ADVANCED NMR SYSTEMS INC
S-3, 1995-09-14
ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS
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                                                   Registration No. 33-______

   As filed with the Securities and Exchange Commission on September 14, 1995
   ===========================================================================

                          SECURITIES AND EXCHANGE COMMISSION
                               WASHINGTON, D.C.  20549

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

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

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

                              ADVANCED NMR SYSTEMS, INC.
                (Exact name of registrant as specified in its charter)

                Delaware                         22-2457487
       (State or other jurisdiction           (I.R.S. Employer
       of incorporation or organization)      Identification Number)

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

                                   46 Jonspin Road
                           Wilmington, Massachusetts 01887
                                    (508) 657-8876
          (Address, including zip code, and telephone number, including area
                  code, of registrant's principal executive offices)

                                Jack Nelson, Chairman
                              ADVANCED NMR SYSTEMS, INC.
                                   46 Jonspin Road
                           Wilmington, Massachusetts 01887
                                    (508) 657-8876
              (Name, address, including zip code, and telephone number,
                      including area code, of agent for service)

                                    With copy to:

                                 Bruce A. Rich, Esq.
                                  Reid & Priest LLP
                                 40 West 57th Street
                               New York, New York 10019
                                    (212) 603-2000

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

       APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED  SALE TO THE PUBLIC:  From
       time to time after the effective date of this Registration Statement as
       determined by market conditions and other factors.

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

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

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

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

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

                           CALCULATION OF REGISTRATION FEE
       =======================================================================
                                   
                                      Proposed        Proposed
       Title of                       Maximum         Maximum
       Each Class of    Amount        Offering        Aggregate   Amount of
       Securities to    to be         Price           Offering    Registration
       be Registered    Registered    Per Share(*)    Price(*)    Fee(**)
       -----------------------------------------------------------------------
       Common Stock, 
       $.01 par 
       value per 
       share(*)      2,331,722 shs(*)  $ 3.75      $8,743,957.50   $3,015.16
       =======================================================================
        *  Issuable upon  exercise of  Warrants.   Includes, pursuant to  Rule
           416, an additional undeterminable  amount of shares of Common Stock
           by virtue of the anti-dilution provisions of the Warrants.
       **  Estimated solely  for purposes of determining  the registration fee
           pursuant to Rule 457(g).

            The Registrant  hereby amends this Registration  Statement on such
       date or dates as may be necessary to delay its effective date until the
       Registrant  shall file  a further  amendment which  specifically states
       that this  Registration Statement shall thereafter  become effective in
       accordance with Section 8(a) of the Securities Act of 1933 or until the
       Registration Statement  shall  become effective  on  such date  as  the
       Commission, acting pursuant to said Section 8(a), may determine.
       =======================================================================

       <PAGE>


                   PRELIMINARY PROSPECTUS DATED SEPTEMBER 13, 1995
                                SUBJECT TO COMPLETION
       PROSPECTUS

                              ADVANCED NMR SYSTEMS, INC.
                                   2,331,722 Shares
                             Common Stock, $.01 Par Value
          Issuable Upon Exercise of 2,331,722 Common Stock Purchase Warrants


          This Prospectus  relates to  the  offering by  Advanced NMR  Systems,
       Inc., a Delaware corporation (the "Company"), of up to 2,331,722 shares
       of  Common  Stock,  $.01 par  value  per  share  (the "Common  Stock"),
       issuable upon exercise  of up  to 2,331,722 Advanced  NMR Common  Stock
       Purchase Warrants (the "Warrants").  On August 31, 1995 (the "Effective
       Date"), the  Company issued the  Warrants to the  holders of shares  of
       common  stock, $.01 par value  per share of  Medical Diagnostics, Inc.,
       ("MDI"),  upon the merger (the  "Merger") of MDI  into ANMR Acquisition
       Corp., a wholly-owned subsidiary of the Company ("Acquisition  Corp."),
       pursuant to an  Agreement and Plan of  Merger, dated as of  May 2, 1995
       (the "Merger Agreement"), by and among the Company, MDI and Acquisition
       Corp.

          The  Warrants were  issued under  a  Warrant  Agreement, dated  as of
       August  31, 1995  (the "Warrant  Agreement"),  between the  Company and
       American Stock Transfer & Trust Company, as Warrant Agent (the "Warrant
       Agent").  The Warrants  entitle the holders thereof to  purchase shares
       of  Common Stock at  a price per  share of $3.75,  subject to customary
       anti-dilution adjustments.   Each Warrant may  be exercised until  5:00
       p.m., New York City time,  on the earlier of August 30, 2000, the fifth
       anniversary of the Effective Date, or the date fixed  for redemption of
       the Warrants.

          The Warrants are subject to redemption at the option  of the Company,
       in whole but not in part, at a redemption price of $.05 per Warrant, in
       the event  that the average  market price of  Common Stock has  been at
       least  $4.50  per share  (subject to  adjustment  for stock  splits and
       combinations)  for  any  twenty  consecutive  trading  days  after  the
       Effective Date.  Any Warrants not exercised prior to the date fixed for
       redemption thereafter  will represent only  the right to  receive, upon
       surrender, the redemption price therefor.

          The Warrants are quoted on the  NASDAQ National Market System ("NMS")
       under  the symbol  "ANMRW."  On  September __, 1995,  the closing sales
       price for a Warrant on the NASDAQ NMS was $__________.

          The shares  of the  Company's Common Stock  are quoted on  the NASDAQ
       NMS under the symbol "ANMR."   On September __, 1995, the closing sales
       price  for a share  of Common  Stock as  quoted on  the NASDAQ  NMS was
       $__________.

          The Company will receive proceeds from  the exercise of the Warrants,
       but not from  the sale of  the underlying  Common Stock.   See "Use  of
       Proceeds."

          All  expenses of  the registration  of  the  shares of  the Company's
       Common Stock issuable  upon exercise  of the Warrants  covered by  this
       Prospectus, estimated to be $30,000, are to be borne by the Company.

          THE  SECURITIES OFFERED  HEREBY  ARE SPECULATIVE  AND INVOLVE  A HIGH
       DEGREE OF RISK.  SEE "RISK FACTORS" ON PAGE 7 HEREIN.

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

                   The date of this Prospectus is __________, 1995


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


       <PAGE>

                                AVAILABLE INFORMATION

          The  Company is  subject  to the  informational requirements  of the
       Securities Exchange Act of  1934, as amended (the "Exchange  Act"), and
       in  accordance  therewith files  reports,  proxy  statements and  other
       information   with  the   Securities   and  Exchange   Commission  (the
       "Commission").   These reports, proxy statements  and other information
       can  be  inspected  and  copied  at  the  public  reference  facilities
       maintained by the Commission at Room 1024 of the Commission's office at
       450  Fifth Street  N.W., Washington,  D.C. 20549,  and at  its regional
       offices located at New York Regional Office, 7 World Trade Center, 13th
       Floor, New  York, New  York 10048;  and 500 West  Madison Street,  14th
       Floor,  Chicago,  Illinois  60661.   Copies  of  such  material can  be
       obtained from the  Public Reference  Section of the  Commission at  450
       Fifth Street, N.W., Washington, D.C. 20549, at prescribed rates.  

          This  Prospectus does not contain  all the information  set forth in
       the  Registration Statement  filed by  the Company with  the Commission
       (the "Registration Statement") with respect  to the securities to which
       this  Prospectus  relates,  certain  parts  of  which  are  omitted  in
       accordance  with  the rules  and regulations  of  the Commission.   For
       further  information with  respect to  the  Company and  the securities
       offered hereby,  reference  is  made  to  the  Registration  Statement,
       including the exhibits  thereto.   Each summary in  this Prospectus  of
       information  included  in the  Registration  Statement  or any  exhibit
       thereto is qualified in  its entirety by reference to  such information
       or exhibit.


                  INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

          Except to the extent modified or superseded by information contained
       herein,  the Company's Annual  Report on Form  10-K for the  year ended
       December 31, 1994, the Company's Quarterly Reports on Form 10-Q for the
       quarters ended March  31, 1995,  and June 30,  1995, respectively,  the
       Company's Reports  on Form 8-K  filed on May  5, 1995 and  September 8,
       1995,  respectively, and the Joint  Proxy Statement of  the Company and
       MDI, dated August  3, 1995, for  the Company's 1995  Annual Meeting  of
       Stockholders, as filed with the Commission, are hereby  incorporated by
       reference  in this Prospectus.   Any statement contained  in a document
       incorporated  or deemed to be incorporated by reference herein shall be
       deemed to be modified or superseded for  purposes of this Prospectus to
       the  extent that a  statement contained  herein modifies  or supersedes
       such statement.  Any such statement so modified or superseded shall not
       be deemed, except as so modified or superseded, to constitute a part of
       this Prospectus.

