PHOTOGEN TECHNOLOGIES INC
SC 13D, 1998-02-25
NON-OPERATING ESTABLISHMENTS
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<PAGE>

                INFORMATION REQUIREMENTS FOR FILINGS UPON ACQUISITION
               OF FIVE PERCENT OF A CLASS OF EQUITY SECURITIES SUBJECT
                    TO THE REPORTING REQUIREMENTS OF THE 1934 ACT

                                     SCHEDULE 13D

                      UNDER THE SECURITIES EXCHANGE ACT OF 1934
                               (AMENDMENT NO. ______)*


                           PHOTOGEN TECHNOLOGIES, INC.
                                   (Name of Issuer)
                                           
                                     COMMON STOCK   
                          (Title of Class of Securities)
                                           
                                    71932A-10-1   
                                  (CUSIP Number)

                                     John Smolik
                          c/o Photogen Technologies, Inc., 
            7327 OAK RIDGE HIGHWAY, SUITE B, KNOXVILLE, TN 37931 (423/769-4012)
   (Name, Address and Telephone Number of Person Authorized to Receive 
                          Notices and Communications)
                                           
                               FEBRUARY 25, 1998 
             (Date of Event Which Requires Filing of this Statement)


     If the person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box / /.

     NOTE:  Six copies of this statement, including all exhibits, should be
filed with the Commission.  See Rule 13d-1(a) for other parties to whom copies
are to be sent.


   * The remainder of this cover page      The information required on the 
shall be filled out for a reporting        remainder of this cover page shall
person's initial filing on this form       not be deemed to be "filed" for the
with respect to the subject class of       purpose of Section 18 of the
securities, and for any subsequent         Securities Exchange Act of 1934
amendment containing information           ("Act") or otherwise subject to the
which would alter disclosures              liabilities of that section of the
provided in a prior cover page.            Act but shall be subject to all other
                                           provisions of the Act (however, see
                                           the Notes).

<PAGE>

                               CUSIP No. 71932A-10-1
      
_______________________________________________________________________________
(1)  Names of Reporting Persons.             
     S.S. or I.R.S. Identification                     John A. Smolik
     Nos. of Above Persons
_______________________________________________________________________________
                                                                        
(2)  Check the Appropriate Box if a          (a)  X
     Member of a Group (See Instructions)       _______________________________
                                             (b)_______________________________

_______________________________________________________________________________
(3)  SEC Use Only
                                                               
_______________________________________________________________________________
(4)  Source of Funds (See Instructions)           00
_______________________________________________________________________________
                                                                        
(5)  Check if Disclosure of Legal Proceedings
     is Required Pursuant to Items 2(d) or 2(e)
_______________________________________________________________________________
                                                                        
(6)  Citizenship or Place of Organization              United States
_______________________________________________________________________________
                                                                        

Number of Shares Beneficially       (7)  Sole Voting Power   4,800,000(A)
Owned by Each Reporting Person      __________________________________________
With                                (8)  Shared Voting Power      0(A)
                                    __________________________________________
                                     
                                    (9)  Sole Dispositive Power    4,800,000
                                    __________________________________________
                                     
                                    (10)  Shared Dispositive Power     0
                                    __________________________________________
                                                                        
_______________________________________________________________________________
(11) Aggregate Amount Beneficially Owned 
     By Each Reporting Person                4,800,000(A)
_______________________________________________________________________________
                                                                        
(12) Check if the Aggregate Amount in Row (11)
     Excludes Certain Shares (See Instructions)        [X](A)
_______________________________________________________________________________
                                                                        
(13) Percent of Class Represented by Amount
     in Row (11)                             13.3%
_______________________________________________________________________________
                                                                        
(14) Type of Reporting Person (See Instructions)       IN
_______________________________________________________________________________
                                                                        


______________________________                      
     (A) Excludes an aggregate of 29,894,878 shares owned beneficially by the
other reporting persons indicated in this Schedule 13D, as to which this
reporting person disclaims beneficial ownership.  See description of Voting
Agreement in Item 4, below.

                                      -2-
<PAGE>

                                CUSIP No. 71932A-10-1
_______________________________________________________________________________
                                                                        
(1)  Names of Reporting Persons.             
     S.S. or I.R.S. Identification                     Eric A. Wachter, Ph.D.
     Nos. of Above Persons
_______________________________________________________________________________
                                                                        
(2)  Check the Appropriate Box if a          (a)  X
                                             ________________________________
     Member of a Group (See Instructions)    (b) 
                                             ________________________________
                                                               
_______________________________________________________________________________
(3)  SEC Use Only
                                
_______________________________________________________________________________
(4)  Source of Funds (See Instructions)           00
                                                             
_______________________________________________________________________________
(5)  Check if Disclosure of Legal Proceedings
     is Required Pursuant to Items 2(d) or 2(e)
                                         
_______________________________________________________________________________
(6)  Citizenship or Place of Organization              United States
                                            
_______________________________________________________________________________

Number of Shares Beneficially      (7)  Sole Voting Power        4,800,000(A) 
Owned by Each Reporting Person     ___________________________________________
With                               (8)  Shared Voting Power      0(A)
                                   ___________________________________________
                                   (9)  Sole Dispositive Power   4,800,000
                                   __________________________________________

                                   (10) Shared Dispositive Power 0
                                           
_______________________________________________________________________________
(11) Aggregate Amount Beneficially Owned 
     By Each Reporting Person                4,800,000(A)
                                                                    
_______________________________________________________________________________
(12) Check if the Aggregate Amount in Row (11)
     Excludes Certain Shares (See Instructions)        [X](A)
                                                                     
_______________________________________________________________________________
(13) Percent of Class Represented by Amount
     in Row (11)                             13.3%
                                                              
_______________________________________________________________________________
(14) Type of Reporting Person (See Instructions)       IN
                                                           
_______________________________________________________________________________


____________________________                          
     (A) Excludes an aggregate of 29,894,878 shares owned beneficially by the
other reporting persons indicated in this Schedule 13D, as to which this
reporting person disclaims beneficial ownership.  See description of Voting
Agreement in Item 4, below.

                                      -3-

<PAGE>
                                CUSIP No. 71932A-10-1
_______________________________________________________________________________
                                                                        
(1)  Names of Reporting Persons.             
     S.S. or I.R.S. Identification                     Craig Dees, Ph.D.
     Nos. of Above Persons
_______________________________________________________________________________
                                                                        
(2)  Check the Appropriate Box if a          (a)  X
                                             ________________________________
     Member of a Group (See Instructions)    (b) 
                                             ________________________________
                                               
_______________________________________________________________________________
(3)  SEC Use Only
_______________________________________________________________________________
                                                   
(4)  Source of Funds (See Instructions)           00
_______________________________________________________________________________
                                                                        
(5)  Check if Disclosure of Legal Proceedings
     is Required Pursuant to Items 2(d) or 2(e)
_______________________________________________________________________________
                                                                        
(6)  Citizenship or Place of Organization              United States
_______________________________________________________________________________
                                                                        
Number of Shares Beneficially        (7)  Sole Voting Power         4,800,000(A)
Owned by Each Reporting Person       __________________________________________
With                                 (8)  Shared Voting Power       0(A)
                                     __________________________________________
                                     (9)  Sole Dispositive Power    4,800,000
                                     __________________________________________
                                     (10) Shared Dispositive Power  0
                                                         
_______________________________________________________________________________
(11) Aggregate Amount Beneficially Owned 
     By Each Reporting Person                4,800,000(A)
                                                                  
_______________________________________________________________________________
(12) Check if the Aggregate Amount in Row (11)
     Excludes Certain Shares (See Instructions)        [X](A)
_______________________________________________________________________________
(13) Percent of Class Represented by Amount
     in Row (11)                             13.3%
_______________________________________________________________________________
                                                                        
(14) Type of Reporting Person (See Instructions)       IN
_______________________________________________________________________________
                                                                        


___________________________                             
     (A) Excludes an aggregate of 29,894,878 shares owned beneficially by the
other reporting persons indicated in this Schedule 13D, as to which this
reporting person disclaims beneficial ownership.  See description of Voting
Agreement in Item 4, below.

