Patent ID: 7672429
Filing Date: 2010-03-02
Classification: A61N

Abstract:
1. A radiotherapy device control apparatus for controlling a radiotherapy device, wherein the radiotherapy device includes: a therapeutic radiation irradiation device which radiates therapeutic radiation, an imager which generates an imager image of a subject by using radiation transmitted through the subject, a table on which the subject is arranged, and a drive device which moves a relative position of the table with respect to the therapeutic radiation irradiation device, said radiotherapy device control apparatus comprising: a reference image creation section; a transmitted image creation section; an affected area position control section; a three-dimensional data obtaining section which obtains three-dimensional data of the subject; and a two-dimensional image creation section which creates a two-dimensional image based on the three-dimensional data, wherein said reference image creation section collects a reference imager image taken by the imager, wherein said transmitted image creation section takes a transmitted imager image of the subject by the imager, wherein said affected area position control section, in a first treatment operation, judges whether or not the relative position of the table with respect to the therapeutic radiation irradiation device is appropriate based on a third position at which a characteristic point of the subject is displayed in the transmitted imager image and a fourth position at which the characteristic point is displayed in the two-dimensional image, and changes the relative position of the table by using the drive device based on the third position and the fourth position, and wherein said affected area position control section, in a second treatment operation and thereafter, judges whether or not the relative position of the table with respect to the therapeutic radiation irradiation device is appropriate based on a first position at which the characteristic point of the subject is displayed in the transmitted imager image and a second position at which the characteristic point is displayed in the reference imager image, which includes the transmitted imager image taken at a previous treatment operation, and changes the relative position of the table by using the drive device based on the first position and the second position.