          All documents filed pursuant  to Sections 13(a), 13(c), 14  or 15(d)
       of the Exchange Act after the date of this Prospectus  and prior to the
       termination of this  offering shall be deemed incorporated by reference
       in this Prospectus and to be  a part hereof from the date of  filing of
       such documents.

          The Company undertakes  to provide  without charge  to each  person,
       including any  beneficial owner, to whom a  copy of this Prospectus has
       been delivered,  upon the written or oral request of any such person, a
       copy of any of  the documents or information incorporated  by reference
       herein,  other than exhibits to such documents unless such exhibits are
       specifically incorporated  by reference into such  documents.  Requests
       should be  directed to  Jack  Nelson, Chairman,  Advanced NMR  Systems,
       Inc.,  46  Jonspin  Road, Wilmington,  Massachusetts  01887;  telephone
       number (508) 657-8876.

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

                                         -2-

       <PAGE>

                                       SUMMARY

                                     THE COMPANY

       General
       -------

          Advanced  NMR Systems, Inc. ("ANMR"  as a separate  company and ANMR
       and  its subsidiaries  collectively sometimes the  "Company") develops,
       manufactures and  markets a  family  of technically  advanced  products
       related to ultra-fast magnetic resonance imaging ("MRI") systems.  ANMR
       manufactures the InstaScan  system, a sophisticated high-speed retrofit
       package  for  enhancing conventional  MRI systems.    ANMR is  also the
       exclusive integrator of very  high field (3T and 4T) MRI  systems using
       some of General Electric Medical Systems ("GEMS") Signa  MR components,
       third party components and an ANMR component.  ANMR has a 61% ownership
       interest in  Advanced  Mammography  Systems, Inc.  ("AMS").    AMS  has
       developed a dedicated MRI breast imaging system and is negotiating with
       certain medical facilities for  its installation.  On August  31, 1995,
       Medical Diagnostics,  Inc. ("MDI") became a  wholly-owned subsidiary of
       ANMR  through consummation  of  the  Merger.    MDI  provides  advanced
       radiology  services such  as MRI  and Single  Photon Emission  Computed
       Tomography ("SPECT") to patients in Massachusetts, New York,  Virginia,
       West  Virginia  and Tennessee  through a  network  of mobile  and fixed
       equipment  at hospital,  clinic and  freestanding facilities,  and also
       rehabilitation services for motor vehicle accident victims.

          ANMR is  a Delaware corporation.  Its executive office is located at
       46  Jonspin Road,  Wilmington, Massachusetts  01887, and  its telephone
       number is (508) 657-8876.

       ANMR
       ----

          From its inception in 1983 until November 1992, ANMR was exclusively
       an  R&D operation.    In 1992,  ANMR's  transition to  a  manufacturing
       operation  was initiated  with the  first commercial  sale of  its 1.5T
       InstaScan system and  receipt of clearance from the  U.S. Food and Drug
       Administration ("FDA") to market such system to clinical  institutions.
       Calendar year  1993 marked  the modification  of ANMR's  agreement with
       GEMS (the "GEMS Agreement") and the initial implementation of its sales
       and marketing program to sell the InstaScan system.  The GEMS Agreement
       was  further modified as  of June 30,  1994 in which  revenues from the
       sale of high field 3T and 4T systems would contribute to satisfying the
       GEMS obligation under the 1993 GEMS Agreement.

          MRI systems provide medical  images for the diagnosis  and detection
       of  disease.   The  systems use  large  magnets, digital  computers and
       controlled radio waves to derive cross-sectional (two dimensional)  and
       volume (three-dimensional) pictures  of human and animal anatomy and to
       provide information, which  can be displayed either on film  or a video
       monitor,  about  the  concentration  and  the  physical  and   chemical
       environment  of atomic  nuclei without the  need for  invasive surgery.
       This is  in contrast to other currently available diagnostic techniques
       such  as  Positron  Emission  Tomography  ("PET"),  Computerized  Axial
       Tomography ("CAT") and conventional X-ray equipment that subject living
       tissue to potentially harmful ionizing radiation.  MRI  systems present
       no  known  risk  to most  patients;  however,  the  long imaging  times
       associated with  commercially available systems may  result in degraded
       image quality due to patient movement and motion of the internal organs
       (especially  of the  heart  and of  the  abdominal organs)  during  the
       scanning period.

          ANMR  has  developed the  Instascan  system  which is  significantly
       faster than  other commercially available systems  and has demonstrated
       that the  adverse effects  of  any motion,  patient  or organ,  can  be
       substantially eliminated.   In addition,  natural physiological motions
       can  actually be visualized by  acquiring multiple InstaScan images and
       showing them in a movie sequence.  Following ANMR's lead, manufacturers
       of MRI  systems are now including Echo  Planar Imaging ("EPI") in their
       systems.

          The following significant events have occurred at ANMR since January
       1, 1994: ANMR  was awarded  an imaging  patent for  its new  technology
       referred to as  Catch and Hold and received clearance  from the FDA for
       commercial  sale of the Catch and Hold technology; installed its second
       InstaScan system  at Massachusetts  General Hospital  (MGH) to be  used
       specifically for clinical application; installed its first 3T Instascan
       retrofit  at the University of Pittsburgh; installed an EPI upgrade for
       the National Institutes of Health  (NIH) for the development 

                                        -3-

       <PAGE>

       of an  EPI upgrade  of its  4T  MRI  system;  received  two  purchase 
       orders  for integrating  and installing 3T MRI systems and announced 
       the receipt of an  additional  nine purchase  orders  for its  InstaScan
       systems from various research  and clinical sites; appointed  a Vice 
       President  of Sales and Marketing who  was a former head of sales for 
       GEMS; hired a GEMS senior scientist as an Engineering Program Manager;
       concluded an agreement to expand  its strategic alliance with  GEMS 
       through June  30, 1997 as the exclusive system  integrator of  the 
       high field  3T and 4T  MRI system; entered into an alliance with the 
       University of Texas and Elscint, Ltd. to develop, manufacture  and 
       distribute a  highly sophisticated,  fully integrated  functional  
       neuroimaging  system;  and  received regulatory clearance in Japan 
       for the commercial sales of its InstaScan system.

          In March 1993, the  GEMS Agreement was modified providing,  in part,
       for the minimum purchase by GEMS of 100 InstaScan systems by the end of
       calendar year 1994 with installation by the end  of calendar year 1995.
       If by December 31,  1995, GEMS has not paid ANMR for  the 100 units, it
       was to  pay ANMR  $100,000 for  each unit  of  the first  75 units  not
       purchased and $50,000 for each of units 76-100 not purchased.  The GEMS
       purchase obligation was modified  as of June 30,  1994 in an  agreement
       with GEMS pursuant to which revenues from the sale of 3T and 4T systems
       will contribute to satisfying  the GEMS obligation under the  1993 GEMS
       Agreement.   The 1994 modification  covers a three  year period through
       June  30, 1997.    The GEMS  purchase  obligation is  subject  to usual
       conditions of  sale,  including  changes  in  health  care  regulations
       covering  MRI products.    The  GEMS  period  of  exclusivity  for  the
       InstaScan  system terminated  on December  31, 1994.   At  December 31,
       1994, seventeen InstaScan sales and two 3T sales were  credited to this
       arrangement with GEMS.   As of January 1, 1995,  sales of the InstaScan
       system are no longer limited under the 1993 GEMS Agreement.  All future
       sales  of the InstaScan system will be  sold directly to customer sites
       or through GEMS  and will  be negotiated on  mutually acceptable  terms
       with  each customer.  Purchase orders of the InstaScan systems obtained
       after  December 31,  1994 will  generally not  be credited  towards the
       dollar value of GEMS's obligation under the 1993 GEMS Agreement.

          In July 1994, ANMR concluded an agreement with GEMS for  the sale of
       3T  and 4T  research  MR systems  to  GEMS through  June  1997.   These
       systems, while not yet submitted to the FDA for  clearance for clinical
       use,  will  be sold  to  premier research  institutions  throughout the
       world.   The first  such  system was  installed  at the  University  of
       Pittsburgh  in  April  1994.    This  first  system  was  developed  in
       collaboration  with  the  MRI  group  at  the  corporate  research  and
       development center of GEMS.   All future systems will be integrated  by
       ANMR at its plant.

          In  June 1992, ANMR licensed  (the "ANMR License  Agreement") to AMS
       the right  to use ANMR's InstaScan  technology in the development  of a
       dedicated breast imaging system (the "Field of Use").  As consideration
       for the ANMR License Agreement, AMS paid to ANMR  $1,680,000 and issued
       4,000,000 shares of  AMS Common  Stock, of which  2,750,000 shares  are
       subject to an escrow  arrangement for release based upon  AMS achieving
       certain  future minimum pre-tax income, or the  market price of the AMS
       common stock reaching certain levels.