                                        -4-

<PAGE>

                                CUSIP No. 71932A-10-1
_______________________________________________________________________________
                                                                        
(1)  Names of Reporting Persons.             
     S.S. or I.R.S. Identification               Walter G. Fisher, Ph.D.
     Nos. of Above Persons
_______________________________________________________________________________
                                                                        
(2)  Check the Appropriate Box if a          (a)  X
                                             ________________________________
     Member of a Group (See Instructions)    (b) 
                                             ________________________________
_______________________________________________________________________________
                                                                        
(3)  SEC Use Only
_______________________________________________________________________________
                                                                        
(4)  Source of Funds (See Instructions)           00
_______________________________________________________________________________
                                                                        
(5)  Check if Disclosure of Legal Proceedings
     is Required Pursuant to Items 2(d) or 2(e)
_______________________________________________________________________________
                                                                        
(6)  Citizenship or Place of Organization              United States
_______________________________________________________________________________
                                                                        

Number of Shares Beneficially           (7)  Sole Voting Power    4,800,000(A) 
Owned by Each Reporting Person          ______________________________________
With                                    (8)  Shared Voting Power      0(A)
                                             _________________________________
                                        (9)  Sole Dispositive Power  4,800,000
                                             _________________________________
                                        (10)  Shared Dispositive Power     0
                                             
_______________________________________________________________________________
(11) Aggregate Amount Beneficially Owned 
     By Each Reporting Person                4,800,000(A)
                                                                
_______________________________________________________________________________
(12) Check if the Aggregate Amount in Row (11)
     Excludes Certain Shares (See Instructions)        [X](A)
_______________________________________________________________________________
                                                                        
(13) Percent of Class Represented by Amount
     in Row (11)                             13.3%
_______________________________________________________________________________
                                                                        
(14) Type of Reporting Person (See Instructions)       IN
_______________________________________________________________________________


_______________________________________________________________________________



_____________________________
     (A) Excludes an aggregate of 29,894,878 shares owned beneficially by the
other reporting persons indicated in this Schedule 13D, as to which this
reporting person disclaims beneficial ownership.  See description of Voting
Agreement in Item 4, below.

                                 -5-

<PAGE>
                                CUSIP No. 71932A-10-1
_______________________________________________________________________________
                                                                        
(1)  Names of Reporting Persons.             
     S.S. or I.R.S. Identification                     Timothy Scott, Ph.D.
     Nos. of Above Persons
_______________________________________________________________________________
                                                                        
(2)  Check the Appropriate Box if a          (a) X
                                             ________________________________
     Member of a Group (See Instructions)    (b) 
                                             ________________________________
_______________________________________________________________________________
                                                                        
(3)  SEC Use Only
_______________________________________________________________________________
                                                                        
(4)  Source of Funds (See Instructions)           00
_______________________________________________________________________________
                                                                        
(5)  Check if Disclosure of Legal Proceedings
     is Required Pursuant to Items 2(d) or 2(e)
_______________________________________________________________________________
                                                                        
(6)  Citizenship or Place of Organization              United States
_______________________________________________________________________________
                                                                        
Number of Shares Beneficially          (7)  Sole Voting Power   4,800,000(A) 
Owned by Each Reporting Person         _____________________________________
With                                   (8)  Shared Voting Power      0(A)
                                       _____________________________________
                                       (9)  Sole Dispositive Power  4,800,000
                                       _______________________________________
                                       (10)  Shared Dispositive Power     0
                                       _______________________________________
                                                                        
_______________________________________________________________________________
(11) Aggregate Amount Beneficially Owned 
     By Each Reporting Person                4,800,000(A)
_______________________________________________________________________________
                                                                        
(12) Check if the Aggregate Amount in Row (11)
     Excludes Certain Shares (See Instructions)        [X](A)
_______________________________________________________________________________
                                                                        
(13) Percent of Class Represented by Amount
     in Row (11)                                  13.3%
_______________________________________________________________________________
                                                                        
(14) Type of Reporting Person (See Instructions)       IN
_______________________________________________________________________________
                                                                        


______________________________
     (A) Excludes an aggregate of 29,894,878 shares owned beneficially by the
other reporting persons indicated in this Schedule 13D, as to which this
reporting person disclaims beneficial ownership.  See description of Voting
Agreement in Item 4, below.

                                      -6-

<PAGE>


                                CUSIP No. 71932A-10-1
_______________________________________________________________________________
                                                                        
(1)  Names of Reporting Persons.             
     S.S. or I.R.S. Identification                     Stuart P. Levine
     Nos. of Above Persons
_______________________________________________________________________________
                                                                        
(2)  Check the Appropriate Box if a          (a)  X
                                             ________________________________
     Member of a Group (See Instructions)    (b) 
                                             ________________________________
_______________________________________________________________________________
                                                                        
(3)  SEC Use Only
_______________________________________________________________________________
                                                                        
(4)  Source of Funds (See Instructions)           PF
_______________________________________________________________________________
                    
(5)  Check if Disclosure of Legal Proceedings
     is Required Pursuant to Items 2(d) or 2(e)
_______________________________________________________________________________
                                                                        
(6)  Citizenship or Place of Organization              United States
_______________________________________________________________________________
                                                                        
Number of Shares Beneficially     (7)  Sole Voting Power   3,426,921(A), (B)
Owned by Each Reporting Person    ___________________________________________
With                              (8)  Shared Voting Power      0(A)
                                  ___________________________________________
                                  (9)  Sole Dispositive Power 3,426,921(B)
                                  ____________________________________________
                                  (10)  Shared Dispositive Power     0
                                                              
_______________________________________________________________________________
(11) Aggregate Amount Beneficially Owned 
     By Each Reporting Person                3,426,921(A), (B)
_______________________________________________________________________________
                                                                        
(12) Check if the Aggregate Amount in Row (11)
     Excludes Certain Shares (See Instructions)        [X](A)
_______________________________________________________________________________
                                                                        
(13) Percent of Class Represented by Amount
     in Row (11)                             9.52%
_______________________________________________________________________________
(14) Type of Reporting Person (See Instructions)       IN
_______________________________________________________________________________
                                                                        


______________________________
     (A) Excludes an aggregate of 31,267,957 shares owned beneficially by the
other reporting persons indicated in this Schedule 13D, as to which this
reporting person disclaims beneficial ownership.  See description of Voting
Agreement in Item 4, below.

     (B) Includes 1,000,000 shares owned by SL Investment Enterprises, LP (a
Georgia limited partnership), a family partnership controlled by the reporting
person.

                                     -7-

<PAGE>
                                CUSIP No. 71932A-10-1
_______________________________________________________________________________
                                                                        
(1)  Names of Reporting Persons.             
     S.S. or I.R.S. Identification                     Theodore Tannebaum
     Nos. of Above Persons
_______________________________________________________________________________
                                                                        
(2)  Check the Appropriate Box if a          (a)  X
                                             ________________________________
     Member of a Group (See Instructions)    (b) 
                                             ________________________________
_______________________________________________________________________________
                                                                        
(3)  SEC Use Only
_______________________________________________________________________________
                                                                        
(4)  Source of Funds (See Instructions)           PF
_______________________________________________________________________________
                                                                        
(5)  Check if Disclosure of Legal Proceedings
     is Required Pursuant to Items 2(d) or 2(e)
_______________________________________________________________________________
(6)  Citizenship or Place of Organization              United States
_______________________________________________________________________________

Number of Shares Beneficially     (7)  Sole Voting Power   3,450,421(A), (B)
Owned by Each Reporting Person    ___________________________________________
With                              (8)  Shared Voting Power      0(A)
                                  ___________________________________________
                                     
                                  (9)  Sole Dispositive Power        1,950,421
                                  ____________________________________________
                                     
                                  (10)  Shared Dispositive Power     0
_______________________________________________________________________________
                                                                               
(11) Aggregate Amount Beneficially Owned 
     By Each Reporting Person                3,450,421(A), (B)
_______________________________________________________________________________

(12) Check if the Aggregate Amount in Row (11)
     Excludes Certain Shares (See Instructions)        [X](A)
_______________________________________________________________________________

(13) Percent of Class Represented by Amount
     in Row (11)                             9.58%
_______________________________________________________________________________
                                                                    
(14) Type of Reporting Person (See Instructions)       IN
_______________________________________________________________________________
                                                        
                                                                        

______________________________      

     (A) Excludes an aggregate of 31,244,457 shares owned beneficially by the 
other reporting persons indicated in this Schedule 13D, as to which this 
reporting person disclaims beneficial ownership.  See description of Voting 
Agreement in Item 4, below.

