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ACUSON CORPORATION                                                 EXHIBIT 10.15
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                              ACUSON CORPORATION

                        SUPPLEMENTAL STOCK OPTION TERMS

     Acuson Corporation (the "Company"), pursuant to its 1991 Stock Incentive
Plan (the "Plan"), has this day granted to you, the optionee named on the Notice
of Grant of Stock Options and Grant Agreement to which these Supplemental Stock
Option Terms are attached (the "Agreement"), an option to purchase shares of the
common stock of the Company ("Common Stock"). This option is not intended to
qualify as an "incentive stock option" within the meaning of Section 422 of the
Internal Revenue Code of 1986, as amended (the "Code"). Whenever used herein,
"this option" refers to the Agreement together with these Supplemental Stock
Option Terms.

     The details of your option are as follows:

1.  The total number of shares subject to this option is set forth in the
Agreement. Subject to the limitations contained herein, this option shall be
exercisable with respect to each installment shown below on or after the date of
vesting applicable to such installment, as follows:

     (a)  Except as otherwise provided in this paragraph 1, commencing on the
date specified as the "Beginning Vesting Date" in the Agreement, shares shall be
allocated to this option, and shall vest and become exercisable, in four
installments, as follows: twenty percent (20%) on the first anniversary of the
Beginning Vesting Date, twenty percent (20%) on the second anniversary of such
date, thirty percent (30%) on the third anniversary of such date, and the
remaining thirty percent (30%) on the fourth anniversary of such date. The
shares subject to this option shall be allocated, and shall vest and become
exercisable, in accordance with the preceding sentence only until the earlier of
(i) the date on which all such shares have been allocated hereto or (ii) the
date of termination of your employment or relationship as a consultant or
director with the Company or an affiliate of the Company (as defined in the
Plan) for any reason or no reason, including your death or disability. You shall
have no right to exercise this option as to any share until such share has been
allocated hereto and has vested, and you shall have no right to exercise this
option as to any fractional share. Fractional shares, if any, included in an
installment shall not vest before such time as additional fractional shares, or
portions thereof, included in other installments allocated to this option can be
combined with the existing fractional share to constitute one or more whole
shares.

     (b)  Notwithstanding anything to the contrary contained in this paragraph
1, the total number of shares subject to this option shall be allocated hereto
and shall vest fully, automatically and without any further action by the
parties hereto on the twenty-second day after any Share Acquisition Date, unless
prior to such twenty-second day a majority of the Continuing Directors then in
office has determined that the transaction pursuant to which a Person has become
an Acquiring Person is an Approved Transaction.

     (c)  For purposes of paragraph 1(b), the following definitions shall apply:
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Acuson Corporation
Supplemental Stock Option Terms

          "Acquiring Person" means any Person who or which, together with all
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     Affiliates and Associates of such Person, shall be the Beneficial Owner of
     20% or more of the Common Stock then outstanding, but shall not include the
     Company, any Subsidiary of the Company or any employee benefit plan of the
     Company or any Subsidiary of the Company, or any entity holding Common
     Stock for or pursuant to the terms of any such plan. Notwithstanding the
     foregoing, no Person shall become an Acquiring Person as the result of an
     acquisition of Common Stock by the Company which, by reducing the number of
     shares outstanding, increases the proportionate number of shares
     beneficially owned by such Person to 20% or more of the Common Stock of the
     Company then outstanding; provided, however, that if a Person becomes the
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     Beneficial Owner of 20% or more of the Common Stock of the Company then
     outstanding by reason of share purchases by the Company and shall, after
     such share purchases by the Company, become the Beneficial Owner of any
     additional Common Stock of the Company, then such Person shall be deemed to
     be an Acquiring Person.

          "Affiliate" and "Associate" have the respective meanings ascribed to
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     such terms in Rule 12b-2 of the General Rules and Regulations under the
     Exchange Act, as in effect on the date of this grant.

          "Approved Transaction" means any transaction that occurs at a time
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     when Continuing Directors are in office and a majority of the Continuing
     Directors then in office has determined that the transaction is in the best
     interest of the Company and its stockholders.

