc., 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.

                    3.15  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 May 26, 1997 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, 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).

                    3.16  Opinion of Financial Advisor.  AMS has received
                          ----------------------------
          the opinion of Valuemetrics, Inc., to the effect that, as of May
          26, 1997, the date the Board of Directors of AMS authorized the
          Merger, the consideration to be received in the Merger by the
          stockholders of AMS was 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 and
                         -----------------
          Acquisition Corp. (Advanced NMR, each subsidiary of Advanced NMR
          and Acquisition Corp. 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 domestic or foreign
          corporation in New Jersey and Massachusetts.

                    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) 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,
               which shall contain the registration of the shares of
               Advanced NMR Common Stock issuable pursuant to the Merger
               and the Recapitalization Transactions for approval by the
               stockholders of Advanced NMR.

                    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 43,747,623 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 March 31, 1997, there are
          _________ shares of Advanced NMR Common Stock reserved for
          issuance under Advanced NMR stock option plans and warrants (the
          "ANMR Derivative Securities").

                    (b)  Schedule 4.4 lists all ANMR derivative securities.
                         ------------
          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.  The Advanced NMR Common Stock
          trades on the NASDAQ small cap system.

                    4.5  Financial Statements; Undisclosed Liabilities;
                         ----------------------------------------------
          Other Documents.  (a)  For purposes of this Agreement, "Advanced
          ---------------
          NMR Financial Statements" shall mean (i) the audited financial
          statements of Advanced NMR as of September 30, 1996 and September
          30, 1995 (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 twelve-
          month period ended September 30, 1996 and the nine-month period
          ended September 30, 1995, and (ii) the unaudited financial
          statements of Advanced NMR as of March 31, 1997 and March 31,
          1996 which are included in the ANMR SEC Documents, consisting of
          the balance sheets at such dates and the related statements of
          operations, stockholders' equity and cash flows for the three and
          six-month periods ended March 31, 1997 and March 31, 1996.  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 Advanced NMR Form 10-K for the
          fiscal year ended September 30, 1996 and in the March 31, 1997
          balance sheet (the "ANMR Balance Sheet") in the Advanced NMR Form
          10-Q for the fiscal quarter ended March 31, 1997 ("AMNR March
          1997 Financials") or (ii) liabilities or obligations incurred
          since March 31, 1997 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, 1995, all of which complied when
          filed, in all material respects, with all applicable requirements
          of Section 12(g) of the 1934 Act.  Advanced NMR has heretofore
          delivered to AMS complete and correct copies of (i) its Annual
          Report on Form 10-K for the twelve-month period ended September
          30, 1996, as filed with the Commission, (ii) all proxy statements
          relating to Advanced NMR's meetings of stockholders (whether
          annual or special) since January 1, 1995, and (iii) all other
          reports, forms and other documents filed by Advanced NMR with the
          Commission since January 1, 1995 (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
          March 31, 1997, 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  Absence of Certain Changes or Events.  Except as
                         ------------------------------------
          disclosed in the ANMR March 1997 Financials or in Schedule 4.8
                                                            ------------
          hereto, since March 31, 1997 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.

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

                    (a)  all of the Intellectual Property is owned by
          Advanced NMR 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 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.  Advanced NMR 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.

                    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
          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 that could give rise to the
          payment of any amount that would not be deductible by reason of
          Section 280G of the Code.

                    4.12  Labor Matters.  Each of the ANMR Companies has
                          -------------
          conducted and currently is conducting, its 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, 1995, 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.  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.  Except for the products set
                          ---------------
          forth on Schedule 4.16, Advanced NMR sells no products for which
                   -------------
          a premarket approval of, or 510(k) notification to, the FDA or
          other Governmental Authority is required, and Advanced NMR is
          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 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.

                    4.17  Contracts; No Defaults.  Schedule 4.17 lists all
                          ----------------------   -------------
          material contracts to which any of the ANMR Companies is a party. 
          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 Houlihan Lokey Howard & Zukin) 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  Opinion of Financial Advisor.  Advanced NMR has
                          ----------------------------
          received the opinion of Houlihan Lokey Howard & Zukin, to the
          effect that, as of May 26, 1997, the date the Board of Directors
          of Advanced NMR authorized the Merger, the consideration to be
          paid in the Merger by Advanced NMR was fair from a financial
          point of view to the stockholders of Advanced NMR, and a true and
          complete copy of such opinion has been delivered to AMS prior to
          execution of this Agreement.


