Patent ID: 8848860
Filing Date: 2014-09-30
Classification: A61B,H05G

Abstract:
1. An X-ray CT apparatus comprising: an X-ray tube configured to apply an X-ray onto a subject; a scan device configured to rotate the X-ray tube about the subject to perform an X-ray CT scan; a first control device configured to switch an X-ray output of the X-ray tube from a first level to a second level smaller than the first level during the X-ray CT scan when the X-ray tube is placed at a first view angle, and configured to switch the X-ray output of the X-ray tube from the second level to the first level when the X-ray tube is placed at a second view angle different from the first view angle; and a second control device configured to set the first view angle and the second view angle such that an X-ray exposure dose reduced by setting the X-ray output of the X-ray tube smaller than the first level becomes even on right and left sides with respect to a reference view angle of the X-ray tube corresponding to a direction of a front of the subject.