INCENTIVE  STOCK OPTION  AGREEMENT,  made as of the 21st day of July,  1995
between Primedex Health Systems,  Inc. (the "Company") and Steven R. Hirschtick,
an employee of the Company (the "Optionee").

     NOW, THEREFORE, the Company and the Optionee by his acceptance of the grant
of this Incentive Stock option ("ISO") agree as follows:

     1.  Grant of Option.

     The Company  hereby  grants to the  Optionee as a separate  inducement  and
agreement in  connection  with his  employment by the Company and not in lieu of
any salary or other  remuneration for services,  an ISO to purchase on the terms
and  conditions  hereinafter  set forth and  subject  to the  provisions  of the
Company's  Incentive  Stock  Option  Plan  (the  "Plan"),   the  provisions  and
definitions of which are hereby  incorporated  by reference  herein,  all or any
part of an  aggregate of 400,000  shares of Common Stock of the Company  (either
unissued or treasury), $.01 par value (the "Shares" or the "Common Stock").

     2.  Term of Option.

     The ISO granted hereunder shall,  notwithstanding  anything to the contrary
contained  herein  or in the  Plan,  expire  no later  than  July 21,  2000 (the
"Termination Date").

     3.  Termination of Employment.

     Upon  termination  of  employment  of the Optionee with the Company and all
subsidiary  corporations and parent corporations,  any ISO previously granted to
the Optionee  shall,  to the extent not  theretofore  exercised,  terminate  and
become null and void, except that:

     (a) if the Optionee shall die, or become totally and  permanently  disabled
(as  described in Section  105(d)(4) of the  Internal  Revenue Code of 1986,  as
amended from time to time-the "Code"), while in the employ of the Company or any
such corporation at a time when the Optionee was entitled to exercise the ISO as
herein provided,  in case of death the legal representative of the Optionee,  or
such person who acquired the ISO by bequest or inheritance or by reason of death
of the Optionee,  or in the case of total and permanent disability the Optionee,
may,  not later than one (1) year from the date of death or total and  permanent
disability,  exercise  the ISO in respect  of any or all of the total  number of
shares of Common  Stock as shall  have been  subject to the ISO and as shall not
have been previously purchased by the Optionee; and

     (b) if the  employment  of the  Optionee  to whom such ISO shall  have been
granted shall  terminate by reason of the Optionee's  retirement (at such age or
upon such  conditions  as shall be specified by the Committee or by the Board of
Directors) or dismissal by the Company other than for cause (as defined  below),
and while the Optionee is entitled to exercise the ISO as herein  provided,  the
Optionee  shall have the right to  exercise  the ISO granted  hereunder,  to the
extent of the  number of shares of Common  Stock  subject  to the ISO which were
purchasable by him at the date of termination of his employment,  at any time up
to and  including  three  (3)  months  after  the  date of such  termination  of
employment.

     If the Optionee voluntarily terminates his employment, or is discharged for
cause, the ISO granted  hereunder shall forthwith  terminate with respect to any
unexercised portion thereof.

     If the ISO granted hereunder shall be exercised by the legal representative
of a deceased  optionee or former Optionee,  or by a person who acquired the ISO
granted  hereunder  by bequest or  inheritance  or by reason of the death of the
Optionee,  written  notice of such exercise  shall be accompanied by a certified
copy of  letters  testamentary  or  equivalent  proof of the right of such legal
representative or other person to exercise the ISO.










     For the purpose of this Agreement, "for cause" shall mean, as determined by
the Committee or the Board of Directors; (a) Optionee's conviction of, or a plea
of nolo contendere or its equivalent  with respect to, a felony  involving fraud
or dishonesty or any other crime for which a term of  imprisonment  in excess of
one (1) year could be imposed;  or (b) Optionee's  material breach of any of the
terms or conditions of an  Employment  Agreement in effect  between the Optionee
and the Company or a subsidiary corporation or parent corporation of the Company
which  material  breach is not cured  within  ninety (90) days after  receipt of
written notice from such employee corporation to the Optionee.