                                      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; AMS and Advanced NMR 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, (ii) a prospectus relating to the shares of
          Advanced NMR Common Stock to be issued by Advanced NMR in
          connection with the Merger, and (iii) the Proxy Statement
          relating to the Advanced NMR stockholders' meeting ("Advanced NMR
          Stockholders' Meeting") at which the Recapitalization
          Transactions will be voted upon, 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.  Advanced NMR will convene
          the Advanced NMR Stockholders' Meeting as promptly as practicable
          after the Registration Statement is declared effective to
          consider and vote upon the approval of the Recapitalization
          Transactions.  The board of directors of Advanced NMR 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
          and Advanced NMR stockholders in connection with the AMS
          Stockholders' Meeting and Advanced NMR Stockholders' Meeting,
          respectively, shall not at the date the Proxy
          Statement/Prospectus (or any amendment thereof or supplement
          thereto) is first mailed to AMS and Advanced NMR stockholders, at
          the time of the AMS Stockholders' Meeting and the Advanced NMR
          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 use
                         -----------------------
          its best efforts to cause to be prepared and submitted to NASDAQ
          an application covering the listing of the shares of Advanced NMR
          Common Stock on NASDAQ Small Cap or OTC Bulletin Board 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, or waiver thereof by Advanced NMR, 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  Approval of Recapitalization Transactions.  The
                         -----------------------------------------
          stockholders of Advanced NMR shall have approved the
          Recapitalization Transactions in accordance with its certificate
          of incorporation and by-laws and the DGCL.

                    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 in accordance with Section 5.08
          hereof.

                    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.

                    6.10  Dissenters' Rights.  There shall not be holders
                          ------------------
          of more than three percent (3%) of the issued and outstanding
          shares of AMS Common Stock who exercise dissenters' rights under
          the DGCL.


                                     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 Recapitalization Transactions.  The
                         -----------------------------------------
          stockholders of Advanced NMR shall have approved the
          Recapitalization Transactions in accordance with its certificate
          of incorporation and by-laws and the DGCL.

                    7.6  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.

                    7.7  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.

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

                    7.9  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.

                    7.10  Board Appointment.  The Advanced NMR Board shall
                          -----------------
          recommend the appointment of Bernard Weiner, M.D. 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 31, 1997, (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) the requisite vote
          of the stockholders of Advanced NMR to approve the
          Recapitalization Transactions shall not be obtained at the
          Advanced NMR Stockholders' Meeting, or any adjournments or
          postponements thereof, called therefor, (iv) 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 (v) 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 under clause (v) 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;

                    (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 or the Recapitalization
                    Transactions.

                    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 for the
          termination payments provided in Section 8.3 and except that
          nothing herein will relieve any party from liability for any
          willful breach of this Agreement.

                    8.3  Termination Payments.  If Advanced NMR shall
                         --------------------
          terminate this Agreement pursuant to Sections 8.1(b)(iv) or
          8.1(c)(i), AMS shall pay $500,000 to Advanced NMR not later than
          ten days after notice from Advanced NMR to AMS.  If AMS shall
          terminate this Agreement pursuant to Section 8.1(d)(i), Advanced
          NMR shall pay $500,000 to AMS not later than ten days after
          notice from AMS to Advanced NMR.

                    8.4  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 same extent
          as presently provided to the officers and directors of Advanced
          NMR.

                    (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)  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 8.4.

                    (d)  This Section 8.4 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.  Except as otherwise provided in Section
                         --------
          8.3 of this Agreement, 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 Sections 8.3 and 8.4.
          ---        ----------     --

                    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:  Jack Nelson,
                                        Chairman of the Board
                            Facsimile No.: (508) 658-8876

                            with a copy to:

                            Noah Klarish, Esq.
                            Noah Klarish & Associates, P.C.
                            230 Park Avenue
                            32nd Floor
                            New York, New York 10169
                            Facsimile No.:  (212) 973-1112

                    (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            


                                           ANMR/AMS MERGER CORP.



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


                                           ADVANCED MAMMOGRAPHY SYSTEMS,
                                             INC.


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



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