POSITRON CORP
DEF 14A, 1999-11-30
ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                           SCHEDULE 14A INFORMATION

                Proxy Statement Pursuant to Section 14(A) of the
                         Securities Exchange Act of 1934


Filed by the Registrant [ X ]
Filed by a Party other than the Registrant [ ]

Check the appropriate box:

[ ] Preliminary Proxy Statement
[ ] Confidential, for Use of the Commission Only (as permitted by Rule
    14a-6(e)(2))
[X] Definitive Proxy Statement
[ ] Definitive Additional Materials
[ ] Soliciting Material Pursuant to ss.240.14a-11(c) or ss.240.14a-12


                                     POSITRON
- --------------------------------------------------------------------------------
               (Name of Registrant as Specified in Its Charter)


- --------------------------------------------------------------------------------
    (Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

[X] No fee required.
[ ] Fee computed on the table below per Exchange Act Rules 14a-6(i)(4) and 0-11.

    (1) Title of each class of securities to which transaction applies: N/A

    (2) Aggregate number of securities to which transaction applies: N/A

    (3) Per  unit price  or  other  underlying  value  of  transaction  computed
        pursuant  to Exchange Act  Rule 0-11 (Set forth  the amount on which the
        filing fee is calculated and state how it was determined): N/A

    (4) Proposed maximum aggregate value of transaction: N/A

    (5) Total fee paid: N/A

[ ] Fee paid previously with preliminary materials.

[ ] Check box if any part of the fee is offset as provided by Exchange  Act Rule
    0-11(a)(2)  and  identify the filing for which the  offsetting  fee was paid
    previously.  Identify the previous filing by registration  statement number,
    or the form or schedule and the date of its filing.

    (1) Amount Previously Paid: N/A

    (2) Form, Schedule or Registration Statement No.: N/A

    (3) Filing Party: N/A

    (4) Date Filed: N/A


<PAGE>


                                    POSITRON

                       1304 Langham Creek Drive, Suite 300
                              Houston, Texas 77084


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


                    NOTICE OF ANNUAL MEETING OF SHAREHOLDERS

                                December 17, 1999


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

     TO THE SHAREHOLDERS:

     NOTICE IS HEREBY GIVEN that the Annual Meeting of  Shareholders of Positron
Corporation,  a Texas  corporation  (the  "Company"),  will  be held on  Friday,
December 17, 1999,  at 10:00 a.m.,  local time,  at the  Company's  headquarters
offices located at 1304 Langham Creek Drive,  Suite 300,  Houston,  Texas 77084,
for the following purposes:
         1. To elect  directors  to serve for the  ensuing  year and until their
            successors are elected.
         2. To approve the adoption of the 1999 Stock Option Plan and the
            authorization  of  4,000,000 common shares issuable pursuant to that
            Plan.
         3. To approve the adoption of the 1999  Non-Employee  Directors'  Stock
            Option Plan and the  authorization of 500,000 common shares issuable
            pursuant to that Plan.
         4. To  approve  the  adoption  of  the  1999  Stock  Bonus Plan and the
            authorization  of 1,000,000 common shares issuable  pursuant to that
            Plan.
         5. To approve the adoption of the 1999 Employee Stock Purchase Plan and
            the authorization of 500,000 common shares issuable pursuant to that
            Plan.
         6. To  ratify  the  appointment  of  Ham,  Langston  &  Brezina  as the
            Company's  independent  auditors for the fiscal year ended  December
            31, 1998.
         7. To  transact  such other  business as may  properly  come before the
            meeting or any  adjournment  thereof.

     The  foregoing  items of  business  are more fully  described  in the Proxy
Statement  accompanying this Notice.

     Only  shareholders  of record at the close of business on November 16, 1999
are entitled to notice of and to vote at the meeting and at any  continuation or
adjournment thereof.


                                             By order of the Board of Directors,


                                             /s/ Gary H. Brooks

                                             Gary H. Brooks
                                             Secretary
Houston, Texas
November 29, 1999

- --------------------------------------------------------------------------------
         ALL SHAREHOLDERS ARE CORDIALLY INVITED TO ATTEND THE MEETING IN
         PERSON. HOWEVER, TO ENSURE YOUR REPRESENTATION AT THE MEETING,
              YOU ARE URGED TO VOTE, SIGN, AND RETURN THE ENCLOSED
              PROXY AS PROMPTLY AS POSSIBLE IN THE POSTAGE-PREPAID
                      ENVELOPE ENCLOSED FOR THAT PURPOSE.
- --------------------------------------------------------------------------------
<PAGE>
                                    POSITRON

                       1304 LANGHAM CREEK DRIVE, SUITE 300
                              HOUSTON, TEXAS 77084



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

                                 PROXY STATEMENT

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

GENERAL

      The  enclosed  proxy is  solicited  on behalf of the Board of Directors of
Positron Corporation, a Texas corporation (the "Company"), for use at the annual
meeting of  shareholders  to be held on December  17,  1999 at 10:00 a.m.  local
time, at which  shareholders of record of voting securities on November 16, 1999
will be entitled to vote. The voting securities of the Company are shares of its
common  stock  and of its  Series A 8%  cumulative  redeemable  preferred  stock
("Series A preferred stock.") Voting with the common stock, each share of Series
A  preferred  stock  entitles  the holder to that  number of votes  equal to the
number  of shares of common  stock in which  such  shares of Series A  preferred
stock  would be  converted.  On  October  31,  1999 the  Company  had issued and
outstanding  57,534,660  shares of common  stock and 980,948  shares of Series A
preferred  stock which could be converted  into 980,948  shares of common stock.
The annual meeting will be held at the Company's headquarters offices located at
1304 Langham Creek Drive, Suite 300, Houston, Texas 77084.


VOTING AND REVOCABILITY OF PROXIES

      All  properly  executed  proxies that are not revoked will be voted at the
meeting  in  accordance  with  the  instructions   contained  therein.   Proxies
containing no  instructions  regarding  the  proposals  specified in the form of
proxy  will be voted  FOR  approval  of all  proposals  in  accordance  with the
recommendation of the Company's Board of Directors. Any person giving a proxy in
the form  accompanying  this statement has the power to revoke such proxy at any
time before its exercise.  The proxy may be revoked by filing with the Secretary
of the Company at the  Company's  principal  executive  office an  instrument of
revocation or a duly executed  proxy bearing a later date, or by filing  written
notice of  revocation  with the  secretary of the meeting prior to the voting of
the proxy or by voting the shares subject to the proxy by written ballot.

      Directors  are  elected by a plurality  of the voting  power of the common
stock and Series A preferred stock voting together a class. Cumulative voting is
not  permitted in the  election of  directors.  Votes that are withheld  will be
excluded entirely from the vote and will have no effect. Approval of each of the
proposals regarding the 1999 Stock Option Plan, the 1999 Non-Employee Directors'
Stock Option Plan,  the 1999 Stock Bonus Plan,  the 1999 Employee Stock Purchase
Plan, and ratification of the Company's outside independent accountants requires
the  affirmative  vote of the  holders  of a  majority  of the votes cast at the
annual meeting by the  shareholders of common stock and Series A preferred stock
as a class and entitled to vote,  with  abstentions  not counted as votes for or
against.

SOLICITATION

      The  Company  will  bear  the  entire  cost  of  solicitation,   including
preparation, assembly, printing, and mailing of this proxy statement, the proxy,
and any additional material furnished to sharehold-

<PAGE>

ers. Original  solicitation of proxies by mail may be supplemented by telephone,
telegram, or personal  solicitation by directors,  officers, or employees of the
Company; no additional  compensation will be paid for any such services.  Except
as described above, the Company does not intend to solicit proxies other than by
mail.

      Arrangements  will also be made with brokerage firms and other custodians,
nominees and fiduciaries to forward proxy material to certain  beneficial owners
of the Company's  Common Stock,  and the Company will  reimburse  such brokerage
firms,  custodians,   nominees  and  fiduciaries  for  reasonable  out-of-pocket
expenses incurred by them in connection therewith.

      The Company  intends to mail this proxy statement on or about November 30,
1999.

      The Annual Report to Shareholders covering the Company's fiscal year ended
December 31, 1998,  including  audited financial  statements,  and the Quarterly
Report on Form 10-QSB for the period ended September 30, 1999, are enclosed.


DISSENTERS' RIGHTS

      Under Texas law, the holders of common stock and  preferred  stock are not
entitled to any dissenters' rights in connection with any of the proposals to be
considered at the meeting.


SHAREHOLDER PROPOSALS FOR NEXT ANNUAL MEETING

      Proposals  of  shareholders  that  are  intended  to be  presented  at the
Company's 2000 annual meeting of shareholders must be received by the Company no
later than  January 7, 2000 in order to be included in the proxy  statement  and
proxy relating to that meeting.


                                  PROPOSAL ONE
                              ELECTION OF DIRECTORS

      Each director to be elected will hold office until the next annual meeting
of shareholders  and until his successor is elected and has qualified,  or until
his death, resignation, or removal.

      There are four nominees for the four Board positions currently established
pursuant to the  Company's  Bylaws.  Three of the four  nominees  are  currently
directors of the Company. Each person nominated for election has agreed to serve
if elected,  and  management  has no reason to believe  that any nominee will be
unavailable to serve. Unless otherwise  instructed,  the proxy holders will vote
the  proxies  received  by them  for the four  nominees  named  below.  The four
candidates  receiving  the  highest  number of  affirmative  votes of the shares
entitled to vote at the annual meeting will be elected directors of the Company.

                                       2
<PAGE>

                      MANAGEMENT RECOMMENDS A VOTE FOR EACH
                    OF THE NOMINEES FOR DIRECTOR NAMED BELOW

NOMINEES

      Four directors will be elected at the annual meeting to serve for one year
expiring on the date of the annual meeting in 2000.  Proxies can be voted for no
more than four nominees.  Set forth below is information regarding the nominees,
including information furnished by them.


                                PERCENTAGE OF 1999
                                BOARD OR COMMITTEE
NAME                   AGE      MEETINGS ATTENDED(1)       EXECUTIVE POSITION
- ------                -----    ----------------------    ----------------------
S. Lewis Meyer          54              100%
Gary H. Brooks          51              100%             President,
                                                         Chief Financial Officer
                                                         (Acting) &
                                                         Secretary
Gary B. Wood, Ph.D.     48              100%
Antonio P. Falcao       27             N/A(2)

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

1    The  percentage of  meetings attended is based on the total number of Board
     and Committee meetings which the particular director was eligible to attend

2    Mr. Falcao is a nominee for election as a director.  He did not serve as a
     director during 1999 or any prior year.

     Mr.  Meyer was  appointed  to the Board on January 22, 1999  in  connection
with a series of  agreements  entered  into by Company and Imatron Inc. of South
San  Francisco  ("Imatron")  in May 1998,  pursuant to which  Imatron  purchased
9,000,000  shares of  Company  common  stock,  representing  a  majority  of the
Company's common stock at the time.  ("Imatron  Transaction.").  Also on January
22,  1999 Mr.  Meyer was  appointed  as Chairman  of the Board.  Mr.  Meyer also
continues to serve as Chief Executive Officer of Imatron,  which position he has
held since June 23, 1993.  From April 1991 until  joining  Imatron,  he was Vice
President,  Operations  of Otsuka  Electronics  (U.S.A.),  Inc.,  Fort  Collins,
Colorado,   a   manufacturer   of  clinical  MR  systems  and   analytical   NMR
spectrometers.  From  August  1990 to April  1991 he was a  founding  partner of
Medical Capital Management,  a company engaged in providing  consulting services
to medical  equipment  manufacturers,  imaging  services  providers  and related
medical  professionals.  Prior  thereto  he was  Founder,  President  and  Chief
Executive  Officer of  American  Health  Services  Corp.,  (now  Insight  Health
Services) a developer and operator of diagnostic  imaging and treatment centers.
Mr. Meyer is a director of Imatron,  and of FiNet.com,  Inc. and the Chairman of
its Compensation  Committee.  Mr. Meyer received his B.S. degree in Physics from
the University of the Pacific,  Stockton,  California in 1966, an M.S. degree in
Physics  from Pursue  University  in 1968,  and a Ph.D.  in Physics  from Purdue
University in 1971.

     Mr. Brooks has served as a director since January 22, 1999, appointed  also
in connection with the Imatron  Transaction.  Also on that date he was appointed
as  President,  Secretary  and  Treasurer  of the  Company  and  served in those
capacities on a part-time  basis until  September 1, 1999, when he assumed those
responsibilities  on a  full-time  basis.  Prior to  joining  the  Company  on a
full-time   basis,   Mr.  Brooks  served  as  Vice   President  of  Finance  and
Administration, Chief Financial Officer and Secretary for Imatron since December
1993.  Prior to joining Imatron he was Chief Financial  Officer and Director for
five years at Avocet, a privately-held  sports electronics  manufacturer located
in Palo  Alto,  CA. Mr.  Brooks  received  his B.A.  in Zoology in 1971 from the
University of California,  Berkeley,  and an M.B.A. in Finance and Accounting in
1973 from the University of California, Los Angeles.

     Dr. Wood has served as a director  from April 1990 to the present,  and  as
its Chairman until January 1999.  From October 1, 1994 to December 31, 1995 when
Dr. Werner Haas was appointed to


                                       3
<PAGE>

those positions,  he also acted as President and Chief Executive  Officer of the
Company.  He assumed  those  offices  again  from  February  1997 when Dr.  Haas
resigned until January 1999 when Mr. Brooks was appointed President. Dr. Wood is
also  President  of  Concorde  Financial  Corporation,   a  private  investment,
management  and  consulting  firm which he  founded in 1981 and is the  founder,
chairman and a principal  shareholder of OmniMed Corporation,  a venture capital
investment  firm  founded in 1986.  Dr. Wood is also the founder and Chairman of
Uro-Tech  Management  Corporation  (now a wholly  owned  subsidiary  of OmniMed)
founded in 1983.  Both  Uro-Tech  and OmniMed  specialize  in  investing  in the
biotechnology  and  health  care  industries.  Dr.  Wood  holds  a BS  and MS in
Electrical Engineering (with special emphasis in biomedical instrumentation) and
an interdisciplinary Doctorate of Philosophy from Texas Tech University. Certain
of the entities controlled by Dr. Wood are principal shareholders of Positron.

      Antonio P.  Falcao is a nominee for  director.  Since 1994 he has been the
Chief Financial Officer for several companies of the A. Amorim Group, a business
group  based in Portugal  that owns Banco  Nacional  de Credito  Imobiliario,  a
Portugese real estate bank. An affiliate of Amorim is a principal shareholder of
the Company.  The A. Amorim  Group,  which is affiliated  with Americo  Ferreira
Amorim,  also has  interest  in the  cork,  textile,  hotel,  oil,  finance  and
telecommunications  industries.  In addition, since February 1999 Mr. Falcao has
served as a director of FiNet.com,  Inc., an on-line  mortgage  banking company.
Mr. Falcao  received his degree in Finance and Economics  from the University of
Oporto.


TRANSACTIONS WITH MANAGEMENT AND OTHERS

      S. Lewis  Meyer,  pursuant  to  authorization  of the Board of  Directors,
borrowed  $10,000 from the Company in June 1999  pursuant to a  promissory  note
bearing 7.0% simple interest,  with interest payable quarterly beginning October
1, 1999.  The purpose of the loan was to enable Mr. Meyer to purchase  1,500,000
warrants granted to him at that time.

      Gary H.  Brooks,  pursuant  to  authorization  of the Board of  Directors,
borrowed  $20,000 from the Company in June 1999  pursuant to a  promissory  note
bearing 7.0% simple interest,  with interest payable quarterly beginning October
1,1999.  The purpose of the loan was to enable Mr. Brooks to purchase  3,000,000
warrants granted to him at that time.

      In January 1995 the Company and Dr. Wood  extended an existing  Consulting
Agreement whereby Dr. Wood continued to provide certain  managerial,  financial,
marketing and organization services to the Company. The Company incurred fees of
approximately  $80,000 in each of 1996 and 1997 pursuant to the  Agreement,  and
fees of  approximately  $80,000 in 1998 as payment  for Dr.  Wood's  services as
Chief Executive Officer during that year. By its terms, the Agreement expired as
of  December  31, 1998 and was not  renewed.  We paid Dr. Wood fees of $6,667 in
1999 for his  services  as  President  and  Chief  Executive  Officer  until the
appointment of Gary Brooks as President on January 22, 1999.

      During  1995  and  1996,  in order to fund  its  activities,  the  Company
borrowed a total of $1,313,000 from Uro-Tech,  Ltd., an affiliate of the Company
and a Texas  limited  partnership.  The  general  partner of Uro-Tech is OmniMed
Corporation, of which Dr. Wood beneficially owns 63.7% of the outstanding stock.
The loan bore  interest  at 13.8% per year,  matured  on April 30,  1997 and was
thereafter  extended in connection  with the Imatron  Transaction.  The Uro-Tech
loan was collateralized by liens and security interests  encumbering most of the
Company's assets, which security interest was thereafter  subordinated to a loan
from Imatron as part of the Imatron  Transaction.  In  connection  with the loan
from  Uro-Tech  in 1995 and 1996,  the  Company  granted  Uro-Tech  warrants  to
purchase  67,500 shares of common stock at an exercise  price of $2.00 per share
exercisable  through  February 7, 2001.  The Company  fully retired the Uro-Tech
Loan,  including  all  principal  and  interest  due, in  September  1999 and in
connection therewith and Uro-Tech's  forgiveness of certain sums of interest due
it by the Company,  replaced and cancelled the warrant to purchase 67,500 common
shares at an exercise  price of $2.00 with a warrant to purchase  100,000 common
shares at an exercise  price of $1.00.  The  replacement  warrant is exercisable
through September 20, 2001.

                                       4
<PAGE>

      The Company and Mr. Brooks entered into an Employment Agreement, effective
with his  appointment  as  President  on January 22, 1999  pursuant to which Mr.
Brooks  agreed to be  employed  by the  Company  on a  part-time  basis from the
effective date through August 31, 1999 and thereafter on a full time basis.  Mr.
Brook's initial  appointment is as President.  Pursuant to the Agreement,  which
runs  initially  through  June 15,  2000 and then on a rolling  six-month  basis
thereafter, the gross amount of Mr. Brooks's base salary was $1,000 monthly from
January 22, 1999 to June 15, 1999,  $3,416.67 monthly from June 15, 1999 through
August 31, 1999, and $185,000 on an annualized  basis on and after  September 1,
1999.  Mr.  Brooks  is also  entitled  to  reimbursement  for up to  $20,000  of
relocation  expenses to  relocate  his  residence  to  Houston,  Texas,  an auto
allowance  of $500 per month,  the right to  purchase  for  $20,000 a warrant to
purchase up to three million shares of the Company's common stock exercisable at
$0.30 per share,  participation  in the Company's  benefit plans consistent with
other  executives,  and severance on termination  without cause in the amount of
the  greater of the base  salary he would have  earned to the end of the term or
six months.  The  warrants  Mr.  Brooks can purchase  vest  immediately  but are
subject to the Company's  right of  repurchase,  which right lapses 25% on grant
and the  remainder  quarterly  over the  next  three  years.  In the  event  his
employment is terminated by the Company without cause or on a change of control,
the Company's  repurchase  right  regarding his warrants lapses entirely and any
other equity participation he may have in company securities vests immediately.


BOARD COMMITTEES AND MEETINGS

      During 1999 the Board of Directors  held three  meetings in person and one
action  by  unanimous  written  consent.  The  Board of  Directors  has an Audit
Committee  whose  function  is to  recommend  the  engagement  of the  Company's
independent  accountants,  approve services  performed by such accountants,  and
review and  evaluate  the  Company's  accounting  system and system of  internal
controls.   The  Audit  Committee,   which  consists  entirely  of  non-employee
directors,  currently  consists  of Messrs.  Meyer and Wood and held one meeting
during the fiscal year.

      The Board of  Directors  also has a  Compensation  Committee  which  makes
recommendations  to the Board of Directors  concerning  salaries  and  incentive
compensation  paid to officers;  administers  the Company's  1994 and 1999 Stock
Option Plans,  including the grant of options, the 1999 Non-Employee  Directors'
Stock Option Plan,  the 1999 Stock Bonus  Incentive  Plan, and the 1999 Employee
Stock Purchase Plan; and performs such other functions regarding compensation as
the Board may delegate.  The Compensation  Committee,  which consists of Messrs.
Meyer and Wood, held one meeting during the year.

COMPENSATION OF DIRECTORS

      We reimburse  directors  for their  reasonable  expenses  associated  with
attending  meetings  of the Board.  Directors  who are  full-time  employees  of
Positron  Corporation  are not separately  compensated  for their service on the
Board.  In  addition,  until  January  22, 1999 we paid  non-employee  directors
$12,500  annually for their services and  attendance at regular Board  meetings,
and $500 for each additional Board or committee meeting attended,  not to exceed
an  additional  $2,500 per year.  The  Chairman  of the Board also  received  an
additional annual retainer of $2,000. Due to the financial liquidity problems we
were having during this period, we made no cash payments to any directors during
1996,  1997 of 1998 for their services as director.  Since January 22, 1999, and
until further notice,  non-employee directors are not separately compensated for
their  services on the Board,  although they continue to be reimbursed for their
reasonable expenses associated with attending board and committee meetings.

