Method and apparatus for generating computed tomography images with offset detector geometries

摘要

In accordance with one aspect of the invention a method and apparatus for generating complete scout scans with CT imaging devices having offset detector geometries is provided. In accordance with another aspect of the invention, a method and apparatus for increasing the reconstructable field of view for CT imaging devices having offset detector geometries is provided. In accordance with another aspect of the invention, a method and apparatus for image reconstruction for region of interest and full-body imaging with CT imaging devices having offset detector geometries is provided. In accordance with another aspect of the invention, a combined x-ray and SPECT imaging system is provided.

主权项

1. A method of generating an image of an object using an imaging apparatus having a detector, comprising the steps of:
providing a first gimbal frame; providing a second gimbal frame, wherein the first gimbal frame and second gimbal frame are rotatably connected to one another; providing an x-ray radiation source mounted to the first gimbal frame; providing an x-ray radiation detector mounted to the first gimbal frame; providing at least a pair of SPECT gamma cameras mounted to the first gimbal frame; gathering a first imaging data regarding the object with the detector offset from a center of rotation in a first offset position; shifting the detector to a second position which is offset from the center of rotation, wherein the second offset position is different from the first offset position; gathering a second imaging data regarding the object with the detector in the second offset position; and using the first imaging data and the second imaging data to reconstruct an image of the object.