Document:

<PAGE>
Exhibit 10.4

                 SETTLEMENT AGREEMENT AND MUTUAL GENERAL RELEASE
                 -----------------------------------------------

         This Settlement Agreement and Mutual General Release (the "Agreement")
is entered into on the 10th day of August, 2001 by and among Ultra Open MRI of
St. Petersburg, Inc., Ultra Open MRI of Tampa, Inc., Ultra Open MRI Corporation,
Ultra Diagnostics, LLC (collectively, the "Subsidiaries"), Ultra Open MRI
Holding Corp. ("Ultra Holding"), Miracor Diagnostics, Inc. ("Miracor"),
Frederick J. Bergmann ("Bergmann"), MedSource Holdings, Ltd. ("MedSource"),
Jamac Enterprises, Ltd. ("Jamac"), and John McCoskrie ("McCoskrie"), all
collectively referred to as "the Parties."

         WHEREAS, Bergmann owns or controls MedSource and McCoskrie owns or
controls Jamac ;

         WHEREAS, MedSource and Jamac owned 100% of the outstanding stock in the
Subsidiaries;

         WHEREAS, Miracor desired to acquire an 80% ownership interest in the
Subsidiaries;

         WHEREAS, MedSource and Jamac formed Ultra Holding to consolidate their
ownership interest in the Subsidiaries;

         WHEREAS, on February 9, 2000, Miracor and Ultra Holding entered into an
Agreement and Plan of Merger (the "Merger Agreement") pursuant to which Miracor
acquired 80% of the outstanding stock of Ultra Holding in exchange for the
issuance of 1,267,200 shares of Miracor stock to MedSource and 1,267,200 shares
of Miracor stock to Jamac;

         WHEREAS, in connection with the Merger Agreement, Bergmann and
McCoskrie both entered into Employment Agreements with Ultra Holding dated
February 9, 2000 (the "Employment Agreements");

<PAGE>

         WHEREAS, in connection with the Merger Agreement, Bergmann and
McCoskrie both entered into Non-Competition and Confidentiality Agreements with
Ultra Holding dated February 9, 2000 (the "Non-Competition Agreements");

         WHEREAS, in connection with the Merger Agreement, MedSource and Jamac
both entered into Stock Purchase Agreements with Miracor dated February 9, 2000
(the "Stock Purchase Agreements");

         WHEREAS, in connection with the Merger Agreement, Miracor, Ultra
Holding, and John McCoskrie entered into a Security Agreement dated February 9,
2000 (the "Security Agreement");

         WHEREAS, in connection with the Non-Competition Agreement, Miracor
issued three Convertible Notes to McCoskrie maturing August 9, 2000, November 9,
2000, and November 9, 2001 (the "McCoskrie Notes");

         WHEREAS, in connection with the Non-Competition Agreement, Miracor
issued three Convertible Notes to Bergmann maturing August 9, 2000, November 9,
2000, and November 9, 2001 (the "Bergmann Notes");

         WHEREAS, in connection with the Merger Agreement, Bergmann, McCoskrie,
and MedSource entered into an Indemnification Agreement with Miracor dated
February 9, 2000 (the "Indemnification Agreement");

         WHEREAS, in connection with the merger, Miracor and Ultra Holding
entered into a letter agreement dated February 26, 2000 (the "Management
Agreement"). The Employment Agreements, Non-Competition Agreements, Stock
Purchase Agreements, McCoskrie Notes, Bergmann Notes, Indemnification Agreement,
Security Agreement, and Management Agreement are referred to herein as the
"Ancillary Agreements".

                                     Page 2
<PAGE>

         WHEREAS, disputes arose between Miracor and Bergmann and McCoskrie over
the payment of the Bergmann Notes and McCoskrie Notes and the ownership and
control of Ultra Holding and the Subsidiaries;

         WHEREAS, on or about April 25, 2001, Miracor filed suit against
Bergmann and McCoskrie in Hillsborough County, Florida in an action styled
Miracor, et al. v. Bergmann and McCoskrie, case number 01-6299 (the "Miracor
Action");

         WHEREAS, on or about May 1, 2001, Bergmann filed suit against Miracor
in Hillsborough County, Florida in an action styled Frederick J. Bergmann v.
Miracor Diagnostics, Inc., case number 01-003632 (the "Bergmann Action");

         WHEREAS, the Bergmann Action was consolidated into the Miracor Action
by Order of the Court;

         WHEREAS, the Parties desire to finally resolve their disputes and
dispose of any and all claims between the Parties;

         NOW, THEREFORE, in consideration of the mutual agreements, undertakings
and representations contained in this document and other good and valid
consideration, the receipt and sufficiency of which is hereby acknowledged by
the Parties, the Parties agree as follows:

         1. Contemporaneously herewith, Ultra Holding will pay to the trust
account of Akerman, Senterfitt the total sum of $30,000.

         2. Within thirty (30) days from the date hereof, Miracor shall deliver
to Bergmann and McCoskrie: all accounting records relating to the Ultra entities
after February, 2000, (including but not limited to financial statements, check
registers, general ledgers, accounts payable ledgers, payroll ledgers, payroll
tax returns, and bank statements); all shares of stock (the "Ultra Stock") in
Ultra Holding or the Subsidiaries issued to Miracor properly endorsed, free and

                                     Page 3
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clear of any liens or encumbrances; and all originals of corporate books and
corporate documents relating to Ultra Holding and the Subsidiaries, including,
but not limited to, Articles of Incorporation, Amended Articles of
Incorporation, Annual Reports, By-Laws, Operating Agreements, stock
certificates, stock transfer records, minutes of shareholder meetings, meetings
of director meetings, shareholder resolutions, director resolutions, and
corporate seals. As to the Ultra Stock, Miracor represents and warrants that it
has not pledged, hypothecated, sold or otherwise encumbered the Ultra Stock. As
to the Ultra Stock, Miracor agrees to execute any documents reasonably necessary
to effectuate a complete and lawful transfer of 40 shares of the Ultra Holding
Stock to MedSource and 40 shares of Ultra Holding stock to Jamac. Upon Bergmann
and McCoskrie's receipt of the foregoing, Akerman, Senterfitt shall disburse
$10,000 from its trust account to Miracor.

         3. If, within thirty (30) days from the date hereof, Bergmann and
McCoskrie are able to obtain from Toshiba America Medical Credit documentation
releasing Miracor from Miracor's corporate guaranty of a lease entered into
between Toshiba and Ultra Open MRI of St. Petersburg, then Akerman, Senterfitt
shall disburse the remaining $20,000 in its trust account to Ultra Holding. A
copy of this lease is attached hereto as Exhibit "A." If Bergmann and McCoskrie
are unable to obtain such release within such thirty (30) day period, then
Akerman, Senterfitt shall disburse the remaining $20,000 to Miracor. Bergmann
and McCoskrie represent and warrant that Exhibit "A" is the only lease
guaranteed by Miracor on behalf of Ultra Holding. Ultra Holding, the
Subsidiaries, Bergmann, and McCoskrie further represent that they have taken no
action, nor will they take any action, to effectuate any other leases or
guarantees that were signed by M. Lee Hulsebus for the benefit of Ultra Holding
or the Subsidiaries prior to March 9, 2001. Copies of two such leases are

                                     Page 4
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attached as composite Exhibit B. As to Exhibit "B," Bergmann, McCoskrie, Ultra
Holding and the Subsidiaries represent that such leases are not now in effect.
If Bergmann and McCoskrie are unsuccessful in obtaining a release for Miracor of
its obligations vis-a-vis Exhibit "A," then Bergmann, McCoskrie, Ultra Holding
and the Subsidiaries will indemnify Miracor, including attorneys' fees, and hold
Miracor harmless from any and all claims arising from, or relating to, Miracor's
guarantee of the lease. If Bergmann and McCoskrie are unsuccessful in obtaining
such release and a lease guaranteed by Miracor is in default for more than 60
days, Bergmann, McCoskrie, Ultra Holding, and the Subsidiaries will use best
efforts, in conjunction with the lessor, to assign all of their rights to the
equipment and the lease, including possession, and all paperwork concerning the
lease to Miracor.

         4. Within thirty (30) days from the date hereof, Bergmann/MedSource and
McCoskrie/Jamac will each deliver to Miracor 1,267,200 shares (collectively the
"Miracor Stock") of Miracor Restricted 144 Common Stock (for a total of
2,534,400 shares) properly endorsed, free and clear of any liens and
encumbrances. As to the Miracor Stock, Bergmann, McCoskrie, MedSource, and Jamac
represent and warrant that they have not pledged, hypothecated, sold or
otherwise encumbered the Miracor Stock. As to the Miracor Stock, Bergmann,
McCoskrie, Jamac, and MedSource agree to execute any documents reasonably
necessary to effectuate a complete and lawful transfer of the Miracor Stock to
Miracor. Bergmann and McCoskrie further represent and warrant that neither the
McCoskrie Notes, nor the Bergmann Notes, have been pledged, hypothecated, sold
assigned, or otherwise encumbered. Contemporaneous with the delivery of the
Miracor stock, Bergmann and McCoskrie will deliver the original Bergmann Notes
and McCoskrie Notes marked "paid in full" and initialed by the respective
obligee.