      Non-Employee  Director  Options.  In connection with their services to the
Company,  directors  who were not  employees  of the  Company  were  entitled to
receive an initial  grant of 10,500  options to purchase  common stock under the
1994 Stock  Option Plan (the "1994  Stock  Option  Plan")  upon  election to the
Board,  and  subsequent  grants at each  reelection to the Board of an option to
purchase that number of common shares equaling the quotient  derived by dividing
$15,000 by the fair  market


                                       5
<PAGE>

value of the  common  stock on the grant  date.  The  options  vested  one-third
immediately  and  one-third on each of the next two  anniversaries.  Unexercised
options expired on the optionee  ceasing to be a director,  unless due to death,
disability,  or the  optionee not being  nominated  or elected to serve  despite
his/her willingness to do so.

      Effective  October 6, 1999 the Board terminated the 1994 Stock Option Plan
and adopted other plans in its place, including the 1999 Non-Employee Directors'
Stock Option Plan.  Provided it is approved by the  shareholders  (SEE  PROPOSAL
THREE OF THIS STATEMENT),  upon being appointed to the Board,  each non-employee
director will be entitled  automatically to receive an option to purchase 25,000
shares of common  stock at an  exercise  price  equal to 85% of the fair  market
value of the common stock on the date of grant. In addition, so long as the Plan
is in effect and there are shares available for grant,  each director in service
on January 1 of each year (provided the director has served  continuously for at
least the preceding 30 days) is entitled to receive an option to purchase 25,000
shares of common  stock at an  exercise  price  equal to 85% of the fair  market
value of the  common  stock on the date of  grant.  Initial  options  as well as
annual  options  granted  under  the  Plan  are  subject  to one of two  vesting
schedules, either vesting over four years or vesting fully on the date of grant.
In the latter event,  the common stock acquired upon exercise of such options is
subject to the Company's  right of repurchase,  which right lapses in four equal
installments, beginning on the first anniversary of the date of grant.

      The Board may suspend or terminate the Non-Employee Directors' Plan at any
time. If no such  termination  occurs,  the  Non-Employee  Directors'  Plan will
terminate by its terms on December 31, 2009.

      Employee  Director  Compensation.  Employees who serve as directors of the
Company (Mr. Brooks) receive no additional  compensation  for such service.  Mr.
Brooks is also a named executive  officer of the Company and his compensation is
reflected  in  the  Summary  Compensation  Table  contained  elsewhere  in  this
statement.

EXECUTIVE OFFICERS

      Our executive  officers are elected by the Board of Directors and serve at
the Board's  discretion.  The current executive officers are Gary H. Brooks, who
serves as the President,  Chief Financial  Officer  (Acting) and Secretary,  and
John J. Ariatti, who serves as Vice President, Sales and Marketing.

         SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

      The following tables, based in part upon information supplied by officers,
directors and principal  shareholders,  set forth certain information  regarding
the ownership of the Company's  voting  securities as of October 31, 1999 by (i)
all those known by the Company to be beneficial owners of more than five percent
of any class of the Company's voting securities;  (ii) each director; (iii) each
named executive  officer;  and (iv) all executive  officers and directors of the
Company as a group.  Unless  otherwise  indicated,  each of the shareholders has
sole voting and investment power with respect to the shares  beneficially owned,
subject to community property laws where applicable.

                                       6
<PAGE>


SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS(A)
<TABLE>
<CAPTION>
                                                          % OF
       NAME AND ADDRESS               NUMBER OF        OUTSTANDING      NUMBER OF SHARES        % OF OUTSTANDING
         OF BENEFICIAL                SHARES OF          COMMON            OF SERIES A              SERIES A
             OWNER                  COMMON STOCK          STOCK          PERFERRED STOCK         PREFERRED STOCK
     --------------------          --------------      ------------    --------------------     ----------------
<S>                                   <C>                 <C>                <C>                      <C>
Uro-Tech Ltd.(b)                      1,174,787           2.0%               433,329                  44.2%

Imatron Inc.(c)                       9,000,000           15.6%

Banco Privado
Portuges(d)                           5,000,000           8.7%

Amorim
Dessenvolvimento,
S.G.P.S., S.A.(e)                     5,000,000           8.7%

Dapicod Investments
Co., Ltd.(f)                          5,000,000           8.7%
</TABLE>
- ------------------------

(a)   Security  ownership  information  for  beneficial  owners  is  taken  from
      statements filed with the Securities and Exchange  Commission  pursuant to
      Sections 13(d), 13(g) and 16(a) and information made known to the company.

(b)   Includes  424,787 shares of common stock owned by Uro-Tech,  Ltd., a Texas
      limited  partnership,  the general partner of which is OmniMed Corporation
      ("OmniMed").  Includes  433,329  shares  of  common  stock  issuable  upon
      conversion  of  433,329  shares  of  Series  A 8%  cumulative  convertible
      redeemable  preferred stock, and 216,671 warrants to purchase common stock
      acquired upon  conversion of $650,000 in principle  amount of the Uro-Tech
      loan.  Also includes  100,000 shares  issuable upon conversion of warrants
      acquired in connection  with extending and retiring the Uro-Tech loan. Dr.
      Wood is a director and beneficially  owns 63.7% of the outstanding  voting
      securities of OmniMed.  All shares beneficially owned by OmniMed have been
      included in the total number of shares beneficially owned by Dr. Wood.

(c)   Represents all securities purchased in connection with Imatron Transaction
      See Proposal 1 of this Statement.  The headquarters offices of Imatron are
      located at 389 Oyster Point blvd., So. San Francisco, CA 94080.

(d)   R. Muezinho da Silveira, 12, 1250 Lisbon, Portugal.

(e)   Edificio  Amorim, Rua  de Melandas No. 380 (Apartado 20), 4536 Mozelos VFR
      Codex, Portugal.

(f)   Edificio  Peninsula,  Praca  do  Bom  Sucesso 127/131 - 7th, ESC. 702, Ap.
      551236EC Galiza, 4051-401 Porto, Portugal.

                                       7
<PAGE>

SECURITY OWNERSHIP OF DIRECTORS AND EXECUTIVE OFFICERS

      The table below presents the security ownership of the Company's Directors
and Named Executive Officers.

<TABLE>
<CAPTION>
                                                             AMOUNT AND NATURE OF
TITLE OF CLASS       NAME OF BENEFICIAL OWNER              BENEFICIAL OWNERSHIP (AA)     PERCENT OF CLASS (BB)
- --------------       ----------------------------          --------------------------    ---------------------
<S>                  <C>                                         <C>                            <C>
Common               Gary H. Brooks                              3,050,000(cc)                  5.0%
Common               S. Lewis Meyer                              1,579,000(dd)                  2.7%
Common               Gary B. Wood, Ph.D                             80,793(ee)                    *
Common               John J. Ariatti                                40,625(ff)                    *
Common               All Directors and Executive
                     Officers as a Group                         4,750,418                      7.7%
</TABLE>
- -----------------------

*     Does not exceed 1% of the referenced class of securities.

(aa)  Ownership is direct unless indicated otherwise.

(bb)  Calculation  based  on  57,534,660 common shares outstanding as of October
      31, 1999.

(cc)  Includes 50,000 shares owned directly and 3,000,000  shares  issuable upon
      the  exercise  of  warrants that are exercisable as of October 31, 1999 or
      that will become exercisable within 60 days thereafter.

(dd)  Includes 79,000 shares owned directly and 1,500,000  shares  issuable upon
      the exercise of warrants that are exercisable as of October 31,  1999 or
      that will become exercisable within 60 days thereafter.

(ee)  Includes  7,304 shares of common stock issuable upon exercise of a warrant
      held by Dr. Wood and 50,000 shares of common stock  issuable upon exercise
      of options granted to Dr. Wood in March 1995, 7,000 shares of common stock
      issuable  upon  exercise  of options  granted to Dr. Wood in June 1994 and
      1,209 shares of common stock issuable upon exercise of options  granted to
      Dr.  Wood in June  1995.  Also  includes  15,280  shares of  common  stock
      beneficially  owned by  OmniMed.  Dr.  Wood owns 63.7% of the  outstanding
      voting securities of OmniMed.

(ff)  Mr.  Ariatti was granted an option to  purchase  650,000  shares of common
      stock in  connection  with his  employment,  none of which options has yet
      vested, but 40,625 of which will vest within 60 days of October 31, 1999.

                             EXECUTIVE COMPENSATION


SUMMARY COMPENSATION OF NAMED EXECUTIVES

      The Summary Compensation Table shows certain compensation  information for
each person who served as Chief Executive  Officer during the year and the other
most highly compensated executive officers whose aggregate compensation exceeded
$100,000 for services rendered in all capacities during fiscal year 1998 and for
the first 10 months of fiscal year 1999 (collectively  referred to as the "Named
Executive  Officers").  Compensation  data is shown for the fiscal  years  ended
December  31,  1998 and 1997 and for the first ten  months of fiscal  year 1999.
This information  includes the dollar value of base salaries,  bonus awards, the
number of stock options granted, and certain other compensation, if any, whether
paid or deferred.


                                       8
<PAGE>

SUMMARY COMPENSATION TABLE


                           SUMMARY COMPENSATION TABLE
<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------------
                                                                               LONG TERM
                                                                             COMPENSATION
                                                  ANNUAL COMPENSATION           AWARDS
                                                                               OPTIONS/           ALL OTHER
NAME AND PRINCIPAL POSITION       YEAR      SALARY($)(a)          BONUS          SARS          COMPENSATION(b)
- ---------------------------       -----     -------------        -------    ---------------    ---------------
<S>                               <C>          <C>                 <C>                <C>               <C>
Gary H. Brooks,                   1999         $48,375(c)         -0-                -0-               -0-
  President
Gary B. Wood, Ph.D.,              1999           6,667            -0-                -0-               -0-
  President and Chief             1998          80,004            -0-                -0-
  Executive Officer (2/1/97       1997          33,333            -0-                -0-
  to 1/22/99)
John J. Ariatti                   1999         $15,801(d)         -0-            650,000(d)
Howard Baker                      1998        $155,739(e)         -0-                -0-            $1,986
                                  1997         $86,008            -0-                -0-

</TABLE>
- -----------------------------

(a)   Amounts  shown include cash and non-cash  compensation earned with respect
      to the year shown above.

(b)   Represents the Company's matching contributions to its 401(k) plan.

(c)   Mr. Brooks served as President on a part-time  basis from January 22, 1999
      until September 1, 1999, and thereafter on a full-time basis.  This number
      reflects  compensation  paid  through  October 31, 1999.  Mr.  Brooks also
      received $20,000 in reimbursement of relocation expenses in 1999.

(d)   Mr. Ariatti was appointed Vice  President,  Sales and Marketing  effective
      September 27, 1999. This number reflects  compensation  paid him from that
      date through  October 31, 1999. In connection  with his  employment he was
      granted  options to  purchase  650,000  shares of  Positron  common  stock
      exercisable at $0.47, the market price of the stock on the grant date. The
      options vest  quarterly  over the first four years from the date of grant.
      None of the options is currently  exercisable,  but 40,625 are exercisable
      within 60 days of October 31, 1999.

(e)   Mr. Baker served as EVP, Sales and Marketing  until  December 1998 when he
      resigned.


INCENTIVE AND REMUNERATION PLANS


1999 STOCK BONUS INCENTIVE PLAN

      In October  1999 the Board  adopted a Stock Bonus  Incentive  Plan,  which
provides,  subject to shareholder approval (SEE PROPOSAL FOUR OF THIS STATEMENT)
for the  grant of  bonus  shares  to any  Positron  employee  or  consultant  to
recognize  exceptional  service and performance beyond the service recognized by
the  employee's  salary or  consultant's  fee. The Stock Bonus Plan is currently
administered  by the Board or by delegation to the Stock Bonus  Committee.  Each
grant of bonus shares is in an amount  determined by the Board,  up to a maximum
of 40% of the  participant's  salary in the case of any employee or, in the case
of a consultant,  in an amount  determined by the Board in its  discretion.  The
shares  becomes  exercisable  according to a schedule to be  established  by the
Board at the time of grant. The Committee has exclusive  authority to act on the
following  matters:  selection of the persons  among the  eligible  participants
(which  consists of all  employees,  including  officers  and  directors  of the
Company,  and  consultants  to the Company) who are to  participate in the Stock


                                       9
<PAGE>

Bonus Plan; the determination of each participant's  stock bonus opportunity and
actual bonus;  changes in the Plan,  and all other  actions the Committee  deems
necessary or advisable to administer the Plan.

      The total  number of shares of Common  Stock which may be issued under the
Stock Bonus Plan is 1,000,000  shares with no more than 200,000 shares available
for issuance in any single calendar year.


STOCK PARTICIPATION AND OPTION PLANS


1987 STOCK OPTION PLAN

      The Company  adopted an Amended and  Restated  1987 Stock Option Plan (the
"1987 Plan") which was adopted by the Board of Directors and shareholders of the
Company  effective  June 1, 1987,  was  amended on March 13,  1991,  and further
amended in March 1992,  September  1992 and November 1993. The plan provided for
options  exercisable  for up to a total of 188,522  shares of Common Stock.  The
1987 Plan provided that incentive  options which  satisfied the  requirements of
Section 422 of the Internal Revenue Code of 1986, as amended (the "Code"), could
be granted to executives and other key employees  (including officers who may be
members of the Board of Directors) of the Company and that nonqualified  options
could be granted to such directors,  executive employees and other key employees
(including  officers  who  may be  members  of the  Board  of  Directors  of the
Company),  each as the Board of Directors  determined  from time to time. If any
options  granted  under  the 1987  Plan  expired  or  terminated  without  being
exercised, the shares covered thereby were added back to the shares reserved for
issuance under the 1987 Plan.

      The Compensation Committee of the Board of Directors administered the 1987
Plan.  The 1987 Plan  provided that options could be granted at no less than 75%
of the fair market  value of the Common  Stock on the date of the grant (or 110%
of the fair market value for options  granted to  participants  who owned 10% or
more of the Company's outstanding Common Stock).

      The Compensation Committee determined,  at its discretion,  the persons to
be granted options,  option prices, date of grant and vesting periods,  although
no option could extend for longer than ten years (five years for incentive stock
options granted to 10% or greater  shareholders).  Payment of the exercise price
were  made by check or in such  other  form as was  acceptable  to the  Board of
Directors including, under certain circumstances,  the delivery of Common Stock.
No options could be granted under the 1987 Plan after June 1, 1997.

      Options were not  transferable by the optionee,  other than by will or the
applicable  laws of descent and  distribution.  In the event of  termination  of
employment,  the option expired on the earlier of its stated expiration or three
months (six months in the case of the  optionee's  death) after  termination  of
employment.

      In the event of a recapitalization,  reorganization or other change in the
Company's capital structure or a merger or consolidation or the sale or transfer
of all or part of its  assets,  the 1987 Plan  provided  for  adjustment  of the
shares of Common Stock covered by the 1987 Plan and outstanding  options granted
pursuant to the 1987 Plan.

      The 1987 Plan  could be  amended  at any time by the  Board of  Directors,
provided that amendments increasing the number of shares issuable under the 1987
Plan and  amendments  changing  the  eligibility  of  participants  required the
approval of the holders of at least a majority of the outstanding Common Stock.

      In November 1993, the Board of Directors  canceled all of the  outstanding
options under the 1987 Plan.  Concurrently with such  cancellation,  the Company
entered into agreements with the holders of the canceled  options  providing for
the  reissuance  of such options at an exercise  price of $6.1875 per share.  In
April 1994, the Company issued options replacing the previously canceled options
and issued  additional  options for a total of 185,229 shares of Common Stock at
an exercise price of $6.1875 per share. All of such options vested on January 1,
1995.

                                       10
<PAGE>

      On February 23, 1995, the exercise price of all outstanding  options under
the 1987 Plan was amended to reflect a new  exercise  price of $2.625 per share,
which was the market  price of the Common Stock on such date.  In  addition,  on
such date an additional  62,500  options were awarded under the 1987 Plan at the
$2.625  exercise price leaving only 12,431  options  available for future awards
under the 1987 Plan.


1994 INCENTIVE AND NON-STATUTORY OPTION PLAN

      On June 3,  1994,  the  shareholders  of the  Company  approved  the  1994
Incentive and Non-statutory  Option Plan (the "1994 Plan"). The 1994 Plan was an
arrangement  under  which  certain  individuals  could be  granted  options  for
incentive  stock options and  non-statutory  stock  options as described  below.
Subject to  adjustment as set forth in the 1994 Plan,  the  aggregate  number of
shares of the Common  Stock that was the subject of awards was  610,833.  Of the
610,833  shares of Common  Stock  available  under the 1994 Plan,  160,000  were
reserved  for  issuance to  non-employee  directors.  As of December  31,  1996,
345,481  options had been  granted to  employees  and  113,724  options had been
granted to non-employee  directors. As of December 31, 1997, 572,678 options had
been granted in the  aggregate  to  employees  and  non-employee  directors.  No
additional options were granted to employees in 1998.

      The Compensation Committee of the Board of Directors administered the 1994
Plan.  The  Compensation  Committee  consisted  of  directors  who,  except  for
automatic  grants for  non-employee  directors under Section 7 of the 1994 Plan,
were not eligible and had not,  within one year prior to the  appointment of the
Compensation Committee, received equity securities of the Company under the 1994
Plan or any other incentive plan of the Company.

      Under the 1994 Plan, the  Compensation  Committee had wide  discretion and
flexibility,  enabling the Compensation Committee to administer the 1994 Plan in
the manner  that it  determined  was in the best  interest of the  Company.  The
Compensation  Committee  had the  authority to designate  recipients  of options
under the 1994 Plan, to interpret  and construe the  provisions of the 1994 Plan
and  any  options  granted  thereunder,  and  to  do  all  things  necessary  or
appropriate to administer the 1994 Plan in accordance with its terms.

      On  October  6,1999  the Board  terminated  the 1994 Plan and  adopted  or
otherwise ratified four other compensation and/or option plans.


THE 1999 EMPLOYEE STOCK OPTION PLAN

      The 1999 Stock Option Plan,  adopted effective June 15, 1999,  ratified by
the Board on October 6, 1999 and subject to  shareholder  approval (SEE PROPOSAL
TWO OF THIS STATEMENT) provides for the grant of options to officers,  employees
(including employee directors) and consultants. The 1999 Plan is administered by
the Board of Directors which is authorized to determine the terms of each option
granted under the plan, including the number of shares, exercise price, term and
exercisability. Options granted under the plan may be incentive stock options or
nonqualified  stock options.  The exercise price of incentive  stock options may
not be less than 100% of the fair  market  value of the  common  stock as of the
date of grant  (110% of the fair market  value in the case of an  optionee  owns
more than 10% of the total  combined  voting  power of all  classes of  Positron
capital stock).  Options may not be exercised more than ten years after the date
of grant (five years in the case of 10% stockholders).  The Board has authorized
issuance of up to 4,000,000 shares of common stock pursuant to this Stock Option
Plan.

      Upon  termination  of  employment  for any  reason  other  than  death  or
disability,  each option may be exercised for a period of 90 days, to the extent
it is exercisable on the date of  termination.  In the case of a termination due
to death or disability,  an option will remain  exercisable  for a period of one
year, to the extent it is exercisable on the date of termination.

      As of  October 6, 1999,  the date on which the Board  terminated  the 1994
Plan,  there were 29,155  shares  available for grant under the 1994 Plan. As of
October 31, 1999, there were 3,205,000 shares available for grant under the 1999
Plan, provided we obtain shareholder approval of that Plan.

                                       11
<PAGE>

NON-EMPLOYEE DIRECTORS' STOCK OPTION PLAN

      The 1999  Non-Employee  Directors'  Stock  Option  Plan was adopted by the
Board on October 6, 1999  simultaneously  with the termination of the 1994 Plan.
Subject to shareholder  approval (SEE PROPOSAL THREE OF THIS STATEMENT) the Plan
provides  for the  automatic  grant of an option to  purchase  25,000  shares of
common  stock  to  non-employee   directors  upon  their  initial   election  or
appointment  to the Board,  and  subsequent  annual grants also in the amount of
25,000  shares  as of  January  1 of each  year  they  continue  to  serve  as a
director..  The exercise price of the options is 85% of the fair market value of
the common stock on the date of grant.  The Directors'  Plan is  administered by
the Board.  Options granted under the Directors' Plan become  exercisable in one
of two ways: either in four equal annual  installments,  commencing on the first
anniversary of the date of grant,  or  immediately  but subject to the Company's
right  to  repurchase,  which  repurchase  right  lapses  in four  equal  annual
installments,  commencing on the first  anniversary of the date of grant. To the
extent that an option is not  exercisable on the date that a director  ceases to
be a director of the company,  the unexercisable  portion  terminates.  The Plan
provides that up to 500,000 common shares are issuable pursuant to this Plan.


