US 12,029,921 B2
Systems and methods for patient monitoring for radiotherapy
Thomas Leroy Laurence, Jr., Benicia, CA (US); and Jayakrishnan Janardhanan, Union City, CA (US)
Assigned to RefleXion Medical, Inc., Hayward, CA (US)
Filed by RefleXion Medical, Inc., Hayward, CA (US)
Filed on Jun. 28, 2022, as Appl. No. 17/852,067.
Application 17/852,067 is a continuation of application No. 16/191,131, filed on Nov. 14, 2018, granted, now 11,369,806.
Claims priority of provisional application 62/585,772, filed on Nov. 14, 2017.
Prior Publication US 2022/0395707 A1, Dec. 15, 2022
Int. Cl. A61N 5/00 (2006.01); A61B 34/10 (2016.01); A61N 5/10 (2006.01); A61B 90/00 (2016.01)
CPC A61N 5/1049 (2013.01) [A61B 34/10 (2016.02); A61N 5/1081 (2013.01); A61B 2034/105 (2016.02); A61B 2090/367 (2016.02); A61B 2090/373 (2016.02); A61N 2005/105 (2013.01); A61N 2005/1059 (2013.01); A61N 5/107 (2013.01); A61N 2005/1074 (2013.01); A61N 2005/1076 (2013.01)] 40 Claims
OG exemplary drawing
 
33. A radiation therapy sustem comprising:
a circular gantry comprising a stationary frame and a rotatable ring coupled to the stationary frame;
a therapeutic radiation source coupled to the rotatable ring;
an imaging system coupled to the rotatable ring, wherein the imaging system comprises a reflectometer configured to acquire image data of a patient area during rotation of the ring;
a patient platform movable in the patient area;
a controller in communication with the imaging system, wherein the controller is configured to process and store the acquired image data, generate a 3-D model of a patient within the patient area at a specified time interval using images acquired during the specified time interval, compare the 3-D model of the patient at the specified time interval and a 3-D model of the patient at an earlier time interval to identify a positional difference in the 3-D models, compare the identified difference in the 3-D models with a motion envelope, and generate a notification if the identified difference exceeds the motion envelope,
wherein the motion envelope is determined based on whether the patient platform is moving or stationary, wherein the motion envelope has a first range of motion when the patient platform is moving and has a second range of motion when the patient platform is stationary.