Patent ID: 9326746
Filing Date: 2016-05-03
CPC Classification: A61B

Claim Text:
1. An X-ray CT apparatus comprising: a specifying unit configured to refer to exposure dose information that associates a site in a subject radiated with X-rays for taking an X-ray image with a cumulative value of X-ray exposure doses to specify a high exposure area where a cumulative value of exposure doses is equal to or greater than a certain threshold in an imaging area in the subject; a setting unit configured to set a scan condition that allows imaging of a cross section of the imaging area and under which X-rays are not directly applied to the high exposure area or another scan condition that allows imaging of a cross section of the imaging area and under which an X-ray radiation dose directly applied to the high exposure area is reduced relative to an area other than the high exposure area; a controller configured to rotate a support that supports an X-ray tube for applying X-rays and an X-ray detector for detecting X-rays to collect data of X-rays applied from the X-ray tube and detected by the X-ray detector under the set scan condition; and a reconstruction unit configured to reconstruct a tomographic image using the data of X-rays collected under control of the controller.