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Trends in Photochemistry & Photobiology   Volumes    Volume 2 
Abstract
Detection and localization of early lung cancer by laser-induced fluorescence
Stephen Lam, Jaclyn Hung, Branko Palcic
Pages: 309 - 322
Number of pages: 14
Trends in Photochemistry & Photobiology
Volume 2 

Copyright © 1991 Research Trends. All rights reserved

ABSTRACT
 
Fluorescence detection of early lung cancer (carcinoma in situ/microinvasive cancer) using Photofrin (porfimer sodium) has been limited by the complexity of the equipment required as well as the prolonged skin photosensitivity associated with high doses of photofrin. A new imaging system is described that can detect dysplasia and carcinoma in situ using differences in tissue autofluorescence. A clinical prototype has been developed consisting of a helium-cadmium laser, an image-intensified CCD camera with filters, an image processing system and a video monitor. The same device can also be used with low non-skin toxic doses of Photofrin when necessary.
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