     (B) Reporting person retains voting rights on an aggregate of 1,500,000 
shares owned by Lizette D. Greco, Harley J. Tannebaum, Jonne Ana Tannebaum, 
and Kathleen A. Beauchamp.

                                    -8-

<PAGE>

                                CUSIP No. 71932A-10-1
_______________________________________________________________________________
(1)  Names of Reporting Persons.             
     S.S. or I.R.S. Identification      Robert J. Weinstein, M.D. and
     Nos. of Above Persons              Lois Weinstein (joint tenants)
_______________________________________________________________________________
(2)  Check the Appropriate Box if a          (a) X
                                             ________________________________
     Member of a Group (See Instructions)    (b) 
                                             ________________________________
_______________________________________________________________________________
(3)  SEC Use Only

_______________________________________________________________________________
(4)  Source of Funds (See Instructions)           PF
_______________________________________________________________________________
                                                                        
(5)  Check if Disclosure of Legal Proceedings
     is Required Pursuant to Items 2(d) or 2(e)
_______________________________________________________________________________
                                                                        
(6)  Citizenship or Place of Organization              United States
_______________________________________________________________________________
                                                                    
Number of Shares Beneficially       (7)  Sole Voting Power  3,455,421(A), (B) 
Owned by Each Reporting Person      _________________________________________
With                                (8)  Shared Voting Power      0(A)
                                    _________________________________________
                                    (9)  Sole Dispositive Power  3,455,421(B)
                                    ________________________________________
                                    (10)  Shared Dispositive Power     0
_______________________________________________________________________________
(11) Aggregate Amount Beneficially Owned 
     By Each Reporting Person                3,455,421(A), (B)

_______________________________________________________________________________
(12) Check if the Aggregate Amount in Row (11)
     Excludes Certain Shares (See Instructions)        [X](A)
_______________________________________________________________________________
                                                                       
(13) Percent of Class Represented by Amount
     in Row (11)                             9.6%
_______________________________________________________________________________
                                                                        
(14) Type of Reporting Person (See Instructions)       IN
_______________________________________________________________________________
                                                                        


___________________________
     (A) Excludes an aggregate of 31,239,457 shares owned beneficially by the
other reporting persons indicated in this Schedule 13D, as to which this
reporting person disclaims beneficial ownership.  See description of Voting
Agreement in Item 4, below.

     (B) Includes 1,400,000 shares owned by W.F. Investments Enterprises,
Limited Partnership (a Georgia limited partnership), a family partnership
jointly controlled by the reporting persons.

                                         -9-

<PAGE>

                                CUSIP No. 71932A-10-1
_______________________________________________________________________________
                                                                        
(1)  Names of Reporting Persons.             
     S.S. or I.R.S. Identification                     Thomas B. Rosenberg
     Nos. of Above Persons                   
_______________________________________________________________________________
(2)  Check the Appropriate Box if a          (a) X
                                             ________________________________
     Member of a Group (See Instructions)    (b) 
                                              ________________________________
_______________________________________________________________________________
(3)  SEC Use Only
_______________________________________________________________________________
(4)  Source of Funds (See Instructions)           PF
_______________________________________________________________________________
(5)  Check if Disclosure of Legal Proceedings
     is Required Pursuant to Items 2(d) or 2(e)
_______________________________________________________________________________
(6)  Citizenship or Place of Organization              United States
_______________________________________________________________________________

Number of Shares Beneficially        (7)  Sole Voting Power    362,115(A)
Owned by Each Reporting Person       ________________________________________
With                                 (8)  Shared Voting Power      0(A)
                                     ________________________________________
                                     (9)  Sole Dispositive Power   362,115
                                     ________________________________________
                                     (10)  Shared Dispositive Power     0
                                                       
______________________________________________________________________________
(11) Aggregate Amount Beneficially Owned 
     By Each Reporting Person                362,115(A)
_______________________________________________________________________________
(12) Check if the Aggregate Amount in Row (11)
     Excludes Certain Shares (See Instructions)        [X](A)
_______________________________________________________________________________
(13) Percent of Class Represented by Amount
     in Row (11)                             1%
_______________________________________________________________________________
(14) Type of Reporting Person (See Instructions)       IN
_______________________________________________________________________________


_________________________________                             
     (A) Excludes an aggregate of 34,332,763 shares owned beneficially by the
other reporting persons indicated in this Schedule 13D, as to which this
reporting person disclaims beneficial ownership.  See description of Voting
Agreement in Item 4, below.

                                      -10-

<PAGE>

Item 1.  SECURITY AND ISSUER.

     The title of the class of securities to which this Schedule 13D relates is
Common Stock ("Common Stock") of Photogen Technologies, Inc., a Nevada
corporation (the "Issuer").  The principal executive offices of the Issuer are
located at 7327 Oak Ridge Highway, Suite B, Knoxville, TN 37931.

Item 2.  IDENTITY AND BACKGROUND.

     Set forth below is the following information with respect to each of the
persons filing this Schedule 13D (together, the "Filing Persons") and, in
addition, each of such person's general partners, if applicable, and, if
applicable, the persons controlling such general partners (such additional
persons, together with the Filing Persons, the "Item 2 Persons"):  (a) name; (b)
address of principal offices (if entity) or residence or business address (if
individual); (c) principal business (if entity) or principal occupation and
name, business and address of employer (if individual); (d) information
concerning criminal convictions during the last five years; (e) information
concerning civil or administrative proceedings under state or federal securities
laws during the past five years with respect to any state or federal securities
laws and (f) citizenship (if individual) or jurisdiction of organization (if
entity).


I.

a)  John Smolik
b)  Photogen Technologies, Inc., 7327 Oak Ridge Highway, Suite B, Knoxville, TN
    37931
c)  Chairman of the Board, President, Chief Executive Officer and Chief 
    Financial Officer of Photogen Technologies, Inc., 7327 Oak Ridge Highway,
    Suite B, Knoxville, TN 37931
d)  No criminal convictions (1)
e)  No adverse civil judgments for violations of securities laws (1)
f)  United States


II.
a)  Eric A. Wachter, Ph.D.
b)  Photogen Technologies, Inc., 7327 Oak Ridge Highway, Suite B, Knoxville, TN
    37931
c)  Director and employee (research scientist) of Photogen Technologies, Inc., 
    7327 Oak Ridge Highway, Suite B, Knoxville, TN 37931
d)  No criminal convictions (1)
e)  No adverse civil judgments for violations of securities laws (1)
f)  United States


III.
a)  Craig Dees, Ph.D.

                                             -11-

<PAGE>

b)  Photogen Technologies, Inc., 7327 Oak Ridge Highway, Suite B, Knoxville, TN
    37931
c)  Director and employee (research scientist) of Photogen Technologies, Inc., 
    7327 Oak Ridge Highway, Suite B, Knoxville, TN 37931
d)  No criminal convictions (1)
e)  No adverse civil judgments for violations of securities laws (1)
f)  United States 


IV.
a)  Walter G. Fisher, Ph.D.
b)  Photogen Technologies, Inc., 7327 Oak Ridge Highway, Suite B, Knoxville, TN
    37931
c)  Director and employee (research scientist) of Photogen Technologies, Inc.,
    7327 Oak Ridge Highway, Suite B, Knoxville, TN 37931
d)  No criminal convictions (1)
e)  No adverse civil judgments for violations of securities laws (1)
f)  United States 


