METHOD AND APPARATUS FOR CORRECTING CONE-BEAM MULTI- SLICE TYPE CT

摘要

PROBLEM TO BE SOLVED: To improve the image quality and practicality in multi-slice type computerized tomography(CT) imaging. SOLUTION: The method comprises a process of moving an X-ray source along the orbit, a process of irradiating an x-ray cone beam from the moving X-ray source toward a curved detector through an object, and a process of determining the portion of a segment along the orbit to be contributed to a boxel in the restructured volume of the object. The process of determining the portion to be contributed includes compensation of the portion to be contributed in the curvature of the detector and the shape of the X-ray cone beam.