US 11,992,359 B2
Imaging-based self-adjusting radiation therapy systems, devices, and methods
Robert T. Wiggers, Belmont, CA (US); Daryl Leung, Palo Alto, CA (US); Reto W. Filiberti, Baar (CH); Daniel Morf, Buch am Irchel (CH); Diana Kung, Sunnyvale, CA (US); and Stephen Gaudio, Mountain View, CA (US)
Assigned to VARIAN MEDICAL SYSTEMS, INC., Palo Alto, CA (US); and SIEMENS HEALTHINEERS INTERNATIONAL AG, Steinhausen (CH)
Filed by VARIAN MEDICAL SYSTEMS, INC., Palo Alto, CA (US); and Siemens Healthineers International AG, Steinhausen (CH)
Filed on May 24, 2021, as Appl. No. 17/327,856.
Application 17/327,856 is a continuation of application No. 15/782,558, filed on Oct. 12, 2017, granted, now 11,058,393.
Application 15/782,558 is a continuation of application No. 14/296,233, filed on Jun. 4, 2014, granted, now 9,844,358, issued on Dec. 19, 2017.
Prior Publication US 2021/0282735 A1, Sep. 16, 2021
Int. Cl. A61B 6/58 (2024.01); A61B 6/00 (2006.01); A61B 6/06 (2006.01); A61B 6/40 (2024.01); A61N 5/10 (2006.01)
CPC A61B 6/588 (2013.01) [A61B 6/06 (2013.01); A61B 6/4035 (2013.01); A61B 6/545 (2013.01); A61B 6/547 (2013.01); A61B 6/583 (2013.01); A61B 6/586 (2013.01); A61B 6/587 (2013.01); A61N 5/1065 (2013.01); A61B 6/585 (2013.01); A61N 2005/1054 (2013.01); A61N 2005/1056 (2013.01); A61N 2005/1061 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A non-transitory computer-readable medium containing instructions thereon for calibrating a radiation treatment device, which when executed by a processor, instruct the processor to perform the following steps:
determine one or more parameters of the radiation treatment device from one or more images received from an imaging device of the radiation treatment device, the one or more parameters relating to an output of one or more control elements of the radiation treatment device;
evaluate the one or more parameters against corresponding predefined standards; and
adjust an output of one or more control elements based on the result of the evaluating,
wherein the parameters include beam symmetry, beam flatness, beam energy, beam asymmetry, beam alignment, beam dose linearity, beam field size, beam position, beam shape, collimator position from isoplane, and the imaging device position with respect to a coordinate fame of the radiation treatment device, and
wherein the control elements include control elements that affect the one or more determined parameters,
the control elements including beam collimator devices, beam angle steering coils, beam position steering coils, shunt current sources, imaging device moving arms, beam flattening filters, beam scattering filters, dosimeters, gantry positioning devices, light sources, X-ray sources, and gun-cathode heating controls.