                                     Page 5
<PAGE>

         5. Miracor shall prepare and file Miracor's federal and state income
tax returns for the period ending December 31, 2000 and for the period January
1, 2001 through the end of the consolidation period on a consolidated basis
including Ultra Holding and the Subsidiaries and shall provide Bergmann and
McCoskrie copies of such returns within thirty (30) days from their date of
filing. Miracor shall indemnify, defend, and hold Bergmann and McCoskrie and
Ultra Holding and the Subsidiaries harmless from any tax liability associated
with all such returns. Bergmann, McCoskrie, and Ultra Holding will provide
Miracor with access to the corporate books, ledgers, and records relating to
Ultra Holding and the Subsidiaries for the period February 9, 2000 through
February 28, 2001 upon reasonable notice and during normal business hours. In
addition, Bergmann, McCoskrie, and Ultra Holding agree to cooperate with any and
all audits relating to Miracor's ownership of Ultra Holding and the Subsidiaries
concerning the time period between February 9, 2000 and February 28, 2001.

         6. On 20 days advance written request by Ultra Holding, Miracor will
provide to Ultra Holding the copies of any checks issued by Ultra Holding or any
Subsidiary during the period February 9, 2000 through March 15, 2001 that are in
the possession of Miracor as of July 31, 2001, including any checks bearing John
McCoskrie's signature. Ultra Holding agrees to return checks to Miracor within
15 days of receipt.

         7. No party hereto shall make any disparaging remarks regarding any
other party hereto.

         8. Miracor, for and on behalf of itself and its successors and assigns,
hereby releases and discharges Bergman, McCoskrie, Ultra Holding, the
Subsidiaries, MedSource, and Jamac, their agents, representatives, servants,
employees, attorneys, officers, directors, shareholders, insurers, and direct
and indirect parents, subsidiaries, and affiliates, and their successors and
assigns from any and all actions, obligations, debts, losses in revenue,
damages, costs, dues, claims, choses in action and demands of every kind or
nature, known or unknown, which it had, now has, or may have based on, arising

                                     Page 6
<PAGE>

out of, or relating to any act, omission, transaction, event or circumstance
occurring on or before the date of this Agreement, including but not limited to
those relating to or arising out of the Merger Agreement, the Ancillary
Agreements, and the claims asserted in the Miracor Action. None of the Parties
release the other Parties from any breach or obligation arising from this
Agreement.

         9. Bergmann, McCoskrie, Ultra Holding, the Subsidiaries, MedSource, and
Jamac, for and on behalf of themselves and their successors and assigns, hereby
release and discharge Miracor, its agents, representatives, servants, employees,
officers, directors, shareholders, insurers, and direct and indirect parents,
subsidiaries, and affiliates, and their successors and assigns from any and all
actions, obligations, debts, losses in revenue, damages, costs, dues, claims,
choses in action and demands of every kind or nature, known or unknown, which
they had, now have, or may have based on, arising out of, or relating to any
act, omission, transaction, event or circumstance occurring on or before the
date of this Agreement, including but not limited to those relating to or
arising out of the Merger Agreement, the Ancillary Agreements, and the claims
asserted in the Bergmann Action. None of the Parties release the other Parties
from any breach of obligation arising from, or representation within this
Agreement.

         10. Within 5 days from the execution hereof, Miracor shall dismiss the
Miracor Action with prejudice and Bergmann shall dismiss the Bergmann Action
with prejudice. The Parties will jointly seek an order from the Court confirming
the dismissals and retaining jurisdiction to enforce this Agreement.

         11. The Parties hereto agree that if there is a dispute concerning the
funds held in escrow by Akerman, Senterfitt, then Akerman, Senterfitt shall have
the right to file an interpleader action and deposit the funds in the registry

                                     Page 7
<PAGE>

of the Court without liability to any party hereto. Akerman, Senterfitt shall be
entitled to recover its attorney's fees and costs in filing such action and with
respect to any claim asserted against it arising from its role as escrow agent
from the non-prevailing party. Miracor agrees that in the event of such
litigation, it shall not seek to disqualify Akerman, Senterfitt from
representing Bergmann, McCoskrie, Ultra Holding, or the Subsidiaries in any
subsequent litigation.

         12. The Merger Agreement and Ancillary Agreements are hereby terminated
and no party shall have any further rights or obligations thereunder.

         13. Miracor represents and warrants it has not encumbered any assets of
Ultra Holding or entered into any agreement of any kind on behalf of Ultra
Holding or the Subsidiaries that was not also known to or executed by McCoskrie
or Bergmann, requested by McCoskrie or Bergmann (see Exhibit "A"), or ratified
or accepted by McCoskrie or Bergmann on behalf of Ultra Holding or the
Subsidiaries. Further, Miracor represents and warrants that, after March 9,
2001, neither it nor any of its officers, directors, employees, or agents
encumbered the assets of Ultra Holding or the Subsidiaries in any way or took
any action that obligates or exposes Ultra Holding or the Subsidiaries to
liability.

         14. Bergmann and McCoskrie represent and warrant that they have not
taken any action that obligates or exposes Miracor to liability with the
exception of Exhibit "A."

         15. The Parties expressly warrant to each other that they have not
previously assigned, transferred or conveyed the claims disposed of by this
Agreement.

         16. This Agreement has been negotiated and drafted by counsel for the
Parties and, therefore, it shall not be construed in favor of or against any of
the Parties hereto. All Parties represent that they have had the opportunity to
consult with counsel at all phases of the negotiation of this Agreement and the

                                     Page 8
<PAGE>

preceding litigation. All Parties acknowledge that they fully understand all
terms of this Agreement. All parties understand the effect of dismissing the
Miracor Litigation and Bergmann Litigation with prejudice.

         17. The Parties affirmatively state that no representation, promise, or
agreement relating to this settlement not expressed in this Agreement has been
made to any of the Parties, and that this Agreement contains all of the terms
relating to this settlement, which are contractual in nature and not merely
recitals, and may not be modified or changed, except in a writing signed by all
Parties. This Agreement supercedes any prior Agreements between the Parties.

         18. This Agreement is entered into by the Parties to resolve disputed
claims, and neither this Agreement nor the compromise and settlement provided
herein nor any statement made, action taken, or document prepared in connection
with the negotiation, execution and implementation of this Agreement shall be
deemed or be construed as an admission on the part of any released party and
that each released party denies any such liability.

         19. This Agreement shall inure to the benefit of, and shall bind each
Party's successors, assigns, officers, directors, partners, shareholders,
agents, insurers, associates, employees, and representatives.

         20. This Agreement shall be governed by and construed under the laws of
the State of Florida. The Parties agree that the jurisdiction for the
enforcement of this Agreement or the interpretation of its terms shall be in
Hillsborough County, Florida. In the event of litigation arising under this
Agreement, the prevailing party shall be entitled to an award of costs and
attorney's fees, whether incurred at trial, on appeal, or in any bankruptcy
proceeding. The Parties waive any right to a jury trial.

                                     Page 9
<PAGE>

         21. The Parties shall each bear their own costs and attorneys' fees
incurred in connection with the Miracor Action, the Bergmann Action, or the
preparation of this Agreement.

         22. The undersigned Parties agree that this document can be executed in
counterparts, and will be as effective and binding as if executed as a whole.
The effective date of this Settlement Agreement shall be the date it is signed
by the last party hereto.

         23. Any individual executing this agreement on behalf of a corporate
entity, L.L.C., or partnership represents that he has the authority to enter
into, and bind, the entity for which he is signing.

         IN WITNESS WHEREOF, the Parties have executed this Settlement Agreement
and Mutual Release this _____ of _________________, 2001.

Signed and delivered                      ULTRA OPEN MRI OF ST. PETERSBURG, INC.
in the presence of:

_____________________________             By:___________________________________
_____________________________             As its _______________________________

STATE OF _________________ )
COUNTY OF ________________ )

         The foregoing instrument was acknowledged before me this ______ day of
____________, 2001, by _______________________, as _____________________ of
Ultra Open MRI of St. Petersburg, Inc., _____ who is personally known to me or
_____ who has produced ________________________ as identification (check one).