     For the purpose of this  Agreement,  an  employment  relationship  shall be
deemed to exist between an individual  and a corporation  if, at the time of the
determination, the individual was an "employee" of such corporation for purposes
of Section  422(a) of the Code.  If an individual is on a leave of absence taken
with the consent of the corporation by which such individual was employed, or is
on active military  service,  and is determined to be an "employee" for purposes
of the exercise of the ISO,  the Optionee  shall not be entitled to exercise the
ISO during  such  period  and while the  employment  relationship  is treated as
continuing  intact  unless the Optionee  shall have  obtained the prior  written
consent of such  corporation,  which  consent shall be signed by the Chairman of
the Board,  the  President,  a senior  vice-president  or other duly  authorized
officer of such corporation.

     A termination  of employment  shall not be deemed to occur by reason of (i)
the transfer of the Optionee  from  employment by the Company to employment by a
subsidiary  corporation  or a  parent  corporation  of the  Company  or (ii) the
transfer of the Optionee from employment by a subsidiary corporation or a parent
corporation of the Company to employment by the Company or by another subsidiary
corporation or parent corporation of the Company.

     4. Term of ISO; Limitations on the Right of Exercise.

     The  Optionee  may  exercise  the ISO in full for the  aggregate  number of
shares  of  Common  Stock  subject  to the ISO,  but  only  after he has been an
employee  of  the  Company  including  any  subsidiary  corporation  and  parent
corporation  of the Company  (during the time such  entity was a  subsidiary  or
parent of the  Company)  for a period  of at least  one (1) year  (the  "minimum
employment").

     The ISO granted hereunder shall be exercisable  during a period of five (5)
years from the date of grant of the ISO.

     To  the  extent  that  the  ISO is  not  exercised  within  the  period  of
exercisability specified above, it shall expire as to the then unexercised part.
If the ISO granted  hereunder shall terminate prior to the Termination Date, the
Committee or the Board of Directors shall have the right to use the Common Stock
as to which  such  ISO  shall  not  have  been  exercised  to grant  one or more
additional ISO's to any eligible employee under the Plan.

     In no event shall the ISO granted  hereunder be exercised for a fraction of
a share.

     5.  Nontransferability.

     The ISO granted hereunder shall not be transferable  otherwise than by will
or the laws of descent and distribution,  arid shall be exercisable,  during the
lifetime of the holder,  only by such holder,  or, if the holder is incompetent,
then  by a  committee  of  his  person  and  property  or  by  his  other  legal
representative who has been judicially appointed as such.

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     6.  Purchase Price and Payment.

     (a) The price  for each  share of Common  Stock  purchasable  under the ISO
granted hereunder shall be $.125.

     The  Company  shall  cause stock  certificates  representing  tie shares of
Common Stock  purchased  under the ISO granted  hereby to be issued only when it
shall have  received the full  purchase  price for the Common Stock in cash,  by
certified check or bank draft.

     Upon the  exercise of the ISO  granted  hereunder  and upon  payment of the
purchase price therefor,  a certificate or certificates for the shares of Common
Stock as to which the ISO has been  exercised  shall be issued by the Company in
the name of the person  exercising the ISO and shall be delivered to or upon the
order of such person or persons.

     The Company may endorse  such legend or legends  upon the  certificates  of
shares of Common Stock issued upon  exercise of the ISO granted  hereunder,  and
the  Committee  or the  Board  of  Directors  may  issue  such  "stop  transfer"
instructions to its transfer agent in respect of such shares of Common Stock, as
the Committee or the Board of  Directors,  in its  discretion,  determines to be
necessary  or  appropriate  (i) to  prevent a  violation  of, or to  perfect  an
exemption from, the registration  requirements of the Securities Act, or (ii) to
implement the  provisions of any agreement  between the Company and the Optionee
with respect to such shares of Common Stock.

     The  Company  shall pay all issue or  transfer  taxes  with  respect to the
issuance  or  transfer  of the shares of Common  Stock,  as well as all fees and
expenses necessarily incurred by the Company in connection with such issuance or
transfer,  except fees and expenses which may be  necessitated  by the filing or
amending of a Registration  Statement  under the  Securities Act of 1933,  which
fees and expenses  shall be borne by the recipient of the shares of Common Stock
unless  such  Registration  Statement  has been filed by the Company for its own
corporate  purposes  (and the Company so states) in which event the recipient of
the  shares of Common  Stock  shall  bear  only  such fees and  expenses  as are
attributable  solely to the  inclusion  of such  shares  of Common  Stock in the
Registration Statement.

