Patent ID: 7764762
Filing Date: 2010-07-27
Classification: A61B

Abstract:
1. A radiation CT apparatus, comprising: a radiation source that emits radiation in a conical manner; and a detecting panel for detecting the radiation; the radiation source and the detecting panel being provided facing each other with an axis of rotation that passes though a predetermined position therebetween; radiation images of a subject placed at the predetermined position being imaged while rotating the radiation source and the detecting panel about the axis of rotation; and the position of at least one of the radiation source and the detecting panel being movable in the direction that they face each other in; further comprising: region of interest information obtaining means, for obtaining region of interest information that represents the size and position of a region of interest within the radiation images, employing the radiation images of the subject; position calculating means, for calculating positions for the radiation source and the detecting panel along the direction that they face each other in that enable appropriate radiation imaging of the region of interest, employing the region of interest information; and moving means, for moving the radiation source and the detecting panel to the positions calculated by the position calculating means.