          A Person shall be deemed the "Beneficial Owner" of and shall be deemed
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     to "beneficially own" any securities: (i) which such Person or any of such
     Person's Affiliates or Associates beneficially owns, directly or
     indirectly; (ii) which such Person or any of such Person's Affiliates or
     Associates has (A) the right to acquire (whether such right is exercisable
     immediately or only after the passage of time) pursuant to any agreement,
     arrangement or understanding, or upon the exercise of conversion rights,
     exchange rights, rights (other than the Rights), warrants or options, or
     otherwise; provided, however, that a Person shall not be deemed the
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     Beneficial Owner of, or to beneficially own, securities tendered pursuant
     to a tender or exchange offer made by or on behalf of such Person or any of
     such Person's Affiliates or Associates until such tendered securities are
     accepted for purchase or exchange; or (B) the right to vote pursuant to any
     agreement, arrangement or understanding; provided, however, that a Person
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     shall not be deemed the Beneficial Owner of, or to beneficially own, any
     security if the agreement, arrangement or understanding to vote such
     security (1) arises solely from a revocable proxy or consent given to such
     person in response to a public proxy or consent solicitation made pursuant
     to, and in accordance with, the applicable rules and regulations of the
     Exchange Act and (2) is not also then reportable on Schedule 13D under the
     Exchange Act (or any comparable or successor report), or (iii) which are
     beneficially owned, directly or indirectly, by any other Person with which
     such Person or any of such Person's Affiliates or Associates has any
     agreement, arrangement or understanding for the purpose of acquiring,
     holding, voting (except to the extent contemplated by the proviso to clause
     (ii) (B) of this definition) or disposing of any securities of the Company;
     provided further, however, that nothing in this paragraph shall
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Acuson Corporation
Supplemental Stock Option Terms


          cause a Person to be the Beneficial Owner of, or to beneficially own,
          any securities (x) acquired through such Person's participation in the
          business of underwriting securities in good faith in a firm commitment
          underwriting until the expiration of forty days after the date of such
          acquisition or (y) which such Person has reported on Schedule 13G
          under the Exchange Act and has not ceased to be eligible to report on
          Schedule 13G pursuant to Rule 13d-1 under the Exchange Act.

               "Common Stock" means the shares of common stock, par value $.0001
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          per share, of the Company.

               "Continuing Director" means (i) any member of the Board of
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          Directors of the Company, while such Person is a member of the Board,
          who is not an Acquiring Person, or an Affiliate or Associate of an
          Acquiring Person, or a representative of an Acquiring Person or of any
          such Affiliate or Associate, and who was, if applicable, a member of
          the Board prior to the time that any Person becomes an Acquiring
          Person, or (ii) any Person who subsequently becomes a member of the
          Board, while such Person is a member of the Board who is not an
          Acquiring Person, or an Affiliate or Associate of an Acquiring Person
          or a representative of an Acquiring Person or of any such Affiliate or
          Associate, if such Person's nomination for election or election to the
          Board is recommended or approved by a majority of Continuing
          Directors.

               "Exchange Act" means the Securities Exchange Act of 1934, as
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          amended, and the rules and regulations promulgated thereunder.

               "Person" means any individual, firm, partnership, corporation or
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          other entity, and shall include any successor (by merger or
          otherwise) of such entity.

               "Rights" means the rights granted to the Company's shareholders
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          to purchase additional Common Stock under certain circumstances, as
          described in that certain Rights Agreement, dated as of May 5, 1988,
          by and between the Company and The First National Bank of Boston, as
          rights agent.

               "Share Acquisition Date" means the first date of public
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          announcement by the Company or an Acquiring Person that a Person has
          become an Acquiring Person.

               "Subsidiary" of any Person means any corporation or other entity
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          of which a majority of the voting power of the voting equity
          securities or equity interest is owned, directly or indirectly, by
          such Person, or which is otherwise controlled by such Person.

2.  (a)   The exercise price per share of this option is set forth in the
Agreement, being not less than ten percent (10%) of the fair market value of the
Common Stock on the date of grant of this option.

     (b)  The purchase price of stock acquired pursuant to this option shall be
paid at the time of exercise, to the extent permitted by applicable statutes and
regulations, by (i) personal check, certified check, bank draft, or postal money
order payable to the order of Acuson Corporation in lawful money of the United
States (collectively, "Cash Consideration");

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Acuson Corporation
Supplemental Stock Option Terms


(ii) delivery on a form prescribed by the Company of an irrevocable direction to
a securities broker approved by the Company to sell shares of common stock of
the Company and deliver all or a portion of the proceeds to the Company in
payment for the stock issuable upon exercise of this option; (iii) surrender to
the Company of shares of common stock of the Company (or delivery of a properly
executed form of attestation of ownership of shares of common stock of the
Company) that have been held for the requisite period necessary to avoid a
charge to the Company's reported earnings and valued at the fair market value on
the date of exercise (determined by the closing sale price per share of common
stock of the Company for such date); or (iv) in any combination of the
foregoing.