          ANMR  believes other  dedicated use  (or partial body)  MRI scanners
       might be developed for fields  of use in addition to mammography.   AMS
       has  not been granted the right to  use any technology now or hereafter
       obtained  by  ANMR  in connection  with  any  other  dedicated use  MRI
       scanners.   However, AMS has  been granted  a 50% interest  in any  net
       profits,  as defined in the ANMR License Agreement (after allocation of
       development  expenses), derived  by ANMR  from the  sale or  license of
       dedicated  use  MRI  scanners  utilizing  or  based upon  the  Licensed
       Technology outside of  the Field  of Use.   The ANMR License  Agreement
       provides that (i)  any inventions  outside the Field  of Use  developed
       solely  by ANMR or an ANMR  entity shall be owned by  ANMR or such ANMR
       entity and automatically  licensed to  AMS on  an exclusive,  worldwide
       basis, within the Field of Use, (ii) any inventions developed solely by
       AMS  shall be automatically licensed to ANMR on an exclusive, worldwide
       basis for use solely outside the Field of Use, and (iii) any inventions
       outside the Field of  Use jointly developed by ANMR and AMS  or an ANMR
       entity shall be jointly owned in equal shares by ANMR, on the one hand,
       and AMS or an ANMR entity, on the other hand, and AMS or an ANMR entity
       shall  automatically license  its  interest to  ANMR  on an  exclusive,
       worldwide  basis.  Accordingly, ANMR  would obtain the  right to future
       technology developed by AMS for use in connection with mammography, and
       AMS shall obtain the right to further technology  developed by ANMR for
       use outside the Field of Use.
       
          AMS  is  continuing its  mission to  develop  a dedicated  MR breast
       imaging  system.   Over the  past year,  AMS has  developed  an imaging
       technique  to  suppress  fat in  breast  images.    This technology  is
       particularly useful in 

                                        -4-

       <PAGE>

       imaging dense breasts which present a problem in interpreting 
       conventional X-ray images.  This new technique was developed as a 
       collaboration between ANMR and AMS.  AMS has completed a prototype
       of its dedicated MR  breast imaging system  and is currently
       negotiating with certain medical facilities for its installation.

          To  optimize ANMR's  and AMS's  operating  efficiency, ANMR  and AMS
       entered into a Shared Services Agreement as of January 25, 1993 whereby
       the  companies  share  common  expenses  and  functions,  for  example,
       executive  officers, marketing,  field service,  accounting, regulatory
       approvals,  and  manufacturing operations.    This  agreement has  been
       extended  to January 24, 1996.   From an  engineering and manufacturing
       perspective,  this Shared  Services Agreement  has  greatly facilitated
       development  of   the  prototype  mammography  scanner   and  has  also
       benefitted  ANMR's   development  of  enhancements  to   its  InstaScan
       products.

          In January 1995, AMS called  for redemption of all of its  remaining
       outstanding redeemable warrants to purchase shares of its common stock.
       Warrants  for 226,000 shares had previously been exercised prior to the
       call.   All  of the  outstanding warrants  were exercised prior  to the
       redemption date for approximately 774,000 shares of AMS common stock at
       the exercise price of $3.00 per share.   Consequently, no warrants were
       actually redeemed.   AMS is  using the $2.3  million proceeds  from the
       exercise  of the warrants  for continuing research  and development and
       for general working capital purposes.

       MDI
       ---

          MDI  was founded in 1984  to operate mobile  radiology services as a
       full-service medical provider under its own  clinic licenses where such
       operation is allowed under state regulation.  It used the proceeds from
       a 1992 public offering in part to acquire minority interests in current
       MDI  operations from  certain partners,  to acquire  imaging businesses
       operating in New  York, Virginia,  West Virginia and  Tennessee and  to
       enter into the rehabilitation business in Massachusetts.

          Effective November  5, 1993, MDI  acquired certain assets  from, and
       entered into  contractual arrangements  to provide  MRI services  to, a
       privately  held  professional  medical corporation  which  provides MRI
       services  to a regional network of hospitals and clinics located in the
       Finger Lakes region of New York State.

          In May 1994, MDI completed its acquisition of Meritus Health Systems
       and affiliates ("Meritus") headquartered in Roanoke, Virginia.  Meritus
       provides  MRI and SPECT imaging services in Virginia, West Virginia and
       Tennessee.

          MDI often acts as  a full-service medical provider in  its radiology
       services business,  particularly MRI services, providing  MRI and SPECT
       equipment and technologists  and typically providing  or arranging  for
       the necessary physician and support personnel, scheduling and screening
       of   patients,  maintaining   medical   and   administrative   records,
       establishing charges and billing and collecting revenues from  patients
       and third-party payers.   In these instances,  host hospitals generally
       function as a landlord for an MDI subsidiary or affiliate operating the
       MRI or SPECT  services.  By  operating in this manner,  MDI is able  to
       control  the  hours  of operation  for  its  units  and manage  patient
       scheduling, permitting MDI to more fully utilize its equipment.  MDI is
       also able  to expand demand for  its services by marketing  directly to
       referring physicians and third-party payers, the primary sources of MRI
       patient business, including physicians who are not affiliated with  the
       host  hospitals.   MDI believes  that  controlling all  or most  of the
       radiology services, including holding the required clinic licenses when
       possible, enhances its ability  to negotiate renewals or  extensions of
       its arrangements with the hospitals.

          A  majority  of MDI's  MRI services  are  provided under  the "full-
       service"  model.   SPECT services  are provided  under both  vendor and
       provider  models.   In circumstances  where MDI  does not operate  as a
       provider, it endeavors to improve utilization and operating performance
       by  applying  the marketing  and  other skills  it has  developed  as a
       provider to these operations.

          On  January 31, 1995, MDI entered  the rehabilitation market through
       its  acquisition  of 75%  of  the  net assets  of  the  MVA Center  for
       Rehabilitation, Inc. in Springfield, MA, and entered into a partnership
       to  provide physician  care, physical  therapy and  case management  to
       motor vehicle accident victims.   MDI is evaluating this  business and,

                                         -5-

       <PAGE>

       although no assurances can be given, MDI anticipates opening additional
       MVA  centers and  may  seek to  develop  other opportunities  in  niche
       rehabilitation markets.

       The MDI Merger
       --------------

          Upon the Merger, ANMR  issued 6,670,157 shares of ANMR  Common Stock
       and  2,331,722  Warrants  and also  paid  an  aggregate of  $11,196,102
       (exclusive  of any  payments  in lieu  of  the issuance  of  fractional
       shares) to  the holders of common  stock, $.01 par value  per share, of
       MDI (the "MDI Common Stock").  The outstanding options and warrants for
       the purchase  of an  aggregate of 560,894  shares of  MDI Common  Stock
       became exercisable for ANMR Common Stock, ANMR Warrants and/or cash.

          Pursuant to the Merger Agreement, each share of MDI Common Stock was
       exchangeable  for (i) $8.00 in cash (the "Cash Consideration"), or (ii)
       2.861 shares of ANMR  Common Stock plus one Warrant  (collectively, the
       "Share  Consideration"),   or  (iii)   a   combination  of   the   Cash
       Consideration  and the Share Consideration, provided that not more than
       37.5%  of  the  MDI  Common  Stock could  be  exchanged  for  the  Cash
       Consideration.  Based upon elections made by MDI Stockholders, the Cash
       Consideration was pro  rated so  each stockholder who  had elected  the
       Cash  Consideration received $4.02 in cash, 1.423 shares of ANMR Common
       Stock and .4975 of a Warrant for each MDI share exchanged. 

          The Cash  Consideration was financed in  part by a $9  million five-
       year term loan facility and  a $6 million revolving credit facility  to
       MDI from Chemical  Bank, and guaranteed  by ANMR and  certain of  MDI's
       subsidiaries.   The loan  facilities are  secured  by a  first lien  on
       specified assets of MDI, ANMR and certain designated subsidiaries,  and
       a pledge of ANMR's unescrowed shares  of AMS Common Stock.  The balance
       of the  loan proceeds was used  to repay MDI's prior  bank facility and
       for general working capital.

          Upon  the Merger,  the ANMR  Board of  Directors was  increased from
       seven to ten persons and John A. Lynch, Edward J. Connors and Milton L.
       Glass, designees of the prior MDI Board, were added as directors to the
       ANMR Board and  Mr. Lynch was  elected Senior  Vice President of  ANMR.
       The  ANMR Board also approved a change  in the Company's fiscal year to
       September 30, from December 31, to conform to the MDI fiscal year.

