Patent ID: 8149987
Filing Date: 2012-04-03
Classification: A61B

Abstract:
1. A radiation imaging apparatus configured to capture radiographic images, the radiation imaging apparatus comprising: a radioactive ray generating unit having a plurality of electron sources configured to irradiate a subject with a plurality of radioactive rays generated at different radiation angles; a radioactive ray detection unit configured to capture a plurality of first radiographic images based on detection of the plurality of radioactive rays that have passed through the subject at the different irradiation angles; an area specification unit configured to specify an object area using the plurality of first radiographic images captured by the radioactive ray detection unit; and a determination unit configured to determine at least one electron source to be driven from the plurality of electron sources based on the object area specified by the area specification unit, wherein a second radiographic image is captured based on radioactive rays generated by the electron source determined by the determination unit.