                                          ______________________________________
                                          Print Name:__________________________
                                          Notary Public, State of Florida
                                          My Commission Expires:

                                    Page 10
<PAGE>

Signed and delivered                      ULTRA OPEN MRI OF TAMPA, INC.
in the presence of:

_____________________________             By:___________________________________
_____________________________             As its _______________________________
STATE OF __________________)
COUNTY OF ________________ )

         The foregoing instrument was acknowledged before me this ______ day of
____________, 2001, by _______________________, as _____________________ of
Ultra Open MRI of Tampa, Inc., _____ who is personally known to me or _____ who
has produced ________________________ as identification (check one).

                                          ______________________________________
                                          Print Name:__________________________
                                          Notary Public, State of Florida
                                          My Commission Expires:

Signed and delivered ULTRA OPEN MRI CORPORATION in the presence of:

_____________________________            By:____________________________________
_____________________________            As its _______________________________

STATE OF _________________ )
COUNTY OF ________________ )

         The foregoing instrument was acknowledged before me this ______ day of
____________, 2001, by _______________________, as _____________________ of
Ultra Open MRI Corporation, _____ who is personally known to me or _____ who has
produced ________________________ as identification (check one).

                                          ______________________________________
                                          Print Name:__________________________
                                          Notary Public, State of Florida
                                          My Commission Expires:

                                    Page 11
<PAGE>

Signed and delivered                        ULTRA DIAGNOSTICS, LLC
in the presence of:

_____________________________               By:_________________________________
_____________________________               As its _____________________________

STATE OF _________________ )
COUNTY OF ________________ )

         The foregoing instrument was acknowledged before me this ______ day of
____________, 2001, by _______________________, as _____________________ of
Ultra Diagnostics, LLC, _____ who is personally known to me or _____ who has
produced ________________________ as identification (check one).

                                          ______________________________________
                                          Print Name:__________________________
                                          Notary Public, State of Florida
                                          My Commission Expires:

Signed and delivered                        ULTRA OPEN MRI HOLDING CORP.
in the presence of:

_____________________________               By:_________________________________
_____________________________               As its _____________________________

STATE OF _________________ )
COUNTY OF ________________ )

         The foregoing instrument was acknowledged before me this ______ day of
____________, 2001, by _______________________, as _____________________ of
Ultra Open MRI Holding Corp., _____ who is personally known to me or _____ who
has produced ________________________ as identification (check one).

                                          ______________________________________
                                          Print Name:__________________________
                                          Notary Public, State of Florida
                                          My Commission Expires:

                                    Page 12
<PAGE>

Signed and delivered                        MIRACOR DIAGNOSTICS, INC.
in the presence of:

_____________________________               By:_________________________________
_____________________________               As its _____________________________

STATE OF _________________ )
COUNTY OF ________________ )

         The foregoing instrument was acknowledged before me this ______ day of
____________, 2001, by _______________________, as _____________________ of
Miracor Diagnostics, Inc., _____ who is personally known to me or _____ who has
produced ________________________ as identification (check one).

                                          ______________________________________
                                          Print Name:__________________________
                                          Notary Public, State of Florida
                                          My Commission Expires:

Signed and delivered
in the presence of:

-----------------------------               ------------------------------------
                                                     FREDERICK J. BERGMANN
-----------------------------

STATE OF _________________ )
COUNTY OF ________________ )

         The foregoing instrument was acknowledged before me this ______ day of
____________, 2001, by Frederick J. Bergmann, _____ who is personally known to
me or _____ who has produced ________________________ as identification (check
one).

                                          ______________________________________
                                          Print Name:__________________________
                                          Notary Public, State of Florida
                                          My Commission Expires:

Signed and delivered
in the presence of:

-----------------------------               ------------------------------------
                                                     JOHN MCCOSKRIE
-----------------------------

                                    Page 13
<PAGE>

STATE OF _________________ )
COUNTY OF ________________ )

         The foregoing instrument was acknowledged before me this ______ day of
____________, 2001, by John McCoskrie, _____ who is personally known to me or
_____ who has produced ________________________ as identification (check one).

                                          ______________________________________
                                          Print Name:__________________________
                                          Notary Public, State of Florida
                                          My Commission Expires:

STATE OF _________________ )
COUNTY OF ________________ )

         The foregoing instrument was acknowledged before me this ______ day of
___________, 2001, by _______________________, as ____________________ of
MedSource Holdings, Ltd., _____ who is personally known to me or _____ who has
produced __________________________ as identification (check one).

                                          ______________________________________
                                          Print Name:__________________________
                                          Notary Public, State of Florida
                                          My Commission Expires:

Signed and delivered                MEDSOURCE HOLDINGS, LTD.
in the presence of:

______________________________      By:_________________________________
______________________________      As its ______________________________

STATE OF _________________ )
COUNTY OF ________________ )

                                    Page 14
<PAGE>

         The foregoing instrument was acknowledged before me this ______ day of
___________, 2001, by _______________________, as ____________________ of Jamac
Enterprises, Ltd., _____ who is personally known to me or _____ who has produced
__________________________ as identification (check one).

                                          ______________________________________
                                          Print Name:__________________________
                                          Notary Public, State of Florida
                                          My Commission Expires:

Signed and delivered                JAMAC ENTERPRISES, LTD.
in the presence of:

______________________________      By:_________________________________
______________________________      As its ______________________________

                                    Page 15<PAGE>

EXHIBIT 10.5

                            EQUITY PURCHASE AGREEMENT

                            Dated as of May 25, 2001
                        Pertaining to the acquisition by

                            MIRACOR DIAGNOSTICS, INC.

         Of all of the outstanding Membership Interest Certificates of:

                             ENVISION HEALTHCARE LLC
                                dba WIDE OPEN MRI

<PAGE>

                                TABLE OF CONTENTS

                                                                            PAGE

1.       SALE AND TRANSFER OF CERTIFICATES; CLOSING............................1

         1.1      Certificates.................................................1

         1.2      Purchase Price...............................................1

         1.3      Closing......................................................1

         1.4      Closing Obligations..........................................1

2.       REPRESENTATIONS AND WARRANTIES OF SELLERS.............................2

         2.1      Organization and Good Standing...............................2

         2.2      Enforceability; No Conflict..................................2

         2.3      Capitalization...............................................3

         2.4      Brokers Or Finders...........................................3

3.       REPRESENTATIONS AND WARRANTIES OF BUYER...............................3

         3.1      Organization and Good Standing...............................3

         3.2      Validity; No Conflict........................................3

         3.3      Investment Intent............................................4

         3.4      Certain Proceedings..........................................4

         3.5      Brokers Or Finders...........................................4

4.       CERTAIN COVENANTS OF SELLERS..........................................4

         4.1      Access and Investigation.....................................4

         4.2      Operation of The Businesses of The Company...................4

         4.3      No Negotiation...............................................5

5.       CERTAIN ADDITIONAL COVENANTS..........................................5

         5.1      Approvals of Governmental Bodies.............................5

         5.2      Best Efforts.................................................5

                                       i
<PAGE>

         5.3      Change of Name; Marks.  .....................................5

         5.4      Non-Solicitation of Employees.  .............................6

         5.5      Sale of the Company.  .......................................6

6.       CONDITIONS PRECEDENT TO THE BUYER'S OBLIGATION TO CLOSE...............6

         6.1      Accuracy of Representations..................................6

         6.2      Sellers' Performance.........................................6

         6.3      Consents.....................................................6

         6.4      No Order.....................................................6

         6.5      Corporate Proceedings........................................6

         6.6      Resignation of Chairman of the Board.........................6

7.       CONDITIONS PRECEDENT TO THE SELLERS' OBLIGATION TO CLOSE..............6

         7.1      Accuracy of Representations..................................7

         7.2      Buyer's Performance..........................................7

         7.3      No Order.....................................................7

         7.4      Corporate Proceedings........................................7

8.       TERMINATION...........................................................7

         8.1      Termination Events...........................................7

         8.2      Effect of Termination........................................8

9.       INDEMNIFICATION.......................................................8

         9.1      Indemnification..............................................8

         9.2      Procedure For Indemnification - Third Party Claims...........8

10.      GENERAL PROVISIONS....................................................9

         10.1     Expenses.....................................................9

         10.2     Public Announcements.........................................9

         10.3     Confidentiality.............................................10

                                       ii
<PAGE>

         10.4     Notices.....................................................10

         10.5     Arbitration.................................................11

         10.6     Further Assurances..........................................12

         10.7     Waiver......................................................12

         10.8     Entire Agreement and Modification...........................13

         10.9     Assignments, Successors, and No Third-Party Rights..........13

         10.10    Severability................................................13

         10.11    Section Headings, Construction..............................13

         10.12    Governing Law...............................................13

         10.13    Counterparts................................................13

11.      DEFINITIONS..........................................................14

SIGNATURE PAGE...............................................................S-1

                                      iii
<PAGE>

                            EQUITY PURCHASE AGREEMENT
                            -------------------------

                  This Equity Purchase Agreement, dated as of May 25, 2001
("Agreement"), by Miracor Diagnostics, Inc., a Utah corporation (the "Buyer"),
and Robert S. Muehlberg and Annie L. Muehlberg (collectively, the "Sellers"), in
their capacity as owners of Envision Healthcare LLC, a California limited
liability company dba Wide Open MRI (the "Company"). In this Agreement, the term
"Parties" means the Sellers on one hand, and the Buyer on the other. Section 12
contains definitions, or references to the definitions, of the capitalized terms
used in this Agreement.