V.
a)  Timothy Scott, Ph.D.
b)  Photogen Technologies, Inc., 7327 Oak Ridge Highway, Suite B, Knoxville, TN
    37931
c)  Employee (research scientist) of Photogen Technologies, Inc., 7327 Oak Ridge
    Highway, Suite B, Knoxville, TN 37931
d)  No criminal convictions (1)
e)  No adverse civil judgments for violations of securities laws (1)
f)  United States


VI.
a)  Stuart P. Levine
b)  875 North Michigan Avenue, Suite 2930, Chicago, IL 60611
c)  Private investor, 875 North Michigan Avenue, Suite 2930, Chicago, IL 60611
d)  No criminal convictions (1)
e)  No adverse civil judgments for violations of securities laws (1)
f)  United States 


VII.
a)  Theodore Tannebaum
b)  875 North Michigan Avenue, Suite 2930, Chicago, IL 60611
c)  Private investor, 875 North Michigan Avenue, Suite 2930, Chicago, IL 60611
d)  No criminal convictions (1)
e)  No adverse civil judgments for violations of securities laws (1)

                                        -12-

<PAGE>

f)  United States 


VIII.
a)  Robert J. Weinstein, M.D.
b)  875 North Michigan Avenue, Suite 2930, Chicago, IL 60611
c)  Private investor, 875 North Michigan Avenue, Suite 2930, Chicago, IL 60611
d)  No criminal convictions (1)
e)  No adverse civil judgments for violations of securities laws (1)
f)  United States 


IX>
a)  Thomas B. Rosenberg
b)  Capital Associates Development Corp., 1201 North Clark Street, 
    Chicago, IL 60610
c)  Private investor, Capital Associates Development Corp., 1201 North Clark 
    Street, Chicago, IL 60610
d)  No criminal convictions (1)
e)  No adverse civil judgments for violations of securities laws (1)
f)  United States 

     (1)  During the last five years, no person listed above has been convicted
in a criminal proceeding (excluding traffic violations or similar misdemeanors),
nor has any such person been a party to a civil proceeding of a judicial or
administrative body of competent jurisdiction that resulted in such person
becoming subject to a judgment, decree or final order enjoining future
violations of, or prohibiting or mandating activities subject to, federal or
state securities laws or finding any violation with respect to such laws.

Item 3  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

     Mr. Tannebaum acquired 21,595,704 shares of Common Stock from the Issuer 
on October 7, 1994 in a private transaction (adjusted to reflect a subsequent 
two-for-one reverse stock split).  The purchase price was $.0231528 per 
share, which Mr. Tannebaum paid with his personal funds.

     Dr. Weinstein and his wife acquired 3,239,350 shares of Common Stock and 
Mr. Levine acquired 3,239,350 shares of Common Stock on December 9, 1994 from 
the Issuer in a private transaction (adjusted to reflect a subsequent 
two-for-one reverse stock split).  The purchase price was $.0231528 per 
share, which Dr. Weinstein and Mr. Levine paid with their respective personal 
funds.

     Mr. Smolik and Drs. Wachter, Dees, Fisher and Scott acquired their Common
Stock from the Issuer on May 16, 1997 as a result of the merger between
Photogen, Inc. (of which they were 

                                      -13-
<PAGE>

the sole stockholders) and a wholly-owned subsidiary of Issuer.  The 
consideration for the Common Stock Mr. Smolik and Drs. Wachter, Dees, Fisher 
and Scott received from the Issuer was their interest in Photogen, Inc.

     On May 16, 1997, the Issuer sold 2,975,359 shares of Common Stock to Dr.
and Mrs. Weinstein, 2,975,359 shares to Mr. Levine and 362,115 shares to Mr.
Rosenberg in a private transaction.  The purchase price was $.28568 per share,
which Dr. Weinstein and Messrs. Levine and Rosenberg paid with their respective
personal funds.

Item 4.  PURPOSE OF TRANSACTION.

          This Schedule 13D is being filed as a result of the Issuer's
registration of its common stock under Section 12(g) of the Securities Exchange
Act of 1934 pursuant to a Form 10-SB filed with the Securities and Exchange
Commission.  All of the shares of Common Stock subject to this Schedule 13D have
been owned by the reporting persons prior to the effectiveness of the Issuer's
Section 12(g) registration.

          Mr. Smolik and Drs. Wachter, Dees, Fisher and Weinstein are officers
and/or directors of the Issuer, and they are in a position to influence
management of the Issuer.  In that capacity, they may consider from time to time
various plans for the Issuer to raise additional capital which may have the
effect of changing the present capitalization of the Issuer.  In addition, the
Issuer may expand its Board to add one or more independent directors.

          The shares of Common Stock beneficially owned by the reporting persons
are subject to a Voting Agreement and, accordingly, the parties to the Voting
Agreement may be deemed to share voting power with respect to their shares.  The
Voting Agreement was entered into among Eric Wachter, Craig Dees, Walter Fisher,
Tim Scott and John Smolik (the "Tennessee Stockholders") and  Theodore
Tannebaum, Robert Weinstein, Stuart Levine and Thomas Rosenberg  (the "Chicago
Stockholders").   The Voting Agreement generally provides that the Tennessee
Stockholders and Chicago Stockholders will vote shares of common stock
beneficially owned by them (i) in accordance with the unanimous recommendation
of the Board of Directors with respect to any amendments to the Articles of
Incorporation or Bylaws, (ii) to fix the number of directors at five, (iii) to
elect to the Board of Directors four persons nominated by holders of 80% of the
shares of the Tennessee Stockholders and one person nominated by holders of 80%
of the shares of the Chicago Stockholders (and to remove any such director at
the request of the stockholders who nominated him), and (iv) to fix the number
of directors on the Board's Executive Committee at three, two of whom will be
selected by the Tennessee Stockholders and one of whom will be selected by the
Chicago Stockholders.  The Voting Agreement is attached as Exhibit 1 to this
Schedule 13D.

     Except as described above, no reporting person has any current plans or
proposals that relate to or would result in:

                                 -14-

<PAGE>

a.   The acquisition by any person of additional securities of the Issuer, or
     the disposition of securities of the Issuer;

b.   An extraordinary corporate transaction, such as a merger, reorganization
     or liquidation, involving the Issuer or any of its subsidiaries;

c.   A sale or transfer of a material amount of assets of the Issuer or any of
     its subsidiaries;

d.   Any change in the present board of directors or management of the Issuer,
     including any plans or proposals to change the number or term of directors
     or to fill any existing vacancies on the board;

e.   Any material change in the present capitalization or dividend policy of 
     the Issuer;

f.   Any other material change in the Issuer's business or corporate structure;

g.   Changes in the Issuer's charter, bylaws or instruments corresponding 
     thereto or other actions which may impede the acquisition of control of 
     the Issuer by any person;

h.   Causing a class of securities of the Issuer to be delisted from a national
     securities exchange or to cease to be authorized to be quoted in an 
     inter-dealer quotation system of a registered national securities 
     association;

i.   A class of equity securities of the Issuer becoming eligible for 
     termination of registration pursuant to Section 12(g)(4) of the 
     Exchange Act; or

j.   Any action similar to any of those enumerated above.


Item 5.  INTEREST IN SECURITIES OF THE ISSUER.

<TABLE>
<CAPTION>
                            Common Stock
      Name of               Beneficially            % of
   Item of Person              Owned               Class(1)        Voting Power
   _______________          _____________          ________        _____________
<S>                     <C>                      <C>               <C>
       
 John A. Smolik            4,800,000(2)             13.3%               Sole(3)

 Eric A. Wachter, Ph.D.    4,800,000(2)             13.3%               Sole(3)
 
 Craig Dees, Ph.D.         4,800,000(2)             13.3%               Sole(3)

 Walter G. Fisher, Ph.D.   4,800,000(2)             13.3%               Sole(3)
 
</TABLE>


                                 -15-

<PAGE>

<TABLE>
<CAPTION>

<S>                     <C>                      <C>               <C>

 Timothy Scott, Ph.D.      4,800,000(2)             13.3%               Sole(3)
 
 Robert J. Weinstein,      3,455,421(2)              9.6%               Sole(3), (4)
 M.D. and Lois Weinstein
 (joint tenants)

 Theodore Tannebaum        3,450,421(2)              9.6%               Sole(3), (5)
 

 Stuart P. Levine          3,426,921(2)              9.5%               Sole(3), (6)

 Thomas B. Rosenberg         362,115(2)                1%               Sole(3)
 
</TABLE>

(1) All percentages in this table are based, pursuant to Rule 13d-1(e) of the
Securities Exchange Act of 1934, on the 36,000,000 shares of Common Stock of the
Issuer outstanding as of December 24, 1997, as indicated in the Issuer's
Form 10-SB filed on December 24, 1997.