1999 EMPLOYEE STOCK PURCHASE PLAN

      A total of 500,000  shares of common stock has been reserved for issuance,
subject  to  shareholder  approval  of the  Plan  (SEE  PROPOSAL  FIVE  OF  THIS
STATEMENT) under Positron's  Employee Stock Purchase Plan (the "Purchase Plan"),
none of  which  has as yet been  issued.  The  Purchase  Plan  permits  eligible
employees to purchase  Common  Stock at a discount  through  payroll  deductions
during  offering  periods of up to 27 months.  The initial  offering period will
begin no earlier  than  January 1, 2000.  The price at which stock is  purchased
under the Purchase  Plan will be equal to 85% of the fair market value of common
stock on the  first or last day of the  offering  period,  whichever  is  lower.
Eligible employees are offered the opportunity to purchase Common Stock by means
of payroll  deductions  of 2%, 4%, 6%, 8% or 10% of  compensation.  The specific
percentage  selected  is  at  the  employee's  option,  up to a  yearly  maximum
established  from time to time  (currently  established  at  $7,000) of the fair
market value of the Stock,  determined on the Offering  Date, and so long as the
participant  would not own 5% or more of the voting power of the Company's stock
following the purchase.  Each participant may begin participation in the Plan at
the  beginning  of the  Offering  Period or any  Interim  Offering  Period,  may
decrease but not increase  participation  during the  Offering  Period,  and may
terminate  participation  in the Plan  before  the end of any  Interim  Offering
Period, all subject to certain notice and filing requirements.

      Administration  of the Plan is by the  Company's  Board,  or  Compensation
Committee by  delegation.  The Committee is comprised of at least two members of
the Company's Board, each of whom must be disinterested as defined in Securities
and Exchange Commission  regulations.  The Committee has the powers of the Board
pursuant to the Plan,  including the power to determine  questions of policy and
expediency that may arise in the  administration of the Plan, all subject to the
provisions of the Plan.  Members of the Committee  receive no  compensation  for
their services in connection with the administration of the Plan.

      To  participate  in  the  Plan,  employees  must  submit  the  appropriate
documentation  authorizing  deductions from payroll in specified  amounts to the
Company prior to the Offering Period or Interim Offering Period.  Funds deducted
during the quarter are used to purchase  shares of the  Company's  Common Stock,
the  number of which is  determined  (in whole  shares) on the final day of that
quarter by dividing the amount in the participant's Plan Account by the purchase
price of the  stock  as  determined  above.  Participants  receive  certificates
quarterly  for all shares  purchased  during that  quarter.  They may retain the
certificated  shares or sell them in the open  market or  otherwise,  subject to
securities   and  tax  law   restrictions.   Upon   termination  of  employment,
participants will receive  certificates  evidencing  previously purchased shares
and a return of any balance remaining in the  participant's  account on the date
of termination.

      The Board  reserves the right to amend or discontinue  the Plan,  provided
that no  participant's  existing  rights are  adversely  affected,  and provided
further that without Shareholder approval,  no amendment will be effective:  (1)
increasing the aggregate number of shares authorized for purchase


                                       12
<PAGE>

under the Plan or to be purchased by any  participant;  (2) materially  changing
the requirements for eligibility to participate,  or reducing the purchase price
formula  in  the  Plan,  or  materially  increasing  the  benefits  accruing  to
participants  under  the  Plan;  (3)  extending  the  term of the  Plan;  or (4)
otherwise modifying the Plan if the modification  requires  shareholder approval
to satisfy applicable statutes or Internal Revenue Service and/or Securities and
Exchange Commission regulations.


401(k) PLAN

      The Company has a 401(k)  Retirement  Plan and Trust (the  "401(k)  Plan")
which became effective as of January 1, 1989.  Employees of the Company who have
completed  one-quarter  year of service and have attained age 21 are eligible to
participate  in the 401(k) Plan.  Subject to certain  statutory  limitations,  a
participant may elect to have his or her  compensation  reduced by up to 20% and
have the Company contribute such amounts to the 401(k) Plan on his or her behalf
("Deferral  Contributions").  The Company makes contributions in an amount equal
to  25%  of  the  participant's  Deferral  Contributions  up to 6% of his or her
compensation ("Employer Contributions"). Additionally, the Company may make such
additional contributions as it shall determine each year in its discretion.  All
Deferral  and  Employer  Contributions  made  on  behalf  of a  participant  are
allocated to his or her individual accounts and such participant is permitted to
direct the investment of such accounts.

      A participant  is fully vested in the current value of that portion of his
or her accounts attributable to Deferral Contributions. A participant's interest
in that portion of his or her accounts attributable to Employer Contributions is
generally fully vested after five years of employment.  Distributions  under the
401(k) Plan are made upon termination of employment,  retirement, disability and
death.  In addition,  participants  may make  withdrawals in the event of severe
hardship or after the participant attains age fifty-nine and one-half.

      The 401(k) Plan is intended to qualify  under  Section 401 of the Code, so
that   contributions   made  under  the  401(k)  Plan,   and  income  earned  on
contributions,  are not taxable to participants until withdrawal from the 401(k)
Plan.

      The Company's  contributions to the 401(k) Plan on behalf of all employees
in the years ended  December 31,  1998,  December 31, 1997 and December 31, 1996
were $11,420, $26,306 and $36,000, respectively.


OPTION GRANTS IN LAST FISCAL YEAR

      The following  table sets forth the options granted during the last fiscal
year to each of the named executive officers of the Company:

<TABLE>
<CAPTION>
                      Option/SAR Grants In Fiscal Year 1998
- ---------------------------------------------------------------------------------------------------------------------

                                    INDIVIDUAL GRANTS                   POTENTIAL REALIZABLE VALUE
                                                                        AT ASSUMED ANNUAL RATES
                                                                        OF STOCK PRICE APPRECIATION
                                                                        FOR OPTION TERM
- ---------------------------------------------------------------------------------------------------------------------
<S>                <C>             <C>             <C>             <C>           <C>            <C>        <C>
                   NUMBER OF       % OF TOTAL
                   SECURITIES      OPTIONS
                   UNDER           GRANTED TO
                   OPTIONS         EMPLOYEES       EXERCISE OR
                   GRANTED         IN FISCAL       BASE PRICE      MARKET        EXPIRATION
NAME               (#)             YEAR(a)         ($/SH)          PRICE         DATE           0%($)      5%($)(b)
- ------             ----------      -----------     ------------    --------      -----------    ------     ---------

Gary B. Wood       -0-             -0-             -0-             -0-           -0-            -0-        -0-
</TABLE>
- -------------------------------

(a)   No options were granted to any  employee,  including  executive  officers,
      during the last fiscal year.

(b)   Based  on  5-year  option  term  and  annual compounding; results in total
      appreciation of 27.6% (at 5% per year) and 61.1% (at 10% per year).

                                       13
<PAGE>

OPTION EXERCISES IN LAST FISCAL YEAR AND YEAR-END OPTION VALUES

      The  following  table sets  forth the  options  exercised  during the last
fiscal year by Named Executive Officers of the Company:

       Aggregated Options Exercised and Option Values in Fiscal Year 1998


<TABLE>
<CAPTION>
                                                           NUMBER OF SECURITIES         VALUE OF UNEXERCISED
                                                         UNDERLYING UNEXERCISED       IN THE MONEY OPTIONS AT
                      SHARES ACQUIRED       VALUE        OPTIONS AT YEAR-END (#)           YEAR-END ($)
    NAME              ON EXERCISE (#)   REALIZED ($)    EXERCISABLE/UNEXERCISABLE    EXERCISABLE/UNEXERCISABLE
   ------            -----------------  ------------   ---------------------------   -------------------------
<S>                        <C>               <C>                  <C>                          <C>
Gary B. Wood               -0-               -0-                  -0-                          -0-
</TABLE>

COMPENSATION COMMITTEE REPORT

      This  report is  provided by the  Compensation  Committee  of the Board of
Directors  (the  "Committee")  to  assist   stockholders  in  understanding  the
Committee's  objectives  and  procedures in  establishing  the  compensation  of
Positron's  Chief Executive  Officer,  when employed,  the President,  and other
executive  officers.  The  Committee,  made  up of  non-employee  Directors,  is
responsible  for  establishing  and   administering   the  Company's   executive
compensation  program.  None of the  members of the  Committee  is  eligible  to
receive awards under the Company's incentive compensation programs.

      Positron's executive compensation program is designed to motivate, reward,
and retain the management  talent needed to achieve its business  objectives and
maintain its  competitiveness  in the medical imaging industry.  It does this by
utilizing  competitive  base  salaries  that  recognize a  philosophy  of career
continuity and by rewarding  exceptional  performance and  accomplishments  that
contribute to the Company's success.


                      COMPENSATION PHILOSOPHY AND OBJECTIVE

      The  philosophical  basis  of  the  compensation  program  is to  pay  for
performance and the level of  responsibility  of an individual's  position.  The
Committee  finds  greatest  value in  executives  who  possess  the  ability  to
implement  the  Company's  business  plans as well as to react to  unanticipated
external  factors that can have a significant  impact on corporate  performance.
Compensation  decisions  for  all  executives,  including  the  named  executive
officers,  are based on the same criteria.  These include  quantitative  factors
that directly improve the Company's short-term financial performance, as well as
qualitative  factors that  strengthen  the Company  over the long term,  such as
demonstrated  leadership  skills and the ability to deal quickly and effectively
with difficulties which sometimes arise.

      The Committee  believes that  compensation  of Positron's  key  executives
should:

             o  Link rewards to business results and stockholder returns;
             o  Encourage  creation  of  stockholder  value and  achievement  of
                strategic  objectives;
             o  Maintain an appropriate balance between base salary  and  short-
                and  long-term  incentive  opportunity;
             o  Attract and retain, on  a  long-term  basis,   highly  qualified
                executive personnel; and
             o  Provide total compensation  opportunity that is competitive with
                that provided by  competitors in the medical  imaging  industry,
                taking into account  relative  company size and  performance  as
                well as individual responsibilities and performance.

                     KEY ELEMENTS OF EXECUTIVE COMPENSATION

      Positron's executive compensation program consists of three elements: Base
Salary,  Short-Term  Incentives and Long-Term  Incentives.  Payout of short-term
incentives depends on corporate  performance  measured against annual objectives
and  overall  performance.   Payout  of  the  long-term  incentives  depends  on
performance of Positron stock, both in absolute and relative terms.

                                       14
<PAGE>

BASE SALARY
      A  competitive  base  salary is  crucial  to  support  the  philosophy  of
management  development  and career  orientation  of  executives.  Salaries  are
targeted to pay levels of the Company's competitors and companies having similar
capitalization  and revenues,  among other  attributes.  Executive  salaries are
reviewed annually.


SHORT-TERM INCENTIVE
      Short-term awards to executives are made in cash and in stock to recognize
contributions  to the  Company's  business  during the past  year.  The bonus an
executive  receives  is  dependent  on  individual   performance  and  level  of
responsibility.  Assessment  of an  individual's  relative  performance  is made
annually  based  on a number  of  factors  which  include  initiative,  business
judgment, technical expertise, and management skills.

      CASH BONUS PROGRAM.  From time to time, the Committee  adopts an Executive
Officer Cash Bonus Program, pursuant to which executive officers are eligible to
receive a bonus from a pool  consisting of a set  percentage of net profits from
that particular fiscal year. The Committee allocates to each executive officer a
percentage  of the bonus pool.  For the year 1998 the  Committee did not adopt a
Cash Bonus Program,  and no cash bonus awards were made to any executive officer
during 1998.

      STOCK  BONUS  INCENTIVE  PLAN.  In  1999  the  Board  adopted,  and we are
requesting  the  shareholders  to approve  the  adoption of the 1999 Stock Bonus
Incentive  Plan. (SEE PROPOSAL FOUR OF THIS  STATEMENT).  Under the terms of the
Stock Bonus Plan the Committee may award shares of the Company's Common Stock to
employees, including executive officers.

LONG-TERM INCENTIVE
      Long-term  incentive  awards are designed to develop and  maintain  strong
management  through  share  ownership  and  incentive  awards.  We  are  seeking
shareholder  approval of the 1999 Stock Option Plan and the 1999 Employee  Stock
Purchase Plan.

      STOCK  OPTION  PLAN.  The 1999 Stock  Option Plan  replaces the 1994 Stock
Option Plan and, if approved by the shareholders,  will authorize issuance of up
to  4,000,000  common  shares  under  this  Plan.  (SEE  PROPOSAL  TWO  OF  THIS
STATEMENT).  At the sole  discretion  of the Stock  Option  Committee,  eligible
officers and employees  periodically  receive  options to purchase shares of the
Company's  Common Stock  pursuant to the Option  Plan.  The value of the options
depends  entirely on appreciation  of Positron  stock.  Grant of options depends
upon  quarterly  and annual  Company  performance,  as  determined  by review of
qualitative and quantitative factors.

      EMPLOYEE STOCK  PURCHASE PLAN. In October 1999 the directors  approved the
adoption  of  the  1999  Employee  Stock  Purchase  Plan.  If  approved  by  the
shareholders  (SEE PROPOSAL FIVE OF THIS  STATEMENT)  all  employees,  including
executive  officers,  may  purchase  shares of the  Company's  Common Stock at a
discount of 15% from the market price of the shares.

   1998 COMPENSATION FOR CHIEF EXECUTIVE OFFICER AND NAMED EXECUTIVE OFFICERS.

      During 1998, Gary B. Wood served as the Company's Chief Executive  Officer
pursuant to the terms of an existing  Consulting  Agreement between Dr. Wood and
the Company. The terms of the Consulting  Agreement,  including its compensation
and payment  terms,  were  negotiated at the time the  Agreement was  originally
entered into. (See  TRANSACTIONS  WITH MANAGEMENT AND OTHERS of this Statement.)
No  additional  amounts  beyond  those  called for  pursuant  to the  Consulting
Agreement were paid to Dr. Wood for his service as the Company's Chief Executive
Officer.

      Based on the  Company's  performance,  the Board  awarded no cash or stock
bonuses nor stock options during the year to the Chief Executive  Officer nor to
any other Named Executive Officer.

      Members of the Compensation Committee

      S. Lewis Meyer
      Gary B. Wood, Ph.D.


                                       15
<PAGE>

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

SHARE INVESTMENT PERFORMANCE

      The following  graph compares the total return  performance of the Company
for the  periods  indicated  with the  performance  of the  Russell  2000  Index
(presented on a dividends reinvested basis) and the performance of the Hambrecht
&  Quist  Medical  Products  Index.  The  Company's  shares  are  traded  on the
over-the-counter  securities  market,  and quoted on the NASDAQ  Bulletin  Board
under the symbol "POSC".  The Russell 2000 Index measures the performance of the
1,000 smallest companies in the Russell 3000 Index,  representing  approximately
10% of the total  market  capitalization  of that Index  with an average  market
capitalization  currently of $467.3 million.  The H&Q Medical  Products Index is
comprised of 20 companies in the medical  products and related  industries.  The
total return indices reflect  reinvested  dividends and are weighted on a market
capitalization basis at the time of each reported data point.

                                PERFORMANCE GRAPH
                                  Graph omitted

Year                             1993    1994    1995    1996     1997     1998
- ----------------------------     -----   -----   -----   -----    -----    ----
Positron Corporation              100     81      26      25        4       2
Russell 2000                      100     98      138     170      208     294
H&Q Medical Products Index        100     100     100     100      119     175

                                       16
<PAGE>

EMPLOYMENT CONTRACTS, TERMINATION OF EMPLOYMENT
AND CHANGE-IN-CONTROL ARRANGEMENTS

      Gary H.  Brooks  became  President  of the  Company on January  22,  1999,
initially on a part-time basis and on a full-time basis as of September 1, 1999.
In  connection  with such  employment  the Company  entered  into an  Employment
Agreement with Mr. Brooks providing for an initial term ending June 15, 2000 and
continuing for rolling six month periods thereafter.  Pursuant to the Agreement,
in the event of his termination without cause, Mr. Brooks is entitled to receive
the  greater of his base salary for the  remainder  of the term or six months at
the annual salary rate then in effect.


REPORT ON REPRICING OF OPTIONS/SARS.

      The  Company did not  reprice  any  options or stock  appreciation  rights
during 1998.
Compensation Committee


S. Lewis Meyer
Gary B. Wood, Ph.D.


FILINGS BY DIRECTORS, EXECUTIVE OFFICERS AND TEN PERCENT HOLDERS

      Section  16(a)  of the  Securities  Exchange  Act  of  1934  requires  the
Company's  directors,  executive  officers,  and  persons  who own more than ten
percent  of a  registered  class of the  Company's  equity  securities,  to file
reports of ownership and changes in ownership  with the  Securities and Exchange
Commission.   Executive  officers,  directors,  and  greater  than  ten  percent
shareholders  are required by SEC  regulation to furnish the Company with copies
of all Section 16(a) forms they file.

      Based solely on its review of the copies of such forms  received by it, or
written  representations from certain reporting person timely filed, the Company
believes all such forms were timely filed.


                                  PROPOSAL TWO

      TO APPROVE THE 1999 STOCK OPTION PLAN AND AUTHORIZATION OF 4,000,000
                  COMMON SHARES ISSUABLE PURSUANT TO THE PLAN

      The  following  is a summary of the  material  features  of the 1999 Stock
Option Plan for which  shareholder  approval is being  requested  ("Stock Option
Plan").


PROPOSAL

      On October 6, 1999 the Board of Directors terminated the 1994 Stock Option
Plan  (which  provided  for  options  grants  to  employees,   consultants,  and
non-employee  directors) and ratified the adoption,  effective June 15, 1999, of
the 1999 Stock  Option  Plan for  employees  and  non-employee  consultants.  If
approved  by the  shareholders,  the Stock  Option  Plan also  authorizes  up to
4,000,000  shares of common  stock to be issued  to  employees  and  consultants
pursuant  to that  Plan.  At the  annual  meeting  the  shareholders  are  being
requested  to consider and approve the adoption of the Stock Option Plan as well
as the  authorization of 4,000,000 common shares issuable  pursuant to the Plan.
The affirmative vote of the holders of a majority of the shares  represented and
voting at the meeting is required for approval.

                                       17
<PAGE>

                  MANAGEMENT RECOMMENDS A VOTE FOR PROPOSAL TWO

      A Summary of the  essential  features  of the 1999 Stock  Option  Plan are
outlined below. A complete text of the Stock Option Plan is set forth as Exhibit
1 to this Statement.

PURPOSE

      The  purposes  of the 1999  Stock  Option  Plan are to induce  persons  of
outstanding  ability  and  potential  to join and remain  with the  Company,  to
provide incentive for such employees and non-employee  consultants to expand and
improve the profits and prosperity of the Company, and to attract and retain key
personnel.  The Stock Option Plan  provides  for the granting of both  incentive
stock options and nonqualified stock options.

ELIGIBILITY

      Options  may be  granted  under  the  Stock  Option  Plan to any  regular,
full-time  employee,  including  officers  and  directors,  and to  non-employee
consultants of the Company; provided however that incentive stock options may be
granted only to  employees.  Directors  who are not employees of the Company are
not eligible to participate in the Stock Option Plan.

ADMINISTRATION

      Administration  of  the  Stock  Option  Plan  is by a  Stock  Option  Plan
Committee  comprised  of at least two  non-employee  members of the  Board.  The
Committee has the power to: grant  options;  determine the option price and term
of each  option,  determine  the  persons to whom and the time or times at which
options  shall be granted,  and  determine the number of shares to be subject to
each option;  interpret the Stock Option Plan;  prescribe  rules and regulations
relating to the Stock  Option  Plan;  and make all other  determinations  deemed
necessary  or advisable  for the  administration  of the Stock Option Plan.  The
Committee  also has the  authority  to offer  participants  the  opportunity  to
replace  outstanding  higher priced options with new lower priced  options.  The
Company has reduced the exercise  price of options in the past granted under the
1994 Plan.  Members of the  Committee  will  receive no  compensation  for their
services in connection with the administration of the Stock Option Plan.

OPTION TERMS

      The maximum term of each option is ten years except that, in the case of a
participant who owns stock possessing more than ten percent of the voting rights
of the Company's outstanding capital stock (a "10% Holder"), the maximum term of
an incentive  stock option is five years.  Options  granted  under the Plan must
vest at a rate no less than 20% each year over five years  from the grant  date,
although the vesting schedule may be more rapid.  Options granted under the Plan
are not transferable other than by will or the laws of descent and distribution,
and during an optionee's  life are  exercisable  only by the  optionee.  Options
granted  under the Plan  generally  terminate  three  months  after the optionee
ceases  to be  employed  by the  Company,  a parent  or  subsidiary,  except  if
termination is due to the employee's  permanent and total  disability,  in which
event the option may be exercised within a year of termination.  In the event of
the  employee's  death,  the  employee's  estate has 18 months to  exercise  the
option.

EXERCISE PRICE

      The exercise  price of all  nonstatutory  stock options  granted under the
Plan must be at least  equal to 85% of the fair market  value of the  underlying
stock  on the  grant  date,  or 110% of fair


                                       18
<PAGE>

market  value in the case of a 10% Holder. The exercise  price of all  incentive
stock  options  granted under the Plan must be at least equal to the fair market
value of the underlying stock on the grant date, or 110% of fair market value in
the case of a 10% Holder. With respect to incentive stock options, the aggregate
fair  market  value  (determined  at the time of grant) of stock  which  becomes
exercisable  for the first time in any year  cannot  exceed  $100,000.  The Plan
permits  the  exercise  of  options  for  cash  or  stock,  other  consideration
acceptable to the Committee, or pursuant to a deferred payment arrangement.