                                         -6-

       <PAGE>

                                     RISK FACTORS

          The shares of the  Company's Common Stock issuable upon  exercise of
       the Warrants are  speculative in nature  and involve  a high degree  of
       risk.   In addition to  the other information  in this  Prospectus, the
       following  information  should  be  considered  carefully by  potential
       purchasers  in evaluating the Company and its business before making an
       investment in the shares of Common Stock offered hereby:

          Significant  Indebtedness  and  Debt  Service  After  Merger.    The
       financing  related  to the  Merger  has resulted  in  a  high level  of
       indebtedness for the  Company.  At March  31, 1995, on a  pro forma and
       consolidated  basis assuming  that the  Merger closed  as of  March 31,
       1995, the Company  would have  had indebtedness for  borrowed money  of
       approximately $21  million, including the current  portion of long-term
       debt  of approximately  $8 million,  representing approximately  71% of
       stockholders' equity.   The  Company's high level  of indebtedness  has
       several important  consequences, including,  but not  limited to:   (i)
       significant  interest  expense   and  principal  repayment  obligations
       resulting  in  substantial  annual  fixed  charges;   (ii)  significant
       limitations  on   its  ability  to  obtain   financings,  make  capital
       expenditures and  acquisitions and take advantage  of other significant
       business   opportunities   that   may  arise;   and   (iii)   increased
       vulnerability to adverse general economic and  industry conditions.  In
       addition, under the credit  agreements with the bank, the  Company will
       be  required  to  comply  with  significant  affirmative  and  negative
       covenants  and  financial  ratios,  including  interest coverage,  debt
       service  coverage and debt to tangible net worth.  Non-compliance could
       result in the acceleration of such indebtedness. 

          History of  Net Losses.  From  its inception in 1983  until November
       1992,  ANMR  was  engaged  exclusively  in  research  and   development
       activities.  In  1992, ANMR's transition  to a manufacturing  operation
       was  initiated with  the first  commercial sale  of its  1.5T InstaScan
       system and receipt of clearance  from the FDA to market such  system to
       clinical  institutions.  From its inception through June 30, 1995, ANMR
       had aggregate gross revenues of $11,861,000 from sales of the InstaScan
       system  and  related  products.   ANMR's  cash  requirements  have been
       exceeding its  resources  due  primarily  to  expenditures  related  to
       research and development.  ANMR, including consolidated results of AMS,
       has incurred  net losses of  $3,547,000, $6,167,000 and  $5,493,000 for
       each  of the  fiscal  years ended  December 31,  1994,  1993 and  1992,
       respectively.  ANMR believes that, based on MDI's earnings history, the
       additional cash flow  to be provided  by MDI after consummation  of the
       Merger  could  provide ANMR  with  net operating  income  commencing in
       fiscal year 1996,  assuming certain expected  savings and  efficiencies
       are achieved.

          Adverse Accounting and Tax Consequences of Goodwill.  The Merger was
       accounted  for  by  the purchase  method  of  accounting.   Under  this
       accounting  method, the  majority  of the  purchase  price for  MDI  --
       approximately  $29 million  -- was  allocated to  the  intangible asset
       goodwill which  represents approximately  47% of  the total  assets and
       approximately 87%  of  the stockholders  equity  of the  Company  post-
       Merger.  The Company will incur an annual non-cash charge to operations
       for the amortization of  goodwill of approximately $1 million  over the
       next 30 years, which will not be deductible for income tax purposes.

          No  Assurance of  Future  Sources of  Capital  to Support  and  Grow
       Business.   The Company will  require capital to  finance its continued
       investment in research  and development,  and to support  and grow  its
       existing businesses, particularly  its MRI technologies.   Inasmuch  as
       ANMR expects to incur  additional operating losses with respect  to its
       MRI technologies following the Merger and the bank facilities  restrict
       the ability of MDI to upstream funds to ANMR, there can be no assurance
       that ANMR will have adequate working capital to fund these activities.

          Volatility of Common Stock Price.  The market price of the Company's
       Common  Stock historically has been volatile.  Factors such as quarter-
       to-quarter variations  in revenues  and announcements  of technological
       innovations  or new products by  ANMR or its  competitors, customers or
       suppliers could cause the market price of the Common Stock to fluctuate
       significantly,  even with  the  addition  of  the  MDI  business.    In
       addition, in recent  years the stock markets in general, and the market
       prices  for diagnostic  imaging service  companies in  particular, have
       experienced 

                                         -7-

       <PAGE>

       significant volatility,  which often may be unrelated  to the operating
       performance of the affected companies.  Such volatility could adversely
       affect the market price of the Company's Common Stock.

          Lack of  Dividends; Restrictions on  Payment of Dividends.   Neither
       ANMR nor MDI has ever paid a dividend to its stockholders.  The Company
       intends  to retain  all available  earnings, if  any, generated  by its
       operations for the development and growth of its business and does  not
       anticipate  paying  any  cash dividends  on  its  Common  Stock in  the
       foreseeable  future.   In addition,  the payment  of cash  dividends is
       restricted under the bank credit agreement.

          Unpredictable  Results  of  Healthcare  Reform  Initiatives.    Many
       competing proposals have been introduced in Congress and  various state
       legislatures  to reform the present  health care systems.   The Company
       cannot  predict the  health care  reforms that  may be  enacted or  the
       effect that any such  reforms may have on their  respective businesses.
       The ability of many of  MDI's patients or health care providers  to pay
       for MDI's  services  depends  upon  governmental  and  private  insurer
       reimbursement policies.  A  significant change in these policies  could
       adversely affect MDI's businesses.

          Reliance on Arrangement with GEMS.  One of the products manufactured
       by ANMR  is the  InstaScan  System.   The InstaScan  retrofit has  been
       configured  to only  GEMS  Signa  Systems  as  ANMR  had  an  exclusive
       marketing   arrangement   with   GEMS   through   December  31,   1994.
       Reconfiguring  its  units  to  make  InstaScan  compatible  with  other
       manufacturers' MRI  systems would require substantial  time and involve
       substantial  costs.  There can be no  assurance that any effort by ANMR
       to make InstaScan  compatible with other  manufacturer's systems  would
       ultimately be successful.

          Technological Development Limited  By Third Party  Patents.   ANMR's
       business  is  dependent  upon  the  ability  to   offer  systems  which
       incorporate  the most  current technology.   This  requires substantial
       expenditures for research and  development.  In addition, some  of this
       technology is protected by patents and patent applications of others to
       which ANMR  has no  rights.   Such  patents, if  valid,  may limit  the
       proposed  business  of  ANMR  to  new  technologies  and  new  magnetic
       resonance diagnostic methods outside the scope of such patents.  In the
       event  that  one or  more  patent holders  were  to assert  a  claim of
       infringement with respect to  any product or technology which  ANMR may
       develop,  no  assurance can  be  given  that such  claim  would not  be
       successful, and  if successful, that  its impact  on ANMR would  not be
       materially adverse. 

          Potential Adverse Impact of  Competing Services and Equipment.   The
       health services  and equipment industry  is highly competitive.   Since
       ANMR  develops  imaging  products  that  ultimately  function  as   one
       component  part of a larger system, it  is dependent in large part upon
       manufacturers of such complete MRI systems to accept and endorse ANMR's
       products.   Most of these systems' manufacturers have the capability to
       develop  and  manufacture  imaging  components,  such  as  echo  planar
       imaging, similar to those developed by ANMR.  There can be no assurance
       that these  manufacturers will  continue to  accept and  endorse ANMR's
       products.    Some  entities have,  and  others  may develop,  competing
       products or  services which may  be superior to those  proposed by ANMR
       and/or AMS.  Many  of these other  entities have greater resources  and
       more   substantial   marketing   capabilities   than  ANMR   and   AMS.
       Furthermore,  in  some  cases,  other imaging  equipment  such  as  PET
       scanners,  conventional x-rays, CAT  scanners, nuclear medicine systems
       and ultrasound systems may be  used instead of MRI systems for  certain
       diagnostic procedures, and there are several other methods presently in
       practice for the  detection of  breast cancer.   These other  equipment
       systems may be  less expensive  to purchase, install  and maintain  and
       involve  lower  patient  charges for  their  use.    MDI competes  with
       hospitals, private  clinics,  physicians and  therapist  rehabilitation
       practices  and other independent  providers of rehabilitation services,
       many of which possess  greater financial resources or are  better known
       than MDI.  

