PHOTOGEN TECHNOLOGIES INC, S-3, EX-23.1, 2000-09-22

PHOTOGEN TECHNOLOGIES INC
S-3, EX-23.1, 2000-09-22
PHARMACEUTICAL PREPARATIONS

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                                                                  EXHIBIT 23.1

                           CONSENT OF BDO SEIDMAN, LLP,
                    INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS

Photogen Technologies, Inc.
Knoxville, TN

      We hereby consent to the incorporation by reference in the Prospectus
constituting a part of this Registration Statement of our report dated
February 25, 2000, relating to the consolidated financial statements of
Photogen Technologies, Inc. appearing in the Company's Annual Report on Form
10-KSB for the year ended December 31, 1999.

      We also consent to the reference to us under caption "Experts" in the
Prospectus.

                                       /s/ BDO SEIDMAN, LLP

                                       BDO SEIDMAN, LLP

Chicago, Illinois
September 21, 2000