CHANGES IN STOCK AND EFFECT OF CERTAIN CORPORATE EVENTS

      If there is any change in the  Common  Stock  subject to the Stock  Option
Plan or subject to any option granted under the Plan,  whether  through  merger,
consolidation, reorganization, recapitalization, dividend or otherwise, the Plan
provides  that  an  appropriate  adjustment  be  made  by the  Committee  to the
aggregate  number of shares subject to the Plan and the number of shares and the
price per share of stock subject to outstanding options.

      In the event of  dissolution,  liquidation or specified types of merger of
the  Company,   the  options  granted  under  the  Plan  accelerate  and  become
exercisable  immediately  prior to such  merger  or  consolidation,  unless  the
surviving entity assumes the outstanding options or substitutes similar options.


AMENDMENT AND TERMINATION

      The Board of Directors may amend or terminate the Stock Option Plan at any
time, except that any amendment which would (i) increase the aggregate number of
shares of common stock issued under the Plan,  or (ii)  materially  increase the
benefits  accruing to participants,  or (iii) materially  modify the eligibility
requirements  will only be effective if approved by the  Company's  shareholders
within 12 months before or after adoption.  Unless terminated earlier,  the Plan
will terminate on June 15, 2009.


FEDERAL INCOME TAX CONSEQUENCES

      Incentive  stock options  granted under the Stock Option Plan are intended
to be eligible for the favorable income tax treatment  accorded  incentive stock
options  under  Section 422 of the Internal  Revenue  Code.  Nonqualified  stock
options  granted  under the Stock Option Plan are subject to federal  income tax
treatment  pursuant to rules  governing  options  that are not  incentive  stock
options.

      INCENTIVE  STOCK  OPTIONS.  There are  generally  no  federal  income  tax
consequences  to the optionee by reason of the grant or exercise of an incentive
stock  option.  The  exercise of an  incentive  stock  option may  increase  the
optionee's alternative minimum tax liability however, if any.

      If an optionee holds stock acquired through exercise of an incentive stock
option for more than two years from the date on which the option is granted  and
more than one year  from the date on which the  shares  are  transferred  to the
optionee upon exercise of the option,  any gain or loss on a disposition of such
stock will be capital  gain or loss.  Any  capital  gain or loss  realized by an
optionee on a  qualifying  or  disqualifying  (see below)  disposition  of stock
acquired  through  exercise of an  incentive  stock  option will be long-term or
short-term  depending  on  whether  the  stock  was held for more than one year.
Generally, if the optionee disposes of the stock before the expiration of either
of the holding periods described above (a "disqualifying  disposition"),  at the
time of disposition the optionee will realize  taxable  ordinary income equal to
the lesser of (i) the excess of the  stock's  fair  market  value on the date of
exercise over the optionee's adjusted basis in the stock, or (ii) the optionee's
actual gain, if any, on the purchase and sale. Any  additional  gain or any loss
upon the  disqualifying  disposition  will be  capital  gain or  loss.  Slightly
different  rules may apply to  optionees  who acquire  stock  subject to certain
repurchase options or who are subject to Section 16(b) of the Exchange Act.

                                       19
<PAGE>

      There are no federal income tax  consequences  to the Company by reason of
the grant or exercise of an incentive  stock option.  To the extent the optionee
recognizes ordinary income by reason of a disqualifying disposition, the Company
will be entitled (subject to the requirement of reasonableness  and, perhaps, in
the future,  the satisfaction of its withholding  obligation) to a corresponding
business expense deduction in the tax year in which the disposition occurs.

      NONQUALIFIED STOCK OPTIONS.  There are normally no tax consequences to the
optionee or the Company by reason of the grant of a  nonqualified  stock option.
Upon exercise of a nonqualified stock option,  the optionee normally  recognizes
ordinary  income in an amount by which the fair market value of the stock on the
date  of  exercise  exceeds  the  exercise  price.  Generally  with  respect  to
employees, the Company is required to withhold from wages an amount based on the
ordinary  income  realized  by  the  exercise.  Subject  to  the  reasonableness
requirement and the satisfaction of its withholding obligation, the Company will
be  entitled  to a  business  expense  deduction  in the  amount of the  taxable
ordinary income recognized by the optionee.

      Upon  disposition of the stock, the optionee will recognize a capital gain
or loss equal to the  difference  between the  selling  price and the sum of the
amount paid for such shares plus any amount  recognized as ordinary  income upon
exercise of the option.  Such gain or loss will be long or short-term  depending
on whether the stock was held for more than one year.  Slightly  different rules
apply to optionees who acquire stock  subject to certain  repurchase  options or
who are subject to Section 16(b) of the Exchange Act.

      There are no tax  consequences to the Company by reason of the disposition
of stock acquired upon exercise of a nonqualified option.


USE OF PROCEEDS

      All proceeds from the sale of shares pursuant to options granted under the
1999 Stock Option Plan constitute general funds of the Company


INDEMNIFICATION OF COMMITTEE

      Under the terms of the Stock Option  Plan,  members of the  Committee  are
entitled to be indemnified by the Company against costs and expenses  reasonably
incurred in connection with any action or proceeding  brought by reason of their
action or failure to act under or in  connection  with the Stock  Option Plan or
any rights granted thereunder.


                                 PROPOSAL THREE

                   TO APPROVE THE 1999 NON-EMPLOYEE DIRECTORS'
                 STOCK OPTION PLAN AND AUTHORIZATION OF 500,000
                   COMMON SHARES ISSUABLE PURSUANT TO THE PLAN

      On October 6, 1999 the Board of  Directors  adopted the 1999  Non-Employee
Directors'  Stock  Option  Plan.  The  following  is a summary  of the  material
features of the 1999  Non-Employee  Directors'  Stock  Option Plan  ("Directors'
Plan") for which shareholder  approval is being sought. The complete text of the
Directors' Plan is set forth as Exhibit 2 to this Statement.


PROPOSAL

      On October 6, 1999 the Board of Directors terminated the 1994 Stock Option
Plan  (which  provided  for  options  grants  to  employees,   consultants,  and
non-employee  directors)  and adopted  the 1999  Non-Employee  Directors'  Stock
Option Plan providing for automatic grants to non-employee  directors upon their
initial election and annually  thereafter  during their service.  The Directors'


                                       20
<PAGE>

Plan also  authorizes  up to  500,000  shares  of  common  stock to be issued to
non-employee  directors  pursuant  to  that  Plan.  At the  annual  meeting  the
shareholders  are being  requested  to consider  and approve the adoption of the
Plan as well as the  authorization of 500,000 common shares issuable pursuant to
the Plan.  The  affirmative  vote of the  holders  of a  majority  of the shares
represented and voting at the meeting is required for approval.

                 MANAGEMENT RECOMMENDS A VOTE FOR PROPOSAL THREE

PURPOSE

      The purpose of the 1999  Non-Employee  Directors'  Stock Option Plan is to
provide a means by which each  non-employee  director of the Company is given an
opportunity  to purchase  stock,  in turn  assisting the Company in securing and
retaining the services of persons  capable of serving in such  capacity,  and to
provide  incentive to such persons to exert  maximum  efforts for the success of
the Company.

ADMINISTRATION

      The Directors'  Plan is  administered by the Company's Board of Directors.
The Board is authorized to delegate  administration  of the Directors' Plan to a
committee composed of at least two members of the Board.

SHARES SUBJECT TO THE DIRECTORS' PLAN

      Subject to the provisions of the  Directors'  Plan relating to adjustments
upon  changes in stock,  the stock  that may be  purchased  pursuant  to options
granted  under the Plan  cannot  exceed an  aggregate  of 500,000  shares of the
Company's  common  stock.  If any option  granted under the Plan expires for any
reason or otherwise  terminates without having been exercised in full, the stock
not purchased under such option again becomes available for the Directors' Plan.

ELIGIBILITY

      Options under the Directors'  Plan may be granted only to directors of the
Company who are not employees of the Company or any affiliate of the Company.

AUTOMATIC GRANTS

      The 1999  Non-Employee  Directors'  Stock  Option  Plan  provides  for the
automatic  grant of options to purchase shares of common stock of the Company to
Non-Employee  directors.  The Plan provides that each person who not an employee
and who is  elected  for the  first  time to be a  director  after  the  date of
approval  of the  Plan  by the  shareholders  of the  Company  (and  who has not
previously been an employee of the Company)  shall,  upon the date of his or her
initial  election,  automatically be granted an option to purchase 25,000 shares
of our common stock. In addition, every person who remains a director and who is
not an employee  on each  succeeding  January 1st will be granted an  additional
option to purchase 25,000 shares,  provided there are still shares  available in
the Plan to be granted,  and  provided  further  that such  director  has served
continuously as such for at least the immediately preceding thirty (30) days.

TERMS OF OPTIONS

      TERM.  Options under the  Directors'  Plan have a ten year term;  however,
each option will terminate on the last day of the three-month  period commencing
on the date the  Eligible  Director  ceases


                                       21
<PAGE>

to be a member of the Board for any reason other than death or total disability,
in which case the option may be exercised within 18 months following termination
of such directorship.

      EXERCISE  PRICE;  PAYMENT.  The  exercise  price of each option  under the
Directors'  Plan must be equal to 85% of the fair  market  value of the stock on
the  grant  date.  The  optionee  may  elect  to pay the  option  price in cash,
certified check, bank draft or express money order.

      VESTING;  OPTION  EXERCISE.  An option granted under the  Directors'  Plan
vests pursuant to one of two  schedules,  determined by the Board at the time of
grant:  (i) in  full on the  date  of  grant;  or  (ii)  in  four  equal  annual
installments  commencing  on the date one year  after  the grant  date.  Options
vesting  in full on the  grant  date  are  subject  to the  Company's  right  to
repurchase at the original per share  purchase  price,  which  repurchase  right
lapses at the rate of 25% per year  starting with the first  anniversary  of the
Grant.  Positron  also has a repurchase  right with  respect to options  granted
pursuant  to either  schedule  if the  service  of a  Non-Employee  Director  is
terminated for any reason other than death or total disability, which repurchase
right continues for 90 days after  termination of service.  If the  Non-Employee
Director  exercise  his/her option after  termination of services for any reason
other than death or total disability,  the Company's  repurchase right continues
for 90 days after the exercise.

RESTRICTIONS ON TRANSFER

      An option under the Directors' Plan is not transferable  except by will or
by the  laws of  descent  and  distribution,  and may be  exercised  during  the
grantee's  lifetime  only  by  the  grantee  or by  his/her  guardian  or  legal
representative.

DURATION, AMENDMENT AND TERMINATION

      The Board may amend,  modify,  revise or terminate the Directors'  Plan at
any time. Unless sooner terminated, the Directors' Plan will terminate ten years
from the date the plan is approved by the shareholders of the Company.

      The Board may amend the Directors'  Plan from time to time.  However,  any
amendment must be approved by the vote of the shareholders of the Company within
twelve months before or after the adoption of the amendment, where the amendment
would  modify  the  Directors'  Plan in any way if  such  modification  requires
shareholder  approval  in  order  for the  Directors'  Plan to  comply  with the
requirements  of Rule 16b-3  promulgated  under the  Exchange  Act or to prevent
disqualification  of the  Directors'  Plan from  being  "disinterested  persons"
within  the  meaning of Rule  16b-3.  Rights  and  obligations  under any option
granted before  amendment of the Directors'  Plan may not be altered or impaired
by any amendment of the Directors'  Plan,  except with the consent of the person
to whom the option was granted.

ADJUSTMENT PROVISIONS

      If there is any  change in the stock  subject  to the  Directors'  Plan or
subject  to any  option  granted  under the  Directors'  Plan  (through  merger,
consolidation,  reorganization,   recapitalization,  stock  dividend,  or  other
changes in the Company's  capital structure or its business) the Directors' Plan
and options  outstanding  thereunder  will be  appropriately  adjusted as to the
class  and the  maximum  number of shares  subject  to such plan and the  class,
number of  shares  and price  per  share of stock  subject  to such  outstanding
options.  There  is no  provision  for  accelerated  vesting  in the  event of a
dissolution, liquidation, merger or other capital reorganization of the Company.

                                       22
<PAGE>

FEDERAL INCOME TAX INFORMATION

      Options  granted  under the  Directors'  Plan will be  nonqualified  stock
options.  There are normally no tax  consequences to the optionee or the Company
by reason of the grant of a  nonqualified  stock  option.  Upon exercise of such
option, the optionee normally  recognizes  ordinary income in an amount by which
the fair market value of the stock on the date of exercise  exceeds the exercise
price. Upon disposition of the stock, the optionee will recognize a capital gain
or loss equal to the  difference  between the  selling  price and the sum of the
amount  paid for such shares plus any amount  recognized  as ordinary  income on
exercise of the option.  There are no tax  consequences to the Company by reason
of the disposition of stock acquired upon exercise of a nonqualified option.

INDEMNIFICATION OF COMMITTEE

      Under the terms of the  Directors'  Plan,  members  of the  Committee  are
entitled to be indemnified by the Company against costs and expenses  reasonably
incurred in connection with any action or proceeding  brought by reason of their
action or failure to act under or in connection  with the Directors' Plan or any
rights granted thereunder.

                                  PROPOSAL FOUR

                 TO APPROVE THE 1999 STOCK BONUS INCENTIVE PLAN
                AND THE AUTHORIZATION OF 1,000,0000 COMMON SHARES
                          ISSUABLE PURSUANT TO THE PLAN

      The  following  is a summary of the  material  features  of the 1999 Stock
Bonus  Incentive  Plan ("Stock Bonus Plan").  A complete copy of the text of the
Plan is set forth as Exhibit 3 to this Statement.

Proposal

      On October 6, 1999 the Board of Directors adopted the Stock Bonus Plan and
authorized  the issuance of up to 1,000,000  shares of common stock  pursuant to
the Stock Bonus Plan, with no more than 200,000 shares available for issuance in
any single  calendar  year.  The purpose is to provide  selected  employees  and
outside  consultants  with bonus awards of stock to reward them for past service
and to encourage them to remain in the Company's service.  At the annual meeting
the shareholders are being requested to consider and approve the adoption of the
Stock Bonus Plan and the authorization of up to 1,000,000 common shares issuable
pursuant to the Plan. The  affirmative  vote of the holders of a majority of the
shares represented and voting at the meeting is required for approval.

                 MANAGEMENT RECOMMENDS A VOTE FOR PROPOSAL FOUR

PURPOSE

      The  purpose of the Stock  Bonus  Plan is to enable the  company to reward
past services of selected  employees and consultants with bonuses  consisting of
common stock and to encourage them to remain in the Company's  service,  as well
as  providing  the Company with a valuable  tool for  recruiting  and  retaining
employees and outside consultants of outstanding ability.


ADMINISTRATION

      The Plan is  administered  by the Stock  Option  Committee of the Board of
Directors,   which   determines  the  meaning  and  application  of  the  Plan's
provisions,   selects  employees,   including  officers,   and  consultants  who
participate;  determines each participant's stock bonus award; waives or changes

                                       23
<PAGE>

any of the Plan's conditions;  adopts or amends rules and guidelines relating to
the Plan; and takes other actions deemed necessary to administer the Plan.

ELIGIBILITY

      Any  consultant or employee  currently  providing  services is eligible to
receive a bonus. The Committee  selects  participants  whom it believes are in a
position to contribute  materially to the attainment of the Company's  goals and
objectives.  Actual  awards  are made to reward  participants  for  helping  the
Company meet annual  business  plan goals  through a high level of goal oriented
performance  which exceeds that normally  expected for which the  participant is
regularly paid a salary.

BONUS AWARDS

      Participants  who are  employees  are  eligible to receive up to a maximum
bonus of 40% of their  salary or, if  outside  consultants,  whatever  bonus the
Committee deems appropriate.  The Committee  determines any participant's actual
stock bonus award (if any).  Participants  receiving  stock  valued at less than
$3,000 are issued stock as soon as practicable  following the award.  Bonuses of
stock  valued at  greater  than  $3,000 are  issued  within 60 days  thereafter.
Distributions  of bonus shares are made from  authorized  but  unissued  shares.
Participants  must be  currently  employed  or  currently  providing  consulting
service to the Company at the time of the bonus award.

SHARES SUBJECT TO THE PLAN

      The total  number of shares of the  Company's  common  stock  which may be
issued under the Plan may not exceed 1,000,000  shares,  subject to stock split,
recapitalization or similar change in corporate  structure.  In no event may the
Company make more than 200,000 shares per year  available for issuance  pursuant
to bonus awards in any fiscal year.

                                  PROPOSAL FIVE

                  TO APPROVE THE ADOPTION OF THE 1999 EMPLOYEE
                  STOCK PURCHASE PLAN AND THE AUTHORIZATION OF
               500,000 SHARES OF COMMON STOCK PURSUANT TO THE PLAN

      On October 6, 1999 the Board of Directors  adopted the 1999 Employee Stock
Purchase  Plan  ("Stock  Purchase  Plan.")  The  following  is a summary  of the
material provisions of the Stock Purchase Plan for which shareholder approval is
being sought. A complete text of the Stock Purchase Plan is contained as Exhibit
4 to this Statement.

PROPOSAL

      On October 6, 1999 the Board of Directors approved the 1999 Employee Stock
Purchase Plan to provide  eligible  employees  with an  opportunity  to purchase
common stock of the Company  through  regular  payroll  deductions,  in order to
provide  employees with a manageable way by which to increase their  proprietary
interest and investment in the Company.  The Board also  authorized the issuance
of up to 500,000 shares of the Company's common stock pursuant to the Plan.

                                       24
<PAGE>

                 MANAGEMENT RECOMMENDS A VOTE FOR PROPOSAL FIVE

PURPOSE

      The purpose of the Stock  Purchase Plan is to provide  eligible  employees
with an opportunity  through regular payroll deductions to purchase common stock
of the Company in order to increase their proprietary interest in the Company.

ELIGIBILITY

      All employees who are regular employees of the Company, whose date of hire
is at least six months prior to the beginning of the Offering  Period or Interim
Offering Period, and who are customarily employed for at least 20 hours per week
and more than five months in any calendar  year are eligible to  participate  in
the Plan. If approved by the  shareholders,  the first Offering  Period will run
from January 1, 2000 through  December 31, 2001,  the second from January 1 2002
through  March 31, 2004 and the next period from April 1, 2004  through June 30,
2006. Each Interim Offering Period is a calendar quarter.

      Eligible employees are offered the opportunity to purchase Common Stock by
means of  payroll  deductions  of 2%,  4%,  6%, 8% or 10% of  compensation.  The
specific percentage selected is at the employee's option, up to a yearly maximum
of $10,000 of the fair market  value of the Stock `  determined  on the Offering
Date,  and so long as the  participant  would  not own 5% or more of the  voting
power of the Company's stock following the purchase.  Each participant may begin
participation in the Plan at the beginning of the Offering Period or any Interim
Offering Period, may decrease but not increase participation during the Offering
Period,  and may  terminate  participation  in the  Plan  before  the end of any
Interim Offering Period, all subject to certain notice and filing requirements.

ADMINISTRATION

      Administration  of the Plan is by the  Company's  Board,  or  Compensation
Committee by  delegation.  The Committee is comprised of at least two members of
the Company's Board, each of whom must be disinterested as defined in Securities
and Exchange Commission  regulations.  The Committee has the powers of the Board
pursuant to the Plan,  including the power to determine  questions of policy and
expediency that may arise in the  administration of the Plan, all subject to the
provisions of the Plan.  Members of the Committee  receive no  compensation  for
their services in connection with the administration of the Plan.

PURCHASE PRICE

      The price for the shares purchased pursuant to the Plan is equal to 85% of
the fair  market  value of the  shares on either the  Offering  Date (or date of
entry  for new or  re-enrolling  employees)  or the  last  day of  each  Interim
Offering  Period,  whichever is less. The funds  contributed by the  participant
earn no interest while they are being held by the Company.

PROCEDURES

      To  participate  in  the  Plan,  employees  must  submit  the  appropriate
documentation  authorizing  deductions from payroll in specified  amounts to the
Company prior to the Offering Period or Interim Offering Period.  Funds deducted
during the quarter are used to purchase  shares of the  Company's


                                       25
<PAGE>

Common Stock,  the number of which is determined  (in whole shares) on the final
day of that quarter by dividing the amount in the participant's  Plan Account by
the  purchase  price of the  stock as  determined  above.  Participants  receive
certificates annually for all shares purchased during that year. They may retain
the certificated shares or sell them in the open market or otherwise, subject to
securities   and  tax  law   restrictions.   Upon   termination  of  employment,
participants will receive  certificates  evidencing  previously purchased shares
and a return of any balance remaining in the  participant's  account on the date
of termination.

PLAN AMENDMENT AND TERMINATION

      The Board  reserves the right to amend or discontinue  the Plan,  provided
that no  participant's'  existing  rights are adversely  affected,  and provided
further that without Shareholder approval,  no amendment will be effective:  (1)
increasing the aggregate number of shares authorized for purchase under the Plan
or to be purchased by any participant;  (2) materially changing the requirements
for  eligibility to  participate,  or reducing the purchase price formula in the
Plan, or materially  increasing the benefits accruing to participants  under the
Plan; (3) extending the term of the Plan; or (4) otherwise modifying the Plan if
the modification requires shareholder approval to satisfy applicable statutes or
Internal Revenue Service and/or Securities and Exchange Commission regulations.

