Exhibit 4.17


B E T W E E N :


                             CEDARA SOFTWARE CORP.

                                               (the "Corporation" or "Cedara")

                                     -and-

                     SURGICAL NAVIGATION SPECIALISTS INC.

                                                                       ("SNS")

                                     -and-

            SNS SURGICAL NAVIGATION SPECIALISTS INTERNATIONAL GmbH

                                                         ("SNS International")
                                     -and-

                               CARL ZEISS, INC.

                                                                ("Zeiss U.S.")

                                    - and -

                             CARL ZEISS OBERKOCHEN

                                                                    ("Zeiss" )

                             MINUTES OF SETTLEMENT

         WHEREAS the parties acknowledge that certain financial and other
contractual obligations and liabilities exist as between Zeiss U.S., Zeiss and
their respective affiliates (collectively, the "Zeiss Entities") on the one
hand and the Corporation and its direct and indirect subsidiaries
(collectively, the "Cedara Entities") on the other hand which include, without
limitation, obligations and liabilities arising from the purchase agreement
effective as of November 1, 2000 between the Corporation, Zeiss U.S., Zeiss,
SNS, a direct subsidiary of the Corporation and SNS International, an indirect
subsidiary of the Corporation (the "Purchase Agreement");

         AND WHEREAS the parties have a desire to: (i) settle on the amounts
owing as between to the Zeiss Entities and the Cedara Entities; (ii) amend the



terms of the 363,636 non-voting, non-transferable warrants of the Corporation
(each a "Cedara Warrant") previously issued to Zeiss U.S. and Zeiss, and (iii)
terminate certain of the outstanding and future rights, obligations and
liabilities of the parties under the Purchase Agreement;

         NOW THEREFORE the parties agree as follows:

1.   Each of Zeiss U.S. and Zeiss specifically invoke its right to offset its
     payables to SNS and SNS International against its receivables due from
     SNS and SNS International pursuant to section 21.4 of the Purchase
     Agreement, subject to applicable law.

2.   The parties agree to offset all amounts owing as between the Zeiss
     Entities and the Cedara Entities at the date hereof including, without
     limitation, offsetting all amounts owing under the Purchase Agreement
     referred to in paragraph 1 above, subject to applicable law, leaving the
     net amount to be satisfied in full as follows:

     (a)    The Corporation will pay Zeiss U.S. and/or Zeiss US $1,500,000 in
            18 equal monthly instalments beginning April 30, 2002 and ending
            September 30, 2003;

     (b)    The Corporation will provide Zeiss U.S. and/or Zeiss, at no charge
            to Zeiss U.S. and/or Zeiss, US $1,500,000 of software engineering
            services and licences, based on the Corporation's standard
            software licence rates and software engineering rates at the time
            such licences or services are provided to Zeiss U.S. and/or Zeiss.
            Software licences will be provided at any time after the effective
            date hereof upon the request of Zeiss U.S. and/or Zeiss until
            December 1, 2004. Engineering services will be provided at any
            time between the period from December 1, 2002 to December 1,


                                      2



            2004 upon the request of Zeiss U.S. and/or Zeiss. No payment will
            be made by the Corporation to Zeiss U.S. and/or Zeiss to the
            extent Zeiss U.S. and/or Zeiss does not utilize the software
            licences or engineering services provided for in this paragraph
            (b) within the time period specified herein;

            Upon completion of paragraph (b) above, the parties agree to
            negotiate in good faith the terms of an agreement under which the
            Corporation shall become the preferred software supplier for
            Ophthalmology of Zeiss U.S. and Zeiss; and

     (c)    Except for payments required hereunder, to the extent that other
            payments are made by or on behalf of any of the Cedara Entities to
            any of the Zeiss Entities after the effective date hereof which
            relate to obligations or liabilities arising on or prior to the
            effective date hereof, the Corporation shall be entitled to deduct
            such amounts from the amount payable under paragraph (a) above, or
            alternatively from the amount specified in paragraph (b) above if
            the payments exceed the balance of the amount under paragraph (a)
            or if the payments are made to Zeiss U.S. and/or Zeiss after
            September 30, 2003.

3.   The terms of the Cedara Warrants contained in Article 2 of the Purchase
     Agreement including, without limitation, page 12(a) of the Purchase
     Agreement are deleted and replaced in their entirety with the terms
     described in Schedule "A" attached hereto. The form of Warrants referred
     to in Schedule 2.4 of the Purchase Agreement shall be deemed to be
     amended to reflect such changes (the "Amended Form of Warrants").

