US 12,257,453 B2
Control of a radiotherapy device
Chris Knox, Crawley (GB)
Assigned to Elekta Limited, Crawley (GB)
Appl. No. 18/040,476
Filed by Elekta Limited, Crawley (GB)
PCT Filed Aug. 19, 2021, PCT No. PCT/EP2021/073059
§ 371(c)(1), (2) Date Feb. 3, 2023,
PCT Pub. No. WO2022/038232, PCT Pub. Date Feb. 24, 2022.
Claims priority of application No. 2012946 (GB), filed on Aug. 19, 2020.
Prior Publication US 2024/0252838 A1, Aug. 1, 2024
Int. Cl. A61N 5/10 (2006.01)
CPC A61N 5/103 (2013.01) [A61N 5/1045 (2013.01); A61N 5/1067 (2013.01); A61N 5/107 (2013.01); A61N 5/1081 (2013.01); A61N 2005/1074 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A radiotherapy device comprising:
a radiation source configured to apply radiation to a treatment region coinciding with a subject according to a treatment plan;
one or more imaging systems configured to generate image data of the subject; and
a controller communicatively coupled to the radiation source and to the one or more imaging systems, the controller being configured to:
determine, based on the image data, a relative distance between a target region of the subject and an organ at risk of the subject, wherein the treatment plan comprises a prescribed dose for the target region;
determine a buffer region around the target region based at least in part on the relative distance; and
generate a control signal for adjusting a radiotherapy treatment in response to determining, based on the image data, that the treatment region is located at least partially outside the buffer region.