                                  PROPOSAL SIX

              TO RATIFY THE APPOINTMENT OF HAM, LANGSTON & BREZINA
                 AS THE COMPANY'S INDEPENDENT PUBLIC ACCOUNTANTS

      On April 7, 1998 Coopers & Lybrand L.L.P. ("Former  Accountants") informed
the Company that it had resigned as our  independent  auditors.  The reason,  as
stated in its resignation  letter,  was the Company's then financial  condition.
The  decision  to resign was made by the  former  accountants,  and was  neither
approved nor disapproved by the Board of Directors. There was no adverse opinion
or disclaimer of opinion,  or  qualification  or modification as to uncertainty,
audit scope,  or accounting  principles  for either of the  Company's  prior two
fiscal years and from  December  31, 1997  through the date of its  resignation,
which  disagreements,  if  not  resolved  to  the  satisfaction  of  the  Former
Accountants,  would have caused it to make  reference  thereto in its report and
there  were no  reportable  events  as  defined  in  paragraph  304(a)(1)(v)  of
Regulation S-K promulgated under the Securities Act of 1933.

      On June 26, 1998, we engaged Ham,  Langston & Brezina,  L.L.P.  as our new
independent  accountants  ("Current  Accountants")  as  successor  to the Former
Accountants. The shareholders ratified that appointment for the fiscal year 1997
at the  shareholders'  meeting  held on December  18,  1998.  We are  requesting
shareholder  ratification for appointment of Ham, Langston & Brezina,  L.L.P. as
our  independent  accounts for the fiscal year ending  December  31,  1998.  Our
Current  Accountants  have  indicated  that they will have a  representative  in
attendance  if they  desire  to do so,  and  will be  available  to  respond  to
appropriate questions.

                  MANAGEMENT RECOMMENDS A VOTE FOR PROPOSAL SIX

                          ANNUAL REPORT ON FORM 10-KSB

      A copy of the  Company's  Annual  Report on Form 10-KSB for the year ended
December  31,  1998,  along  with a copy of the  Report on Form  10-QSB  for the
quarter ended September 30, 1999, both as filed with the Securities and Exchange
Commission,  is  enclosed  herewith  as part of the  enclosed  Annual  Report to
Shareholders.  An  additional  copy of the Annual  Report on Form 10-KSB will be
sent to any  shareholder  without charge upon written request made to us at 1304
Langham  Creek Drive,  Suite 300,  Houston,  Texas 77084:  Attention:  Corporate
Communications

                                       26
<PAGE>

                                 OTHER BUSINESS

      The Board of Directors  knows of no other  business that will be presented
for  consideration at the annual meeting.  If other matters are properly brought
before the meeting,  however,  it is the  intention of the persons  named in the
accompanying  proxy to vote the shares  represented  thereby on such  matters in
accordance with their best judgment.


                                            By Order of the Board of Directors,



                                            /s/ Gary H. Brooks

                                            Gary H. Brooks
                                            Secretary
Houston, Texas
November 29, 1999

                                       27
<PAGE>


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<PAGE>
                                    EXHIBIT 1


                  POSITRON CORPORATION ~1999 STOCK OPTION PLAN



                                           Date of Board Approval: June 15, 1999
                                     Date of Shareholder Approval:______________

      1. PURPOSE AND SCOPE.  The purposes of this Plan are to induce  persons of
outstanding  ability and potential to join and remain with Positron  Corporation
(the  "Company"),  to provide an  incentive  for such  employees  as well as for
non-employee consultants to expand and improve the profits and prosperity of the
Company  by  enabling  such  persons  to acquire  proprietary  interests  in the
Company, and to attract and retain key personnel through the grant of Options to
purchase shares of the Company's common stock. As used herein, the term "Option"
includes both Incentive Stock Options and Non-Qualified Stock Options. This 1999
Stock  Option Plan is intended to amend and restate any other stock  option plan
of the Company currently in effect.

      2.  DEFINITIONS.  Each  term set forth in this  Section  2 shall  have the
meaning  set forth  opposite  such term for  purposes  of this Plan  unless  the
context  otherwise  requires,  and for the  purposes  of such  definitions,  the
singular shall include the plural and the plural shall include the singular:

            (a) "Affiliate" shall mean any parent  corporation or subsidiary
corporation of the Company as those terms are defined in Sections 424(e) and (f)
respectively of the Internal Revenue Code of 1986, as amended.

            (b) "Board" shall mean the Board of Directors of the Company.

            (c)  "Committee"  shall  have the  meaning  set  forth in  Section 3
hereof.

            (d) "Company" shall mean Positron Corporation, a Texas  corporation.

            (e) "Code" shall mean the Internal Revenue Code of 1986, as amended.

            (f) "Fair  Market  Value" for a share of Stock  means the price that
the  Board  or the  Committee  acting  in good  faith  determines,  through  any
reasonable  valuation  method  (including but not limited to reference to prices
existing  in any  established  market in which the Stock is  traded),  to be the
price at which a share of Stock might change hands between a willing buyer and a
willing  seller,  neither being under any  compulsion to buy or to sell and both
having reasonable knowledge of the relevant facts.

            (g) "Option" shall mean a right to purchase  Stock granted  pursuant
to the Plan.

            (h) "Exercise  Price" shall mean the purchase price for  Stock under
an Option,  as determined in Sections 7 - "Incentive  Stock  Options" - and  8 -
"Non-Incentive Stock Options" - below.

            (i) "Participant" shall mean an employee or non-employee  consultant
to the Company to whom an Option is granted under the Plan.

            (j) "Plan" shall mean this  Positron  Corporation  1999 Stock Option
Plan.

            (k)  "Stock"  shall  mean the $0.01 par  value  common  stock of the
Company.

            (l)  "1934  Act"  means  the  Securities  Exchange  Act of 1934,  as
amended.

      3.  ADMINISTRATION.  The Plan shall be  administered  (i) with  respect to
individuals  who receive options under the Plan and who are or become subject to
the reporting requirements and short-swing liability provisions of Section 16 of
the  Securities  Exchange Act of 1934,  as amended (the "1934 Act")  ("Reporting
Persons")  by a  committee  consisting  of at least two  members of the


                                       -1-
<PAGE>

Board of Directors of the Company (the "Board"),  each of whom is a non-employee
director  (as such  term is  defined  under  Rule  16b-3 of the 1934  Act)  (the
"Reporting  Persons  Committee")  and (ii) with respect to all  individuals  who
receive  Options  under  the Plan and are who are not  Reporting  Persons,  by a
committee which consists of at least two members of the Board (the "Stock Option
Committee"). For purposes of this Plan, references to the "Committee" shall mean
the Reporting Persons  Committee,  the Stock Option  Committee,  or both, as the
context may require.

      The Committee shall have full authority in its discretion,  subject to and
not inconsistent with the express  provisions of the Plan, to grant Options,  to
determine the Exercise Price and term of each Option,  and to select the persons
to whom, and the time or times at which, Options shall be granted and the number
of shares of Stock to be covered  by each  Option;  to  interpret  the Plan;  to
prescribe,  amend,  and rescind rules and  regulations  relating to the Plan; to
determine the terms and provisions of the option  agreements  (which need not be
identical)  entered into in connection with the grant of Options under the Plan;
and to make all other  determinations  deemed  necessary  or  advisable  for the
administration  of the  Plan.  The Board  may  delegate  to one or more of their
members,  or to one or more agents,  such  administrative  duties as it may deem
advisable,  and the  Board or any  person  to whom it has  delegated  duties  as
aforesaid  may employ one or more  persons to render  advice with respect to any
responsibility  the Board or such person may have under the Plan.  The Board may
employ  attorneys,  consultants,  accountants,  or other persons,  and the Board
shall be entitled  to rely upon the  advice,  opinions,  or  valuations  of such
persons.  All actions taken and all  interpretations  and determinations made by
the Board in good faith shall be final and binding  upon all  Participants,  the
Company,  and all other  interested  persons.  No  member of the Board  shall be
personally liable for any action, determination,  or interpretation made in good
faith with  respect  to the Plan;  and all  members of the Board  shall be fully
protected  by the  Company  in  respect of any such  action,  determination,  or
interpretation.

      4. SHARES SUBJECT TO THE PLAN.  Subject to adjustment under the provisions
of Section 14 - "Effect of Change in Stock  Subject to Plan" - of the Plan,  the
maximum number of shares of Stock that may be optioned or sold under the Plan is
Four Million  (4,000,000).  Such shares may be authorized but unissued shares of
Stock of the Company,  or issued shares of Stock  reacquired by the Company,  or
shares purchased in the open market expressly for use under the Plan. If for any
reason any shares of Stock as to which an Option  has been  granted  cease to be
subject  to  purchase  thereunder,   then  (unless  the  Plan  shall  have  been
terminated) such shares shall become available for subsequent  awards under this
Plan in the discretion of the Board.  The Company shall,  at all times while the
Plan is in force,  reserve such number of common shares as will be sufficient to
satisfy the requirements of all outstanding Options granted under the Plan.

      5. ELIGIBILITY; FACTORS TO BE CONSIDERED IN GRANTING OPTIONS.

            (a) Options may be granted  to: (i) any regular  full-time  employee
(including officers and directors) of either the Company or any affiliate of the
Company; and (ii) any non-employee consultant of the Company.

            (b) In  determining  to whom options shall be granted and the number
of shares of Stock to be  covered  by each  Option,  the Board  shall  take into
account  the  nature the  participants'  duties,  their  present  and  potential
contributions to the success of the Company,  and such other factors as it shall
deem relevant in connection  with  accomplishing  the purposes of the Plan.  The
Board shall also  determine  the  time(s) of grant,  the type and term of Option
granted,  and the time(s) of exercise,  in whole or part. A Participant  who has
been granted an Option  under the Plan may be granted new Options,  which may be
in addition to prior  Options  granted  under the Plan or may be in exchange for
the  surrender  and  cancellation  of prior  Options  having  a higher  or lower
Exercise  Price  and  containing   such  other  terms  as  the  Board  may  deem
appropriate.

      6. TERMS AND CONDITIONS OF OPTIONS.

            (a)  General.   Options  granted  pursuant  to  the  Plan  shall  be
authorized  by  the  Board  and  shall  be  evidenced  by  agreements   ("Option
Agreements")  in such form as the Board  from time to time shall  approve.  Such
Option  Agreements  shall  comply with and be subject to the  following  gen-


                                      -2-
<PAGE>

eral  terms and  conditions,  and shall also  comply  with and be subject to the
provisions  of  Section 7  relating  to  Incentive  Stock  Options  or Section 8
relating to Non-Qualified  Stock Options,  as applicable,  as well as such other
terms  and  conditions  as set  forth  in this  Plan and as the  Board  may deem
desirable, not inconsistent with the Plan.

            (b)  Employment  Agreement.  The Committee  may, in its  discretion,
include in any Option  granted under the Plan a condition  that the  Participant
shall  agree to remain in the  employ  of,  and/or to render  services  to,  the
Company for a period of time (specified in the Option  Agreement)  following the
date the Option is  granted.  No such  Option  Agreement  shall  impose upon the
Company any obligation to employ and/or retain the Participant for any period of
time.

            (c) Manner of  Exercise.  A  Participant  may  exercise an Option by
giving written  notice of such exercise to the Company at its principal  office,
attention to the Secretary,  and paying the Exercise Price either (i) in cash in
full at the time of exercise, or (ii) in the discretion of the Board:

            (d) by delivery of other previously  outstanding common stock of the
Company,

                  (i)  by  an  approved   deferred  payment  schedule  or  other
arrangement,  which  arrangement  shall be  contained  in  writing in the Option
Agreement, in which event an interest rate will be stated which is not less than
the rate then  specified  which will prevent any  imputation of higher  interest
under Section 483 of the Code,

                  (ii) by  retention  by the  Company of some of the Stock as to
which the Option is then being exercised, in which case the Optionee's notice of
exercise  shall  include a statement (1) directing the Company to retain so many
shares that would  otherwise have been delivered by the Company upon exercise of
this Option as equals the number of shares that would have been  surrendered  to
the  Company if the  purchase  price had been paid with  previously  outstanding
stock of the Company,  and (2) confirming  the aggregate  number of shares as to
which this Option is being thus exercised and therefore surrendered, or

                  (iii) in any other form of legal  consideration  acceptable to
the Committee at the time of grant or exercise.

            (e) Time of Exercise.  Promptly  after the exercise of an Option and
the payment of the  Exercise  Price,  either in full or pursuant to the approved
payment  schedule,  the Participant shall be entitled to the issuance of a stock
certificate evidencing ownership of the appropriate number of shares of Stock. A
Participant  shall have none of the  rights of a  shareholder  until  shares are
issued to him/her,  and no adjustment will be made for dividends or other rights
for which the record date has occurred prior to the date such stock  certificate
is issued.

            (f) Number of Shares.  Each Option  shall state the total  number of
shares of Stock to which it pertains.

            (g) Option Period and Limitations on Exercise. The Board may, in its
discretion, provide that an Option may not be exercised in whole or part for any
period(s) of time  specified in the Option  Agreement,  except that the right to
exercise  must be at the rate of at least 20% per year over five  years from the
date the Option is granted,  subject to the further  conditions  of the Plan and
the Option Agreement such as continued  employment.  However,  in the case of an
Option  granted to  officers,  directors,  or  non-employee  consultants  of the
Company or any of its  affiliates,  the Option  may  become  fully  exercisable,
subject to the further  conditions of the Plan and the Option Agreement,  at any
time or during any period  established  by the  Company or its  affiliates.  The
exercise  period  shall be  stated in the  Option  Agreement.  No Option  may be
exercised  after the  expiration of ten years from the Grant Date. No Option may
be  exercised as to less than one hundred  (100) shares at any one time,  or the
remaining shares covered by the Option if less than one hundred (100).

      7. INCENTIVE  STOCK OPTIONS.  The Board may grant Incentive  Stock Options
("ISOs")  which  meet  the  requirements  of Section 422 of the Code, as amended
from time to time.

            (a) ISOs may be  granted  only to  employees  of the  Company or its
affiliates.

                                      -3-
<PAGE>

            (b) Each ISO granted under the Plan must be granted  within 10 years
from  the  date  the Plan is adopted or is approved by the  shareholders  of the
Company, whichever is earlier.

            (c) The purchase  price shall not be less than the Fair Market Value
of the common shares at the time of grant,  except that the purchase price shall
be 110% of the  Fair  Market  Value  in the case of any  person  who owns  stock
possessing  more than 10% of the total  combined  voting power of all classes of
stock of the Company or its affiliates at the time of grant.

            (d) No ISO granted under the Plan shall be exercisable  more than 10
years  from the date of grant,  except  that in the case of any  person who owns
stock possessing more than 10% of the total combined voting power of all classes
of stock of the Company or its affiliates at the time of grant,  no ISO shall be
exercisable more than five years from the date of grant.

            (e) To the extent  that the  aggregate  Fair  Market  Value of stock
(determined at the time of grant) with respect to which ISOs are exercisable for
the first time by any individual during any calendar year under all plans of the
Company and its subsidiaries exceeds $100,000,  such options shall be treated as
Non-Qualified stock options, but only to the extent of such excess. Should it be
determined  that an entire  option or any portion  thereof  does not qualify for
treatment  as an ISO by  reason  of  exceeding  such  maximum,  or for any other
reason, such option or portion shall be considered a Non-Qualified stock option.

      8. NON-QUALIFIED  STOCK OPTIONS.  The Board may grant  Non-Qualified Stock
Options  ("NSOs")  under the Plan in addition to or in lieu of  Incentive  Stock
Options.  NSOs are not intended to meet the  requirements  of Section 422 of the
Code, and shall be subject to the following terms and conditions:

            (a) NSOs may be granted to any eligible Participant.

            (b) The  purchase  price of the shares  shall be  determined  by the
Board in its absolute  discretion,  but in no event shall such purchase price be
less than 85% of the Fair  Market  Value of the shares at the time of grant.  In
the case of any  person  who owns  stock  possessing  more than 10% of the total
combined  voting power of all classes of stock of the Company or its  affiliates
at the time of grant, the price shall be 110% of the Fair Market Value.

            (c) NSOs shall not be exercisable  more than ten years from the date
of grant.

      9.  TRANSFERABILITY.   Options  granted  under  this  Plan  shall  not  be
transferable other than by will or by the laws of descent and distribution,  and
during a  Participant's  life  shall be  exercisable  only by such  Participant.
Options granted under this Plan shall not be subject to execution, attachment or
other process.

      10.  TERMINATION  OF  EMPLOYMENT.  Options  held by  employees,  including
directors, shall terminate three months after termination of employment with the
Company or affiliate, unless:

            (a) If employment is terminated  for cause,  as such term is defined
pursuant to the  optionee's  contract of employment  or the Option  Agreement or
otherwise by Texas law, the Option shall immediately terminate.

            (b) If  termination  is  due  to the employee's  permanent and total
disability within the meaning of Section 22(e)(3) of the Code, the Option may be
exercised at any time within one year following termination.

            (c) The Option  Agreement  by its terms  specifies  whether it shall
terminate  later than three (3) months after  termination of employment.  If the
Option may be  exercised  later than three  months  following  termination,  any
portion  exercised  beyond three months shall be a  non-qualified  stock option.
This  paragraph  shall not be  construed to extend the term of any Option nor to
permit anyone to exercise the Option after expiration of its term.

            (d)  Options  granted  under this Plan shall not be  affected by any
change of duties or position of the Participant so long as Participant continues
to be a regular, full-time employee of the Company. Any Option, or any rules and
regulations relating to the Plan, may contain such provi-


                                      -4-
<PAGE>

sions as the Board shall approve with reference to the determination of the date
employment terminates.  Nothing in the Plan or in any Option granted pursuant to
the Plan shall confer upon any  Participant  any right to continue in the employ
of the  Company or shall  interfere  in any way with the right of the Company to
terminate such employment at its will at any time.

      11.  RIGHTS IN THE EVENT OF DEATH.  If an employee dies during the term of
this Option,  his/her legal representative or representatives,  or the person or
persons  entitled to do so under the employee's last will and testament or under
applicable  intestate  laws,  shall have the right to exercise this Option,  but
only for the number of shares as to which the  employee was entitled to exercise
this  Option on the date of his  death,  and such  right  shall  expire and this
Option shall  terminate  six (6) months after the date of Grantee's  death or on
the  expiration  date of this  Option,  whichever  date is sooner.  In all other
respects, this option shall terminate upon such death.

      12.  LEAVES OF ABSENCE.  For purposes of the Plan, an employee on approved
leave of absence from the Company shall be considered as currently  employed for
90 days  following  beginning  the  leave  or for so long as  his/her  right  to
reemployment is guaranteed by statute or contract, whichever is longer.

      13. EFFECT OF CHANGE IN STOCK SUBJECT TO PLAN.

            (a) In the  event  that  outstanding  common  shares  are  hereafter
changed by reason of reorganization,  merger,  consolidation,  recapitalization,
reclassification,  stock split,  combination of shares,  stock dividends and the
like, the Board shall make adjustments as it deems  appropriate in the aggregate
number of shares  advisable  under the Plan and the number and price  subject to
outstanding  option. Any adjustment shall apply  proportionately and only to the
unexercised portion of options granted.

            (b) In the event the  Company  dissolves  or  liquidates  or another
entity succeeds to its assets,  or in the event of a merger or  consolidation in
which the  Company  is not the  surviving  entity,  or in the event of a reverse
merger in which the Company survives but its common stock immediately  preceding
the merger is converted  into other  property by virtue of the merger,  then the
surviving  entity shall assume the  outstanding  Options or  substitute  similar
Options for those outstanding.

      14. AGREEMENT AND REPRESENTATION OF EMPLOYEES.

            (a) Acquiring stock for investment  purposes.  As a condition to the
exercise of any Option,  the  Company  may  require the person  exercising  such
Option to represent  and warrant at the time of such exercise that any shares of
Stock  acquired at exercise are being  acquired only for  investment and without
any present  intention to sell or  distribute  such shares if, in the opinion of
Company's  counsel,  such  representation  is  required or  desirable  under the
Securities Act of 1933 or any other applicable law,  regulation,  or rule of any
governmental agency.

            (b) Withholding.  With respect to the exercise of any Option granted
under this Plan, each Participant shall fully and completely consent to whatever
the Board directs to satisfy the federal and state tax withholding requirements,
if any, which the Board in its discretion deems applicable to such exercise.

            (c)  Delivery.  The Company is not  obligated  to deliver any common
shares until there has been qualification  under or compliance with all state or
federal laws,  rules and  regulations  deemed  appropriate  by the Company.  The
Company  will use all  reasonable  efforts  to  obtain  such  qualification  and
compliance.

      15.  AMENDMENT AND  TERMINATION  OF PLAN. The Board,  by  resolution,  may
terminate,  amend,  or revise  the Plan with  respect  to any shares as to which
Options have not been granted;  provided however, that any amendment that would:
(a) increase the  aggregate  number of shares of common stock that may be issued
under the Plan, (b) materially  increase the benefits  accruing to Participants,
or (c) materially modify the requirements as to eligibility for participation in
the Plan,  shall be subject to shareholder  approval  within 12 months before or
after adoption.  It is expressly  contemplated that the Board may amend the Plan
in any  respect  necessary  to  provide  employees


                                      -5-
<PAGE>

with the maximum benefits  available under and/or to satisfy the requirements of
or amendments to Section 422 of the Code.

      No termination,  modification or amendment of the Plan may however,  alter
or impair the rights  conferred  by an Option  previously  granted  without  the
consent of the individual to whom the Option was previously granted.

