| abstract |
The distribution of abnormal tissue, such as lesions, in an observed object is precisely detected regardless of the distribution of absorbing material present in a living organism. Provided is a fluorescence imaging apparatus ( 1 ) including an excitation-light radiating unit ( 2 ) that irradiates an observed object with excitation light of a plurality of wavelengths; a filter ( 14 ) that transmits fluorescence in a specific wavelength band from among fluorescence produced by the observed object in response to the excitation light radiated from the excitation-light radiating unit ( 2 ); a light detector ( 15 ) that detects the fluorescence transmitted through the filter ( 14 ); and a computing unit ( 18 ) that calculates a fluorescence intensity ratio in the same wavelength band in response to the excitation light of the plurality of wavelengths, which is detected by the light detector ( 15 ). |