(2) Excludes shares of Common Stock owned by other reporting persons that are
subject to the Voting Agreement described in Item 4, above.

(3) Common Stock owned by this reporting person is subject to the Voting
Agreement described in Item 4, above, which requires such person to vote such
shares as specified therein.

(4) Includes 1,400,000 shares of Common Stock owned by a family partnership
controlled by Dr. and Mrs. Weinstein.

(5) Includes 600,000 shares owned by Lizette D. Greco, 600,000 shares owned by
Harley J. Tannebaum, 200,000 shares owned by Jonne Ana Tannebaum and 100,000
shares owned by Kathleen A. Beauchamp, as to which Mr. Tannebaum retains voting
rights.  See Exhibits 2, 3, 4 and 5 to this Schedule 13D.

(6) Includes 1,000,000 shares of Common Stock owned by a family partnership 
controlled by Mr. Levine.

Item 6.   CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT
          TO SECURITIES OF THE ISSUER.

     The Voting Agreement among the reporting person is described in Item 4,
above.  Harley J. Tannebaum, Lizette D. Greco, Kathleen A. Beauchamp, and
Jonne Ana Tannebaum have each granted Theodore Tannebaum a proxy over their
respective shares until such person has paid him in full.  There are no other
contracts, arrangements or understandings among any of the Item 2 Persons made
or entered into specifically with respect to holding, voting or disposing of the
Common Stock of the Issuer.

                                      -16-

<PAGE>

Item 7.   MATERIAL TO BE FILED AS EXHIBITS.

The following exhibits are filed with this Schedule 13D.

1.     Voting Agreement among Eric Wachter, Craig Dees, Walter Fisher, 
       Tim Scott, John Smolik, Theodore Tannebaum, Robert Weinstein, Stuart 
       Levine, Thomas Rosenberg, and joined into by Photogen Technologies, Inc.,
       dated May 16, 1997.

2.     Agreement between Theodore Tannebaum and Harley J. Tannebaum dated
       April 15, 1997.

3.     Agreement between Theodore Tannebaum and Lizette D. Greco dated 
       April 15, 1997.

4.     Agreement between Theodore Tannebaum and Kathleen A. Beauchamp dated
       April 15, 1997.

5.     Agreement between Theodore Tannebaum and Jonne Ana Tannebaum dated
       April 15, 1997.

6.     Joint Filing Agreement by and among Craig Dees, Walter Fisher,
       Stuart Levine, Thomas Rosenberg, Timothy Scott, John Smolik, Theodore 
       Tannebaum, Eric A. Wachter, Robert Weinstein and Lois Weinstein, dated
       February 23, 1998.


                                          -17

<PAGE>

                                      SIGNATURE

     After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

Dated: February 25, 1998


                                   /s/ John A. Smolik
                                   ------------------------------------
                                   JOHN A. SMOLIK

                                   /s/ Eric A. Wachter, Ph.D.
                                   ------------------------------------
                                   ERIC A. WACHTER, Ph.D.

                                   /s/ Craig Dees, Ph.D.
                                   ------------------------------------
                                   CRAIG DEES, Ph.D.

                                   /s/ Walter G. Fisher, Ph.D.
                                   ------------------------------------
                                   WALTER G. FISHER, Ph.D.

                                   /s/ Timothy Scott, Ph.D.
                                   ------------------------------------
                                   TIMOTHY SCOTT, Ph.D.

                                   /s/ Stuart P. Levine
                                   ------------------------------------
                                   STUART P. LEVINE

                                   /s/ Theodore Tannebaum
                                   ------------------------------------
                                   THEODORE TANNEBAUM

                                   /s/ Robert J. Weinstein, M.D.
                                   ------------------------------------
                                   ROBERT J. WEINSTEIN, M.D.


                                   /s/ Thomas B. Rosenberg
                                   ------------------------------------
                                   THOMAS B. ROSENBERG

                                      -18-

<PAGE>






                                          -19-

<PAGE>
                                                                     EXHIBIT 1

                               VOTING AGREEMENT

         This Voting Agreement ("Agreement") is entered into as of the 16th 
day of May, 1997 by and among Eric A. Wachter, Ph.D. ("Wachter"), Craig Dees, 
Ph.D. ("Dees"), Walter G. Fisher, Ph.D. ("Fisher"), Tim Scott, Ph.D. 
("Scott"), John Smolik ("Smolik"), Theodore Tannebaum ("Tannebaum"), Robert J. 
Weinstein, M.D. ("Weinstein"), Stuart P. Levine ("Levine"), and Thomas B. 
Rosenberg ("Rosenberg") (individually a "Stockholder" and collectively the 
"Stockholders"), and joined into by Photogen Technologies, Inc. for purposes 
of Sections 1(c) and 1(d) herein.  Wachter, Dees, Fisher, Scott and Smolik 
are sometimes collectively referred to herein as the "Tennessee 
Stockholders;" Tannebaum, Weinstein, Levine and Rosenberg are sometimes 
collectively referred to herein as the "Chicago Stockholders;" and the 
Chicago Stockholders or Tennessee Stockholders are each sometimes referred to 
herein as a "Stockholder."

                                   RECITALS

         The Stockholders collectively own as of the date of this Agreement 
approximately 96% of the issued and outstanding shares of common stock, $.001 
par value per share (the "Common Stock"), of Photogen Technologies, Inc., a 
Nevada corporation formerly known as M T Financial Group, Inc. (the 
"Company"). The Company owns all of the issued and outstanding shares of 
Photogen, Inc., a Tennessee corporation ("Subsidiary").

         The shares of Common Stock together with all other capital stock or 
securities of the Company, whether authorized or outstanding as of the date 
hereof or at any time hereafter, are collectively referred to as the "Shares."

                                   AGREEMENT

         Now, therefore, in consideration of the mutual promises herein and 
other consideration, the receipt and adequacy of which is acknowledged, the 
parties hereby agree as follows:

         1.   VOTING AGREEMENT.

         (a)  The agreement in Section 1(b) shall be deemed to constitute a 
voting agreement among the Stockholders pursuant to Section 78.365(3) of the 
Nevada General Corporation Law.  The agreement in Section 1(c) shall be 
deemed to constitute an agreement among the parties hereto pursuant to 
Section 48-17-302 of the Tennessee Business Corporation Act.  As used in this 
Agreement, the determination of a "Beneficial Owner" or "Beneficial 
Ownership" shall be governed by Regulation 13d-3 under the Securities 
Exchange Act of 1934, as amended.  All percentages of stock ownership in this 
Agreement shall be calculated on a fully-diluted basis.

         (b)  At each annual meeting of the stockholders of the Company, or 
at each special meeting of the stockholders of the Company, and at any other 
time at which stockholders of the Company will have the right to or will vote 
for or render consent in writing, then and in each event, each Stockholder 
hereby agrees to vote or cause to be voted all Shares of which he is the 
Beneficial Owner in favor of the following actions to the extent any such 
actions are subject to such vote or consent:

                                       -1-

<PAGE>

                (i)  To amend, alter, modify or repeal the Articles of
    Incorporation or the By-Laws of the Company only in accordance with the
    unanimous recommendation of all of the Directors of the Company (whether or
    not any Board Action is required by law);

               (ii)  To fix and maintain the number of directors of the
    Company at five (5);

              (iii)  To cause and maintain the election to the Board of
    Directors of the Company of the following:  (A) four (4) persons nominated
    by the holders of 80% of the aggregate Shares Beneficially Owned by the
    Tennessee Stockholders; and (B) one (1) person nominated by the holders of
    80% of the aggregate Shares Beneficially Owned by the Chicago Stockholders;

               (iv)  To remove from the Board of Directors of the Company any
    director nominated by the Tennessee or Chicago Stockholders, as applicable
    pursuant to paragraph 1(b)(iii) at the request of the Stockholders
    nominating such director; and

                (v)  To fix and maintain the Executive Committee of the Board
    of Directors of the Company to consist of three (3) directors, two (2) of
    whom shall be selected by the directors nominated by the Tennessee
    Stockholders and one (1) of whom shall be selected by the director
    nominated by the Chicago Stockholders.