       Unless sooner terminated, the Plan shall remain in effect for a period of
ten years from the date of the Plan's adoption by the Board.  Termination of the
Plan shall not affect any Option previously granted.

      16. USE OF  PROCEEDS.  The  proceeds  from the sale of shares  pursuant to
Options granted under the Plan shall constitute general funds of the Company.

      17.  EFFECTIVE  DATE OF PLAN.  The Effective Date of this Plan is June 15,
1999, the effective date it was adopted by the Board,  provided the shareholders
of the Company  approve this Plan within twelve (12) months after such effective
date.  Any  Options  granted  under this Plan  prior to the date of  shareholder
approval  shall  be  deemed  to be  granted  subject  to such  approval.  Should
shareholder  approval not be obtained  within  twelve (12)  months,  any Options
granted pursuant to the Plan shall be null and void.

      18.  INDEMNIFICATION  OF  COMMITTEE.  In addition to such other  rights of
indemnification  as they may have and subject to limitations of applicable  law,
the members of the Committee  shall be  indemnified  by the Company  against all
costs and expenses  reasonably  incurred by them in connection  with any action,
suit or  proceeding to which they or any of them may be a party by reason of any
action  taken or  failure  to act  under or in  connection  with the Plan or any
rights  granted  thereunder  and against all amounts paid by them in  settlement
thereof or paid by them in satisfaction  of a judgment of any such action,  suit
or proceeding, the Board or Committee member or members shall notify the Company
in writing, giving the Company an opportunity at its own cost to defend the same
before such  Committee  member or members  undertake to defend the same on their
own behalf.

      19. INFORMATION  REQUIREMENTS.  The Company shall provide each participant
with annual financial statements.

      20.  GOVERNING  LAW.  The Plan shall be  governed  by,  and all  questions
arising  hereunder,  shall be determined in accordance with the laws of State of
Texas as such laws are applied to  agreements  between Texas  residents  entered
into and to be performed entirely within Texas.



                                      -6-
<PAGE>

                                    EXHIBIT 2


                              POSITRON CORPORATION
                 1999 NON-EMPLOYEE DIRECTORS' STOCK OPTION PLAN



                                         Date of Board Approval: October 6, 1999
                                    Date of Shareholder Approval:_______________


      1. PURPOSE AND SCOPE. This 1999 Non-Employee  Directors' Stock Option Plan
(the  "Plan")  is  adopted  for  the  benefit  of  the   directors  of  Positron
Corporation,  a Texas  corporation  (the  "Company")  who,  at the time of their
service,  are not  employees  of the  Company  or any of its  subsidiaries  (the
"Non-Employee  Directors").  It is  intended  to advance  the  interests  of the
Company by providing the  Non-Employee  Directors with  additional  incentive to
serve the Company by increasing their proprietary interest in the success of the
Company.

      2. ADMINISTRATION.

            (a) The Plan shall be  administered by the Board of Directors of the
Company (the "Board").  The Board may delegate  administration  of the Plan to a
committee ("Committee") comprised of not less than two (2) members of the Board.
If  administration  is delegated to a Committee,  the  Committee  shall have, in
connection  with the  administration  of the Plan,  the powers  possessed by the
Board, subject to such resolutions,  not inconsistent with the provisions of the
Plan,  as may be adopted  from time to time by the Board.  The Board may abolish
the  committee  at any time and  revest in the Board the  administration  of the
Plan.

            (b) The Board shall have the  authority  to adopt,  alter and repeal
such  administrative  rules,  guidelines and practices  governing the Plan as it
shall, from time to time, deem advisable;  to interpret the terms and provisions
of the Plan and any Option granted under the Plan (and any  agreements  relating
thereto);  and to otherwise  supervise the  administration  of the plan,  and to
exercise  such powers and  perform  such acts as the Board  deems  necessary  or
expedient to promote the best  interests  of the Company.  The Board may correct
any defect, supply any omission or reconcile any inconsistency in the Plan or in
any Option in the manner and to the extent it shall deem  necessary to carry the
Plan into effect.

            (c) All actions  taken and all  interpretations  and  determinations
made by the Board in good faith shall be final and binding upon all Non-Employee
Directors, the Company, and all other interested persons.

            (d) No  member  of the  Board  shall be  personally  liable  for any
action, determination,  or interpretation made in good faith with respect to the
Plan;  and all members of the Board shall be fully  protected  by the Company in
respect of any such action, determination, or interpretation.

      3. STOCK SUBJECT TO AND RESERVED FOR THE PLAN.

            (a) The total number of shares of the Company's Common Stock, no par
value (the "Common  Stock"),  with respect to which Options may be granted under
the Plan, shall not exceed the aggregate of 500,000 shares;  provided,  however,
that the  class and  aggregate  number of  shares  which may be  subject  to the
Options granted  hereunder shall be subject to adjustment in accordance with the
provisions  of Section  14 of this Plan.  Such  shares may be  treasury  shares,
reacquired shares or authorized but unissued shares.

            (b) The Company  shall  reserve for  issuance  pursuant to this Plan
such  number of shares of Common  Stock as may from time to time be  subject  to
Options  granted  hereunder.  If any Option  expires or is canceled prior to its
exercise  in full,  the shares  theretofore  subject to such Option may again be
made subject to an Option under the Plan.

                                      -1-
<PAGE>

            (c) All Options granted under the Plan will constitute non-qualified
options (the "Option").

      4. ELIGIBILITY. Options shall be granted only to Non-Employee Directors of
the Company.

      5. NON-DISCRETIONARY GRANT OF OPTIONS.

            (a) Non-Employee  Directors  elected after the effective date of the
Plan.  Initial  Grant.  For so long as this Plan is in  effect  and  shares  are
available  for the grant of Options  hereunder,  each person who is elected as a
Non-Employee Director of the Company for the first time after the effective date
of the Plan,  and who is not and has not been an  employee of the Company or any
of the  Company's  subsidiaries  (as defined in Section  424(f) of the  Internal
Revenue  Code of 1986,  as  amended  (the  "Code") (a "New  Director")  shall be
granted a one-time Option ("Initial Option") to purchase 25,000 shares of Common
Stock at a per  share  exercise  price  equal to 85% of the  Fair  Market  Value
(defined  below)  of a share  of  Common  Stock  on such  date  (subject  to the
adjustments  provided in Section 14 hereof).  This Section 5(a) shall only apply
to New  Director  the first time he or she is elected a director  of the Company
after the effective date of this Plan.

            (b) Annual Options Grant to Non-Employee  Directors.  Annual Option.
In  addition,  for so long as (i) this  Plan is in  effect,  and (ii)  there are
shares available for the grant of Options  hereunder,  each person serving as an
elected Non-Employee Director as of the effective date of this Plan and each New
Director  (together  "Eligible  Director")  shall be granted  automatically,  on
January 1st of each year (or the next day on which the Company's common stock is
traded should the Company's  common stock not trade on such date,  commencing as
of  January  1, 2000 and  subject  to the  adjustments  provided  in  Section 14
hereof),  an Option to  purchase  25,000  shares of Common  Stock at a per share
exercise price equal to 85% of the Fair Market Value (defined  below) of a share
of Common Stock. The foregoing notwithstanding, such Eligible Director must have
served as a  Non-Employee  Director  continuously  for at least thirty (30) days
immediately preceding the first day of January of any given year, in order to be
eligible for grant of an Annual Option as of January 1st of that year.
Both Initial Options and Annual Options shall be Non-Statutory Options.

            (c) Option  Price.  For the  purposes  of this  Section 5, the "Fair
Market Value" as of any  particular  date shall mean (i) the closing sales price
on the immediately preceding business day of a share of Common Stock as reported
on the  principal  securities  exchange on which shares of Common Stock are then
listed or  admitted  to trading or (ii) if not so  reported,  the average of the
closing  bid and asked  prices  for a share of Common  Stock on the  immediately
preceding  business  day as quoted on the  National  Association  of  Securities
Dealers Automated  Quotation System ("NASDAQ") or (iii) if not quoted on NASDAQ,
the average of the closing bid and asked  prices for a share of Common  Stock as
quoted  by the  National  Quotation  Bureau's  "Pink  Sheets"  or  the  National
Association of Securities  Dealers' OTC Bulletin Board System. If the price of a
share of Common Stock shall not be so reported, the Fair Market Value of a share
of Common Stock shall be determined by the Board in its absolute discretion.

      6. OPTION AGREEMENT. Each Option granted under the Plan shall be evidenced
by an agreement,  in a form approved by the Board, which shall be subject to the
terms and  conditions  of the Plan.  Any agreement may contain such other terms,
provisions  and  conditions  as may be  determined by the Board and that are not
inconsistent with the Plan.

      7. VESTING AND TERM OF OPTIONS.

            (a) Each Option  granted under this Plan shall be subject to vesting
pursuant to one of two schedules:  (i) vesting in full on the date of grant;  or
(ii) vesting in four (4) equal installments  commencing on the first anniversary
of the date of grant;  provided,  however, that each such Option,  regardless of
the manner of vesting,  shall be subject to termination as provided in Section 9
hereof.  The schedule of vesting,  whether  vesting in full or in  installments,
shall  be  determined  by the  Board  as part of and at the  time of the  grant;
provided however, that any Option granted under this Plan which vests in full on
the date of grant as set forth in subsection (i) above,  shall be subject,  as a
condition of such Option grant, to the Company's right to repurchase as provided
in Section 16 hereof.

                                      -2-
<PAGE>

            (b) Each  Option  agreement shall also provide that the Option shall
expire  ten years from the date of grant,  unless sooner terminated  pursuant to
Section 9 hereof.

      8.  EXERCISE OF OPTIONS.  Options shall be  exercisable  at any time after
their appropriate  vesting date, subject to termination as provided in Section 9
hereof  and to the  Company's  right to  repurchase  as  provided  in Section 16
hereof.  Options  shall be  exercised by written  notice to the Company  setting
forth the number of shares with  respect to which the Option is being  exercised
and specifying the address to which the  certificates  representing  such shares
are to be mailed.  Such notice shall be accompanied by cash or certified  check,
bank  draft,  or postal  or  express  money  order  payable  to the order of the
Company, for an amount equal to the product obtained by multiplying the exercise
price of the  Option by the  number of shares of Common  Stock  with  respect to
which the Option is then being  exercised.  As  promptly  as  practicable  after
receipt of such written  notification and payment,  the Company shall deliver to
the Eligible  Director a certificate or certificates  representing the number of
shares of Common Stock with respect to which such Option has been so  exercised,
issued in the Eligible Director's name,  provided,  however,  that such delivery
shall be deemed  effected for all purposes  when the  Company's  transfer  agent
shall have deposited such  certificates in the United States mail,  addressed to
the Eligible Director, at the address specified pursuant to this Section 8.

      9. TERMINATION OF OPTIONS.  Except as may be otherwise  expressly provided
in this Plan or otherwise determined by the Board, each Option, to the extent it
shall not have been exercised previously, shall terminate on the earliest of the
following:  (i) on the last day of the three-month period commencing on the date
on which the Eligible Director ceases to be a member of the Board for any reason
other than the death or total disability (within the meaning of Section 22(e)(3)
of the Internal Revenue Code) of the Eligible Director, in which case the option
may be exercised at any time within eighteen (18) months  following  termination
of such directorship or service, during which period the Eligible Director shall
be entitled to exercise all Options held by the Eligible Director on the date on
which the Eligible  Director  ceased to be a member of the Board that could have
been  exercised on such date;  or (ii) ten years after the date of grant of such
Option.

      10.  TRANSFERABILITY OF OPTIONS.  During the term of an Option, the Option
shall not be assignable or otherwise  transferable except by will or by the laws
of descent and distribution.  Each Option shall be exercised during the Eligible
Director's lifetime only by the Eligible Director.

      11. NO RIGHTS AS STOCKHOLDER.  No Eligible  Director shall have any rights
as a stockholder  with respect to shares  covered by an Option until the date of
issuance of a stock certificate or certificates representing such shares. Except
as provided in Section 14 hereof, no adjustment for dividends or otherwise shall
be made if the  record  date  therefore  is  prior to the  date of  issuance  of
certificates  representing shares of Common Stock purchased pursuant to exercise
of this Option.

      12.  INVESTMENT  REPRESENTATIONS.  Whether or not the  Options  and shares
covered by the Plan have been  registered  under the  Securities Act of 1933, as
amended,  each person exercising an option under the Plan may be required by the
Company to give a  representation  in writing that such person is acquiring such
shares for  investment  and not with a view to, or for sale in connection  with,
the  distribution  of any part  thereof.  The Company will endorse any necessary
legend   referring  to  the  foregoing   restriction  upon  the  certificate  or
certificates  representing  any shares  issued or  transferred  to the  Eligible
Director upon the exercise of any Option granted under the Plan.

      13.  AMENDMENT  OR  TERMINATION.  The Board may amend,  modify,  revise or
terminate this Plan at any time and from time to time. All Options granted under
this Plan  shall be  subject  to the terms and  provisions  of this Plan and any
amendment,  modification  or  revision  of this  Plan  shall be deemed to amend,
modify or revise  all  Options  outstanding  under this Plan at the time of such
amendment, modification or revision. If this Plan is terminated by action of the
Board, all outstanding Options may be terminated.

      14.  CHANGES  IN  THE  COMPANY'S  CAPITAL  STRUCTURE.   The  existence  of
outstanding  Options  shall  not  affect  in any way the  right  or power of the
Company or its  stockholders to make


                                      -3-
<PAGE>

or authorize the dissolution or liquidation of the Company, any sale or transfer
of all or any part of the Company's assets or business,  any  reorganization  or
other corporate act or proceeding,  whether of a similar character or otherwise,
any or all adjustments,  recapitalizations,  reorganizations or other changes in
the Company's capital structure or its business,  any merger or consolidation of
the Company, or any issuance of bonds, debentures, preferred or prior preference
stock senior to or affecting the Common Stock or the rights  thereof;  provided,
however, that if (i) the outstanding shares of Common Stock of the Company shall
be subdivided into a greater number of shares or (ii) the outstanding  shares of
Common Stock shall be combined into a smaller number of shares thereof, then (a)
the number of shares of Common Stock  available  for the grant of Options  under
the Plan shall be  proportionally  adjusted  to equal the  product  obtained  by
multiplying  such  number of  available  shares  remaining  by a  fraction,  the
numerator  of which is the number of  outstanding  shares of Common  Stock after
giving effect to such combination or subdivision and the denominator of which is
that number of outstanding  shares of Common Stock prior to such  combination or
subdivision,  (b) the exercise  price of any Option then  outstanding  under the
Plan  shall  be  proportionately  adjusted  to equal  the  product  obtained  by
multiplying  such  exercise  price by a fraction,  the numerator of which is the
number of  outstanding  shares  of Common  Stock  prior to such  combination  or
subdivision and the denominator of which is that number of outstanding shares of
Common Stock after giving effect to such combination or subdivision, and (c) the
number of shares of Common  Stock  issuable  on the  exercise of any Option then
outstanding  under  the Plan or  thereafter  granted  under  the  Plan  shall be
proportionately  adjusted to equal the  product  obtained  by  multiplying  such
number of shares of Common  Stock by a fraction,  the  numerator of which is the
number of  outstanding  shares  of  Common  Stock  after  giving  effect to such
combination  or  subdivision  and the  denominator  of which is that  number  of
outstanding shares of Common Stock prior to such combination or subdivision.

      15. COMPLIANCE WITH OTHER LAWS AND REGULATIONS.

            (a) The Plan, the grant and exercise of Options thereunder,  and the
obligation of the Company to sell and deliver  shares  acquirable on exercise of
such Options,  shall be subject to all applicable  federal and state laws, rules
and regulations and to such approvals by any  governmental or regulatory  agency
or national  securities  exchange as may be required.  The Company  shall not be
required to sell or issue any shares on  exercise of any Option if the  issuance
of such shares shall constitute a violation by the Non-Employee  Director or the
Company  of  any  provisions  of  any  law or  regulation  of  any  governmental
authority.

            (b) Each  Option  granted  under  this Plan  shall be subject to the
requirement that, if at any time the Board shall determine that (i) the listing,
registration  or  qualification  of the shares subject thereto on any securities
exchange or under any state or federal law of the United  States or of any other
country or governmental subdivision thereof, (ii) the consent or approval of any
governmental  regulatory  body,  or (iii)  the  making  of  investment  or other
representations,  are  necessary or desirable  in  connection  with the issue or
purchase of shares subject thereto,  no such Option may be exercised in whole or
in part unless such listing, registration,  qualification,  consent, approval or
representation shall have been effected or obtained,  free of any conditions not
acceptable to the Board.

            (c) These  provisions do not obligate the Company to register either
the Plan,  any option  granted  under the Plan,  or any stock issued or issuable
pursuant to any such Option, under any state or federal law of the United States
or  of  any  other  country  or  governmental   subdivision   thereof.  (d)  Any
determination  by the Board in connection  with any of the above  determinations
shall be final, binding and conclusive.

      16. REPURCHASE RIGHT OF THE COMPANY.

            (a) General.  Shares of stock issued or issuable upon exercise of an
option  grant  with  immediate  vesting,  as set forth in Section  7(a)(i),  are
subject  to  a  right  of  repurchase  by  the  Company.  If  the  service  of a
Non-Employee  Director  to  the  Company  or a  subsidiary  of  the  Company  is
terminated  for any reason  other than by death or total  disability,  except as
otherwise described in Section 16(d), the Company (or any subsidiary  designated
by it) shall have the option for 90 days


                                      -4-
<PAGE>

after the termination of service by the Non-Employee  Director to repurchase all
or any part of his stock  issued or issuable  upon  exercise  of the option,  as
provided in this Section 16.

            (b) Notice.  Within 30 days of receiving  notice from a Non-Employee
Director or his  representative of the termination of the director's  service to
the Company or a subsidiary of the Company,  the Company must give notice to the
director of the  Company's  decision  whether or not to exercise its  repurchase
right.

            (c) Repurchase  Price. The repurchase price per share repurchased in
accordance  with this Section 16 shall be the original per share  purchase price
set  forth in the  accompanying  Notice of Stock  Option  Grant.  The  Company's
repurchase right at this price lapses at the rate of 25% per year, starting with
the first  anniversary of the Option Grant, and continues over 4 years,  without
reference to the date the Option was exercised or became exercisable.

            (d) Shares Acquired Through Exercise of Option After  Termination of
Services.  If the Non-Employee Director exercises in whole or in part his option
after termination of his services to the Company for any reason other than death
or total disability, the Company shall have, for 90 days after the exercise, the
right  to  repurchase  the  shares  so  acquired  upon  written  notice  to  the
Non-Employee  Director. The purchase price and terms of payment will be governed
by Sections 16(c) and (e) of this Plan.

            (e) Payment of the Purchase Price. The Company's right to repurchase
must be exercised for cash or  cancellation of purchase money  indebtedness  for
the shares within 90 days of termination of service by the Non-Employee Director
(or in the case of securities  issued upon exercise of Options after the date of
termination, within 90 days after the date of exercise).

            (f) Death Or Total Disability. There shall be no right of repurchase
by the Company upon the Non-Employee's death or total disability.  The foregoing
notwithstanding, the provisions of this Section 16(g) do not extend or otherwise
affect the  termination  of any Option which shall not have been  exercised,  as
otherwise set forth in Section 9 herein.

            (g) Repurchase Right as to Other Shares. The repurchase right of the
Company  shall  apply  as well to all  shares  or  other  securities  issued  in
connection  with  any  stock  split,   reverse  stock  split,   stock  dividend,
recapitalization,  reclassification,  spin-off, split-off, merger, consolidation
or reorganization ("Other Shares") but such right shall expire on the occurrence
of any event or transaction upon which the Option terminates.

      17.  INDEMNIFICATION  OF BOARD OF  DIRECTORS.  The Company  shall,  to the
fullest extent permitted by law, indemnify,  defend and hold harmless any person
who at  any  time  is a  party  or is  threatened  to be  made  a  party  to any
threatened,  pending or completed  action,  suit or proceeding  (whether  civil,
criminal, administrative or investigative) in any way relating to or arising out
of this Plan or any Options  granted  hereunder  by reason of the fact that such
person is or was at any time a director of the Company against judgments, fines,
penalties,  settlements  and reasonable  expenses  (including  attorneys'  fees)
actually  incurred  by such  person  in  connection  with such  action,  suit or
proceeding.  This right of  indemnification  shall  inure to the  benefit of the
heirs,  executors and  administrators  of each such person and is in addition to
all other rights to which such person may be entitled by virtue of the bylaws of
the Company or as a matter of law, contract or otherwise.

      18. ADDITIONAL  PROVISIONS.  (a) Nothing in the Plan, or in any instrument
executed  pursuant thereto,  shall confer upon any Non-Employee  Director either
the  right  or  the  obligation  to  continue  acting  as a  director  of (or to
employment by) the Company,  nor shall any Plan provision or instrument executed
pursuant  thereto  affect  any  right  of the  Company,  its  Board  and/or  its
shareholders to terminate the  directorship  (or employment) of any Non-Employee
Director  with or without  cause.  (b) In  connection  with each option  granted
pursuant  to the  Plan,  each  Non-Employee  Director  shall  make  arrangements
satisfactory  to the  Company to insure  that the amount of any federal or other
withholding tax required to be withheld with respect to such sale or transfer is
made available to the Company for timely payment of such tax.