                                    AGREEMENT

                  The Parties, intending to be legally bound, agree as follows:

                  1. SALE AND TRANSFER OF CERTIFICATES; CLOSING

1.1      CERTIFICATES. Subject to the satisfaction or waiver of the conditions
         to closing in Sections 6 and 7, at the Closing, the Sellers will sell
         and transfer their Membership Interest Certificates (the
         "Certificates") in the Company to the Buyer, and the Buyer will
         purchase the Certificates from the Sellers.

1.2      PURCHASE PRICE. The purchase price for the Certificates (the "Purchase
         Price") is $200,000.

1.3      CLOSING. The closing of the purchase and sale of the Certificates (the
         "Closing") will take place at the offices of the Buyer, at 10:00 a.m.
         (local time) on the second Business Day after the satisfaction of the
         conditions to closing in Sections 6 and 7, or at any other time and
         place the Parties agree. The Parties intend that the Closing occur on
         or before June 1, 2001.

1.4      CLOSING OBLIGATIONS. At the Closing:

         1.4.1    SELLERS DELIVERIES. The Sellers will deliver to the Buyer:

         (a)      All of the Certificates representing ownership of the Company,
                  duly endorsed (or accompanied by duly executed powers) for
                  transfer to the Buyer;

         (b)      The documents relating to Company proceedings specified in
                  Section 6.6.

         1.4.2    BUYER DELIVERIES. The Buyer obligates itself to pay the
                  Sellers:

         (a)      A Promissory Note for the principal sum of $200,000, duly
                  executed by the Buyer; and

         (b)      The documents relating to corporate proceedings specified in
                  Section 7.4.

<PAGE>

                  2. REPRESENTATIONS AND WARRANTIES OF SELLERS

                  The Sellers represent and warrant to the Buyer as follows:

2.1      ORGANIZATION AND GOOD STANDING. Schedule 2.1 accurately lists the
         Company's jurisdiction of incorporation or formation, other
         jurisdictions where it is qualified to do business as a foreign
         corporation, and capitalization. The Company consists of a limited
         liability company duly organized, validly existing and in good standing
         under the laws of California, with full power and authority to conduct
         business as it is now being conducted, to own or use the properties and
         assets that it purports to own or use, and to perform its obligations
         under each Applicable Contract to which it is a party. The Company is
         duly qualified to do business as a limited liability company and is in
         good standing under the laws of each state in which the failure to
         qualify would reasonably be expected to have a material adverse effect.
         The Sellers are individuals and the sole owners of the Certificates
         representing ownership of the Company, and are authorized to enter into
         this equity purchase/sale transaction.

2.2      ENFORCEABILITY; NO CONFLICT.

         2.2.1    ENFORCEABILITY. This Agreement constitutes the legal, valid,
                  and binding obligation of the Sellers, enforceable against it
                  in accordance with its terms, subject to the Enforceability
                  Exceptions. The Sellers have the power and authority to
                  execute and deliver, and perform their obligations under, this
                  Agreement.

         2.2.2    NO CONFLICT. Neither the execution and delivery of this
                  Agreement nor the consummation or performance of any of the
                  Transactions will (with or without notice or lapse of time):

         (a)      Contravene, conflict with, or result in a violation of the
                  Organizational Documents of the Company;

         (b)      Contravene, conflict with, or result in a violation of, or
                  give any Governmental Body or other Person the right to
                  prevent, delay or otherwise interfere with any of the
                  Transactions or to exercise any remedy or obtain any relief
                  under, any Law or any Order to which the Company or Sellers,
                  or any of the assets owned or used by the Company, are
                  subject;

         (c)      Contravene, conflict with, or result in a violation of any of
                  the terms or requirements of, or give any Governmental Body
                  the right to revoke, withdraw, suspend, cancel, terminate, or
                  modify, any material Governmental Authorization held by the
                  Company;

         (d)      Contravene, conflict with, or result in a violation or breach
                  of any provision of, or give any Person the right to declare a
                  default or exercise any remedy under, or to accelerate the
                  maturity or performance of, or to cancel, terminate, or
                  modify, any Material Contract; or

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         (e)      result in the imposition or creation of any Encumbrance upon
                  or with respect to the Company assets.

         2.2.3    CONSENTS. Neither the Sellers, nor the Company, are or will be
                  required to give any notice to or obtain any Consent from any
                  Person in connection with the execution, delivery or
                  performance of this Agreement or the consummation of the
                  Transactions.

2.3      CAPITALIZATION. The authorized Certificates of the Company consist only
         of five (5) Certificates, of which four (4) Certificates are issued and
         outstanding and constitute all of the Certificates. The Sellers are,
         and will be on the Closing Date, the record and beneficial owners and
         holders of the Certificates, respectively, free and clear of all
         encumbrances, adverse claims and restrictions on transfer other than
         under applicable securities laws. No legend or other reference to any
         purported encumbrance appears upon any certificate representing equity
         securities of the Company. All of the outstanding equity securities of
         the Company have been duly authorized and validly issued and are fully
         paid and non-assessable and were not issued in violation of any
         preemptive rights. Neither the Sellers nor the Company are party to any
         Contract relating to the issuance, sale, or transfer of any equity or
         other securities of the Company. None of the outstanding equity or
         other securities of the Company were issued in violation of the
         Securities Act or any other Law. The Company does not own, or have any
         Contract to acquire, any equity or other securities of any Person or
         any direct or indirect equity or ownership interest in any other
         business. At the Closing, the Buyer will receive title to all of the
         Certificates free and clear of any encumbrances, adverse claims and
         restrictions on transfer other than under applicable securities laws.

2.4      BROKERS OR FINDERS. The Sellers and their agents have incurred no
         obligation or liability, contingent or otherwise, for brokerage or
         finders' fees or agents' commissions or other similar payment in
         connection with this Agreement. The Company has incurred no material
         costs related to the Transactions.

                   3. REPRESENTATIONS AND WARRANTIES OF BUYER

                  The Buyer represents and warrants to the Sellers as follows:

3.1      ORGANIZATION AND GOOD STANDING. The Buyer is a corporation duly
         organized, validly existing, and in good standing under the laws of the
         State of Utah.

3.2      VALIDITY; NO CONFLICT.

         3.2.1    VALIDITY. This Agreement constitutes the legal, valid, and
                  binding obligation of the Buyer, enforceable against the Buyer
                  in accordance with its terms, subject to the Enforceability
                  Exceptions. The Buyer has the corporate power and authority to
                  execute and deliver this Agreement and to perform its
                  obligations under it.

         3.2.2    NO CONFLICT. Neither the execution and delivery of this
                  Agreement by the Buyer nor the consummation or performance of
                  any of the Transactions by the Buyer will give any Person the
                  right to prevent, delay, or otherwise interfere with any of
                  the Transactions pursuant to: (a) any provision of the Buyer's
                  Organizational Documents; (b) any Law or Order to which the

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                  Buyer is subject; or (c) any material Contract to which the
                  Buyer is a party or by which the Buyer is or could be bound.
                  The Buyer is not and will not be required to obtain any
                  Consent from any Person in connection with the execution and
                  delivery of this Agreement or the consummation of any of the
                  Transactions.

3.3      INVESTMENT INTENT. The Buyer is acquiring the Certificates for its own
         account and not with a view to their distribution within the meaning of
         Section 2(11) of the Securities Act.

3.4      CERTAIN PROCEEDINGS. There is no pending Proceeding that has been
         commenced against the Buyer and that challenges, or would reasonably be
         expected to have the effect of preventing, delaying, making illegal, or
         otherwise interfering with, any of the Transactions. To the Buyer's
         knowledge, no such Proceeding has been Threatened.

3.5      BROKERS OR FINDERS. The Buyer and its officers and agents have incurred
         no obligation or liability, contingent or otherwise, for brokerage or
         finders' fees or agents' commissions or other similar payment in
         connection with this Agreement.