         (c)  Company is agreeing for the benefit of the other parties hereto 
to act in its capacity as stockholder of Subsidiary to the actions set forth 
in this paragraph (c).  At each annual meeting of the stockholder of the 
Subsidiary, or at each special meeting of the stockholder of the Subsidiary, 
and at any other time at which stockholder of the Subsidiary will have the 
right to or will vote for or render consent in writing, then and in each 
event, the Company (as the sole stockholder of the Subsidiary) hereby agrees 
to vote or cause to be voted all voting securities of the Subsidiary of which 
it is the Beneficial Owner in favor of the following actions to the extent 
any such actions are subject to such vote or consent:

                (i)  To amend, alter, modify or repeal the Articles of
    Incorporation or the By-Laws of the Subsidiary only in accordance with the
    unanimous recommendation of all of the Directors of the Subsidiary,
    (whether or not any Board Action is required by law);

               (ii)  To fix and maintain the number of directors of the
    Subsidiary at five (5);

              (iii)  To cause and maintain the election to the Board of
    Directors of the Subsidiary of the following:  (A) four (4) persons
    nominated by the directors of the Company who were selected by the
    Tennessee Stockholders; and (B) one (1) person nominated by the director of
    the Company who was selected by the Chicago Stockholders;

               (iv)  To remove from the Board of Directors of the Subsidiary
    any director nominated by the Tennessee or Chicago Stockholders, as
    applicable, pursuant to paragraph 1(c)(iii) at the request of the Company
    directors or director, as applicable, nominating such Subsidiary director;
    and

                (v)  To fix and maintain the Executive Committee of the Board
    of Directors of the Subsidiary to consist of three (3) directors, two (2)
    of whom shall be selected by the 

                                       -2-

<PAGE>

    directors nominated by the Tennessee Stockholders and one (1) of whom shall
    be selected by the director nominated by the director of the Company who
    was selected by the Chicago Stockholders.

         (d)  The Company or Subsidiary, as applicable, shall provide the 
Stockholders entitled to nominate directors hereunder prior notice of any 
intended mailing of notice to Stockholders for a meeting at which any of the 
actions subject to paragraphs 1(b) or 1(c) are to be acted upon.  Thereafter, 
Stockholders (or Company directors with respect to nominations of Subsidiary 
directors) entitled to nominate directors hereunder shall notify the Company 
or the Subsidiary (as applicable) in writing, prior to such mailing, of the 
person nominated by him or it to be a director; provided, that if such 
Stockholder (or Company directors) fails to give notice to the Company or 
Subsidiary (as applicable), it shall be deemed that the nominee of such party 
for such meeting is the person then serving as director pursuant to such 
Stockholders' (or Company directors') previous nomination.

         2.   NECESSARY ACTS; ADDITIONAL PARTIES.  Each of the parties hereto 
agrees that he or it will do (or cause to be done) any act or thing and will 
execute (or cause to be executed) any and all instruments necessary and/or 
proper to make effective the provisions of this Agreement.  Each Stockholder 
represents and warrants to, and agrees with, each other party hereto that (a) 
any transferee holding Shares over which such Stockholder remains the 
Beneficial Owner shall execute and deliver a counterpart of this Agreement 
and shall be bound by the provisions hereof as if such transferee was an 
original party hereto; and (b) such Stockholder shall provide each other 
party hereto true and complete information concerning the Beneficial 
Ownership of Shares in the hands of transferees.

         3.   LEGEND ON STOCK CERTIFICATE.  Each certificate representing 
Shares covered by this Agreement is subject to and shall bear the restrictive 
legend set forth below:

    The voting of shares of stock evidenced by this certificate is subject to a
    Voting Agreement dated as of the 16th day of May, 1997.  Copies of the
    Agreement may be obtained from the Secretary of the Company at no cost by
    written request of the holder of record of this certificate.

         4.   GENERAL PROVISIONS.

         (a)  This Agreement shall be binding upon and inure to the benefit 
of the parties hereto and their legal representatives, heirs and legatees.

         (b)  The section headings in this Agreement are inserted for 
convenience of reference only, and shall not affect the construction or 
interpretation of this Agreement.

         (c)  The failure at any time to enforce any of the provisions of 
this Agreement shall not be construed as a waiver of such provisions and 
shall not affect the right of any party thereafter to enforce each and every 
provision of this Agreement in accordance with its terms.

         (d)  This Agreement shall be governed by and construed in accordance 
with the laws of the State of Illinois without giving effect to conflict of 
laws principles thereof, except to the extent the Nevada General Corporation 
Law and the Tennessee Business Corporation Law govern portions hereof.

                                       -3-

<PAGE>

         (e)  This Agreement may be executed in one or more counterparts, 
each of which shall be deemed to be an original and shall be enforceable 
against the party executing the same, and all of which together shall 
constitute a single Agreement.  In making proof of this Agreement, it shall 
not be necessary to produce or account for more than one such counterpart.

         (f)  Whenever possible, each provision of this Agreement shall be 
interpreted in such manner as to be effective and valid under applicable law, 
but if any provision of this Agreement shall be held to be invalid by a court 
of competent jurisdiction, the remaining provisions shall remain in full 
force and effect and the provision held invalid shall be modified to the 
extent necessary to be valid and shall be enforced as modified.

         (g)  Any notice to be served under this Agreement shall be in 
writing and shall be deemed to be delivered or given upon receipt if 
delivered personally, by overnight courier or by telecopier, or two days 
after mailing by registered mail, return receipt requested, addressed as 
follows:

              IF TO THE COMPANY:

              Photogen Technologies, Inc.
              To its then current address
              Attention:  John Smolik

              IF TO ANY STOCKHOLDER:

              To such Stockholder's address on file in the
              stock records of the Company

or to such other place as a party may specify in writing, delivered in 
accordance with the provisions of this subsection.

         (h)  This Agreement constitutes the full and entire understanding 
and agreement of the parties with regard to the subject hereof, and 
supersedes any prior agreement or understanding, written or oral, with 
respect to such subject matter.  No party shall be liable or bound by any 
representations, warranties or agreements, or any other information or 
materials previously delivered, whether written or oral, regarding such 
subject matter.

         5.   AMENDMENT; TERMINATION.  This Agreement may be modified or 
amended in any respect upon the written approval of the holders of 90% of the 
Shares, and as so modified or amended, this shall continue to bind all 
Stockholders regardless of whether they consented to such modification or 
amendment.  This Agreement shall terminate upon the earliest to occur of the 
following:  (i) the written approval of the termination executed by holders 
of 90% or more of the Shares; (ii) the Stockholders collectively cease to own 
an aggregate of 20% of the issued and outstanding voting securities of the 
Company; (iii) the merger of the Company with another company in which the 
Company is not the survivor or the sale of all or substantially all of the 
Company's assets; or (vii) the 15th anniversary of the date of this Agreement.

                                       -4-

<PAGE>

         IN WITNESS WHEREOF, the parties hereto have executed this Agreement 
as of the date first written above.

                             /s/ E. A. Wachter
                             _________________________________________
                             Eric A. Wachter, Ph.D.

                             /s/ Craig Dees
                             _________________________________________
                             Craig Dees, Ph.D.

                             /s/ Walter A. Fisher
                             _________________________________________
                             Walter G. Fisher, Ph.D.

                             /s/ Tim C. Scott
                             _________________________________________
                             Tim Scott, Ph.D.

                             /s/ John Smolik
                             _________________________________________
                             John Smolik

                             /s/ Theodore Tannebaum
                             _________________________________________
                             Theodore Tannebaum

                             /s/ Robert Weinstein
                             _________________________________________
                             Robert J. Weinstein, M.D.

