US 11,896,851 B2
Radiation therapy system using a digital tomosynthesis process for near real-time localization
John Van Heteren, Foster City, CA (US); Liangjia Zhu, Menlo Park, CA (US); and Daniel Morf, Buch am irchel (CH)
Assigned to VARIAN MEDICAL SYSTEMS, INC., Palo Alto, CA (US)
Filed by Varian Medical Systems, Inc., Palo Alto, CA (US)
Filed on Sep. 5, 2021, as Appl. No. 17/467,270.
Application 17/467,270 is a continuation of application No. 16/452,498, filed on Jun. 25, 2019, granted, now 11,110,300.
Claims priority of provisional application 62/711,483, filed on Jul. 28, 2018.
Prior Publication US 2021/0393989 A1, Dec. 23, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61N 5/10 (2006.01); A61B 6/03 (2006.01); G06T 7/00 (2017.01); G06T 11/00 (2006.01); A61B 6/00 (2006.01)
CPC A61N 5/1081 (2013.01) [A61N 5/1067 (2013.01); A61B 6/032 (2013.01); A61B 6/541 (2013.01); A61N 5/107 (2013.01); A61N 5/1031 (2013.01); A61N 5/1038 (2013.01); A61N 5/1039 (2013.01); A61N 5/1049 (2013.01); A61N 5/1071 (2013.01); A61N 2005/1054 (2013.01); A61N 2005/1061 (2013.01); G06T 7/0012 (2013.01); G06T 11/008 (2013.01); G06T 2207/10081 (2013.01); G06T 2207/20081 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radiation treatment system comprising:
a gantry that is rotatably coupled to a drive stand and is configured to rotate about a bore of the radiation treatment system;
a treatment-delivering X-ray source mounted on the gantry and configured to direct treatment X-rays to a target volume of a patient disposed in the bore;
an imaging X-ray source mounted on the gantry;
an X-ray imager mounted on the gantry; and
a processor configured to:
cause the gantry to rotate continuously in a first direction from a first treatment delivery position to a second treatment delivery position;
while causing the gantry to rotate in the first direction from the first treatment delivery position to the second treatment delivery position, cause the imaging X-ray source to direct X-rays through the target volume and toward the X-ray imager;
receive a first set of X-ray projection images from the X-ray imager in response to the X-rays being directed toward the X-ray imager;
based on the first set of X-ray projection images, monitor the patient for a loss of breath hold; and
in response to a determination that the patient has not lost breath hold:
cause the gantry to continue to rotate to the second treatment delivery position; and
while causing the gantry to continue to rotate to the second treatment delivery position, initiate delivery of a treatment beam of the treatment-delivering X-ray source to the target volume.