Chinese medicine photosensitizer stimulated by violet ray for early-stage cancer diagnosis

Yangwu Ma; Jianping Li; Di Liang; Lanna Li

doi:10.1117/12.482998

12 September 2002 Chinese medicine photosensitizer stimulated by violet ray for early-stage cancer diagnosis

Yangwu Ma, Jianping Li, Di Liang, Lanna Li

Proceedings Volume 4916, Optics in Health Care and Biomedical Optics: Diagnostics and Treatment; (2002) https://doi.org/10.1117/12.482998
Event: Photonics Asia, 2002, Shanghai, China

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.

Citation Download Citation

Yangwu Ma, Jianping Li, Di Liang, and Lanna Li "Chinese medicine photosensitizer stimulated by violet ray for early-stage cancer diagnosis", Proc. SPIE 4916, Optics in Health Care and Biomedical Optics: Diagnostics and Treatment, (12 September 2002); https://doi.org/10.1117/12.482998

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