                             /s/ Stuart Levine
                             _________________________________________
                             Stuart P. Levine

                             /s/ Thomas B. Rosenberg
                             _________________________________________
                             Thomas B. Rosenberg


         Joined into by for purposes of Sections 1(c) and 1(d) herein.


                             Photogen Technologies, Inc.


                             By:/s/ John Smolik
                                ______________________________________
                             Its: President
                                 _____________________________________

                                       -5-




<PAGE>
                                      AGREEMENT

          Theodore Tannebaum ("Tannebaum") hereby sells 3,701,677 shares of
common stock, par value $.001 per share ("Common Stock"), of M T Financial
Group, Inc., a Nevada corporation (the "Company"), to Harley J. Tannebaum
("Harley") at a price of $.0463055 per share for an aggregate of $171,408. 
Harley agrees to pay for the same on April 15, 2002 or thereafter on demand,
with interest on the unpaid principal at 10% compounded annually from the date
hereof.  

          Harley understands that the Common Stock has not been and will not in
the foreseeable future be registered under the Securities Act or applicable
state securities laws and is being offered and sold to Harley in reliance upon
federal and state exemptions for transactions not involving any public offering.
Harley is acquiring the Common Stock for his own account for investment purposes
and not with the view to the resale or distribution thereof except in compliance
with applicable securities laws.  Harley has received information concerning the
Company and is able to evaluate the merits and risks in holding the Common Stock
either on his own behalf or based on advice from his advisors, and is able to
bear the economic risk and lack of liquidity inherent in holding the Common
Stock.

          The Common Stock will be registered in the name of Harley J. Tannebaum
at 680 N. Lakeshore Drive, Apartment 1424, Chicago, IL 60611 but will be held by
Tannebaum, along with stock powers signed by Harley in blank with signature
guarantee, as collateral for Harley's payment of the purchase price and Harley
hereby grants to Tannebaum a security interest in such Common Stock to secure
full payment of the purchase price.  Further, until all of the purchase price
for the Common Stock being purchased hereunder is fully paid, Harley hereby
grants Tannebaum a proxy to vote all of said Common Stock on any matter calling
for a shareholder vote or providing for a shareholder consent.  Harley
acknowledges that this proxy is coupled with an interest and will survive the
death or disability of Harley.

          Tannebaum represents and warrants to Harley that he has good and
marketable title to the Common Stock, free and clear of any liens or
encumbrances except securities law restrictions, which restrictions shall apply
to the Common Stock.  Accordingly, the certificate in Harley's name representing
the Common Stock shall carry the following legend on the reverse side:

          No sale, offer to sell or transfer of the shares represented
          by this certificate shall be made unless a registration
          statement under the Federal Securities Act of 1933, as
          amended, with respect to such shares is then in effect or an
          exemption from the registration requirements of such Act is
          then in fact applicable to such shares.

<PAGE>

          Further, in the event the Company's contemplated Plan and Agreement of
Recapitalization and Merger is to be consummated, Harley agrees prior to the
consummation to (1) contribute to the Company's treasury 3,101,677 shares of the
Common Stock, retaining only 600,000 of Common Stock, for which he will
nevertheless be obligated to pay Tannebaum the full $171,408 ($0.28568 per
share) and (2) join into the Voting Agreement (a copy of which is attached)
regarding the 600,000 shares of Common Stock and agrees to vote such 600,000
shares of Common Stock in accordance with the vote or consent of the other
Chicago Stockholders (as defined in the Voting Agreement), which Voting
Agreement with respect to the 600,000 shares of Common Stock shall be effective
so long as Harley has a beneficial interest in said 600,000 shares of Common
Stock.

          This Agreement is made as of April 15, 1997.  


                              /s/  Harley J. Tannebaum
                              -----------------------------------
                              Harley J. Tannebaum

                              /s/ Theodore Tannebaum
                              ------------------------------------
                              Theodore Tannebaum






                                    -2-

<PAGE>

                                      AGREEMENT

          Theodore Tannebaum ("Tannebaum") hereby sells 3,701,677 shares of
common stock, par value $.001 per share ("Common Stock"), of M T Financial
Group, Inc., a Nevada corporation (the "Company"), to Lizette D. Greco ("Greco")
at a price of $.0463055 per share for an aggregate of $171,408.  Greco agrees to
pay for the same on April 15, 2002 or thereafter on demand, with interest on the
unpaid principal at 10% compounded annually from the date hereof.  

          Greco understands that the Common Stock has not been and will not in
the foreseeable future be registered under the Securities Act or applicable
state securities laws and is being offered and sold to Greco in reliance upon
federal and state exemptions for transactions not involving any public offering.
Greco is acquiring the Common Stock for her own account for investment purposes
and not with the view to the resale or distribution thereof except in compliance
with applicable securities laws.  Greco has received information concerning the
Company and is able to evaluate the merits and risks in holding the Common Stock
either on her own behalf or based on advice from her advisors, and is able to
bear the economic risk and lack of liquidity inherent in holding the Common
Stock.

          The Common Stock will be registered in the name of Lizette D. Greco at
2506 Lincoln, Long Grove, IL 60047 but will be held by Tannebaum, along with
stock powers signed by Greco in blank with signature guarantee, as collateral
for Greco's payment of the purchase price and Greco hereby grants to Tannebaum a
security interest in such Common Stock to secure full payment of the purchase
price.  Further, until all of the purchase price for the Common Stock being
purchased hereunder is fully paid, Greco hereby grants Tannebaum a proxy to vote
all of said Common Stock on any matter calling for a shareholder vote or
providing for a shareholder consent.  Greco acknowledges that this proxy is
coupled with an interest and will survive the death or disability of Greco.

          Tannebaum represents and warrants to Greco that he has good and
marketable title to the Common Stock, free and clear of any liens or
encumbrances except securities law restrictions, which restrictions shall apply
to the Common Stock.  Accordingly, the certificate in Greco's name representing
the Common Stock shall carry the following legend on the reverse side:

          No sale, offer to sell or transfer of the shares represented
          by this certificate shall be made unless a registration
          statement under the Federal Securities Act of 1933, as
          amended, with respect to such shares is then in effect or an
          exemption from the registration requirements of such Act is
          then in fact applicable to such shares.

<PAGE>


          Further, in the event the Company's contemplated Plan and Agreement of
Recapitalization and Merger is to be consummated, Greco agrees prior to the
consummation to (1) contribute to the Company's treasury 3,101,677 shares of the
Common Stock, retaining only 600,000 of Common Stock, for which she will
nevertheless be obligated to pay Tannebaum the full $171,408 ($0.28568 per
share) and (2) join into the Voting Agreement (a copy of which is attached)
regarding the 600,000 shares of Common Stock and agrees to vote such 600,000
shares of Common Stock in accordance with the vote or consent of the other
Chicago Stockholders (as defined in the Voting Agreement), which Voting
Agreement with respect to the 600,000 shares of Common Stock shall be effective
so long as Greco has a beneficial interest in said 600,000 shares of Common
Stock.

          This Agreement is made as of April 15, 1997.  


                              /s/ Lizette D. Greco
                              -----------------------------------
                              Lizette D. Greco              

                              /s/ Theodore Tannebaum
                              ------------------------------------
                              Theodore Tannebaum










                                  -2-

<PAGE>

                                      AGREEMENT

          Theodore Tannebaum ("Tannebaum") hereby sells 616,946 shares of common
stock, par value $.001 per share ("Common Stock"), of M T Financial Group, Inc.,
a Nevada corporation (the "Company"), to Kathleen A. Beauchamp ("Beauchamp") at
a price of $.0463055 per share for an aggregate of $28,568.  Beauchamp agrees to
pay for the same on April 15, 2002 or thereafter on demand, with interest on the
unpaid principal at 10% compounded annually from the date hereof.  