                                      -5-
<PAGE>

      19. EFFECTIVE DATE OF THE PLAN. This Plan shall become effective,  subject
to stockholder approval, on October 6, 1999. No Option shall be granted pursuant
to this Plan on or after December 31, 2009.

      20.  GOVERNING  LAW.  The Plan shall be  governed  by,  and all  questions
arising hereunder,  shall be determined in accordance with the laws of the State
of Texas as such laws are applied to agreements  between Texas residents entered
into and to be performed entirely within Texas.


                                      -6-
<PAGE>


                                    EXHIBIT 3


                              POSITRON CORPORATION
                        1999 STOCK BONUS INCENTIVE PLAN~

                                         Date of Board Approval: October 6, 1999
                                     Date of Shareholder Approval: _____________


      1.  PURPOSE  AND  SCOPE.  Positron  Corporation  ("Company")  adopted  the
Positron  Stock  Bonus  Incentive  Plan (the  "Plan") on October 6, 1999.  It is
effective as of November 1, 1999 for the 1999 Plan year. The purpose of the Plan
is to provide selected employees and outside consultants with stock bonus awards
("Bonus  Shares")  to reward them for past  services  and to  encourage  them to
remain in the Company's service as well as providing the Company with a valuable
tool to recruit  and retain  managers,  employees  and  outside  consultants  of
outstanding ability.

      2. DEFINITIONS.

            (a) "Bonus  Shares" means the shares of the  Company's  Common Stock
issuable or issued under the Plan.

            (b) "Committee"  means the Stock Option  Committee  appointed by the
Company's Board of Directors.

            (c) "Company" means Positron Corporation, a Texas Corporation.

            (d)  "Disability"  means that the Participant is unable to engage in
any  substantial  gainful  activity  by  reason  of any  medically  determinable
physical or mental  impairment which can be expected to result in death or which
has lasted, or can be expected to last, for a continuous period of not less than
12 months.

            (e)  "Participant"  means  an  employee  who has been  selected  for
participation in the Plan pursuant to Article 4.

            (f)  "Retirement"  means  that  the  Participant has retired under a
qualified plan, if any, of the Company or is otherwise deemed to have retired by
the Committee.

      3.  ADMINISTRATION.  The Plan shall be  administered  by the Stock  Option
Committee of the Board of Directors (the "Committee"), which has been authorized
to act on behalf of the Company.  The Committee  shall determine the meaning and
application of the provisions of the Plan. Subject to the terms of the Plan, the
Committee shall have the exclusive authority to act on the following matters:

            (a) Select  the  employees,  including  officers,  who are to become
Participants;

            (b) Determine each Participant's stock bonus award;

            (c) Waive or change the Plan's condition as it deems appropriate;

            (d) Adopt, amend or rescind rules,  guidelines and forms relating to
the Plan; and

            (e)  Take  any  other  actions  the  Committee  deems  necessary  or
advisable for the administration of the Plan.

      All decisions, interpretations and other actions of the Committee shall be
final and binding on all Participants and all persons deriving their rights from
a Participant.  No member of the Committee  shall be liable for any action he or
she has taken,  or has failed to take, in good faith with respect to the Plan or
any bonus award. The Committee may delegate such ministerial actions as it deems
necessary or proper.

                                      -1-
<PAGE>

      4.  ELIGIBILITY.  The Participants  shall be selected from time to time by
the Committee from those employees  (including  officers or directors) and those
outside  consultants who, in the opinion of the Committee,  are in a position to
contribute  materially to the attainment of the Company's  financial  objectives
and managerial goals.  Participation may be based on the  recommendations of the
Company's officers,  subject to the Committee's  approval.  Such recommendations
shall include a  recommendation  as to the number of Bonus Shares that should be
awarded to each such  individual.  In  selecting  eligible  participants  and in
determining  the number of Bonus Shares it wishes to award,  the Committee shall
consider the position and responsibility of the eligible participants, the value
of their service to the Company and its subsidiary and such other factors as the
Committee deems pertinent.

      5. BONUS AWARDS.

            (a)  GENERAL.  After an  employee  or  outside  consultant  has been
selected as a Participant,  the Committee will notify the  Participant of his or
her selection by letter (the "Award  Letter").  The Award Letter will advise the
Participant  of the  number  of Bonus  Shares  awarded.  A  Participant  will be
entitled to receive a maximum bonus  representing  40% of his or her salary,  in
the case of an employee.  The intention of the Plan is to reward the Participant
for helping the Company meet its annual business plan goals through a high level
of  goal  oriented   performance  that  substantially   exceeds  the  day-to-day
responsibilities  expected of the  Participant  and for which (s)he is regularly
paid a salary or consulting fee.

            (b) PAYMENT.  The Committee shall determine the Participant's actual
stock  bonus  award (if any) and such bonus  shall be awarded  from time to time
within the Committee's discretion. To minimize the market impact of the issuance
of bonus stock,  shares to be issued to a  Participant  which are valued at less
than  $3,000  will be issued as soon as  practicable  following  the award,  and
shares to be issued to a Participant  which are valued at $3,000 or more will be
issued within 60 days thereafter. Distributions of Bonus Shares may be made from
authorized but unissued  shares.  All  authorized and unissued  shares issued as
Bonus  Shares  shall  be fully  paid  and  nonassessable  shares  and free  from
preemptive rights.

            (c) TERMINATION OF SERVICES. No Participant is eligible to receive a
bonus award  unless  such  Participant  is  employed  by or  actively  providing
services to the Company at the time the Bonus Award is granted.

            (d) DEATH, DISABILITY OR RETIREMENT. In the event that a Participant
ceases to be an employee or service  provider by reason of death,  disability or
retirement the Committee,  in its sole discretion,  may award a partial bonus to
the  Participant  who  otherwise  would be  eligible  (or,  in the  event of the
Participant's  death, to his or her  Beneficiary).  Payment shall be made to the
Participant  (or his or her Beneficiary as the case may be) according to Article
4(2).

            (e) WITHHOLDING  TAXES.  Participants  shall be obligated to satisfy
all  federal and state tax  withholding  obligations  arising  from the award of
Bonus Shares.

            (f) NONTRANSFERABILITY OF RIGHTS. Any right to a stock bonus payment
under  the  Plan  shall  be  nontransferable,  except  that  such  right  may be
transferred to a Beneficiary upon a Participant's  death, as provided in Section
4.4. Any attempted alienation,  assignment,  pledge, hypothecation,  attachment,
execution or similar process, whether voluntary or involuntary,  with respect to
any such right shall be void and, at the  Committee's  option,  shall cause such
right to be forfeited.

      6. STOCK SUBJECT TO THE PLAN.  The total number of shares of the Company's
Common  Stock  ("Common  Stock")  which may be issued  under the Plan  shall not
exceed  1,000,000  shares.  Provided in no event may the Company  make more than
200,000 shares per year  available for issuance  pursuant to bonus awards in any
single  fiscal year of the Company.  The Company  shall,  at all times while the
Plan is in force,  reserve such number of Common shares as will be sufficient to
satisfy the  requirements  of the number of shares  available for issuance under
the Plan.

                                      -2-
<PAGE>

      In the event the  outstanding  shares of  Common  Stock are  increased  or
decreased as a result of any stock split,  stock dividend,  recapitalization  or
other  similar  change in corporate  structure  effected  without the receipt of
consideration,  or if the  Common  Stock  is  converted  into  other  shares  or
securities  of the  Company  or any other  corporation  as a result of a merger,
reorganization, or other similar transaction, then appropriate adjustments shall
be made by the  Committee  to the  class  and/or  number  of  shares  which  are
available  for issuance  under the Plan in order that there shall be no dilution
or enlargement of benefits hereunder.

      7. BENEFICIARY  DESIGNATIONS.  Upon  commencement of  participation,  each
Participant  will name  beneficiaries  under the plan. If no  beneficiaries  are
named  specifically  for this purpose,  the Company will deem any  beneficiaries
named for Life Insurance  purposes  under the Company's Life Insurance  Plan, if
any, to be beneficiaries named under this Plan. If the participant has not named
a beneficiary or if none of the named  beneficiaries  is living when any payment
is to be made,  then (a) the  spouse of the  deceased  Participant  shall be the
beneficiary,  or (b) if the Participant has no spouse living at the time of such
payment,  the then living  children  of the  deceased  Participant  shall be the
beneficiaries in equal shares,  or (c) if the Participant has neither spouse nor
children living at the time of such payment, the estate of the Participant shall
be the beneficiary.  The Participant may change the designation of a beneficiary
from time to time in accordance  with  procedures  established by the Committee.
Any designation of a beneficiary (or an amendment or revocation thereof) will be
effective only if it is made in writing on the  prescribed  form and is received
by the Company or the Committee prior to the Participant's death.

      8.  SHAREHOLDER  RIGHTS.  No  Participant  shall  have  any  rights  as  a
shareholder  until  such time as any Bonus  Shares are  actually  issued to such
Participant.

      9.  NO  EMPLOYMENT  RIGHTS.  No  provision  of the  Plan,  nor  any  bonus
opportunity established under the Plan, will be construed to give any person any
right to remain in the  Company's  service.  The Company  reserves  the right to
terminate any person's service at any time, with or without cause.

      10.  AMENDMENTS  OR  TERMINATIONS.  The  Company  may  amend,  suspend  or
terminate  the Plan at any time and for any reason.  Neither an amendment of the
Plan nor the  termination  thereof  shall  affect  any Bonus  Shares  previously
issued.


      11. CHOICE OF LAW.  The  plan  shall  be  construed in accordance with and
governed by the laws of the state of texas.

                                      -3-
<PAGE>
                      (This Page Intentionally Left Blank)


<PAGE>

                                    EXHIBIT 4

                              POSITRON CORPORATION
                       1999 EMPLOYEE STOCK PURCHASE PLAN



                                         Date of Board Approval: October 6, 1999
                                    Date of Shareholder Approval: ______________


      1. PURPOSE AND SCOPE.  This Employee  Stock  Purchase Plan (the "Plan") is
established to provide  Eligible  Employees with an opportunity  through regular
payroll  deductions  to  purchase  Common  Stock of  Positron  Corporation  (the
"Company") so that they may increase their proprietary  interest in the Company.
The Plan is  intended  to qualify as an  "employee  stock  purchase  plan" under
Section 423 of the Internal Revenue Code.

      2. DEFINITIONS. As used herein, the following definitions shall apply:

            (a) "Board  of  Directors"  means  the  Committee  if  one  has been
appointed, or the Board of  Directors  of the Company if no  Committee  has been
appointed.

            (b) "Code" means the Internal Revenue Code of 1986.

            (c)  "Committee"  means  the  committee  appointed  by the  Board of
 Directors  to  administer  the  Plan  in  accordance  with  Section  3  below -
"Administration" - if one is appointed.

            (d) "Company" means Positron  Corporation and such present or future
Subsidiaries, as defined in Section 425 of the Code, of the Company as the Board
of Directors shall from time to time designate.

            (e)  "Compensation"   means  the  annual  base  rate  of  pay  of  a
Participant as of the first day of an Offering Period,  determined in accordance
with  nondiscriminatory  rules  adopted  by the  Board of  Directors,  including
commissions,  but excluding  income with respect to stock options or other stock
purchases or moving expense reimbursements.

            (f) "Eligible  Employee"  means any regular  employee of the Company
whose  date of hire was at least  six  months  prior to the  commencement  of an
Offering Period or an Interim  Offering  Period and who is customarily  employed
for at least  twenty  (20)  hours per week and more than five (5)  months in any
calendar year.

            (g) "Exchange Act" means the Securities and Exchange Act of 1934.

            (h) "Fair Market Value" of share of Stock means if the shares listed
on any national or regional  securities  exchange,  then the last  reported sale
price on the composite tape of that exchange on the last Business day before the
applicable  date. If the shares of Stock of the same class are not listed on any
national or regional  securities  exchange and if the sales prices for shares of
stock of the same  class in the  over-the-counter  market  are  reported  by the
National  Association  of  Securities  Dealers,  IncAutomatic  Quotations,  Inc.
(NASDAQ)  National  Market  (or  such  other  system  in  use)  at the  date  of
determining  Fair Market  Value,  then Fair Market Value means the last reported
sales price so reported or, if not so reported, then the average of the high bid
and low asked prices on the last Business Day before the date in question.

            (i) "Interim  Offering Period" means each three-month  period during
and within an Offering Period.

            (j) "Option"  means the rights of a  Participant  to purchase  Stock
during the applicable Offering Period.

            (k) "Offering Date" means the first day of each offering Period.

                                      -1-
<PAGE>

            (l)  "Offering   Period"  means,   in  the  absence  of  a  specific
determination  to the  contrary  by the Board of Director  or the  Committee,  a
27-month  period during which  contributions  may be made toward the purchase of
Stock under the Plan. The Board of Directors or the Committee may establish from
time to time Option Periods which may be up to twenty-seven (27) months.

            (m)   "Participant"   means  an  Eligible  Employee  who  elects  to
participate in the Plan.

            (n)  "Plan   Account"  means  the  account   established   for  each
Participant pursuant to the Plan.

            (o)  "Purchase  Price"  means  the price at which  Participants  may
purchase Stock as determined pursuant to the Plan.

            (p) "Stock" means the Common Stock of the Company.

            (q)  "Subsidiary"  means a  corporation  a majority of whose  voting
shares are owned by the Company.

      3.  ADMINISTRATION.  The  Plan  shall  be  administered  by the  Board  of
Directors  and/or by a duly  appointed  Committee.  Whether or not the Board has
delegated administration,  the Board shall have the final power to determine all
questions of policy and expediency that may arise in the  administration  of the
Plan.  The Board of Directors may from time to time remove  members from, or add
members to, the Committee.  Vacancies on the Committee,  howsoever caused, shall
be filled by the Board of  Directors.  The  Committee  shall  select  one of its
members as Chairman,  and shall hold meetings at such times and places as it may
determine.  The interpretation and construction by the Board of Directors or the
Committee of any  provision of the Plan or of any right to purchase  Stock shall
be conclusive and binding on all persons.

            (a) DELEGATION TO COMMITTEE.  The Board may delegate  administration
of the Plan to the  Committee  composed of not fewer than two (2) members of the
Board.  All of the members of such Committee shall be  disinterested  persons as
defined by the  provisions of  subparagraph  3(b) -  "Disinterested  Person." If
administration  is delegated to the  Committee,  the  Committee  shall have,  in
connection with the administration of the Plan, the powers theretofore possessed
by the Board, subject,  however, to such resolutions,  not inconsistent with the
provisions  of the Plan;  as may be adopted from time to time by the Board.  The
Board shall otherwise  comply with the  requirements  of Rule 16b-3  promulgated
under the  Exchange  Act, as from time to time in effect,  The Board may abolish
the  Committee  at any time and  revest in the Board the  administration  of the
Plan. Two members of the Committee shall constitute a quorum for the transaction
of business.

            (b) DISINTERESTED  PERSON. The term "Disinterested  Person," as used
in this Plan, shall mean an  administrator of the Plan,  whether a member of the
Board or of any Committee to which responsibility for administration of the Plan
has been delegated pursuant to subparagraph 3 (a), - "Delegation to Committee" -
who is not during the one year prior to service as an administrator of the plan,
or during such service,  granted or awarded  equity  securities  pursuant to the
plan or any other plan of the Company or any of its affiliates, except that: (A)
participation  in a formula plan meeting the conditions of Rule  16b-3(c)(2)(ii)
pursuant to the  Securities  Exchange Act shall not  disqualify a director  from
being  a  disinterested  person;  (B)  participation  in an  ongoing  securities
acquisition  plan  meeting  the  conditions  in Rule  16b-3(d)(2)(i)  shall  not
disqualify  a director  from being a  disinterested  person;  (C) an election to
receive  an  annual  retainer  fee in  either  cash or an  equivalent  amount of
securities,  or partly in cash and partly in securities,  shall not disqualify a
director from being a  disinterested  person;  and (D)  participation  in a plan
shall not  disqualify  a  director  from  being a  disinterested  person for the
purpose of  administering  another  plan that does not permit  participation  by
directors.  Any such person shall otherwise comply with the requirements of Rule
16b-3 promulgated under the Exchange Act, as from time to time in effect.

            (c) NUMBER OF SHARES TO BE OFFERED.  The maximum aggregate number of
shares  which  shall be offered  under the Plan shall be Five  Hundred  Thousand
(500,000)  shares of Stock,  subject to  adjustment  as  provided in Section 8 -
"Recapitalization, Etc." - hereof In the event that any Option granted under the
Plan  expires or is  terminated  for any reason,  such shares  allocable

                                      -2-
<PAGE>

to the  unexercised  portion of such Option  shall again be subject to an Option
under  the  Plan.  The  stock  subject  to the Plan may be  unissued  shares  or
reacquired shares, bought on the market or otherwise.

      4. ELIGIBILITY AND PARTICIPATION.

            (a) INITIAL  PARTICIPATION.  An  Eligible  Employee  shall  become a
Participant on an Offering Date after satisfying the eligibility requirements by
delivering  to the  Company's  payroll  office an  enrollment  form  authorizing
payroll  deductions  not less than ten (10) business days prior to such Offering
Date. An Eligible  Employee who did not enroll in the Plan prior to the Offering
Date, or a person who becomes an Eligible  Employee  after an Offering Date, may
enroll in the Plan for the remainder of the Offering  Period as of the beginning
of the next Interim  Offering Period by completing and filing an enrollment form
prior to the commencement date of such Interim Offering Period.

            (b)  CONTINUED  PARTICIPATION.  A  Participant  shall  automatically
participate in each  successive  Offering  Period  (including  Interim  Offering
Periods)  until  such time as such  Participant  withdraws  from the Plan as set
forth below.  A Participant  is not required to file any  additional  enrollment
forms for subsequent  Offering  Periods or Interim  Offering Periods in order to
continue participation in the Plan.

            (c) PAYROLL  DEDUCTION RATE. The Participant  shall designate on the
enrollment  form the  percentage  of  Compensation  which  s/he  elects  to have
withheld  for the  purchase of Stock,  which may be 2%, 4%, 6%, 8% or 10% of the
Participant's Compensation. A Participant may reduce (but not increase) the rate
of payroll withholding during an Offering Period by filing an amended enrollment
form with the  payroll  office at any time prior to the first day of any Interim
Offering  Period (for which such change is to be  effective),  but not more than
three (3) changes may be made in any  Offering  Period (or such other  number of
changes as may be approved by the Board or the  Committee).  A  Participant  may
increase or decrease the rate of payroll  deduction for any subsequent  Offering
Period by filing with the Company a new enrollment  form for payroll  deductions
not less  than ten (10)  days  prior to the  Offering  Date for such  subsequent
Offering Period.

            (d) MAXIMUM ELECTION.  By enrolling in the Plan, a Participant shall
be deemed to have  elected to  purchase  the maximum  number of whole  shares of
Stock which can be purchased with the amount of the  Participant's  Compensation
which is  withheld  during  the  Offering  Period;  provided,  however,  that no
Participant may purchase shares of Stock in excess of the amount permitted under
Section 9 - "Limitation on Stock Ownership."

            (e) OFFERING PERIOD.  Any Options granted pursuant to the Plan shall
be subject to the Company obtaining all necessary  governmental approvals and/or
qualifications of the sale and/or issuance of Options and/or Stock.

            (f) PURCHASE PRICE. The Purchase Price for each share of Stock to be
purchased  under the Plan shall be eighty-five  percent (85)% of the Fair Market
Value of such  share on either (i) the  Offering  Date (or the date of entry for
new or  re-enrolling  employees)  or (ii) the last day of each Interim  Offering
Period, whichever is less.

            (g)  CONTRIBUTIONS.  The  Purchase  Price  of  the  Stock  shall  be
accumulated by payroll deductions throughout the Offering Period, which shall be
applied  automatically  to purchase  Stock at the end of each  Interim  Offering
Period. In the absence of a contrary  determination prior to the commencement of
an Offering  Period,  each  Interim  Offering  Period  shall have a  three-month
duration. At the end of each Interim Offering Period, accrued payroll deductions
will be  automatically  applied to the purchase of Stock at the Purchase  Price.
Payroll  deductions  shall  commence on the first payday  following the Offering
Date (or, in the case of a new or  re-enrolling  employee,  on the first  payday
following the commencement of the applicable  Interim Offering Period) and shall
continue unless altered or terminated as provided in the Plan.

            (h) EFFECT OF LEAVE OF ABSENCE.  During a leave of absence  approved
by the Company,  a Participant  may, for such period as the Committee shall deem
reasonable,  continue  con-


                                      -3-
<PAGE>

tributions  to the Plan by making  cash  payments  to the  Company on his or her
normal paydays in an amount equal to the difference between the amount of his or
her regular payroll deductions taken while such employee was participating under
the Plan and the amount of his payroll  deductions  taken while on such leave of
absence. Failure to pay any installment within ten (10) days after the payday on
which it is due shall be treated as a withdrawal from the Plan.

