Patent Document ID: 20130200273
Application ID: 13834395
Patent Status: 0

Claim One:
1. A fluoroscopy apparatus comprising: an illumination portion having a light source that radiates illumination light and excitation light onto a subject; a fluorescence-imaging unit that acquires a fluorescence image by imaging fluorescence generated at the subject by the radiation of the excitation light from the illumination portion; a return-light imaging unit that acquires a reference image by imaging return light returning from the subject by the radiation of the illumination light from the illumination portion; and an image-correction unit that corrects the fluorescence image acquired by the fluorescence-imaging unit by using the reference image acquired by the return-light imaging unit, wherein the image-correction unit obtains a correction fluorescence image by raising a luminance value of the fluorescence image to the power of the first correction factor that is obtained such that ratios of a luminance of the fluorescence image, in which the luminance value of the fluorescence image has been raised to the power of a first correction factor, to a luminance of the reference image match each other at a plurality of different distances, and obtains a corrected fluorescence image by dividing the correction fluorescence image by the reference image.