X-RAY CT DEVICE, VOLUME IMAGING METHOD, AND COMPUTER READABLE RECORDING MEDIUM STORING PROGRAM FOR REALIZING VOLUME IMAGING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an X-ray CT device for resolving a continuously and/or relatively prompt change of volume related to the time without lowering image quality even in the case of a relatively large cone angle. SOLUTION: In this X-ray CT device, a first sub-set of projection data collected along a continuous circular trajectory and projection data collected to a different trajectory from the circular trajectory are combined to reconfigure volume data at the time of substantially collecting a sub-set of projection data For example, a straight line trajectory or spiral trajectory can be adopted as a different trajectory from the circular trajectory. It is possible to use a second sub-set which is a sub-set of projection data collected along the continuous circular trajectory and shifted from the first sub-set. Thus, the projection data collected along the straight line, for example, promotes resolution for a continuously and/or relatively prompt change of volume to the time.