                         4. CERTAIN COVENANTS OF SELLERS

4.1      ACCESS AND INVESTIGATION. Between the date of this Agreement and the
         Closing Date, the Sellers will cause the Company and its
         Representatives to, (a) give the Buyer and its Representatives and
         prospective lenders and their Representatives (collectively, the
         "Buyer's Advisors") access, upon reasonable advance notice, to the
         Company's personnel, properties, Contracts, books and records, and
         other documents and data, (b) furnish the Buyer and the Buyer's
         Advisors with copies of all these Contracts, books and records, and
         other existing documents and data the Buyer reasonably requests, and
         (c) furnish the Buyer and the Buyer's Advisors with any additional
         financial, operating, and other data and information as the Buyer
         reasonably requests, in each case subject to any applicable legal or
         contractual requirements. The Sellers will give the Buyer notice
         promptly after either of them becomes aware of (i) the occurrence or
         non-occurrence of any event whose occurrence or non-occurrence would
         reasonably be expected to cause (A) any representation or warranty in
         this Agreement to be untrue or inaccurate in any material respect, (B)
         any condition to Closing not be satisfied, and (ii) any material
         failure of Sellers to perform or comply with any covenant or agreement
         to be complied with or satisfied by it under this Agreement but (x) the
         delivery of any notice pursuant to this section will not limit or
         otherwise affect the remedies available under this Agreement and (y)
         giving of such notice will not be required from and after the time that
         the Buyer has actual knowledge of the information required to be
         included in such notice.

4.2      OPERATION OF THE BUSINESSES OF THE COMPANY. Between the date of this
         Agreement and the Closing Date, the Sellers will cause the Company to:

         (a)      Conduct the Business only in the Ordinary Course;

         (b)      Use its Best Efforts to (i) preserve intact the Company's
                  current business organization, (ii) keep available the
                  services of its current officers, employees, and agents, and
                  (iii) maintain good relations with suppliers, customers,

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                  landlords, creditors, employees, agents, and others having
                  business relationships with the Company;

         (c)      Confer with the Buyer concerning operational matters of a
                  material nature not in the Ordinary Course;

         (d)      Maintain full accruals (without regard to the time for payment
                  or proper accrual under GAAP) associated with any additional
                  bonus programs instituted before the Closing; and

         (e)      Not offer to or make any change in the compensation payable or
                  to be payable to any officer, director, employee, agent or
                  consultant of the Company;

         (f)      Not permit any Encumbrance to be placed upon on any material
                  asset of the Company;

         (g)      Maintain asset quality review and underwriting standards
                  consistent with practices in effect; and

         (h)      Change any tax or accounting practice (except as required by a
                  change in applicable law or GAAP).

4.3      NO NEGOTIATION. Until this Agreement is terminated under Section 8, the
         Sellers will not, and will cause the Company and each of its
         Representatives not to, directly or indirectly solicit, initiate, or
         encourage any inquiries or proposals from, discuss or negotiate with,
         provide any non-public information to, or consider the merits of any
         inquiries or proposals from, any Person (other than the Buyer) relating
         to any transaction involving the sale of the Company's business or
         assets (other than sales of non-material Assets in the Ordinary
         Course), or any merger, consolidation, business combination, or similar
         transaction involving the Company.

                         5. CERTAIN ADDITIONAL COVENANTS

5.1      APPROVALS OF GOVERNMENTAL BODIES. As promptly as practicable after the
         date of this Agreement, the Parties will, and will cause each of their
         Related Persons to, make all filings required by Laws to be made by
         them to consummate the Transactions. Between the date of this Agreement
         and the Closing Date, each Party will, and will cause each Related
         Person to, cooperate with the other Party with respect to all filings
         that the Other Party is required by Laws to make in connection with the
         Transactions, and cooperate with the other Party in obtaining all
         Consents identified in Schedules 2.2.3 and 3.2.2.

5.2      BEST EFFORTS. Between the date of this Agreement and the Closing Date,
         each of the Parties will use their Best Efforts to cause their
         respective conditions in Section 6 and 7 to be satisfied.

5.3      CHANGE OF NAME; MARKS. All trade names owned by the Company shall
         remain with the Company.

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5.4      NON-SOLICITATION OF EMPLOYEES. The Sellers shall not, for a period of
         one year from the Closing Date, solicit employment of any person who is
         an employee of the Company as of the date of this Agreement. This
         provision shall not prohibit (a) general solicitation through
         advertising and (b) solicitation by a third party employment agency or
         executive recruiting firm so long as the Sellers do not provide such
         agency or firm with the name of the Company employee.

           6. CONDITIONS PRECEDENT TO THE BUYER'S OBLIGATION TO CLOSE

                  The Buyer's obligation to purchase the Certificates and to
take the other actions required to be taken by the Buyer at the Closing is
subject to the satisfaction, at or prior to the Closing, of each of the
following conditions (any of which could be waived by the Buyer, in its sole
discretion, in whole or in part):

6.1      ACCURACY OF REPRESENTATIONS. The Sellers' representations and
         warranties in this Agreement must be accurate in all material respects
         as of the Closing Date as if made on the Closing Date.

6.2      SELLERS' PERFORMANCE. The covenants and obligations that the Sellers
         are required to perform or to comply with pursuant to this Agreement at
         or prior to the Closing must have been duly performed and complied with
         in all material respects. Each document required to be delivered
         pursuant to Section 1.4.1 must have been delivered.

6.3      CONSENTS. Each Consent identified in Schedule 2.2.3 must have been
         obtained and must be in full force and effect.

6.4      NO ORDER. There must not be in effect any Law or Order that (a)
         prohibits the sale of the Certificates by the Sellers to the Buyer, and
         (b) has been adopted or issued, or has otherwise become effective,
         since the date of this Agreement.

6.5      CORPORATE PROCEEDINGS. The Buyer must have received a Secretary's
         certificate from the Sellers, in form reasonably satisfactory to the
         Buyer, certifying as to the completion of all necessary corporate
         proceedings and the incumbency of the persons executing this Agreement
         on behalf of the Sellers. The Buyer must have received Secretary's
         certificates from the Company, in form and substance reasonably
         satisfactory to the Buyer, certifying as to the Company's
         Organizational Documents, incumbent directors and officers, Membership
         Interest Certificates ledger and good standing in the jurisdiction of
         its incorporation and good standing as a foreign corporation in all
         applicable states.

6.6      RESIGNATION OF CHAIRMAN OF THE BOARD. The Buyer must have received a
         resignation of the Chairman of the Board of the Company. Such
         resignation shall be effective upon the Closing.

           7. CONDITIONS PRECEDENT TO THE SELLERS' OBLIGATION TO CLOSE

                  The Sellers' obligation to sell the Certificates and to take
the other actions required to be taken by the Sellers at the Closing is subject
to the satisfaction, at or prior to the Closing, of each of the following

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conditions (any of which can be waived by the Sellers, in its sole discretion,
in whole or in part):

7.1      ACCURACY OF REPRESENTATIONS. The Buyer's representations and warranties
         in this Agreement must have been accurate in all material respects as
         of the Closing Date as if made on the Closing Date.

7.2      BUYER'S PERFORMANCE. The covenants and obligations that the Buyer is
         required to perform or to comply with pursuant to this Agreement at or
         prior to the Closing must have been performed and complied with in all
         material respects. The Buyer must have delivered each document required
         to be delivered by the Buyer pursuant to Section 1.4.2(b) and must have
         made the Estimated Payment required to be made by the Buyer pursuant to
         Section 1.4.2(a).

7.3      NO ORDER. There must not be in effect any Law or Order that (a)
         prohibits the sale of the Certificates by the Sellers to the Buyer, and
         (b) has been adopted or issued, or has otherwise become effective,
         since the date of this Agreement.

7.4      CORPORATE PROCEEDINGS. The Sellers must have received a Secretary's
         certificate from the Buyer, in form reasonably satisfactory to the
         Sellers, certifying as to the completion of all necessary corporate
         proceedings and the incumbency of the person executing this Agreement
         on behalf of the Buyer.