          Potential Adverse Impact of Government Regulation.  The manufacture,
       marketing  and use of magnetic  resonance systems and  MRI services are
       subject to  various federal and state  regulations, including premarket
       clearance by  the FDA  for the  MRI Systems.   Such clearance  may take
       considerable time  to obtain  and in  some cases  may  not be  granted.
       Until   required  FDA   or  state   approvals  are   obtained,  neither
       governmental agencies nor private 

                                         -8-

       <PAGE>

       insurers  will reimburse AMS for the cost of magnetic resonance systems
       and  diagnostic  procedures.  Furthermore,  reimbursement  may  not  be
       authorized  even after approvals are  granted or it  may be delayed for
       substantial periods after such approvals.  The market for the Company's
       products and services, particularly the MDI services, is also adversely
       affected  by  state certificate  of need  ("CON")  laws, which  in some
       states limit the establishment  of new facilities and services  as well
       as the purchase of major medical  equipment.  There can be no assurance
       that  CONs can  be obtained  if needed  and without  a costly  and time
       consuming  administrative  process.   In  addition,  federal and  state
       health care  and related  regulations are  subject to  constant change.
       The Company cannot predict what changes may be enacted which may affect
       its  business or the manner in which  its business would be affected by
       such  changes.    In addition,  manufacturers  of  medical  devices are
       subject  to   FDA   regulations,   including   compliance   with   good
       manufacturing practice regulations.   There  can be  no assurance  that
       these  laws and  regulations will  not have  an adverse  impact on  the
       Company in the future. 

          Potential  Adverse Impact  of Reliance  on Governmental  and Private
       Reimbursement of  Health Care Costs.    ANMR products are  used in both
       clinical  and research  environments.   Clinical customers  will depend
       upon  governmental  and private  insurer  reimbursement  policies.   In
       addition,  in  most  cases, the  ability  of  patients  or health  care
       providers  to  pay for  the services  which  MDI provides  depends upon
       governmental and private insurer reimbursement policies.  Consequently,
       such  policies have  a direct  effect on  the ability  of  patients and
       providers to  use and pay  for services  rendered by ANMR  customers to
       these parties and the ability of patients and  health care providers to
       use and pay for MDI's  services.  As a result, any  significant adverse
       change  in such  reimbursement policies  would likely  adversely affect
       ANMR's and MDI's business.

             Under federal cost-containment  legislation currently in  effect,
       hospital inpatients covered by Medicare are classified into  diagnostic
       related groups ("DRGs") in accordance with the patients' diagnoses, and
       reimbursement   to  hospitals   for  these   patients  is   limited  to
       predetermined  amounts assigned  to particular  DRGs.   Similarly, some
       states  limit  reimbursement  of  health care  costs  by  select payers
       according to predetermined amounts.  These predetermined amounts do not
       necessarily  cover all  of the  cost of  the medical  services actually
       provided.  Currently, the  DRG program is not applicable  to outpatient
       services such as those  generally provided MDI and,  consequently, many
       health care providers have an incentive to refer patients to diagnostic
       imaging services  on an outpatient basis.  If in the future DRG program
       is  expanded  to include  outpatient  services, MDI's  business  may be
       materially and adversely affected.

             Most health care insurers compensate a service provider, such  as
       MDI,  for a  percentage of  its  charge for  MRI scans  based upon  the
       "reasonable and customary"  fee for such service  for that geographical
       area.  The  determination of what  is "reasonable and customary"  is in
       the insurer's sole discretion.  As  a result, MDI must seek the payment
       balance, if any, directly from the  patient, which, given the costs  of
       debt  collection, may  be impractical.   In  addition,  certain states,
       including Massachusetts,  prohibit this so-called "balance  billing" of
       patients under  certain  circumstances, and  in other  states, MDI  has
       agreed with one or  more insurers not  to balance bill their  patients.
       MDI also contracts with  managed care payers for a  negotiated fee-per-
       scan  which is usually substantially below MDI's charge for such scans.
       If  the  percentage  of   patients  insured  by  managed   care  payers
       substantially increases, or if managed care payers substantially reduce
       the fee-per-scan  they are willing to pay,  MDI could be materially and
       adversely  affected.  Additionally, if  a substantial number of private
       insurers were  to  adopt diagnostic  related  group-type  reimbursement
       schedules  and  if these  schedules did  not  permit MDI  to profitably
       provide MRI services, MDI would be materially and adversely affected.

          Dependence  on, and  Need  for,  Key  Personnel.    Because  of  the
       specialized nature of its  business, the Company is dependent  upon the
       efforts of its  current officers and employees, and upon its ability to
       attract  and retain technically qualified  personnel.  The  loss of the
       services of Jack Nelson, Chairman of the Board and Treasurer of ANMR or
       John A.  Lynch, President of  MDI and  Senior Vice  President of  ANMR,
       could  materially  adversely  affect the  Company.    There  is intense
       competition for  qualified personnel  in  the MRI  industry,  including
       competition from companies  with substantially  greater resources  than
       the Company.  There can be no assurance that the Company 

                                         -9-

       <PAGE>

       will  be  successful  in  recruiting  or  retaining  personnel  of  the
       requisite  scientific caliber or in the requisite numbers to enable the
       Company to conduct its business as planned.

                                   USE OF PROCEEDS

          Assuming all  the Warrants are  exercised, the Company  will receive
       net proceeds  of approximately  $8,700,000,  after payment  of  certain
       expenses.     The   Company  estimates  that   the  expenses   will  be
       approximately $30,000.  The proceeds to be received by the Company upon
       the  exercise of  the  Warrants  will  be  utilized  for  research  and
       development by ANMR, marketing and working capital purposes.  

                              DESCRIPTION OF SECURITIES

          The  Company's   authorized  capital  stock  currently  consists  of
       50,000,000 shares of Common Stock.  As of September 5, 1995, 30,238,571
       shares of Common Stock were issued and outstanding.

       Common Stock

          Holders of the  Company's Common Stock are entitled to  one vote per
       share on all matters submitted to a vote of stockholders of the Company
       and to  receive dividends when,  as and  if declared  by the  Company's
       Board from funds legally  available therefor.  Upon liquidation  of the
       Company, holders of Common Stock  are entitled to share ratably  in any
       assets available for distribution to stockholders after payment of  all
       obligations  of ANMR  and  priority payments  to  any senior  class  of
       capital  stock.  Holders  of the  Common Stock  do not  have cumulative
       voting rights or preemptive, subscription or conversion rights.

       Warrants

          General.  The Warrants were issued under the Warrant Agreement.  The
       description of the Warrant  Agreement set forth below does  not purport
       to be complete  and is qualified  in its entirety  by reference to  the
       Warrant Agreement.

          Each Warrant initially entitles  the holder thereof to  purchase one
       share  of Common Stock  at an  exercise price  of $3.75  (the "Exercise
       Price").  The Exercise Price  and the number of shares of  Common Stock
       issuable upon the exercise of each Warrant are subject to adjustment in
       certain events  described below.  Each  Warrant may be  exercised on or
       after the issuance thereof and until  5:00 p.m., New York City time, on
       the earlier of August 30, 2000 or the date fixed for  redemption of the
       Warrants  (as  described below)  in accordance  with  the terms  of the
       Warrants and the  Warrant Agreement.   To the extent  that any  Warrant
       remains outstanding  after such  time,  such unexercised  Warrant  will
       automatically terminate.

          Exercise.   Warrants may be exercised by surrendering to the Warrant
       Agent,  American Stock Transfer & Trust Company (the "Warrant Agent") a
       signed Warrant  certificate indicating the warrantholder's  election to
       exercise  all  or  a   portion  of  the  Warrants  evidenced   by  such
       certificate.   Surrendered certificates must be  accompanied by payment
       of  the aggregate  Exercise  Price in  respect of  the  Warrants to  be
       exercised, which  payment  may be  made  in  cash or  by  certified  or
       official  bank  check  payable  to  the  order  of  the  Company.    No
       adjustments  as to cash dividends with respect to the Common Stock will
       be made upon any exercise of Warrants.

          If  fewer than  all the  Warrants evidenced  by any  certificate are
       exercised,   the  Warrant   Agent  will   deliver  to   the  exercising
       warrantholder  a new Warrant  certificate representing  the unexercised
       Warrants.   The Company will not be required to issue fractional shares
       of its Common Stock upon  exercise of any Warrant, and in  lieu thereof
       will pay an  amount equal to  the same fraction  of the current  market
       value per share of Common Stock, determined as  provided in the Warrant
       Agreement.