4.   The parties agree that all outstanding and future (contingent or
     otherwise) rights, obligations and liabilities of any Zeiss Entity or
     Cedara Entity


                                      3



     under the Purchase Agreement and the schedules thereto and any guarantees
     or indemnities provided by any Zeiss Entity or Cedara Entity, including,
     without limitation, related to the SNS Call Option (as defined in the
     Purchase Agreement), are hereby terminated. Notwithstanding the
     foregoing, the parties agree that all rights, obligations and liabilities
     under the Amended Form of Warrants and Schedule 2.5 (Warrant Exercise
     Notice) and Schedule 12.2(a)(vii) (Technology and Patent License
     Agreement) other than Schedule "C" to Schedule 12.2(a)(vii) of the
     Purchase Agreement are unaffected and continue to be in full force and
     effect. The parties acknowledge and agree that nothing contained herein
     or in the Purchase Agreement prohibits or limits any Zeiss Entity to use
     or sublicence the intellectual property and patents owned by the Zeiss
     Entities which are identified or referred to in the Purchase Agreement
     including, without limitation, Schedule 12.2(a)(vii) of the Purchase
     Agreement. The parties also agree that Cedara, Zeiss and Zeiss U.S. will
     negotiate in good faith a new licence agreement (the "New Licence
     Agreement") in favour of the Cedara Entities to replace Schedule "C" to
     Schedule 12.2(a)(vii) of the Purchase Agreement, such licence to be on a
     non-exclusive royalty-free basis and on such other terms and conditions
     as they may agree.

5.   In consideration of the fulfilment of the benefits and obligations set
     out herein, each of Zeiss U.S. and Zeiss, on behalf of itself and the
     other Zeiss Entities, hereby releases and forever discharges the
     Corporation, SNS, SNS International and any of their respective
     affiliates, of and from all actions, causes of action, suits, duties,
     debts, accounts, bonds, covenants, contracts, claims and demands
     whatsoever that the Zeiss Entities, now have or hereafter can, shall or
     may have for or by reason of or in any way arising out of any cause,
     matter or thing whatsoever existing up to the


                                      4


     effective date hereof and in particular, without in any way limiting the
     generality of the foregoing, in respect of all claims under the Purchase
     Agreement and any guarantees or indemnities.

6.   In consideration of the fulfilment of the benefits and obligations set
     out herein, the Corporation on behalf of itself and its direct and
     indirect subsidiaries hereby releases and forever discharges the Zeiss
     Entities from all actions, causes of action, suits, duties, debts,
     accounts, bonds, covenants, contracts, claims and demands whatsoever that
     the Corporation or any of its direct or indirect subsidiary, now have or
     hereafter can, shall or may have for or by reason of or in any way
     arising out of any cause, matter or thing whatsoever existing up to the
     effective date hereof and in particular, without in any way limiting the
     generality of the foregoing, in respect of all claims under the Purchase
     Agreement and any guarantees or indemnities.

7.   These Minutes shall be governed by the laws of the Province of Ontario.

8.   The parties agree that these Minutes may be executed by facsimile and in
     two or more counterparts, each of which shall be deemed to be an original
     and all of which taken together shall constitute one instrument.

9.   These Minutes are subject to the following conditions being satisfied:

     (a)    Cedara and SNS signing a letter agreement with Medtronic Surgical
            Navigation Technologies ("M/SNT") related to transition of the SNS
            installed base, whether or not court approval, if required, is
            obtained subsequently to the signing of such agreement;

     (b)    Zeiss signing a letter agreement with M/SNT related to support of
            the SNS installed base;

     (c)    Approval of the board of directors of Zeiss;


                                      5


     (d)    Approval of the board of directors of Cedara;

     (e)    The execution of the New Licence Agreement; and

     (f)    Consent of the insolvency administrator appointed by Amstgericht
            Aalen (Germany) in so far as the Minutes relate to SNS
            International.

10.  The effective date of these Minutes shall be the date that all the
     conditions set out in paragraph 9 above are satisfied. In the event that
     any one of the conditions in paragraph 9 is not satisfied on or prior to
     January 15, 2002, these Minutes of Settlement will be terminated with no
     force and effect.

11.  Cedara and SNS represent to Zeiss and Zeiss U.S. that no approval of any
     court is required in connection with SNS executing these Minutes of
     Settlement and acknowledge that Zeiss and Zeiss U.S. are relying on such
     representation for purposes of entering into these Minutes of Settlement.

     DATED this 10th day of December, 2001.

                                         CEDARA SOFTWARE CORP.


                                         Per:  /s/ Michael Greenberg
                                               -----------------------------


                                         SURGICAL NAVIGATION SPECIALISTS INC.


