Patent ID: 8481972

Claim:
A fluoroscopy apparatus comprising: an illumination section that includes a light source for radiating illumination light and excitation light onto a subject; a fluoroscopic image acquisition section that acquires a fluoroscopic image of fluorescence generated in the subject irradiated with the excitation light from the illumination section; a return-light image acquisition section that acquires a reference image of return light returning from the subject irradiated with the illumination light from the illumination section; a distance-information acquisition section that acquires information about a distance between the return-light image acquisition section and the subject; and an image correction section that corrects the fluoroscopic image acquired by the fluoroscopic image acquisition section, by using the reference image acquired by the return-light image acquisition section, wherein the image correction section is configured to calculate correction coefficients obtained by power approximation applied to the distance-information of the signal intensity of the fluoroscopic image and the reference image, the image correction section also configured to generate at least one of a correction reference image and a correction fluoroscopic image, the correction reference image generated through a power calculation applied to light intensity information of the reference image using the correction coefficient of the reference image, the correction fluoroscopic image generated through a power calculation applied to light intensity information of the fluoroscopic image using the correction coefficient of the fluoroscopic image, the image correction further configured to divide the fluoroscopic image by the correction reference image, divide the correction fluoroscopic image by the reference image or divide the correction fluoroscopic image by the correction reference image.