US 12,109,435 B2
Patient marking and positioning in a radiation therapy system
Sevelin Stanchev, Las Vegas, NV (US); and Stephen Thompson, Pacific Grove, CA (US)
Assigned to VARIAN MEDICAL SYSTEMS, INC., Palo Alto, CA (US)
Filed by Varian Medical Systems, Inc., Palo Alto, CA (US)
Filed on May 27, 2021, as Appl. No. 17/332,938.
Prior Publication US 2022/0379140 A1, Dec. 1, 2022
Int. Cl. A61N 5/10 (2006.01); A61B 6/00 (2006.01); A61B 6/10 (2006.01); A61B 6/46 (2024.01)
CPC A61N 5/1069 (2013.01) [A61B 6/102 (2013.01); A61B 6/465 (2013.01); A61B 6/469 (2013.01); A61B 6/548 (2013.01); A61N 5/1049 (2013.01); A61N 5/1081 (2013.01); A61N 2005/1062 (2013.01); A61N 2005/1074 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for a radiation therapy system that includes a movable couch to perform radiation therapy in a coordinate system, the method comprising:
based on X-ray images of an anatomical region of the patient that includes a target volume, reconstructing a digital volume of the anatomical region;
based on a user input indicating a location of a patient origin in the digital volume, determining one or more shift values for repositioning the patient origin at an isocenter of the radiation therapy system with respect to the coordinate system;
prior to transmitting the location of the patient origin in the digital volume to a treatment planning system, determining whether the movable couch can reposition the patient origin at the isocenter;
transmitting the location of the patient origin in the digital volume to the treatment planning system for generation of a treatment plan;
obtaining the treatment plan that is based on the location of the patient origin and is associated with the target volume;
based on the treatment plan, repositioning the movable couch so that the patient origin is disposed at the isocenter; and
while the patient origin is disposed at the isocenter, directing a treatment beam to the patient origin in accordance with the treatment plan associated with the target volume.