                                         Per: /s/ Shlomit Dekel
                                              -------------------------------


                                         SNS SURGICAL NAVIGATION
                                         SPECIALISTS INTERNATIONAL GmbH


                                         Per: /s/ Joachim Luber
                                              -------------------------------


                                         CARL ZEISS, INC. for itself and on
                                         behalf of the other Zeiss Entities
                                         incorporated in the United States


                                         Per:  /s/ James Kelly
                                               -----------------------------


                                         CARL ZEISS OBERKOCHEN for itself and
                                         on behalf of the other Zeiss Entities


                                         Per:  /s/ Uli Krauss
                                               ----------------------------



                                      6


                                 SCHEDULE "A"
                         TERMS OF THE CEDARA WARRANTS

1.   Each Cedara Warrant shall be exercisable into one common share of Cedara
     (the "Cedara Common Share") for no additional consideration.

2.   Beginning on November 1, 2001, Zeiss and Zeiss U.S. have the right to
     sell up to 90,909 Cedara Common Shares received on an exercise of Cedara
     Warrants. If Zeiss and Zeiss U.S. choose to sell any such Cedara Common
     Shares between November 1, 2001 and July 31, 2004, price protection will
     not apply with respect to the exercise of any of such Cedara Warrants
     relating to the 90,909 Cedara Common Shares referred to in this
     paragraph.

3.   Beginning on November 1, 2002, Zeiss and Zeiss U.S. have the right to
     sell a further 90,909 Cedara Common Shares received on the exercise of
     Cedara Warrants. If Zeiss and Zeiss U.S. choose to sell any such Cedara
     Common Shares between November 1, 2002 and July 31, 2004, price
     protection will not apply with respect to the exercise of any of such
     Cedara Warrants relating to the 90,909 Cedara Common Shares referred to
     in this paragraph.

4.   Beginning on August 1, 2003, Zeiss and Zeiss U.S. have the right to sell
     a further 181,818 Cedara Common Shares received on the exercise of Cedara
     Warrants. To the extent that Zeiss or Zeiss U.S. have elected to exercise
     Cedara Warrants representing any of these 181,818 Cedara Common Shares on
     or after August 1, 2003 but on or prior to July 31, 2004, Cedara will
     promptly pay to Zeiss or Zeiss U.S., as the case may be, an amount by
     which the price per Cedara Common Share is trading below US $5.50 (based
     on the weighted closing price average for the 20 NASDAQ trading days,
     ending on the date immediately prior to the date of such exercise). Such
     payment, if any, may be made by Cedara, at its option, either in cash or
     in freely tradable Cedara Common Shares (which shares shall be valued on
     the basis of the weighted closing price average for the 20 NASDAQ trading
     days, ending on the date immediately prior to the date of such exercise).
     After July 31, 2004, the price protection will not apply with respect to
     the exercise of any of the Cedara Warrants relating to the 181,818 Cedara
     Common Shares referred to in this paragraph. For greater certainty, the
     maximum payment Cedara would be obliged to make on or after August 1,
     2003 but on or before July 31, 2004 would be, in the aggregate, US
     $1,000,000.

5.   To the extent that Zeiss or Zeiss U.S. elects to exercise any of the
     Cedara Warrants representing those Cedara Common Shares that are
     described in


                                      7



     Paragraphs 2 and 3 above on or after August 1, 2004 but on or prior to
     July 31, 2005, Cedara will promptly pay to Zeiss or Zeiss U.S., as the
     case may be, an amount by which the price per Cedara Common Share is
     trading below US $5.50 (based on the weighted closing price average for
     the 20 NASDAQ trading days, ending on the date immediately prior to the
     date of such exercise). Such payment, if any, may be made by Cedara, at
     its option, either in cash or in freely tradable Cedara Common Shares
     (which shares shall be valued on the basis of the weighted closing price
     average for the 20 NASDAQ trading days, ending on the date immediately
     prior to the date of such exercise). After July 31, 2005, the price
     protection will not apply with respect to the exercise of any of the
     Cedara Warrants relating to the Cedara Common Shares referred to in this
     paragraph. For greater certainty, the maximum payment Cedara would be
     obliged to make on or after August 1, 2004 but on or before July 31, 2005
     would be, in the aggregate, US $1,000,000.

6.   Sections 2.4 to 2.10 inclusive of the Purchase Agreement shall be
     unaffected and continue in full force and effect to the Cedara Warrants,
     provided that Section 2.7(1)(iii) of the Purchase Agreement and the
     references to "Section 2.19 and Section 2.20" in Section 2.10(1) and the
     "SNS Call Options" in Section 2.10(2) are deleted.


                                      8




     THIS AMENDMENT TO THE MINUTES OF SETTLEMENT is dated effective as of
January 15, 2002 between Cedara Software Corp. ("Cedara"), Surgical Navigation
Specialists Inc. ("SNS"), SNS Surgical Navigation Specialists International
GmbH ("SNS International"), Carl Zeiss, Inc. ("Zeiss U.S.") and Carl Zeiss
Oberkochen ("Zeiss").