3.   The minimum number of shares with respect to which this option may be
exercised at any one time is ten (10), except as to an installment subject to
exercise, as set forth in paragraph 1, which amounts to fewer than ten (10)
shares, in which case, as to the exercise of that installment, the number of
such shares in such installment shall be the minimum number of shares. In no
event may this option be exercised for any number of shares which would require
the issuance of anything other than whole shares.

4.   Notwithstanding anything to the contrary contained herein, this option may
not be exercised unless the shares issuable upon exercise of this option are
then registered under the Securities Act of 1933, as amended (the "Securities
Act"), or, if such shares are not then so registered, the Company has determined
that such exercise and issuance would be exempt from the registration
requirements of the Securities Act.

5.   The term of this option commences on the grant date as set forth in the
Agreement and, unless sooner terminated as set forth below or in the Plan,
terminates on the date set forth in the Agreement (which date shall be no more
than ten (10) years from the date this option is granted). In no event may this
option be exercised on or after the date on which it terminates. This option
shall terminate prior to the expiration of its term as follows: three (3) months
after the termination of your employment or relationship as a consultant or
director with the Company or an affiliate of the Company (as defined in the
Plan) for any reason or for no reason unless:

          (a)  such termination of employment or relationship as a consultant or
director is due to your permanent and total disability (within the meaning of
Section 422(c)(6) of the Code), in which event the option shall terminate on the
earlier of the termination date set forth above or one (1) year following such
termination of employment or relationship as a consultant or director; or

          (b)  such termination of employment or relationship as a consultant or
a director is due to your death, or your death occurs within three (3) months
after such termination of employment or relationship as a consultant or
director, in which event the option shall terminate on the earlier of the
termination date set forth above or eighteen (18) months after your death; or

          (c)  during any part of such three (3) month period the option is not
exercisable solely because of the condition set forth in paragraph 4 above, in
which event the option shall not terminate until the earlier of the termination
date set forth above or until it shall have been exercisable for an aggregate
period of three (3) months after the termination of your employment or
relationship as a consultant or a director; or

          (d)  exercise of the option within three (3) months after termination
of your employment or relationship as a consultant or a director with the
Company or with an affiliate of

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Acuson Corporation
Supplemental Stock Option Terms

the Company (as defined in the Plan) would result in liability under section
16(b) of the Securities Exchange Act of 1934, in which case the option will
terminate on the earlier of (i) the termination date set forth above, (ii) the
tenth (10th) day after the last date upon which exercise would result in such
liability, or (iii) six (6) months and ten (10) days after the termination of
your employment or relationship as a consultant or a director with the Company
or an affiliate of the Company (as defined in the Plan).

          However, this option may be exercised following termination of your
employment or relationship as a consultant or a director only as to that number
of shares as to which it was exercisable on the date of your termination of
employment or relationship as a consultant or a director under the provisions of
paragraph 1 of this option.

6.  (a)   This option may be exercised, to the extent specified above, by
delivering a notice of exercise together with the exercise price to the
Secretary of the Company, or to such other person as the Company may designate,
during regular business hours, together with such additional documents as the
Company may then require pursuant to subparagraph 6(f) of the Plan.

          (b)  By exercising this option you agree that the Company may require
you to enter into an arrangement providing for the cash payment by you to the
Company of any tax withholding obligation of the Company arising by reason of
(i) the exercise of this option, (ii) the lapse of any substantial risk of
forfeiture to which the shares are subject at the time of exercise, or (iii) the
disposition of shares acquired upon such exercise.

7.   This option is not transferable, except by will or by the laws of descent
and distribution, and is exercisable during your life only by you.

8.   This option is not an employment contract, and nothing in this option shall
confer upon any eligible employee or consultant or director any right to
continue in the employ (or to continue acting as a consultant or director) of
the Company or any affiliate of the Company (as defined in the Plan) or shall
affect the right of the Company or any affiliate of the Company (as defined in
the Plan) to terminate the employment or consulting relationship or directorship
of any eligible employee or consultant or director with or without cause.

9.   Any notices provided for in this option or the Plan shall be given in
writing and shall be deemed effectively given upon receipt or, in the case of
notices delivered by the Company to you, five (5) days after deposit in the
United States mail, postage prepaid, addressed to you at the address specified
in the Company's records or at such other address as you may designate by
written notice to the Company.

10.  This option is subject to all the provisions of the Plan, a copy of which
is attached hereto, and its provisions are hereby made a part of this option,
including without limitation the provisions of paragraph 6 of the Plan relating
to option provisions, and is further subject to all interpretations, amendments,
rules, and regulations which may from time to time be promulgated and adopted
pursuant to the Plan. In the event of any conflict between the provisions of
this option and those of the Plan, the provisions of the Plan shall control.

          This option is dated and effective as of the date of grant as set
forth in the Agreement.

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