Patent ID: 11896851
Assignee: VARIAN MEDICAL SYSTEMS, INC.
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 0:
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.