US 12,083,357 B2
Radiation therapy apparatus and control method of radiation therapy apparatus
Taizo Honda, Tokyo (JP); Tatsuya Fujisawa, Tokyo (JP); Chihiro Nakashima, Tokyo (JP); and Tomokazu Shimakura, Tokyo (JP)
Assigned to HITACHI HIGH-TECH CORPORATION, Tokyo (JP)
Appl. No. 17/272,705
Filed by Hitachi High-Tech Corporation, Tokyo (JP)
PCT Filed Oct. 24, 2019, PCT No. PCT/JP2019/041676
§ 371(c)(1), (2) Date Mar. 2, 2021,
PCT Pub. No. WO2020/174745, PCT Pub. Date Sep. 3, 2020.
Claims priority of application No. 2019-031587 (JP), filed on Feb. 25, 2019.
Prior Publication US 2021/0370094 A1, Dec. 2, 2021
Int. Cl. A61N 5/10 (2006.01)
CPC A61N 5/1037 (2013.01) [A61N 5/1039 (2013.01); A61N 5/1048 (2013.01); A61N 5/1081 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A radiation therapy apparatus, comprising:
a treatment bed configured to move a top plate, with an object to be treated placed thereon, to a predetermined treatment location;
an imaging apparatus moving to the predetermined treatment location from a direction different from a direction of movement of the top plate, and picking up an image of the object to be treated;
an irradiation apparatus, that irradiates the object to be treated, provided between the treatment bed and the imaging apparatus, that is extendable and retractable in a direction of irradiation; and
a controller coupled to the imaging apparatus and the irradiation apparatus, the controller configured to:
control the irradiation apparatus to retract to a predetermined waiting position before the imaging apparatus moves to the predetermined treatment location,
control the imaging apparatus to move to the predetermined treatment location while the irradiation apparatus is retracted, and
control the irradiation apparatus to extend to a predetermined irradiation position from the predetermined waiting position and apply a radioactive ray while in the predetermined irradiation position to the object to be treated,
wherein while the imaging apparatus is at the predetermined treatment location while the irradiation apparatus is retracted, at least a portion of the imaging apparatus is between the treatment bed and the irradiation apparatus in the direction of irradiation.