Imaging geometry for image-guided radiosurgery

Abstract

A system and method for stereoscopically imaging a patient at multiple locations with a radiation treatment system using a common imaging center.

1 . An imaging system, comprising:
 a pair of x-ray sources; and   a pair of x-ray detectors to detect an x-ray beam from a corresponding one of the pair of x-ray sources, wherein at least one of the pair of x-rays sources and a corresponding one of the pair of x-ray detectors are each linearly movable from a first position to a second position to generate x-rays beams that intersect at a same imaging center when generated by the pair of x-ray sources at both the first and second positions.   
   
   
       2 . An imaging method, comprising:
 directing an x-ray beam from an x-ray source at a first position to intersect an imaging center;   linearly moving the x-ray source to a second position; and   directing another x-ray beam from the x-ray source at a the second position to intersect with the same imaging center.   
   
   
       3 . The imaging method of  claim 2 , further comprising:
 detecting the x-ray beam from the x-ray source at the first position with an x-ray detector; and   linearly moving the x-ray detector to another position to detect the other x-ray beam from the x-ray source at the second position.