          Beauchamp understands that the Common Stock has not been and will not
in the foreseeable future be registered under the Securities Act or applicable
state securities laws and is being offered and sold to Beauchamp in reliance
upon federal and state exemptions for transactions not involving any public
offering.  Beauchamp is acquiring the Common Stock for her own account for
investment purposes and not with the view to the resale or distribution thereof
except in compliance with applicable securities laws.  Beauchamp has received
information concerning the Company and is able to evaluate the merits and risks
in holding the Common Stock either on her own behalf or based on advice from her
advisors, and is able to bear the economic risk and lack of liquidity inherent
in holding the Common Stock.

          The Common Stock will be registered in the name of Kathleen A.
Beauchamp at 875 N. Michigan Avenue, Suite 2930, Chicago, Illinois 60611 but
will be held by Tannebaum, along with stock powers signed by Beauchamp in blank
with signature guarantee, as collateral for Beauchamp's payment of the purchase
price and Beauchamp hereby grants to Tannebaum a security interest in such
Common Stock to secure full payment of the purchase price.  Further, until all
of the purchase price for the Common Stock being purchased hereunder is fully
paid, Beauchamp hereby grants Tannebaum a proxy to vote all of said Common Stock
on any matter calling for a shareholder vote or providing for a shareholder
consent.  Beauchamp acknowledges that this proxy is coupled with an interest and
will survive the death or disability of Beauchamp.

          Tannebaum represents and warrants to Beauchamp that he has good and
marketable title to the Common Stock, free and clear of any liens or
encumbrances except securities law restrictions, which restrictions shall apply
to the Common Stock.  Accordingly, the certificate in Beauchamp's name
representing the Common Stock shall carry the following legend on the reverse
side:

          No sale, offer to sell or transfer of the shares represented
          by this certificate shall be made unless a registration
          statement under the Federal Securities Act of 1933, as
          amended, with respect to such shares is then in effect or an
          exemption from the registration requirements of such Act is
          then in fact applicable to such shares.

<PAGE>

          Further, in the event the Company's contemplated Plan and Agreement of
Recapitalization and Merger is to be consummated, Beauchamp agrees prior to the
consummation to (1) contribute to the Company's treasury 516,946 shares of the
Common Stock, retaining only 100,000 of Common Stock, for which she will
nevertheless be obligated to pay Tannebaum the full $28,568 ($0.28568 per share)
and (2) join into the Voting Agreement (a copy of which is attached) regarding
the 100,000 shares of Common Stock and agrees to vote such 100,000 shares of
Common Stock in accordance with the vote or consent of the other Chicago
Stockholders (as defined in the Voting Agreement), which Voting Agreement with
respect to the 100,000 shares of Common Stock shall be effective so long as
Beauchamp has a beneficial interest in said 100,000 shares of Common Stock.

          This Agreement is made as of April 15, 1997.  


                              /s/ Kathleen A. Beauchamp
                              -----------------------------------
                              Kathleen A. Beauchamp              

                              /s/ Theodore Tannebaum
                              -----------------------------------
                              Theodore Tannebaum









                                       -2-

<PAGE>
                                      AGREEMENT

          Theodore Tannebaum ("Tannebaum") hereby sells 3,701,677 shares of
common stock, par value $.001 per share ("Common Stock"), of M T Financial
Group, Inc., a Nevada corporation (the "Company"), to Jonne Ana Tannebaum
("Ana") at a price of $.0463055 per share for an aggregate of $57,136.  Ana
agrees to pay for the same on April 15, 2002 or thereafter on demand, with
interest on the unpaid principal at 10% compounded annually from the date
hereof.  

          Ana understands that the Common Stock has not been and will not in the
foreseeable future be registered under the Securities Act or applicable state
securities laws and is being offered and sold to Ana in reliance upon federal
and state exemptions for transactions not involving any public offering.  Ana is
acquiring the Common Stock for her own account for investment purposes and not
with the view to the resale or distribution thereof except in compliance with
applicable securities laws.  Ana has received information concerning the Company
and is able to evaluate the merits and risks in holding the Common Stock either
on her own behalf or based on advice from her advisors, and is able to bear the
economic risk and lack of liquidity inherent in holding the Common Stock.

          The Common Stock will be registered in the name of Jonne Ana Tannebaum
at 132 East Delaware, Suite 5006, Chicago, Illinois 60611 but will be held by
Tannebaum, along with stock powers signed by Ana in blank with signature
guarantee, as collateral for Ana's payment of the purchase price and Ana hereby
grants to Tannebaum a security interest in such Common Stock to secure full
payment of the purchase price.  Further, until all of the purchase price for the
Common Stock being purchased hereunder is fully paid, Ana hereby grants
Tannebaum a proxy to vote all of said Common Stock on any matter calling for a
shareholder vote or providing for a shareholder consent.  Ana acknowledges that
this proxy is coupled with an interest and will survive the death or disability
of Ana.

          Tannebaum represents and warrants to Ana that he has good and
marketable title to the Common Stock, free and clear of any liens or
encumbrances except securities law restrictions, which restrictions shall apply
to the Common Stock.  Accordingly, the certificate in Ana's name representing
the Common Stock shall carry the following legend on the reverse side:

          No sale, offer to sell or transfer of the shares represented
          by this certificate shall be made unless a registration
          statement under the Federal Securities Act of 1933, as
          amended, with respect to such shares is then in effect or an
          exemption from the registration requirements of such Act is
          then in fact applicable to such shares.

<PAGE>


          Further, in the event the Company's contemplated Plan and Agreement of
Recapitalization and Merger is to be consummated, Ana agrees prior to the
consummation to (1) contribute to the Company's treasury 1,033,892 shares of the
Common Stock, retaining only 200,000 of Common Stock, for which she will
nevertheless be obligated to pay Tannebaum the full $57,136 ($0.28568 per share)
and (2) join into the Voting Agreement (a copy of which is attached) regarding
the 200,000 shares of Common Stock and agrees to vote such 200,000 shares of
Common Stock in accordance with the vote or consent of the other Chicago
Stockholders (as defined in the Voting Agreement), which Voting Agreement with
respect to the 200,000 shares of Common Stock shall be effective so long as Ana
has a beneficial interest in said 200,000 shares of Common Stock.

          This Agreement is made as of April 15, 1997.  


                              /s/ Jonne Ana Tannebaum
                              ------------------------------------
                              Jonne Ana Tannebaum

                              /s/ Theodore Tannebaum
                              ------------------------------------
                              Theodore Tannebaum







                                      -2-

<PAGE>
                                                                       Exhibit 6


                                JOINT FILING AGREEMENT

In accordance with Rule 13d-1(f) under the Securities Exchange Act of 1934, 
as amended, each of the persons named below agrees to the joint filing on 
behalf of each of them of a Statement on Schedule 13D (including amendments 
thereto) with respect to the common stock, $.001 par value per share, of 
Photogen Technologies, Inc., a Nevada corporation, and further agrees that 
this Joint Filing Agreement be included as an exhibit to such filings 
provided that, as contemplated by Rule 13d-1(f)(1)(ii), no person shall be 
responsible for the completeness or accuracy of the information concerning 
the other persons making the filing, unless such person knows or has reason 
to believe that such information is inaccurate.  This Joint Filing Agreement 
may be executed in any number of counterparts, all of which taken together 
shall constitute one and the same instrument.

Date:     February 24, 1998


/s/   Craig Dees, Ph.D.                    /s/    Walter G. Fisher, Ph.D.
________________________________           ___________________________________
Craig Dees, Ph.D.                                 Walter G. Fisher, Ph.D. 
                           



/s/  Timothy Scott, Ph.D.                  /s/  Theodore Tannebaum
________________________________           ___________________________________
Timothy Scott, Ph.D.                            Theodore Tannebaum



/s/  Stuart P. Levine                      /s/  Thomas B. Rosenberg
________________________________           ___________________________________
Stuart P. Levine                                Thomas B. Rosenberg



/s/  John A. Smolik                        /s/  Eric A. Wachter, Ph.D.
________________________________           ___________________________________
John A. Smolik                                  Eric A. Wachter, Ph.D.



/s/  Robert J. Weinstein, M.D.             /s/  Lois Weinstein
________________________________           ___________________________________
Robert J. Weinstein, M.D.                       Lois Weinstein




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