Patent ID: 9265409
Filing Date: 2016-02-23
CPC Classification: A61B,H04N

Claim Text:
1. A capsule medical device comprising: an excitation light source that generates excitation light for irradiating an inner wall of a body cavity; an image-capturing sensor that captures radiation generated at the inner wall of the body cavity by the excitation light emitted from the excitation light source to acquire a two-dimensional radiation image, the image-capturing sensor having variable sensitivity; and a controller that determines whether a radiation intensity in at least part of the radiation image acquired by the image-capturing sensor exceeds a predetermined threshold and to control the image-capturing sensor so as to vary the sensitivity and resolution of the image-capturing sensor, wherein the controller sets the sensitivity of the image-capturing sensor to a predetermined sensitivity as an initial setting, wherein, when the radiation intensity of the radiation image acquired by the image-capturing sensor with the initial setting exceeds the predetermined threshold, the controller disables the initial setting and performs control so as to increase the resolution of the image-capturing sensor by setting the sensitivity of the image-capturing sensor lower than the predetermined sensitivity, and wherein the controller controls the image-capturing sensor to re-acquire the radiation image with the initial setting disabled.