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Proceedings Paper

Chinese medicine photosensitizer stimulated by violet ray for early-stage cancer diagnosis
Author(s): Yangwu Ma; Jianping Li; Di Liang; Lanna Li
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Paper Abstract

A novel technique and equipment for the diagnosis and treatment ofthe gastric cancer using violet laser to stimulate the traditional Chinese medicine photosensitizer are proposed. The photosensitizer's feature that it can gather together selectively inside the tumor tissues is utilized to test and treat the early-stage gastric cancer. The characteristic absorption spectrum and fluorescence emission spectrum of the traditional Chinese medicine photosensitizer are measured, and two violet light sources matching with the spectrums are proposed as well. One is "Hg-Xe" lamp with a special configuration at 433nm at the peak power, and the other is violet LD with a wavelength 405nm at the peak power, which exactly matches the absorption peak ofthe traditional Chinese medicine photosensitizer.

Paper Details

Date Published: 12 September 2002
PDF: 8 pages
Proc. SPIE 4916, Optics in Health Care and Biomedical Optics: Diagnostics and Treatment, (12 September 2002); doi: 10.1117/12.482998
Show Author Affiliations
Yangwu Ma, Zhejiang Univ. (China)
Jianping Li, Zhejiang Univ. (China)
Di Liang, Zhejiang Univ. (China)
Lanna Li, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 4916:
Optics in Health Care and Biomedical Optics: Diagnostics and Treatment
Britton Chance; Mingzhe Chen; Gilwon Yoon, Editor(s)

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