                                 8. TERMINATION

8.1      TERMINATION EVENTS. This Agreement can, by notice given before or at
         the Closing, be terminated:

         (a)      By either Party, if the other has committed a material Breach
                  of this Agreement, and the Breach has not been waived and that
                  Party was not in material Breach of this Agreement prior to
                  the Breach that is forming the basis for the proposed
                  termination; PROVIDED, HOWEVER, that the Party that has
                  committed a material Breach will have ten (10) Business Days
                  after receipt of notice from the other Party of its intention
                  to terminate this Agreement pursuant to this Section 8.1(a) to
                  cure such Breach before the other Party may so terminate this
                  Agreement;

         (b)      By the Buyer, if any condition in Section 6 has not been
                  satisfied on or before June 1, 2001 or if satisfaction of the
                  condition is or becomes impossible (other than through the
                  Buyer's failure to comply with its obligations under this
                  Agreement) and the Buyer has not waived the condition on or
                  before the Closing Date;

         (c)      By the Sellers, if any condition in Section 7 has not been
                  satisfied on or before June 1, 2001, or if satisfaction of a
                  condition is or becomes impossible (other than through the
                  Sellers' failure to comply with their obligations under this
                  Agreement) and the Sellers have not waived the condition on or
                  before the Closing Date;

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         (d)      By mutual consent of the Buyer and the Sellers; or

         (e)      By either the Buyer or the Sellers if the Closing has not
                  occurred (other than through the failure of any Party seeking
                  to terminate this Agreement to comply fully with its
                  obligations under this Agreement) on or before June 1, 2001,
                  or any later date the Parties agree on.

8.2      EFFECT OF TERMINATION. Each Party's right of termination under Section
         8.1 is in addition to any other rights it has under this Agreement or
         otherwise, and the exercise of a right of termination will not be an
         election of remedies. If this Agreement is terminated pursuant to
         Section 8.1, all further obligations of the Parties under this
         Agreement will terminate, except that the obligations in Sections 11.1
         and 11.3 will survive; PROVIDED, HOWEVER, that if this Agreement is
         terminated by a Party because of the Breach of the Agreement by the
         other Party or because one or more of the conditions to the terminating
         Party's obligations under this Agreement is not satisfied as a result
         of the other Party's failure to comply with its obligations under this
         Agreement, the terminating Party's right to pursue all legal remedies
         will survive such termination unimpaired.

                               9. INDEMNIFICATION

9.1      INDEMNIFICATION. All the representations, warranties, covenants and
         agreements of the Sellers and the Buyer contained in this Agreement
         shall not survive the Closing Date. Each of Buyer and Sellers shall not
         have any liability under this Agreement of any sort whatsoever, except
         in the case of either fraud or willful misconduct (i.e., an intentional
         breach of a representation, warranty, covenant or agreement, but
         excluding a negligent or reckless breach) by the Buyer or Sellers, as
         applicable, of any of its representations, warranties, agreements or
         covenants contained in this Agreement or in any other instrument or
         document required to be delivered pursuant to this Agreement in
         connection herewith; PROVIDED, HOWEVER, that (i) Buyer shall indemnify,
         defend and hold Sellers and its respective Representatives,
         stockholders, controlling Persons, and affiliates (collectively, the
         "Sellers' Indemnified Persons"), harmless from and against any claims
         or damages arising after the Closing resulting from the operation of
         the Company's business by Buyer after the Closing Date and (ii) Buyer
         or Sellers, as applicable, shall indemnify, defend and hold the Sellers
         Indemnified Parties or the Buyer Indemnified Parties, as applicable,
         harmless from and against any claims for finder's fees or broker's
         commissions arising out of any arrangements made by or for the
         indemnifying party, if any. In the event of a fraudulent or willful
         breach, Buyer or Sellers, as applicable, shall indemnify, defend and
         hold the Sellers Indemnified Persons or the Buyer Indemnified Persons,
         as applicable, harmless for any loss, liability, claim, damage, setoff,
         recoupment, disgorgement expense (including costs of investigation and
         defense and reasonable attorney's fees), whether or not involving a
         third-party claim. "Buyer Indemnified Persons" shall collectively mean
         the Buyer, the Company, and its respective Representatives,
         stockholders, controlling Persons and Affiliates.

9.2      PROCEDURE FOR INDEMNIFICATION - THIRD PARTY CLAIMS.

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         9.2.1 NOTICE. Promptly after receipt by an indemnified Party under
         Section 9.1 of notice of the commencement of any Proceeding against it,
         the indemnified Party will, if a claim is to be made against an
         indemnifying Party under that Section, give notice to the indemnifying
         Party of the commencement of the claim. The failure to notify the
         indemnifying Party will not relieve the indemnifying Party of any
         liability that it could have to any indemnified Party, except to the
         extent that the indemnified Party demonstrates that the defense of the
         action is prejudiced by the indemnifying Party's failure to give the
         notice.

         9.2.2 PARTICIPATION. If any Proceeding referred to in Section 9.2.1 is
         brought against an indemnified Party and it gives notice to the
         indemnifying Party of the commencement of the Proceeding, the
         indemnifying Party will be entitled to participate in the Proceeding
         and, to the extent that it wishes (unless the indemnifying Party is
         also a party to the Proceeding and the indemnified Party determines in
         good faith that joint representation would be inappropriate), to assume
         the defense of the Proceeding with counsel reasonably satisfactory to
         the indemnified Party and, after notice from the indemnifying Party to
         the indemnified Party of its election to assume the defense of the
         Proceeding, the indemnifying Party will not, as long as it diligently
         conducts the defense, be liable to the indemnified Party under this
         Section 9 for any fees of other counsel or any other expenses with
         respect to the defense of the Proceeding, in each case subsequently
         incurred by the indemnified Party in connection with the defense of the
         Proceeding, other than reasonable costs of investigation. If the
         indemnifying Party assumes the defense of a Proceeding, (a) no
         compromise or settlement of the claims will be effected by the
         indemnifying Party without the indemnified Party's consent unless (i)
         there is no finding or admission of any violation of Laws or any
         violation of the rights of any Person and no adverse effect on any
         other claims that could be made against the indemnified Party, and (ii)
         the sole relief provided is monetary damages that are paid in full by
         the indemnifying Party; and (b) the indemnified Party will have no
         liability with respect to any compromise or settlement of the claims
         effected without its consent. If notice is given to an indemnifying
         Party of the commencement of any Proceeding and the indemnifying Party
         does not, within ten days after the indemnified Party's notice is
         given, give notice to the indemnified Party of its election to assume
         the defense of the Proceeding, the indemnifying Party will be bound by
         any determination made in the Proceeding or any compromise or
         settlement effected by the indemnified Party.

                             10. GENERAL PROVISIONS

10.1     EXPENSES. Except as otherwise expressly provided in this Agreement,
         each Party will bear its respective expenses incurred in connection
         with the preparation, execution, and performance of this Agreement and
         the Transactions, including all fees and expenses of agents,
         representatives, counsel and accountants. If this Agreement is
         terminated, the obligation of each Party to pay its own expenses will
         be subject to any rights of that Party arising from a Breach of this
         Agreement by another Party.

10.2     PUBLIC ANNOUNCEMENTS. Neither Party will make any public announcement
         about, or otherwise disclose publicly, this Agreement, the Transactions
         or the related negotiations without prior consultations and
         coordination with the other Party; PROVIDED, HOWEVER, (a) that either

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         Party can make any public announcement that its counsel advises is
         required by Law or (b) either party can make any public announcement
         with the prior written consent of the other party, such consent not to
         be unreasonably withheld.

10.3     CONFIDENTIALITY . Between the date of this Agreement and for two years
         after the Closing Date, each Party will maintain in confidence, and
         will cause its Affiliates, directors, officers, employees, agents, and
         advisors to maintain in confidence, any written, oral, or other
         information obtained from the other Party (or, in the case of the
         Buyer, the Company), or generated by the Party (such as analyses,
         compilations, studies or similar documents) in connection with the due
         diligence, negotiations and regulatory filings relating to this
         Agreement or the Transactions, and to use such information only in
         connection with the evaluation and negotiation of the Transactions. A
         receiving Party can, however, disclose such information to those of its
         Representatives who have a need to know such information in connection
         with ongoing due diligence, negotiations or regulatory filings with
         respect to this Agreement or the Transactions. In addition, the
         foregoing restrictions will not apply to information that (a) was
         generally available to the public prior to disclosure by the disclosing
         Party; (b) became generally available to the public, other than as a
         result of a disclosure by the disclosing Party or its Representatives;
         or (c) became available to the receiving Party on a non-confidential
         basis from a source not known by the receiving Party to be bound by a
         confidentiality agreement. If the Transactions are not consummated, (1)
         each receiving Party will return to the disclosing Party or destroy as
         much of the written information as the other Party reasonably requests;
         and (ii) the foregoing confidentiality provisions will remain in full
         force and effect for two years, despite the termination of this
         Agreement.