                                         -10-

       <PAGE>

          Antidilution and Exercise  Price Adjustments.  The number  of shares
       of Common Stock purchasable upon  the exercise of each Warrant  and the
       Exercise Price are  subject to  adjustment in connection  with (a)  the
       issuance  of  a  stock  dividend  to holders  of  Common  Stock,  or  a
       combination   or  subdivision   of  Common   Stock,  and   (b)  certain
       distributions  by the  Company  to  the  holders  of  Common  Stock  of
       evidences of indebtedness or of its assets (excluding cash dividends or
       distributions out of earnings  or out of surplus legally  available for
       dividends)  or of  convertible  securities, all  as  set forth  in  the
       Warrant Agreement.  Notwithstanding the foregoing, no adjustment in the
       Exercise Price  will be  made until  cumulative adjustments require  an
       adjustment of at least $.05.

          In  case of  any reclassification,  capital reorganization  or other
       change  to the  Common Stock,  or any  consolidation or  merger of  the
       Company with or into another corporation, or any  sale or conveyance of
       the property  of the  Company  as an  entirety or  substantially as  an
       entirety, the Warrant Agreement will require that effective  provisions
       will be  made so that each  holder of an outstanding  Warrant will have
       the right  thereafter to exercise his  or her Warrant for  the kind and
       amount of  securities and property  receivable in connection  with such
       reclassification, capital reorganization, consolidation, merger or sale
       by  a holder  of the number  of shares  of Common Stock  for which such
       Warrants were  exercisable immediately  prior thereto. Furthermore,  if
       the Company grants to the holders of Common Stock rights or warrants or
       options  to  purchase   the  Company's  Common   Stock  or   securities
       convertible  into or exchangeable or exercisable  for Common Stock, the
       Company shall  concurrently grant  to  each warrantholder  the  rights,
       warrants  or  options to  which  such  warrantholder  would  have  been
       entitled if  such warrantholder were the holder of the number of shares
       of Common Stock then issuable upon exercise of his or her Warrants.

          Redemption.   All,  but not  less  than all,  of the  Warrants  then
       outstanding  may be  redeemed  at  the  option of  the  Company,  at  a
       redemption  price of  $.05 per  Warrant, in the  event that  the Market
       Price (as hereinafter  defined) of the Common  Stock has been  at least
       $4.50 per share (the "Target Price").  For this purpose, "Market Price"
       means the average closing  price reported for ANMR Common Stock  on the
       NASDAQ  National  Market System  (or  other principal  market)  for any
       twenty consecutive trading days.  If the Common Stock is subdivided  or
       combined into a greater or  smaller number of shares, the  Target Price
       will be proportionately adjusted.

          The Company must give  irrevocable notice of its election  to redeem
       the Warrants no  more than ten  trading days following  the end of  the
       twenty consecutive day  period referred to in  the preceding paragraph.
       Notice of redemption  will be mailed to warrantholders not more than 30
       days nor less than 20 days before the date fixed for redemption, and in
       any event not  more than five  trading days  following delivery of  the
       notice to the Warrant Agent referred to in the preceding sentence.  Any
       Warrant so called for redemption may be exercised until 5:00 p.m.,  New
       York  City time,  on the  business day  immediately preceding  the date
       fixed for redemption,  and immediately thereafter any such  Warrant, to
       the extent not  exercised, will  represent only the  right to  receive,
       upon surrender, the redemption price therefor.

       Reports

          The  Company furnishes to its  stockholders and will  furnish to its
       warrantholders, after the close  of each fiscal year, an  annual report
       containing audited financial statements.  In addition, the  Company may
       furnish  to its stockholders  and warrantholders such  other reports as
       may be authorized, from time to time, by its Board of Directors.

       Transfer Agent, Registrar and Warrant Agent

          American Stock Transfer & Trust Company, 40 Wall Street, 46th Floor,
       New  York, New York 10005, is the transfer agent, registrar and Warrant
       Agent for the securities of the Company.

                                         -11-

       <PAGE>

                                 PLAN OF DISTRIBUTION

          No underwriter is being utilized in connection with this offering or
       with the exercise of the Warrants.  The 2,331,722 shares of ANMR Common
       Stock are issuable upon exercise of the Warrants.   

          The  Company is registering the shares of Common Stock issuable upon
       exercise of the  Warrants and not the resale thereof  by the holders of
       the shares of Common Stock after such exercise.


                                       EXPERTS

          The audited consolidated financial statements of ANMR as of December
       31,  1994 and 1993,  and for the  three years ended  December 31, 1994,
       which have been incorporated by reference in this Prospectus, have been
       audited  by  Richard  A.  Eisner  &  Company,  LLP,  independent public
       accountants, as indicated in  their reports with respect thereto  which
       are incorporated by reference  in this Prospectus in reliance  upon the
       authority of said firm as experts in accounting and auditing.

          The financial statements of MDI and its subsidiaries as of September
       30, 1994 and  1993 and for  the three years  ended September 30,  1994,
       which have been incorporated by reference in this Prospectus, have been
       audited by  Arthur Andersen  LLP,  independent public  accountants,  as
       indicated in their reports with respect thereto which appears elsewhere
       herein, are  incorporated by reference  in this Prospectus  in reliance
       upon the authority of said firm as experts in accounting and auditing.


                                    LEGAL MATTERS

          Legal matters relating to  the Common Stock will be  passed upon for
       the Company by Reid  & Priest LLP, 40  West 57th Street, New  York, New
       York 10019.


                                ADDITIONAL INFORMATION

          The Company has  filed with the Securities and  Exchange Commission,
       Washington, D.C.,  a  Registration  Statement on  Form  S-3  under  the
       Securities Act  of 1933,  as amended,  covering the  securities offered
       hereby.  For  further information with  respect to the Company  and the
       securities offered  hereby,  reference  is  made  to  the  Registration
       Statement and to  the exhibits filed as part thereof.  Such information
       is available for inspection at  the Public Reference Section maintained
       by  the Commission at 450  Fifth Street, N.W.,  Washington, D.C. 20549.
       Copies  of the materials contained in the Registration Statement may be
       obtained from the Commission upon payment of the fees prescribed by its
       rules and regulations.   Statements contained in this Prospectus  as to
       the contents  of any  contract or  other document  referred to are  not
       necessarily complete.  In each instance,  reference is made to the copy
       of  such  contract  or  other  document  filed  as an  exhibit  to  the
       Registration Statement,  each such  statement  being qualified  in  all
       respects by such reference.

                                         -12-

       <PAGE>

       =======================================================================

                                  TABLE OF CONTENTS

                                                                              
                                                                      Page
                                                                      ----

       Available Information . . . . . . . . . . . . . . . . . . . .   2

       Incorporation of Certain Information
         by Reference. . . . . . . . . . . . . . . . . . . . . . . .   2

       The Company . . . . . . . . . . . . . . . . . . . . . . . . .   3

       Risk Factors . . . . . . . . . . . . . .  . . . . . . . . . .   7
       
       Use of Proceeds . . . . . . . . . . . . . . . . . . . . . . .  10

       Description of Securities. . . . . . . . .  . . . . . . . . .  10

       Plan of Distribution. . . . . . . . . . . . . . . . . . . . .  12

       Experts . . . . . . . . . . . . . . . . . . . . . . . . . . .  12

       Legal Matters . . . . . . . . . . . . . . . . . . . . . . . .  12

       Additional Information. . . . . . . . . . . . . . . . . . . .  12

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


          No dealer, salesman, or any other person has been authorized to give
       any information or to make any representations or projections of future
       performance other than those contained in this Prospectus, and any such
       other  information, projections,  or representations  if given  or made
       must not be relied upon  as having been so authorized.  The delivery of
       this Prospectus or any sale  hereunder at any time does not  imply that
       the information  herein is  correct as of  any time  subsequent to  its
       date.   This  Prospectus does  not  constitute an  offer to  sell or  a
       solicitation  of any offer to buy any  of the securities offered hereby
       in  any jurisdiction to any person to  whom it is unlawful to make such
       offer or solicitation.

       ======================================================================


                                     ADVANCED NMR
                                    SYSTEMS, INC.





                           2,331,722 shares of Common Stock
                              Issuable Upon Exercise of
                           2,331,722 Common Stock Purchase
                                       Warrants





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

                                      PROSPECTUS

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



                                    ________, 1995


       =======================================================================

       <PAGE>
       
                                       PART II
                        INFORMATION NOT REQUIRED IN PROSPECTUS


       Item 14.  Other Expenses of Issuance and Distribution

          The expenses  payable  by  the Registrant  in  connection  with  the
       issuance  and distribution  of the  securities being  registered (other
       than  underwriting discounts and  commissions) are  estimated to  be as
       follows:

                 Registration Fees . . . . . . . .     $ 3,015.16
                 Accounting Fees and Expenses  . .       1,000.00
                 Legal Fees and Expenses . . . . .      17,500.00
                 Miscellaneous . . . . . . . . . .       8,484.84
                                                       ----------
                 Total Expenses  . . . . . . . . .     $30,000.00

       Item 15.  Indemnification of Officers and Directors

          Section  145  of  the  Delaware  General  Corporation  Law  ("DGCL")
       permits indemnification of officers, directors, employees and agents in
       certain circumstances.   Section 145  also provides that  a corporation
       may maintain insurance against liabilities for which indemnification is
       not expressly provided by statute.

