Radiotherapy apparatus control apparatus and specific site position measuring method

A radiotherapy system, comprising:

• a radiotherapy apparatus;
• and
• a radiotherapy apparatus control apparatus,
• wherein the radiotherapy apparatus comprises:
• a radiation irradiation unit that irradiates a therapeutic radiation;
• and
• a driving unit that changes positions of the radiation irradiation unit,
• wherein the radio therapy apparatus control apparatus comprises:
• a selecting section configured to select a plurality of template transmission images from a plurality of transmission images imaged by using radiation transmitting through a specimen;
• a template generating section configured to generate a template set including a plurality of templates based on the selected template transmission images;
• a matching degree calculating section configured to calculate a plurality of matching degrees based on each template of the template set and the plurality of transmission images;
• a display section;
• an imaging section configured to image a location measurement transmission image from the radiation transmitting through said specimen;
• a template matching section configured to perform pattern-matching of each template of said template set with said location measurement transmission image and select an optimal template which is the most similar to a portion of the location measurement transmission image, from said template set;
• a location calculating section configured to calculate a location of a specific site of said specimen based on said location measurement transmission image and said optimal template;
• a control unit configured to control the driving unit to drive the radiation irradiating unit to a position where the radiation irradiation unit irradiates the therapeutic radiation through said specific site location;
• and an irradiating section configured to control said radiation irradiating unit to irradiate the therapeutic radiation through the specific site location,
• wherein said display section displays a display image on a display unit including the plurality of transmission images which are classified on the display unit based on the plurality of matching degrees,
• wherein said selecting section selects, in response to an instruction by a user, a template transmission image from the plurality of transmission images which are classified on the display unit based on the plurality of matching degrees,
• wherein the template generating section adds a new template based on the selected template transmission image and modifies the template set,
• wherein each of the plurality of matching degrees indicates a similarity between a portion of a corresponding one of said plurality of transmission images and one template of said template set, and
• wherein said display image includes a first region and a second region,
• wherein first transmission images of said plurality of transmission images from which the matching degrees higher than a predetermined threshold have been calculated are displayed in the first region, and
• wherein second transmission images of said plurality of transmission images from which the matching degrees lower than the predetermined threshold have been calculated are displayed in the second region.