     Anything to the  contrary  herein  contained  notwithstanding,  the Company
agrees on an annual  basis  commencing  at such  time as its  audited  financial
statements  are  available  for the fiscal year ending  October 31, 1995, at its
sole expense, to file a Registration  Statement on Form S-8 under the Securities
Act of 1933  with  the  Securities  and  Exchange  Commission  and to  file  any
necessary  amendments  thereto  through  July  21,  2000 and  while  this ISO is
outstanding  in whole or in part or any of the shares of Common Stock  purchased
upon  exercise  thereof  are  beneficially  owned  by the  Optionee  and may not
otherwise be sold publicly  (including  sales  pursuant to Rule 144), and to use
its best efforts to obtain  effectiveness  thereof so as to permit  public offer
and sale of the shares of Common Stock underlying this ISO.

     All shares of Common  Stock  issued as provided  herein shall be fully paid
and non-assessable to the extent permitted by law.

     (b)  Anti-Dilution.  The  ISO  granted  pursuant  to this  agreement  shall
continue  notwithstanding  any change or exchange of the shares of Common  Stock
into or for a different number and/or kind of common shares of the Company or of
a corporation  or other entity which  succeeds to the business of the Company or
becomes its parent or subsidiary, whether or not such change or exchange results
from a  recapitalization,  stock  split,  split-up,  split-off,  combination  of
shares, exchange of shares,  issuance of rights to subscribe,  change in capital
structure, reorganization,  corporate merger, consolidation or separation, stock
dividends or liquidation,  provided however, that the ISO, if still outstanding,
shall  terminate  if and when the  business  conducted  by the  Company  (or any
successor  to the Company) is  substantially  terminated  or dissolved  upon its
liquidation. In the event of such a change or exchange, an

                                        3








appropriate adjustment shall be made in the number and/or kind of shares subject
to option and/or in their  per-share  option  price,  and that in the event of a
transaction to which Section  424(a) of the Internal  Revenue Code (or successor
provision of law) is applicable,  the foregoing shall be accomplished thereunder
by  assumption  of the ISO or by the  substitution  of another  incentive  stock
option.  In no case shall the making of any change,  exchange,  substitution  or
assumption or related adjustment give the Optionee  additional benefits which he
did not have under the old option,  and the excess of the aggregate  fair market
value of the shares  subject to the Option  immediately  after any such  change,
exchange,  substitution  and/or adjustment shall not be greater than such excess
of the fair  market  value of the Common  Stock  subject to the ISO  immediately
before. Adjustment of the number of shares subject to the ISO shall not make the
ISO become  exercisable  as to a  fractional  share.  Subject  to the  foregoing
limitations,  the  terms  of any such  adjustment  shall  be  determined  by the
Committee or the Board of Directors  and such  determination  made in good faith
shall be  final,  provided  that if  pursuant  to said  Section  424(a)  another
corporation or other  successor  assumes the ISO or substitutes  another option,
its determination of the terms made in good faith shall be final.

     7.  Method of-Exercise.

     The ISO shall be  exercisable  only by  delivery  of written  notice to the
Secretary of the Company at the  Company's  offices in Los Angeles,  California,
prior to the  expiration  of the ISO as specified in  paragraphs 2 and 3 hereof.
Such notice  shall state the  election  to exercise  the ISO,  and the number of
Shares in  respect  of which it is being  exercised,  and shall be signed by the
person or persons so exercising such ISO. The date the Company  receives written
notice  shall be the  exercise  date.  In the event  the ISO shall be  exercised
pursuant to the  provisions  of paragraph 3 hereof by a person or persons  other
than the Optionee, such notice shall be accompanied by proof satisfactory to the
Company of the right of such person or persons to exercise  the ISO. The Company
shall  issue and  deliver,  upon  receipt of notice  and  payment in full of the
purchase  price  for the  Shares  as to  which  the ISO is  being  exercised,  a
certificate  or  certificates  representing  such  number of shares to which the
Optionee is entitled to receive under the Plan.