          Article Seventh of  Advanced NMR's Certificate of  Incorporation, as
       amended (the "Advanced NMR Articles"), provides for indemnification  of
       the  directors, officers, employees and  agents of Advanced  NMR to the
       full extent then permitted by the DGCL.

          Article V  of  Advanced  NMR's  Amended and  Restated  By-Laws  (the
       "Advanced NMR By-Laws") provides for indemnification by Advanced NMR of
       any person (and  the heirs  and legal representatives  of such  person)
       made or  threatened to  be made  a party to  any threatened  pending or
       completed claim, action, suit or proceeding, by reason of the fact that
       he is or was a director, officer, employee or agent of Advanced  NMR or
       any constituent corporation absorbed  in a consolidation or merger,  or
       serves or served with another corporation, partnership, joint  venture,
       trust or  other enterprise at the  request of Advanced NMR  or any such
       constituent corporation.  Article V permits Advanced NMR to provide any
       of  the  above described  persons  advances  for  expenses incurred  in
       defending  any  such action,  suit or  proceeding,  upon receipt  of an
       undertaking  to  repay  such   advances  if  he  is  not   entitled  to
       indemnification.  Article V  limits the personal liability of  any such
       person to the  fullest extent permitted  by the DGCL.   Article V  also
       provides  that Advanced NMR may purchase and maintain insurance, at its
       expense,  on behalf of  any person who  is or was  a director, officer,
       employee or agent of Advanced NMR, or  is or was serving at the request
       of  Advanced  NMR in  such capacity  for  another corporation  or other
       enterprise.

          Under the Merger  Agreement, Advanced  NMR has agreed  that, to  the
       fullest  extent permitted  by the  DGCL, from  and after  the Effective
       Time,  Advanced NMR  shall  indemnify,  defend  and hold  harmless  the
       present and former officers, directors  and employees of MDI or  any of
       its  subsidiaries  (the  "Indemnified  Parties")  against  all  losses,
       claims, damages, costs, expenses, liabilities, or, with the approval of
       Advanced  NMR, amounts paid in settlement in connection with any claim,
       action, suit, proceeding or investigation which is in whole or  in part
       based  on, or  arising out of  the fact  that such  person is or  was a
       director,  officer  or  employee of  MDI  or  any  of its  subsidiaries
       ("Indemnified  Liabilities"),  pertaining  to any  matter  existing  or
       occurring  at  or  prior to  the  Effective  Time  and all  Indemnified
       Liabilities which are  in whole or in part based on, or arising out of,
       or pertaining to the Merger Agreement or the  transactions contemplated
       thereby,  except for a claim arising or based upon the gross negligence
       or willful misconduct of the Indemnified Party.  Also, for  a period of
       six years  from the Effective  Time the  Advanced NMR Articles  and the
       Advanced NMR  By-Laws shall contain indemnification  provisions no less
       favorable than those set forth in the MDI Articles and the MDI By-Laws.


                                         II-1

       <PAGE>

          In  addition, under  the Merger  Agreement Advanced  NMR has  agreed
       that  it will maintain  for a period  of six years  after the Effective
       Time  the  current  policies  of  directors'  and  officers'  liability
       insurance  maintained by  MDI  to the  extent  that such  policies  are
       available at  a cost of not  greater than two times  the current annual
       amount paid  by MDI (the "Cap")  so that if comparable  coverage can be
       obtained  only by  paying  an  annual premium  in  excess of  the  Cap,
       Advanced NMR shall only be  required to obtain as much coverage  as can
       be obtained by paying an annual premium equal to the Cap.  

       Item 16.  Exhibits

          The   Exhibits  listed  below  either  are  incorporated  herein  by
       reference or filed herewith.

       Exhibit No.                   Description
       -----------                   -----------
          2                Agreement  and  Plan of  Merger among  Advanced NMR
                           Systems,  Inc.  ("Advanced NMR"),  ANMR Acquisition
                           Corp. and Medical Diagnostics, Inc.  ("MDI"), dated
                           May 2, 1995 (incorporated by reference to Exhibit 2
                           filed with Advanced NMR's Registration Statement on
                           Form S-4, and amendment thereto, declared effective
                           on   August  3,  1995  (File  No.  33-95320)  ("S-4
                           Registration Statement")).

          4.1.1            Warrant Agreement between Advanced NMR and American
                           Stock Transfer  & Trust Company, as  Warrant Agent,
                           relating  to  the  Common  Stock  Purchase Warrants
                           (incorporated by reference to  Exhibit 4.1.1 to the
                           S-4 Registration Statement).

          4.1.2            Warrant Certificate (incorporated  by reference  to
                           Exhibit 2.1 filed  with Advanced NMR's Registration
                           Statement  on Form  8-A, declared  effective August
                           31, 1995).

          4.2              Specimen  Certificate for  Common Stock,  par value
                           $.01 per share,  of Advanced  NMR (incorporated  by
                           reference to  Exhibit 4.2  to the S-4  Registration
                           Statement).

          4.3.1            Form of Supplemental Agreement relating to Advanced
                           NMR's assumption  of  MDI's Obligations  under  the
                           Warrant  Agreement between  MDI  and  First  Albany
                           Corporation and Janney Montgomery Scott, Inc. dated
                           as of  February 5, 1992 (incorporated  by reference
                           to   Exhibit   4.3.1   of   the   S-4  Registration
                           Statement).

          4.3.2            Form of Supplemental Agreement relating to Advanced
                           NMR's  assumption  of MDI's  Obligations  under the
                           Warrant Agreement between MDI and Jacob  Agam dated
                           as of February 12,  1992 (incorporated by reference
                           to   Exhibit  4.3.2   of   the   S-4   Registration
                           Statement).

          4.4              Form of  Warrant Certificate, dated as  of March 6,
                           1994, issued  to Dominick &  Dominick, Incorporated
                           (incorporated by reference to Exhibit 4.4 of the S-
                           4 Registration Statement).

          5*               Opinion  of Reid & Priest LLP as to the legality of
                           the  Advanced NMR  Common  Stock  being  registered
                           hereunder.

          23.1*            Consent  of  Richard  A.  Eisner  &  Company,  LLP,
                           independent public accountants for Advanced NMR.

          23.2*            Consent  of Arthur Andersen LLP, independent public
                           accountants for MDI.

          23.3*            Consent of Reid & Priest, LLP (included in  Exhibit
                           5).

       ----------------
       *  Filed herewith.

                                         II-2

       <PAGE>

       Exhibit No.                   Description
       -----------                   -----------

          24*              Power(s) of Attorney (included on signature page of
                           this Registration Statement on Form S-3).


       Item 17.  Undertakings

            The Registrant hereby undertakes: 

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

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

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

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

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

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

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

            (5)  To deliver or  cause to be delivered with the  prospectus, to
       each person to whom the prospectus is sent or given,  the latest annual
       report,  to security holders that  is incorporated by  reference in the
       prospectus and  furnished pursuant to  and meeting the  requirements of
       Rule 14a-3 or  Rule 14c-3 under  the Securities  Exchange Act of  1934;
       and, where  interim financial information  required to be  presented by
       Article 3  or Regulation S-X  is not  set forth in  the prospectus,  to
       deliver, or cause to be delivered to each person to whom the prospectus
       is  sent or  given, the  latest quarterly  report that  is specifically
       incorporated  by reference in  the prospectus  to provide  such interim
       financial information.

            Insofar  as  indemnification  for liabilities  arising  under  the
       Securities Act of  1933 may  be permitted to  directors, officers,  and
       controlling  persons  of  the  Registrant  pursuant  to  the  foregoing
       provisions, or otherwise, the  Registrant has been advised that  in the
       opinion of the Securities and Exchange Commission such  indemnification
       is  against public policy  as expressed in  the Act and  is, therefore,
       unenforceable.  In the  event that a claim for  indemnification against
       such  liabilities (other than the payment by the Registrant of expenses
       incurred or paid  by a director, officer, or controlling  person of the
       Registrant  in  the   successful  defense  of  any   action,  suit,  or
       proceeding)  is  asserted by  such  director,  officer, or  controlling
       person in connection with the securities being 

                                         II-3

       <PAGE>

       registered, the Registrant will,  unless in the opinion of  its counsel
       the matter has been settled by controlling precedent, submit to a court
       of appropriate  jurisdiction the question whether  such indemnification
       by it  is against public policy  as expressed in the  Securities Act of
       1933 and will be governed by the final adjudication of such issue. 
       