     WHEREAS on December 10, 2001, Cedara, SNS, SNS International, Zeiss U.S.
and Zeiss (collectively referred to herein as the "Parties") entered into a
minutes of settlement (the "Minutes of Settlement");

     AND WHEREAS the Parties have agreed to extend the date by which all the
conditions set out in paragraph 9 of the Minutes of Settlement must be
satisfied in order for the Minutes of Settlement to come into effect;

     NOW THEREFORE in consideration of the mutual covenants herein contained
and for other good and valuable consideration (the receipt and sufficiency of
which are hereby acknowledged), the Parties agree as follows:

7.   Capitalized terms used in this amending agreement and not otherwise
     defined shall have the meanings set forth in the Minutes of Settlement.

8.   All the references in the Minutes of Settlement to "January 15, 2002"
     shall be deleted and replaced with "January 22, 2002".

9.   This amending agreement shall be construed and enforced in accordance
     with the laws of the Province of Ontario.

10.  Except as specifically amended by this amending agreement, the Minutes of
     Settlement shall remain in full force and effect and is hereby ratified
     and confirmed.

     IN WITNESS WHEREOF the Parties have caused this amending agreement to be
signed by their duly authorized officers.

                                         CEDARA SOFTWARE CORP.


                                         Per:  /s/ Michael Greenberg
                                               ------------------------------


                                         SURGICAL NAVIGATION SPECIALISTS INC.


                                         Per:  /s/ Michael Greenberg
                                               ------------------------------


                                         SNS SURGICAL NAVIGATION
                                         SPECIALISTS INTERNATIONAL GmbH


                                         Per:  /s/ Joachim Luber
                                               -----------------------------

                                         CARL ZEISS, INC. for itself and on
                                         behalf of the other Zeiss Entities
                                         incorporated in the United States


                                         Per: /s/ James Kelly
                                              ------------------------------


                                         CARL ZEISS OBERKOCHEN for itself and
                                         on behalf of the other Zeiss Entities


                                         Per:  /s/ Uli Krauss
                                               ------------------------------

                                         Per:  /s/ Karl-Heinz Raffin
                                               ------------------------------






     THIS SECOND AMENDMENT TO THE MINUTES OF SETTLEMENT is dated effective as
of September 23, 2003 among Cedara Software Corp. ("Cedara"), Carl Zeiss, Inc.
("Zeiss U.S.") and Carl Zeiss Oberkochen ("Zeiss").

     WHEREAS on December 10, 2001, Cedara, SNS, SNS International, Zeiss U.S.
and Zeiss (collectively referred to herein as the "Parties") entered into a
minutes of settlement, as amended by an amendment dated January 15, 2002
(collectively, the "Minutes of Settlement");

     AND WHEREAS the Parties have agreed to extend the expiry date of the
price protection mechanism provided for in Schedule "A" to the Minutes of
Settlement which contains certain amendments to the terms of Cedara Warrants
issued by Cedara to Zeiss, subject to obtaining regulatory approval;

     NOW THEREFORE in consideration of the mutual covenants herein contained
and for other good and valuable consideration (the receipt and sufficiency of
which are hereby acknowledged), the Parties agree as follows:

11.  Capitalized terms used in this amending agreement and not otherwise
     defined shall have the meanings set forth in the Minutes of Settlement.

12.  All references in paragraph 4 in Schedule "A" of the Minutes of
     Settlement to "July 31, 2004" shall be deleted and replaced with "October
     31, 2005".

13.  All references in paragraph 5 in Schedule "A" of the Minutes of
     Settlement to "July 31, 2005" shall be deleted and replaced with "October
     31, 2005".

14.  This second amending agreement shall be construed and enforced in
     accordance with the laws of the Province of Ontario.

15.  Except as specifically amended by this second amending agreement, the
     Minutes of Settlement shall remain in full force and effect and is hereby
     ratified and confirmed.

16.  Notwithstanding any other provision of this second amending agreement,
     this second amending agreement shall only become effective on the date
     that all regulatory approvals required in connection with the matters
     contained in this second amending agreement have been obtained.

     IN WITNESS WHEREOF the Parties have caused this second amending agreement
to be signed by their duly authorized officers.


                                           CEDARA SOFTWARE CORP.


                                           Per:  /s/ Abe Schwartz
                                                 ---------------------------


                                           CARL ZEISS, INC. for itself and on
                                           behalf of the other Zeiss Entities
                                           incorporated in the United States


                                           Per:  /s/ James Kelly
                                                 ----------------------------


                                           CARL ZEISS OBERKOCHEN for itself and
                                           on behalf of the other Zeiss Entities


                                           Per:  /s/ Ludwig Munz
                                                 ----------------------------

                                           Per:  /s/ Karl-Heinz Raffin
                                                 ----------------------------