Patent ID: 6694176
Filing Date: 2004-02-17
Classification: A61B

Abstract:
A method for detecting fluorescence in which a sub mucosa of organic tissue is distinguished from a mucosa thereof comprising:projecting a stimulating light onto the organic tissue; distinguishing the mucosa from the sub mucosa based on a normalized intensity of an autofluorescence emitted from the organic tissue utilizing the fact that the spectrum of autofluorescence emitted from the sub mucosa is different from the spectrum of autofluorescence emitted from the mucosa, wherein the autofluorescence emitted from the organic tissue has an overall integrated intensity, said method further comprising filtering the autofluorescence emitted from the organic tissue to isolate a first wavelength region, and wherein the normalized intensity comprises the intensity of the autofluorescence in the first wavelength region, divided by the intensity over the overall integrated intensity.