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22 June 2005 Depth-resolved fluorescence of biological tissue
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The depth-resolved autofluorescence ofrabbit oral tissue, normal and dysplastic human ectocervical tissue within l20μm depth were investigated utilizing a confocal fluorescence spectroscopy with the excitations at 355nm and 457nm. From the topmost keratinizing layer of oral and ectocervical tissue, strong keratin fluorescence with the spectral characteristics similar to collagen was observed. The fluorescence signal from epithelial tissue between the keratinizing layer and stroma can be well resolved. Furthermore, NADH and FADfluorescence measured from the underlying non-keratinizing epithelial layer were strongly correlated to the tissue pathology. This study demonstrates that the depth-resolved fluorescence spectroscopy can reveal fine structural information on epithelial tissue and potentially provide more accurate diagnostic information for determining tissue pathology.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yicong Wu, Peng Xi, Tak-Hong Cheung, So Fan Yim, Mei-Yung Yu, and Jianan Y. Qu "Depth-resolved fluorescence of biological tissue", Proc. SPIE 5771, Saratov Fall Meeting 2004: Optical Technologies in Biophysics and Medicine VI, (22 June 2005);

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