            (i) PURCHASE OF STOCK.  The Company will  maintain a Plan Account on
its books in the name of each  Participant,  On each payday the amount  deducted
from the Participant's  Compensation will be credited to the Participant's  Plan
Account.  No interest shall accrue on any such payroll deductions As of the last
day of each Interim  Offering Period the amount then in the  Participant's  Plan
Account  will  be  divided  by  the  Purchase   Price  and  the  amount  in  the
Participant's  Plan Account shall be used to purchase the number of whole shares
of Stock which result.  Share certificates  representing the number of shares of
Stock so purchased  shall be issued and delivered to the  Participant as soon as
reasonably  practicable  after the close of each Interim  Offering  Period.  Any
balance  remaining  in a  Participant's  Plan  Account  at the end of an Interim
Offering  Period after deducting the amount of the Purchase Price for the number
of whole shares issued to the Participant  shall become the beginning balance in
the  Participant's  Plan Account for the next following Interim Offering Period.
Any  balance  remaining  in the  Participant's  Plan  Account  at the  end of an
Offering  Period after deducting the amount of the Purchase Price for the number
of whole shares issued to the Participant  shall become the beginning balance in
the Participant's Plan Account for the next following Offering Period unless the
Participant elects to withdraw from participation.  If the Participant withdraws
from  participation,  the  balance in the  Participant's  Plan  Account  will be
refunded to the Participant, without interest.

            (j)   WITHDRAWAL.   A   Participant   may  elect  to  withdraw  from
participation in the Plan at any time before the last day of an Interim Offering
Period by filing the  prescribed  form with the payroll  office.  At the time of
withdrawal  the  amount  credited  to the  Participant's  Plan  Account  will be
refunded in cash,  without  interest.  Upon withdrawal from the Plan accumulated
payroll deductions,  if any, shall be returned to the withdrawn  Participant and
the withdrawn Participant's interest in the Plan shall terminate. In the event a
Participant  voluntarily  elects to withdraw from the Plan, such Participant may
not resume  participation in the Plan until after the expiration of one complete
Interim Offering Period;  re-enrollment  shall be made in the same manner as set
forth above for initial participation in the Plan.

      5. PRO RATA  ALLOCATION.  In the event that the aggregate number of shares
which all Participants elect to purchase during an Interim Offering Period shall
exceed the number of shares remaining available for issuance under the Plan, the
number  of shares to which  each  Participant  shall  become  entitled  shall be
determined  by  multiplying  the number of shares  available  for  issuance by a
fraction,  the  numerator  of  which  is the sum of the  number  of  shares  the
Participant  has elected to purchase and the  denominator of which is the sum of
the number of shares which all Participants have elected to purchase.

      6. EFFECT OF  TERMINATION OF  EMPLOYMENT.  Termination of a  Participant's
employment for any reason,  including  retirement or death,  or the failure of a
Participant  to remain an  Eligible  Employee  shall be treated as a  withdrawal
under  the Plan.  In the event of the  Participant's  death,  the  refund of the
Participant's   Plan  Account   shall  be  paid,   without   interest,   to  the
representative of the Participant's estate. A transfer by a Participant from the
Company to a Subsidiary, from one Subsidiary to another, or from a Subsidiary to
the Company shall not be treated as a termination of employment.

      7. RIGHTS NOT TRANSFERABLE.  The rights or interests of any Participant in
the Plan,  in any Option  granted  under the Plan,  or in any Stock or moneys to
which he or she may be entitled under the Plan,  shall not be,  transferable  by
voluntary  or  involuntary  assignment  or by  operation of law, or by any other
manner   otherwise  than  by  will  or  the  applicable   laws  of  descent  and
distribution. If the Participant shall in any manner attempt to transfer, assign
or otherwise  encumber his or her rights or interests under the Plan, other than
by will, such act shall be treated as a withdrawal from the Plan.

                                      -4-
<PAGE>

      8.   RECAPITALIZATION,   ETC.  Subject  to  any  required  action  by  the
shareholders  of the  Company,  the  number of shares of Stock  covered  by each
Option under the Plan which has not yet been  exercised and the number of shares
of Stock which have been authorized for issuance under the Plan but have not yet
been placed under an Option (collectively the "Reserves"),  as well as the price
per share of Stock  covered by each Option under the Plan which has not yet been
exercised, shall be proportionately adjusted for any increase or decrease in the
number of issued  shares of Stock  resulting  from a stock split,  reverse stock
split, stock dividend,  combination or  reclassification  of Stock, or any other
increase or decrease in the number of shares of Stock effected  without  receipt
of  consideration  by the Company;  provided,  however,  that  conversion of any
convertible securities of the Company shall not be deemed to have been "effected
without receipt of  consideration."  Such adjustment shall be made by the Board,
whose  determination  in that respect  shall be final,  binding and  conclusive.
Except as expressly  provided  herein,  no issue by the Company of the shares of
Stock of any class shall affect,  and no  adjustment by reason  thereof shall be
made with  respect  to,  the  number or price of shares of Stock  subject  to an
Option.

      In the event of the proposed  dissolution  or  liquidation of the Company,
the Offering Period will terminate immediately prior to the consummation of such
proposed  action,  unless  otherwise  provided  by the Board.  In the event of a
proposed sale of all or substantially  all of the assets of the Company,  of the
merger of the Company  with or into another  corporation,  each option under the
Plan shall be assumed  or an  equivalent  option  shall be  substituted  by such
successor corporation,  unless the Board determines, in the exercise of its sole
discretion and in lieu of such assumption or substitution,  that the Participant
shall  have the right to  exercise  the  Option as to all of the  opined  Stock,
including  shares as to which the Option would not otherwise be exercisable.  If
the  Board  makes  an  Option  fully   exercisable  in  lieu  of  assumption  or
substitution in the event of a merger or sale of assets,  the Board shall notify
the  Participant  that the  Option  shall be fully  exercisable  for a period of
thirty (30) days from the date of such  notice,  and the Option  will  terminate
upon the expiration of such period.

      The  Board may  also,  if it so  determines  in the  exercise  of its sole
discretion,  make provision for adjusting the Reserves, as well as the price per
share of Stock covered by each outstanding Option, in the event that the Company
effects one or more  reorganizations,  recapitalizations,  rights  offerings  or
other  increases or reductions of shares of its  outstanding  Stock,  and in the
event  of  the  Company  being  consolidated  with  or  merged  into  any  other
corporation.

      9. LIMITATION ON STOCK OWNERSHIP.  Notwithstanding any provision herein to
the contrary, no Participant shall be granted a right to purchase Stock pursuant
to  Section  4 -  "Eligibility  and  Participation"  - if (i) such  Participant,
immediately  after electing to purchase such Stock,  would own Stock  possessing
five (5)  percent  or more of the total  combined  voting  power or value of all
classes of stock of the Company or any parent or Subsidiary  of the Company,  or
(ii) under the terms of the Plan the rights of the  employee to  purchase  Stock
under this and all other qualified  employee stock purchase plans of the Company
or its  Subsidiaries  would accrue at a rate that exceeds $20,000 of fair market
value of such Stock (determined on the Offering Date) for each calendar year for
which such right is  outstanding  at any time.  For  purposes of this Section 9,
ownership  of Stock  shall be  determined  by the  attribution  rules of Section
424(d) of the Code and  Participants  shall be considered to own any Stock which
they have a right or option to purchase  under this or any other stock  purchase
plan.

      10.  LIMITATIONS  ON OFFICERS AND DIRECTORS.  Participants  subject to the
provisions  of  Section 16 of the Exchange Act (Company  officers and directors)
must comply with the following requirements:

            (a) Shares of Stock purchased  pursuant to the Plan must be held and
may not be transferred for a period of six (6) months from the date of purchase,
provided,  however,  that  distributions  in connection with death,  retirement,
disability,  termination of employment,  or a qualified domestic relations order
as  defined  by the  Code,  or the  rules  thereunder,  are not  subject  to the
requirement set forth in this subparagraph 10(a).

                                      -5-
<PAGE>

            (b) Officer and director Participants who cease participation in the
Plan may not participate again for a period of at least six (6) months.

            (c) Shares of Stock purchased  pursuant to the Plan must be held for
at least six (6) months from the date the Purchase Price is fixed.

      11. RIGHTS AS AN EMPLOYEE.  Nothing in the Plan shall be construed to give
any Participant the right to remain in the employ of the Company or a Subsidiary
or to affect the right of the Company and its Subsidiaries or the Participant to
terminate such employment at any time with or without cause.

      12.  RIGHTS AS A  SHAREHOLDER.  A  Participant  shall  have no rights as a
shareholder  with  respect  to any shares of Stock he or she may have a right to
purchase  under the Plan until the date of  issuance of a stock  certificate  to
such Participant for shares issued pursuant to the Plan.

      13. COVENANTS OF THE COMPANY.

            (a) During  the  terms of  the  rights  granted under the Plan,  the
Company shall keep available at all times the number of shares of stock required
to satisfy such rights.

            (b) The Company shall seek to obtain from each regulatory commission
or agency having jurisdiction over the Plan such authority as may be required to
issue and sell  shares of Stock upon  exercise of the rights  granted  under the
Plan. If the Company is unable to obtain from any such regulatory  commission or
agency the  authority  which  counsel for the Company  deems  necessary  for the
lawful  issuance and sale of stock under the Plan, the Company shall be relieved
from any  liability  for  failure to issue and sell stock upon  exercise of such
rights unless and until such authority is obtained.

      14. USE OF PROCEEDS FROM STOCK.  Proceeds from the sale of stock  pursuant
to rights granted under the Plan shall constitute general funds of the Company.

      15.  AMENDMENT OR TERMINATION  OF THE PLAN.  The Board of Directors  shall
have the  right to  amend,  modify  or  terminate  the Plan at any time  without
notice,  provided that no Participant's  existing rights are adversely  affected
thereby,  and provided  further that no amendment of the Plan shall be effective
until such amendment is approved by a vote of the holders of at least a majority
of the  outstanding  shares of Common Stock of the Company  within twelve months
before  or after  the date  upon  which  such  action  is taken by the  Board of
Directors, if such amendment would:

            (a) Increase  the  aggregate  number of shares of Stock to be issued
under  the Plan  (except as  provided in Section  8  "Recapitalization,  Etc." -
hereof);

            (b)  Materially   modify  the   requirements   for   eligibility  to
participate in the Plan;

            (c)  Increase  the  maximum  number  of  shares  of  Stock  which  a
Participant may purchase in any Offering Period;

            (d) Extend the term of the Plan;

            (e) Alter the Purchase  Price  formula so as to reduce the price for
shares of Stock to be purchased under the Plan;

            (f)  Otherwise   materially   increase  the  benefits   accruing  to
Participants under the Plan; or

            (g) Cause the Plan to fail to meet the  requirements of an "employee
stock purchase plan" under Section 423 of the Code.

      16. TERMINATION OR SUSPENSION OF THE PLAN.

            (a) The Board may suspend or terminate the Plan at any time.  Unless
sooner  terminated,  the Plan shall  terminate  ten (10) years from the date the
Plan is adopted by the Board or approved  by the  stockholders  of the  Company,
whichever is earlier.  No rights may be granted under the Plan while the Plan is
suspended or after it is terminated.

                                      -6-
<PAGE>

            (b) Rights and  obligations  under any rights granted while the Plan
is in effect shall not be altered or impaired by  suspension or  termination  of
the Plan,  except  with the  consent  of the  person to whom  such  rights  were
granted.


      17.  EFFECTIVE DATE OF PLAN. The plan shall become effective upon adoption
by the Board or the shareholders, whichever is earlier. Rights granted under the
Plan shall be subject to revocation  unless and until the Plan has been approved
by the shareholders of the Company.


                                      -7-
<PAGE>

                      (This Page Intentionally Left Blank)


<PAGE>

                              POSITRON CORPORATION
               1999 EMPLOYEE STOCK PURCHASE PLAN ENROLLMENT FORM



      For the Offering Period beginning:  _____________, _____________

      For the Interim (Three Month)
      Offering Period beginning:  _____________, _____________

_______ Application to begin participation
_______ Change in Payroll Deduction Rate~

_______ Change of Beneficiary(ies)



      1.  _________________hereby  elects to  participate  in the 1999  Positron
Corporation  Employee  Stock  Purchase  Plan (the  "Stock  Purchase  Plan")  and
subscribes to purchase  shares of the Company's  Common Stock in accordance with
this Enrollment Form and the Employee Stock Purchase Plan.

      2. I hereby authorize payroll  deductions from each paycheck in the amount
of 2%, 4%,  6%, 8% or 10%  (please  circle  one) of my  Compensation  during the
Offering Period in accordance with the Stock Purchase Plan.

      3. I understand that said deductions shall be accumulated for the purchase
of  shares  of Common  Stock at the  applicable  Purchase  Price  determined  in
accordance  with the Stock Purchase Plan. I understand that if I do not withdraw
from an Offering  Period,  any  accumulated  payroll  deductions will be used to
automatically purchase shares. I understand that no interest shall accrue on any
funds deducted under the terms of the Plan.

      4. I have  received  a copy of the  complete  "1999  Positron  Corporation
Employee Stock Purchase Plan." I understand that my  participation  in the Stock
Purchase Plan is in all respects  subject to the terms of the Plan. I understand
that  participation  in the Stock  Purchase Plan under this  Enrollment  Form is
subject to obtaining shareholder approval of the Stock Purchase Plan.

      5. Shares  purchased for me under the Stock Purchase Plan should be issued
in the name(s) of (employee and/or spouse only).

      6. I understand that if I dispose of any shares received by me pursuant to
the Plan within 2 years after the applicable Offering Date (the first day of the
Offering Period during which I purchased such shares) or within I year after the
final day of the applicable  Interim  Offering Period (the date I purchased such
shares),  I will be treated for federal  income tax purposes as having  received
ordinary income at the time of such disposition in an amount equal to the excess
of the fair market value of the shares at the time such shares were delivered to
me over the price  which I paid for the  shares.  I HEREBY  AGREE TO NOTIFY  THE
COMPANY IN WRITING WITHIN 30 DAYS AFTER THE DATE OF ANY DISPOSITION OF MY SHARES
AND I WILL MAKE ADEQUATE  PROVISION FOR FEDERAL,  STATE OR OTHER TAX WITHHOLDING
OBLIGATIONS,  IF ANY, WHICH ARISE UPON THE DISPOSITION OF THE COMMON STOCK.  The
Company may, but will not be obligated  to,  withhold from my  compensation  the
amount  necessary to meet any applicable  withholding  obligation  including any
withholding  necessary to make  available to the Company any tax  deductions  or
benefits  attributable to sale or early  disposition of Common Stock by me. If I
dispose of such shares at any time after the  expiration  of the holding  period
described  above,  I  understand  that I will be treated for federal  income tax
purposes as having  received  income only at the time of such  disposition,  and
that such  income  will be taxed as  ordinary  income  only to the  extent of an
amount  equal to the  lesser of (1) the excess of the fair  market  value of the
shares at the time of such  disposition over the purchase price which I paid for
the shares or (2) 15% of the fair market value of the shares on the first day of
the applica-

                                      -9-
<PAGE>

ble Offering  Period.  The  remainder of the gain, if any,  recognized.  on such
disposition will be taxed as capital gain.

      7. I hereby agree to be bound by the terms of the Stock Purchase Plan. The
effectiveness  of this  Enrollment  Form is  dependent  upon my  eligibility  to
participate in the Employee Stock Purchase Plan.

      8. In  the  event  of  my  death, I  hereby  designate the following as my
beneficiary(ies)  to  receive  all  payments  and  shares due me under the Stock
Purchase Plan:


NAME: (Please print)     _________________________________________________
                            (First)          (Middle)          (Last)

Relationship             _________________________________________________
                         Relationship

                         _________________________________________________
                         (Address)

NAME: (Please print)     _________________________________________________
                             (First)          (Middle)          (Last)

Relationship             _________________________________________________
                         Relationship

                         _________________________________________________
                        (Address)


                                      -2-

<PAGE>



             POSITRON CORPORATION~1999 EMPLOYEE STOCK PURCHASE PLAN


                              NOTICE OF WITHDRAWAL



      The  undersigned  participant in the Offering  Period of the 1999 Positron
Corporation  Employee Stock Purchase Plan which began on 19 (please insert date)
hereby  notifies the Company that he or she hereby  withdraws  from the Offering
Period. S/He hereby directs the Company to pay to the undersigned as promptly as
practicable  all the payroll  deductions  credited  to his or her  account  with
respect to such Offering Period. The undersigned understands and agrees that his
or her option for such Offering  Period will be  automatically  terminated.  The
undersigned  understands further that no further payroll deductions will be made
for the purchase of shares in the current  Offering  Period and the  undersigned
shall  be  eligible  to  participate  in  succeeding  Offering  Periods  only by
delivering to the Company a new  Enrollment  Form. The  undersigned  understands
that upon withdrawal from a particular  Offering Period,  he or she is precluded
from subsequent participation for a period of time specified in the Plan.



                               Name and Address of Participant

                               _______________________________

                               _______________________________

                               _______________________________

                               Signature

                               _______________________________

                               Dated:_________________________




                                      -1-
<PAGE>

                      (This Page Intentionally Left Blank)

<PAGE>
      THE UNDERSIGNED HEREBY ACKNOWLEDGE RECEIPT OF (A) NOTICE OF ANNUAL MEETING
OF  SHAREHOLDERS  TO BE HELD  DECEMBER  17,  1999,  (B) THE  ACCOMPANYING  PROXY
STATEMENT,  AND (C) THE ANNUAL REPORT OF THE COMPANY ON FORM 10-KSB FOR THE YEAR
ENDED  DECEMBER 31, 1998 AND THE QUARTERLY  REPORT OF THE COMPANY ON FORM 10-QSB
FOR THE QUARTER ENDED  SEPTEMBER 30, 1999.  THIS PROXY WILL BE VOTED AS DIRECTED
BUT IF NO INSTRUCTIONS ARE SPECIFIED, THIS PROXY WILL BE VOTED FOR THE PROPOSALS
ABOVE.

                                         Date:____________________________, 1999

                                         _______________________________________

                                         _______________________________________
                                                (Signature of Stockholder)

                                         Please   sign   exactly  as   signature
                                         appears     at     left.     Executors,
                                         administrators,   traders,   guardians,
                                         attorneys-in-fact,   etc.  should  give
                                         their  full  titles.  If  signer  is  a
                                         corporation, please give full corporate
                                         name and have a duly authorized officer
                                         sign,  stating title. If a partnership,
                                         please  sign  in  partnership  name  by
                                         authorized    person.   If   stock   is
                                         registered  in two names,  both  should
                                         sign.

<PAGE>

                              POSITRON CORPORATION
                     PROXY SOLICITED BY BOARD OF DIRECTORS
             FOR ANNUAL MEETING OF SHAREHOLDERS - DECEMBER 17, 1999


S.  Lewis  Meyer or Gary H.  Brooks,  or either of them,  each with the power of
substitution and revocation,  are hereby authorized to represent the undersigned
with all powers which the undersigned  would possess if personally  present,  to
vote the securities of the  undersigned at the annual meeting of shareholders of
POSITRON CORPORATION to be held at the Company's headquarters offices located at
1304 Langham Creek Drive,  Suite 300,  Houston,  Texas 77084 at 10:00 a.m. local
time on Friday,  December 17, 1999, and at any  postponements or adjournments of
that meeting as set forth below,  and in their  discretion to act upon any other
business  that may  properly  come before the  meeting.

THE BOARD OF  DIRECTORS  RECOMMENDS  AN  AFFIRMATIVE  VOTE FOR THE  NOMINEES FOR
DIRECTOR LISTED BELOW:

1. To elect directors to hold office until the 2000 annual meeting of
shareholders or until their successors are elected.

     [ ]  FOR all nominees listed below   [ ]  WITHHOLD AUTHORITY
     (except as marked below)              to vote for all nominees listed below

     Nominees:  S. Lewis Meyer, Gary H. Brooks,  Gary B. Wood, Antonio P. Falcao

To withhold authority to vote for any nominee, write that nominee's name below:

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

THE BOARD OF DIRECTORS RECOMMENDS AN AFFIRMATIVE VOTE FOR PROPOSAL TWO BELOW:

2. To approve the 1999 Stock Option Plan and the authorization of 4,000,000
common shares issuable pursuant to that Plan.

           [ ]  FOR        [ ]  AGAINST           [ ]  ABSTAIN

THE BOARD OF DIRECTORS RECOMMENDS AN AFFIRMATIVE VOTE FOR PROPOSAL THREE BELOW:

3. To approve the 1999 Non-Employee Directors' Stock Option Plan and the
authorization of 500,000 common shares issuable pursuant to that Plan.

           [ ]  FOR        [ ]  AGAINST           [ ]  ABSTAIN

THE BOARD OF DIRECTORS RECOMMENDS AN AFFIRMATIVE VOTE FOR PROPOSAL FOUR BELOW:

4. To approve the 1999 Stock Bonus Incentive Plan and authorization of 1,000,000
common shares issuable pursuant to that Plan.

           [ ]  FOR        [ ]  AGAINST           [ ]  ABSTAIN

THE BOARD OF DIRECTORS RECOMMENDS AN AFFIRMATIVE VOTE FOR PROPOSAL FIVE BELOW:

5. To approve the 1999 Employee Stock Purchase Plan and the authorization of
500,000 common shares issuable pursuant to that Plan.

           [ ]  FOR        [ ]  AGAINST           [ ]  ABSTAIN

6. To ratify the appointment of Ham, Langston & Brezina as the Company's
independent auditors for the fiscal year ended December 31, 1998.

           [ ]  FOR        [ ]  AGAINST           [ ]  ABSTAIN



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