10.4     NOTICES. All notices, consents, waivers, and other communications under
         this Agreement must be in writing. They will be deemed to have been
         duly given when (a) delivered by hand (with written confirmation of
         receipt), (b) sent by telecopier (with written confirmation of
         receipt), so long as a copy is mailed by registered mail, return
         receipt requested, or (c) when received by the addressee, if sent by a
         nationally recognized overnight delivery service (receipt requested),
         in each case to the appropriate addresses and telecopier numbers stated
         below (or as a Party otherwise designates by notice to the other
         parties):

                          THE SELLERS:

                          Robert S. Muehlberg and
                          Annie L. Muehlberg
                          10385 Eagle Lake Drive
                          Escondido, CA  92029
                          Telephone:  (760) 745-1828

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                          THE COMPANY:

                          Envision Healthcare LLC
                          dba Wide Open MRI
                          3715 East South Street
                          Long Beach, CA  90805
                          Attention:  Managing Member
                          Telephone:
                          Facsimile:

                          THE BUYER:

                          Miracor Diagnostics, Inc.
                          9191 Towne Centre Drive, Suite 420
                          San Diego, CA  92122
                          Attention: M. Lee Hulsebus, CEO
                          Telephone: (858) 455-7127
                          Facsimile:  (858) 455-7295

                          with a copy (which does not constitute notice) to:

                          Robert E. Meshel, PC
                          44 Montgomery Street, Suite 1800
                          San Francisco, CA 94104
                          Telephone No.: 415-956-2436
                          Facsimile No.: 415-956-4971

10.5     ARBITRATION.

         10.5.1 RESOLUTION OF DISPUTES. The Parties will submit all
         controversies, disputes or claims for indemnification among them
         arising out of or relating to this agreement or the Transaction to
         binding arbitration as provided below. The arbitration and all related
         preliminary proceedings will be agreed upon by the Parties, or, failing
         agreement on those rules within thirty days of written request for
         agreement, in accordance with the Rules for Commercial Arbitration of
         the American Arbitration Association ("AAA"), as amended from time to
         time and as modified by this agreement. The dispute will be presented
         to a single arbitrator (the "Arbitrator") sitting in San Diego,
         California.

         10.5.2 SELECTION OF THE ARBITRATOR. The Parties will Jointly select the
         Arbitrator within fifteen days after demand for arbitration is made by
         a Party. If the Parties are unable to agree on an Arbitrator within
         that period, then any Party may request that the AAA select the
         Arbitrator in accordance with its then existing rules for doing so. The
         Arbitrator must possess substantive legal experience in the principal
         issues in dispute.

         10.5.3 DISCOVERY. Any discovery permitted will be limited to
         information directly relevant to the controversy in arbitration. In the
         event of discovery disputes, the Arbitrator is directed to issue orders
         as are appropriate to limit discovery in accordance with the foregoing
         and as are reasonable in light of the issues in dispute, the amount in
         controversy, and other relevant considerations. To the extent the
         Parties are unable to agree on the scope of discovery, the Arbitrator
         will require the Party seeking discovery on an issue to present the

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         legal and factual basis for the dispute and will permit the Party
         opposing discovery to respond. The Arbitrator will permit discovery on
         an issue only if he or she concludes that there is a reasonable and
         good faith basis in law and in fact for bringing the allegations and
         that the discovery appears likely to present substantive evidence
         regarding that dispute. The Arbitrator may allow limited discovery to
         permit investigation of some of the disputes or to determine whether a
         claim has sufficient basis in law or in fact to warrant further
         discovery. The Arbitrator, however, will issue appropriate orders to
         restrict the scope of that discovery. The federal or state rules of
         procedure and evidence will not apply to the arbitration proceedings,
         including without limitation the rules of discovery. The Arbitrator
         will consider claims of privilege, work product and other restrictions
         on discovery as appear to be warranted.

         10.5.4 FEES. The Arbitrator will award the prevailing Party its
         attorney's and experts' fees and disbursements incurred in resolving
         the dispute and will award double costs and expenses or other sanctions
         to the extent the Arbitrator finds any dispute advanced in the
         proceedings to be frivolous or without a good faith basis in fact and
         in Law when the dispute was first presented for arbitration.

         10.5.5 AWARD/CONSENT TO JURISDICTION. Except as may otherwise be agreed
         in writing by the Parties or as ordered by the Arbitrator upon
         substantial justification shown, the hearing for the dispute will be
         held within ninety days of submission of the dispute to arbitration.
         The Arbitrator will render a final award within thirty days following
         conclusion of the hearing and any required post-hearing briefing or
         other proceedings ordered by the Arbitrator. The Arbitrator will state
         the factual and legal basis for the award. The decision of the
         Arbitrator will be final and binding, except as provided in the Federal
         Arbitration Act, 9 U.S.C. ss.1. ET. SEQ., and except for errors of law
         based on the findings of fact. Final judgment may be entered upon the
         award in any court of competent jurisdiction, but entry of judgment
         will not be required to make the award effective. By signing below, the
         Parties irrevocably submit to the exclusive jurisdiction and venue of
         the state and federal courts and arbitration forum located in San
         Diego, California. THE PARTIES EXPRESSLY WAIVE THEIR RIGHTS TO A TRIAL
         BY JURY.

10.6     FURTHER ASSURANCES. Each Party will (a) furnish upon request to the
         other any further information, (b) execute and deliver to the other any
         other documents, and (c) do anything else the other Party reasonably
         requests to carry out the intent of this Agreement and the related
         documents.

10.7     WAIVER. No failure or delay in exercising any right under this
         Agreement or the related documents will operate as a waiver of that
         right. No single or partial exercise of a right will preclude any other
         or further exercise of it or any other right. To the maximum extent
         permitted by applicable Law, (a) no claim or right arising out of this
         Agreement or the related documents can be discharged by one Party, in
         whole or in part, by a waiver or renunciation of the claim or right
         unless such waiver or renunciation is in writing signed by the other
         Party; (b) no waiver that can be given by a Party will apply except in
         the specific instance for which it is given; and (c) no notice to or
         demand on one Party will be deemed to be a waiver of any obligation of

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         that Party or of the right of the Party giving the notice or demand to
         take further action without notice or demand as provided in this
         Agreement or the related documents.

10.8     ENTIRE AGREEMENT AND MODIFICATION. This Agreement supersedes all prior
         agreements between the Parties with respect to its subject matter and
         constitutes a complete and exclusive statement of the agreement among
         the parties with respect to its subject matter. This Agreement cannot
         be amended except by a written agreement executed by the Party charged
         with the amendment.

10.9     ASSIGNMENTS, SUCCESSORS, AND NO THIRD-PARTY RIGHTS. No Party can assign
         any of its rights under this Agreement without the prior consent of the
         other parties, except that the Buyer can assign any of its rights under
         this Agreement to any Buyer Subsidiary. Subject to the preceding
         sentence, this Agreement will apply to, be binding in all respects
         upon, and inure to the benefit of the successors and permitted assigns
         of the Parties. Nothing expressed or referred to in this Agreement will
         be construed to give any Person other than the Buyer Indemnified
         Parties and the Sellers Indemnified Parties any legal or equitable
         right, remedy, or claim under or with respect to any provision of this
         Agreement. This Agreement is for the sole and exclusive benefit of the
         Parties to it and their successors and assigns.

10.10    SEVERABILITY. If any provision of this Agreement is held invalid or
         unenforceable by any court of competent jurisdiction or arbitrator, the
         other provisions of this Agreement will remain in full force and
         effect. Any provision of this Agreement held invalid or unenforceable
         only in part or degree will remain in full force and effect to the
         extent not held invalid or unenforceable. If any provision of this
         Agreement is held invalid or unenforceable the Parties intend that the
         court of competent jurisdiction or arbitrator making such finding will
         substitute a valid enforceable provision therefor which, to the fullest
         extent permitted by Law, effects the economic benefits and burdens
         intended by such invalid or unenforceable provision.

10.11    SECTION HEADINGS, CONSTRUCTION. The headings of Sections in this
         Agreement are provided for convenience only and will not affect its
         construction or interpretation. All references to "Section" or
         "Sections" refer to the corresponding Section or Sections of this
         Agreement. All words used in this Agreement will be construed to be of
         the gender or number the circumstances require. Unless otherwise
         expressly provided, the word "including" does not limit the preceding
         words or terms.

10.12    GOVERNING LAW. This Agreement shall be governed by and construed in
         accordance with the domestic laws of the State of California, without
         giving effect to any other choice of law or conflict of law provision
         or rule that would cause the application of the laws of any other
         jurisdiction.

10.13    COUNTERPARTS. This Agreement can be executed (including facsimile
         signatures) in one or more counterparts, each of which will be deemed
         to be an original copy of this Agreement and all of which, when taken
         together, will be deemed to constitute one and the same agreement.

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                                11. DEFINITIONS

         For purposes of this Agreement, the following terms have the meanings
given or referred to in this Section 12:

         "Affiliate" means, with respect to any Person, any Person that,
directly or indirectly, is in control of, is controlled by, or is under common
control with, that Person. For the purposes of this definition, "control"
(including, with correlative meanings, "controlled by" and "under common control
with"), as applied to any Person, means the possession, directly or indirectly,
of the power to direct or cause the direction of the management and policies of
that Person, whether through the ownership of voting securities or by contract
or otherwise.

