Patent ID: 9149654
Filing Date: 2015-10-06
Classification: A61N

Abstract:
1. A radiotherapy device controller comprising: a visual line calculating circuit configured to calculate a visual line connecting a source of a first radiation penetrating a subject and a first position of a specific part inside the subject, the first position being shown on a transmissive image captured using the first radiation, and the visual line being different from a radiation line of the first radiation; a position calculating circuit configured to calculate a second position of the specific part based on a first point on a trajectory of the specific part and a second point on the visual line, the trajectory being described along with movement of the subject and calculated based on a plurality of transmissive images captured using radiations other than the first radiation, and the first point and the second point being selected so as to minimize a distance between the first point and the second point; and an emitting circuit configured to control a radiation emitting device that emits a therapeutic radiation, so that the therapeutic radiation penetrates at the second position of the specific part.