     8.  Miscellaneous.

     (a) The Optionee  shall not sell,  assign,  transfer,  pledge,  encumber or
otherwise  dispose of this ISO. This ISO shall only be transferable  pursuant to
the laws of descent and  distribution and therefore may only be exercised by the
Optionee, or in the event of his death, by his executor, administrator, personal
representative, heirs or legatees.

     (b) Any notice  given  pursuant to this  Agreement by the Company or by the
Optionee  shall be in  writing  and shall be  deemed to have been duly  given if
delivered by hand or by telecopy,  or mailed by  certified or  registered  mail,
return receipt requested:

     If to the Company

     Primedex Health Systems, Inc.
     1516 Cotner Avenue
     Los Angeles, California 90025
     Attention:  President

     If to the Optionee

     Steven R. Hirschtick
     6301 Vista del Mar
     Playa del Rey, California 90293

or to such other  address as either  party shall  designate  by written  notice,
similarly given, to the other party.


                                        4








     (c)  Subject to the  restrictions  on  transfer  included  herein,  all the
covenants and  provisions of this Agreement by or for the benefit of the Company
or the  Optionee  shall  bind and  inure  to the  benefit  of  their  respective
successors and assigns hereunder.

     (d) The  Company  will not  merge  or  consolidate  with or into,  or sell,
transfer  or lease  all or  substantially  all of its  property  to,  any  other
corporation unless the successor,  transferee or lessee corporation, as the case
may be (if  not the  Company),  shall  expressly  assume  the  due and  punctual
performance  and  observance  of each and every  covenant and  condition of this
Agreement to be performed and observed by the Company.

     (e) All statements contained in any schedule, exhibit, certificate or other
instrument  delivered by or on behalf of the parties  hereto,  or in  connection
with the  transactions  contemplated  by this  Agreement,  shall be deemed to be
representations  and warranties  hereunder.  Notwithstanding  any investigations
made by or on behalf of the  parties  to this  Agreement,  all  representations,
warranties  and  agreements  made by the parties to this  Agreement  or pursuant
hereto shall  survive,  except that, if a party hereto has or, with the exercise
of due care would have, actual knowledge at the date hereof of facts which would
constitute a breach of the representations and warranties contained herein, such
breaches  shall be deemed  waived by such  party if such party  consummates  the
transactions contemplated by this Agreement.

     (f) This Agreement  shall be deemed to be a contract made under the laws of
the State of New York and for all purposes shall be construed in accordance with
the internal laws of said State.

     (g) Nothing  contained in this Agreement  shall be construed to give to any
person or  corporation  other than the  Company  and the  Optionee  any legal or
equitable right, remedy or claim under this Agreement,  and this Agreement shall
be for the sole and exclusive benefit of the Company and the Optionee.

     (h) Each of the  parties  acknowledges  and agrees that in the event of any
breach of this Agreement by it, the other party would be irreparably  harmed and
could not be made whole by monetary damages.  Each party  accordingly  agrees to
waive the defense in any action for  specific  performance  that a remedy at law
would be adequate and that the other  party,  in addition to any other remedy to
which it may be  entitled  at law or in  equity,  shall be  entitled  to  compel
specific  performance of this  Agreement in any action  instituted in the United
States District Court for the Central  District of California,  or, in the event
said Court  would not have  jurisdiction  for such  action,  in any court of the
United States or any state thereof having subject matter  jurisdiction  for such
action. Each party consents to personal  jurisdiction in any such action brought
in the United States  District  Court for the Central  District of California to
service of process upon it in the manner set forth in Section 8(b) hereof.


     IN WITNESS  WHEREOF,  the parties  have caused  this  Agreement  to be duly
executed, all as of the date and year first above written.

                                       PRIMEDEX HEALTH SYSTEMS, INC.


                                       By:  /s/ Howard Berger, M.D.
                              Howard Berger, M.D.,
                             Chief Financial Officer


                            /s/ Steven R. Hirschtick
                        Steven R. Hirschtick ("Optionee")