Clinical LIF pharmacokinetic measurements with Photofrin II for optimizing the photodetection of early cancer

Daniel Braichotte; Georges A. Wagnieres; J. M. Philippoz; Roland Bays; Hans-Beat Ris M.D.; Philippe Monnier; Andre Chatelain; Hubert van den Bergh

doi:10.1117/12.60952

1 June 1992 Clinical LIF pharmacokinetic measurements with Photofrin II for optimizing the photodetection of early cancer

Daniel Braichotte, Georges A. Wagnieres, J. M. Philippoz, Roland Bays, Hans-Beat Ris M.D., Philippe Monnier, Andre Chatelain, Hubert van den Bergh

Author Affiliations +

Proceedings Volume 1645, Optical Methods for Tumor Treatment and Detection: Mechanisms and Techniques in Photodynamic Therapy; (1992) https://doi.org/10.1117/12.60952
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

New results are presented on the pharmacokinetics of the fluorescing fraction of Photofrin II in patients with an early cancer in the oesophagus or the buccal cavity. The light-induced fluorescence signal shows a relatively high contrast between tumor and surrounding normal tissue at short times after i.v. injection. The magnitude of this contrast appears to correlate with the staging of the cancer, the more invasive tumors showing the highest contrast. Some early results on the ex vivo fluorescence analysis of biopsies taken on patients injected with the new sensitizer meta-tetra(hydroxyphenyl)chlorin (mTHPC) demonstrate the selectivity of this efficient second generation photosensitizer for advanced lung cancer. mTHPC appears to have good properties for photodetection and has a rather high rate of photobleaching. The significant of the latter is discussed in relation to simplifying light application in PDT.

Citation Download Citation

Daniel Braichotte, Georges A. Wagnieres, J. M. Philippoz, Roland Bays, Hans-Beat Ris M.D., Philippe Monnier, Andre Chatelain, and Hubert van den Bergh "Clinical LIF pharmacokinetic measurements with Photofrin II for optimizing the photodetection of early cancer", Proc. SPIE 1645, Optical Methods for Tumor Treatment and Detection: Mechanisms and Techniques in Photodynamic Therapy, (1 June 1992); https://doi.org/10.1117/12.60952

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE