IMAGING METHODS FOR IMAGE-GUIDED RADIATION TREATMENT

摘要

An IGRT system and methods are described embodiments of which perform selectively integration of x-ray source arrays, dual-energy imaging, stereoscopic imaging, static and source collimation, or inverse geometry tomosynthesis imaging to acquire or track a target during radiation treatment.

主权项

1. A method of image guided radiation treatment of a treatment target within an internal target volume of a patient, comprising:
providing an image-guided radiation treatment (IGRT) apparatus having first and second x-ray tomosynthesis source-detector pairs positioned to acquire tomosynthesis projection images over first and second projection angle ranges, respectively, said first and second source-detector pairs being at a non-zero angle with respect to each other; acquiring first and second sets of tomosynthesis projection images of the target volume at distinct first and second x-ray energy levels, respectively, using said first and second x-ray tomosynthesis source-detector pairs, respectively; respectively processing said first and second sets of tomosynthesis projection images to generate respective first and second tomosynthesis reconstructed image sets of the target volume; processing, by a processing device, said first and second tomosynthesis reconstructed image sets in conjunction with each other on a locationwise basis within the target volume to generate a dual-energy processed image set; and delivering treatment radiation to the treatment target within the target volume based at least in part on said dual-energy processed image set.