Patent ID: 7646002

Claim:
A fluorescence detecting system comprising: a stimulating light projecting means which projects onto an object part, which has been dosed with a fluorescence agent, first stimulating light in an exciting wavelength range of the fluorescence agent and second stimulating light which differs from the first stimulating light in the exciting wavelength range and is in an exciting wavelength range of an auto-fluorescence material contained in the object part; a fluorescence information obtaining means which obtains fluorescence from fluorescence agent information based on fluorescence from the fluorescence agent emitted from the object part in response to the projection of the first stimulating light and the auto-fluorescence information based on auto-fluorescence emitted from the object part in response to the projection of the second stimulating light, wherein the fluorescence agent does not emit fluorescence in response to the projection of the second stimulating light; and a determining means which determines a tissue property of the object part on the basis of the fluorescence from the fluorescence agent information and the auto-fluorescence information, wherein the determining means determines: that the tissue property of the object part is diseased if both a result of the determination based on the fluorescence from the fluorescence agent information and a result of the determination based on the auto-fluorescence information indicate that the object part is diseased, that the tissue property of the object part is normal if both the result of the determination based on the fluorescence from the fluorescence agent information and the result of determination based on the auto-fluorescence information indicate that the object part is normal, and that a probability that the tissue property of the object part diseased is greater in a case that the result of the determination based on the fluorescence from the fluorescence agent information indicates that the object part is diseased and the result of the determination based on the auto-fluorescence information indicates that the object part is normal, than in a case that the result of the determination based on the fluorescence from the fluorescence agent information indicates that the object part is normal and the result of the determination based on the auto-fluorescence information indicates that the object part is diseased.