         "Applicable Contract" means any Contract (a) under which the Company
has any rights, (b) under which the Company has any obligation or liability, or
(c) by which the Company or any of the assets owned or used by it is bound.

         "Best Efforts" means the efforts a prudent Person who wanted to achieve
a result would use in similar circumstances to see that the result was achieved
as quickly as possible; PROVIDED, HOWEVER, that an obligation to use Best
Efforts under this Agreement does not require the Person subject to that
obligation to take actions that would result in a materially adverse change in
the benefits to that Person of this Agreement and the Transactions.

         "Breach" means (a) any inaccuracy in or breach of, or any failure to
perform or comply with, a representation, warranty, covenant, obligation, or
other provision of this Agreement, or (b) any claim (by any Person) or other
occurrence or circumstance that is or was inconsistent with the representation,
warranty, covenant, obligation, or other provision.

         "Business" means the business of the Company as conducted on the date
of this Agreement, including their operations, results of operations, financial
or other condition, assets, liabilities and personnel.

         "Business Day" means any day other than a Saturday, a Sunday or a day
when commercial banks in the City of Los Angeles, California are authorized by
law, rule or regulation to be closed.

         "Buyer" is defined in the first paragraph of this Agreement.

         "Buyer's Advisors" is defined in Section 4.1.

         "Buyer Indemnified Persons" is defined in Section 9.1.

         "Certificates" is defined in Recital No. 1.

         "Closing" is defined in Section 1.3.

         "Closing Date" means the date and time as of which the Closing actually
takes place.

         "Company" is defined in Recital No. 1 of this Agreement.

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         "Consent" means any approval, consent, filing, ratification, waiver, or
other authorization (including any Governmental Authorization).

         "Contract" means any agreement, contract, obligation, promise, or
undertaking (whether written or oral and whether express or implied) that is
legally binding.

         "Encumbrance" means any charge, claim, community property interest,
condition, equitable interest, lien, mortgage, option, pledge, security
interest, right of first refusal, or restriction of any kind, including any
restriction on use, voting, transfer, receipt of income, or exercise of any
other attribute of ownership. The term "Encumbrance," as used in this Agreement,
does not include: the lien of current Taxes not yet due and payable; mechanics',
carriers', workmens', repairmens', landlord, statutory or common law liens
either not delinquent or being contested in good faith; the rights of lessors of
personal property being leased to the Company; and immaterial imperfections of
title that do not interfere with the use of the relevant property.

         "Enforceability Exceptions" means bankruptcy, insolvency,
reorganization, moratorium or other similar laws now or later in effect relating
to creditors' rights generally and by general principles of equity and
commercial reasonableness, regardless of whether the proceeding is in equity or
at law

         "Governmental Authorization" means any approval, consent, license,
pen-nit, waiver, or other authorization issued, granted, given, or otherwise
made available by or under the authority of any Governmental Body or pursuant to
any Law.

         "Governmental Body" means any: (a) nation, state, county, city, town,
village, district, or other jurisdiction of any nature; (b) federal, state,
local, municipal, foreign, or other government; (c) governmental or
quasi-governmental authority of any nature (including any governmental agency,
branch, department, official, or entity and any court or other tribunal); (d)
multi-national organization or body; or (e) body exercising, or entitled to
exercise, any administrative, executive, judicial, legislative, police,
regulatory, or taxing authority or power of any nature.

         "Law" means any federal, state, local, municipal, foreign,
international, multinational, or other constitution, law, ordinance, principle
of common law, regulation, rule, statute, treaty, or administrative order.

         "Managing Member" shall mean Robert S. Muehlberg or his successor.

         "Membership Interest Certificates" is defined in Recital No. 1.

          "Order" means any award, decision, injunction, judgment, order,
ruling, subpoena, or verdict entered, issued, made, or rendered by any court,
administrative agency, or other Governmental Body or by any arbitrator.

         "Ordinary Course" means an action taken in connection with the Business
that is (i) consistent with actions taken in the past by the Company and in the
ordinary course of the normal day-to-day operations of the Business, and (ii)
complies with applicable Law.

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         "Organizational Documents" means (a) the articles or certificate of
incorporation and the bylaws of a corporation; (b) the partnership agreement and
any statement of partnership of a general partnership; (c) the limited
partnership agreement and the certificate of limited partnership of a limited
partnership; (d) any charter or similar document adopted or filed in connection
with the creation, formation, or organization of a Person; and (e) any amendment
to any of these documents.

         "Party" is defined in the first paragraph of this Agreement.

         "Person" means any individual, corporation (including any non-profit
corporation), general or limited partnership, limited liability company, joint
venture, estate, trust, association, organization, labor union, or other entity
or any Governmental Body.

         "Proceeding" means any action, arbitration, audit, hearing,
investigation, litigation, or suit (whether civil, criminal, administrative,
investigative, or informal) commenced, brought, conducted, or heard by or
before, or otherwise involving, any Governmental Body or arbitrator.

         "Purchase Price" is defined in Section 1.2.

         "Related Person" means with respect to a particular individual:

         (a) Each other member of his or her Family;

         (b) Any Person directly or indirectly controlled by the individual or
one or more members of his or her Family;

         (c) Any Person in which the individual or members his or her Family
hold (individually or in the aggregate) a Material Interest; and

         (d) Any Person with respect to which he or she or one or more members
of his or her Family serves as a director, officer, partner, executor, or
trustee (or in a similar capacity).

         With respect to a specified Person other than an individual:

         (a) Any Person that directly or indirectly controls, is directly or
indirectly controlled by, or is directly or indirectly under common control with
the specified Person;

         (b) Any Person that holds a Material Interest in the specified Person;

         (c) Each Person that serves as a director, officer, partner, executor,
or trustee of the specified Person (or in a similar capacity);

         (d) Any Person in which the specified Person holds a Material Interest;

         (e) Any Person with respect to which the specified Person serves as a
general partner or a trustee (or in a similar capacity); and

         (f) Any Related Person of any individual described in clause (b) or
(c).

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         For purposes of this definition, (a) the "Family" of an individual
includes (i) the individual, (ii) the individual's spouse, (iii) any other
natural person who is related to the individual or the individual's spouse
within the second degree, and (iv) any other natural person who resides with the
individual, and (b) "Material Interest" means direct or indirect beneficial
ownership (as defined in Rule 13d-3 under the Securities Exchange Act of 1934,
as amended) of voting securities or other voting interests representing at least
10% of the outstanding voting power of a Person or equity securities or other
equity interests representing at least 10% of the outstanding equity securities
or equity interests in a Person.

         "Representative" means with respect to a particular Person, any
director, officer, employee, agent, consultant, advisor, or other representative
of the Person, including legal counsel, accountants, and financial advisors.

         "Section" or "Sections" is defined in Section 11.11.

         "Securities Act" means the Securities Act of 1933, as amended, or any
successor law, and regulations and rules issued pursuant to that act or any
successor law.

         "Sellers Indemnified Persons" is defined in Section 9.1.

         "Sellers" is defined in the first paragraph of this Agreement.

         "Subsidiary" means with respect to any Person (the "Owner"), any
corporation or other Person of which securities or other interests having the
power to elect a majority of that corporation's or other Person's board of
directors or similar governing body, or otherwise having the power to direct the
business and policies of that corporation or other Person (other than securities
or other interests having that power only upon the happening of a contingency
that has not occurred) are held by the Owner or one or more of its Subsidiaries;
when used without reference to a particular Person, "Subsidiary" means a
Subsidiary of the Company.

         "Threatened" means, with respect to a claim, Proceeding, dispute,
action, or other matter, that any written demand or statement has been made, any
written notice has been given, or that another event has occurred that would
lead a prudent Person to conclude that such a claim, Proceeding, dispute,
action, or other matter has a substantial possibility of being asserted,
commenced, taken, or otherwise pursued in the future.

         "Trade Name" means all business names, trading names, registered and
unregistered trademarks, service marks and applications.

         "Transactions" means all of the transactions contemplated by this
Agreement, including (a) the sale of the Certificates by the Sellers to the
Buyer; and (b) the performance by the Buyer and the Sellers of their respective
covenants and obligations under this Agreement.

                  The Parties have executed and delivered this Equity Purchase
Agreement as of the date at the beginning of this Equity Purchase Agreement.

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THE BUYER:                                     THE SELLERS:

MIRACOR DIAGNOSTICS, INC.

By:
   --------------------------------            --------------------------------
   Name:  M. Lee Hulsebus                      Robert S. Muehlberg
   Title:   Chief Executive Officer

                                               --------------------------------
                                               Annie L. Muehlberg

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