                                         II-4

       <PAGE>

                                      SIGNATURES

          Pursuant  to the  requirements of  the  Securities  Act of  1933, the
       registrant  certifies that it has reasonable grounds to believe that it
       meets  all of  the requirements  for filing  on Form  S-3 and  has duly
       caused this  Registration Statement to  be signed on its  behalf by the
       undersigned, thereunto  duly authorized,  in  the City  of  Wilmington,
       State of Massachusetts, on the 14th day of September, 1995.

                                    ADVANCED NMR SYSTEMS, INC.


                                    By: /s/ Jack Nelson 
                                        -------------------------------------
                                       Jack Nelson, Chairman of the Board and
                                          Chief Executive Officer


                                  POWER OF ATTORNEY

          We,  the undersigned officers and directors of  Advanced NMR Systems,
       Inc., hereby  severally constitute  Jack Nelson  and Charles  Moche and
       each of them singly, our  true and lawful attorneys with full  power to
       them, and each of them  singly, to sign for us and in our  names in the
       capacities  indicated below the  Registration Statement  filed herewith
       and  any  and  all  amendments  to  said  Registration  Statement,  and
       generally  to do  all  such  things  in  our name  and  behalf  in  our
       capacities as  officers and directors  to enable Advanced  NMR Systems,
       Inc. to  comply with the provisions  of the Securities Act  of 1933, as
       amended,  and  all   requirements  of  the   Securities  and   Exchange
       Commission, hereby ratifying and confirming  our signatures as they may
       be signed by our said  attorneys, or any of them, to  said Registration
       Statement and any and all amendments thereto.

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


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

       /s/ Jack Nelson             Chairman of the Board    September 14, 1995
       -----------------------     (Principal Executive 
          Jack Nelson              Officer)


       /s/ Robert S. Spira         Vice Chairman of the     September 14, 1995
       -----------------------     Board
          Robert S. Spira


       /s/ Charles Moche           Chief Financial          September 14, 1995
       -----------------------     Accounting Officer
          Charles Moche            (Principal Financial
                                   and Accounting Officer)
            
       /s/ George Aaron            Director                 September 14, 1995
       -----------------------
          George Aaron


                                   Director
       -----------------------
          Edward J. Connors


                                   Director
       -----------------------
          Milton L. Glass


       /s/ Enrique Levy            Director                 September 14, 1995
       -----------------------
          Enrique Levy


       /s/ John A. Lynch           Director                 September 14, 1995
       -----------------------
          John A. Lynch



                                   Director
       -----------------------
          George A. Silver


       /s/ Leonard A. Toboroff     Director                 September 14, 1995
       -----------------------
          Leonard A. Toboroff


       /s/ Sol Triebwasser         Director                 September 14, 1995
       -----------------------
          Sol Triebwasser

                                         II-5

       <PAGE>

                                  INDEX TO EXHIBITS


       Exhibit No.              Description
       -----------              -----------

          5           Opinion of Reid & Priest LLP  as to the legality of  the
                      Advanced NMR Common Stock being registered hereunder.

         23.1         Consent of Richard A. Eisner & Company, LLP, independent
                      public accountants for Advanced NMR.

         23.2         Consent  of  Arthur  Andersen  LLP,  independent  public
                      accountants for MDI.

         23.3         Consent of Reid & Priest, LLP (included in Exhibit 5).
            
         24           Power(s) of Attorney (included on signature page of this
                      Registration Statement on Form S-4.)
         



                                  REID & PRIEST LLP
                 A New York Registered Limited Liability Partnership
                                 40 West 57th Street
                               New York, NY  10019-4097
                               Telephone  212 603-2000
                                  Fax  212 603-2298


                                                                 Exhibit 5


                                                            (212) 603-6780



                                             New York, New York
                                             September 12, 1995


          Advanced NMR Systems, Inc.
          46 Jonspin Road
          Wilmington, MA  01887


          Gentlemen:

                    We have acted as counsel to Advanced NMR Systems, Inc.,
          a Delaware corporation ("Advanced NMR"), in connection with the
          preparation of a Registration Statement on Form S-3 (the
          "Registration Statement") under the Securities Act of 1933, as
          amended (the "Securities Act"), relating to the registration of
          2,331,722 shares of Advanced NMR Common Stock, issuable upon
          exercise of up to 2,331,722 Advanced NMR Common Stock Purchase
          Warrants (the "Advanced NMR Warrants").

                    This opinion is being rendered in connection with the
          filing by Advanced NMR of the Registration Statement.

                    The Advanced NMR Warrants were issued under a Warrant
          Agreement, dated as of August 31, 1995, between Advanced NMR and
          American Stock Transfer & Trust Company, as Warrant Agent (the
          "Warrant Agreement").

                    For purposes of this opinion, we have examined
          originals or copies, certified or otherwise identified to our
          satisfaction, of (i) the Registration Statement; (ii) the Warrant
          Agreement; (iii) the form of Warrant Certificate; (iv) the
          Certificate of Incorporation and By-Laws of Advanced NMR, as in
          effect on the date hereof; (v) resolutions adopted by the Board
          of Directors of Advanced NMR relating to the approval of the
          Warrant Agreement and the issuance and delivery of the Advanced
          NMR Warrants; and (vi) such other documents, certificates or
          other records as we have deemed necessary or appropriate.

                    Based upon the foregoing, and subject to the
          qualifications hereinafter expressed, we are of the opinion that:

                    (1)  Advanced NMR is a corporation duly organized,
                         validly existing and in good standing under the
                         laws of the State of Delaware.

                    (2)  The Board of Directors of Advanced NMR has taken
                         such action as may be necessary to authorize the
                         Warrant Agreement and the issuance and delivery of
                         the Advanced NMR Warrants in connection therewith.

                    (3)  The shares of Advanced NMR Common Stock included
                         in the Registration Statement to be issued upon
                         the exercise of the Advanced NMR Warrants will be
                         duly authorized and validly issued, and fully paid
                         and non-assessable when (i) the Registration
                         Statement shall have become effective under the
                         Act and (ii) the Advanced NMR Warrants shall have
                         been properly exercised and the exercise price
                         shall have been paid for in accordance with the
                         terms of the Warrant Agreement.

                    We are members of the Bar of the State of New York and
          do not hold ourselves out as experts concerning, or qualified to
          render opinions with respect to any laws other than the laws of
          the State of New York, the Federal laws of the United States and
          the General Corporation Law of the State of Delaware.

                    We hereby consent to the reference to this firm under
          the caption "Legal Matters" in the Prospectus and to filing of
          this opinion with the Securities and Exchange Commission as
          Exhibit 5 to the Registration Statement.  In giving the 
          foregoing consent, we do not thereby admit that we are in the
          category of persons whose consent is required under Section 7 
          of the Securities Act, or the rules and regulations of the 
          Securities and Exchange Commission thereunder.

                                                  Very truly yours,

                                                  /s/ Reid & Priest LLP

                                                  REID & PRIEST LLP




                                                           EXHIBIT 23.1



                            INDEPENDENT AUDITORS' CONSENT
                            -----------------------------

                    We consent to the incorporation by reference in this
          Registration Statement on Form S-3 of Advanced NMR Systems, Inc.
          (the "Company") of our report dated March 10, 1995 on the
          consolidated financial statements of the Company as of December
          31, 1994 and 1993 and for each of the years in the three-year
          period ended December 31, 1994 appearing in the Company's Annual
          Report on Form 10-K for the year ended December 31, 1994.  We
          also consent to the reference to our firm under the caption
          "Experts" included in the Registration Statement.

          
          /s/ Richard A. Eisner & Company, LLP

          Richard A. Eisner & Company, LLP

          Cambridge, Massachusetts
          September 6, 1995




                                                            EXHIBIT 23.2


                         [Letterhead of Arthur Andersen LLP]



                      Consent of Independent Public Accountants
                      -----------------------------------------


               As independent public accountants, we hereby consent to the
          incorporation by reference in this Registration Statement on Form
          S-3 of our reports dated November 16, 1994 (except with respect
          to matters discussed in Note 12, as to which the date is January
          9, 1995) on the consolidated financial statements of Medical
          Diagnostics, Inc. and its subsidiaries as of September 30, 1994
          and 1993 and for each of the three fiscal years ended September
          30, 1994 which are included in the Joint Proxy Statement of
          Advanced NMR Systems, Inc. and Medical Diagnostics, Inc. dated
          August 3, 1995 which is incorporated by reference into this
          Registration Statement.

               We also consent to the reference to us under the heading
          "experts" in such Prospectus.


                                             /s/ Arthur Andersen LLP

                                             ARTHUR ANDERSEN LLP


          Boston, Massachusetts
          September 7, 1995




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