Radiation therapy system with gantry-mounted x-ray imaging system and supplemental x-ray imaging system

One or more non-transitory computer-readable media storing instructions that, when executed by one or more processors, cause the one or more processors to perform the steps of:

• causing a first x-ray imaging system mounted on a rotatable gantry operable to rotate about a treatment isocenter of a radiation therapy system to generate first image information for a region of patient anatomy;
• causing a second x-ray imaging system of the radiation therapy system to generate second image information for the region of patient anatomy, wherein the second x-ray imaging system is fixed in position while the rotatable gantry rotates about the treatment isocenter;
• receiving the first image information from the first x-ray imaging system and the second image information from the second x-ray imaging system;
• and
• generating a first image of the region of patient anatomy based on the first image information and a second image of the region of patient anatomy based on the second image information.

A radiation therapy system, comprising:

• a rotatable gantry operable to rotate about a treatment isocenter of the radiation therapy system;
• a treatment radiation source mounted on the rotatable gantry;
• a first x-ray imaging system mounted on the rotatable gantry;
• a second x-ray imaging system that is fixed in position while the rotatable gantry rotates about the treatment isocenter;
• and
• a controller, wherein the controller performs the steps of:
• causing the second x-ray imaging system to generate second image information for the region surrounding the treatment isocenter;
• and
• receiving the second image information from the second x-ray imaging system.