Patent ID: 7421059

Claim:
An X-ray computer tomography apparatus having an X-ray radiation means comprising an X-ray generator and a two-dimensional X-ray image sensor, wherein an X-ray beam is radiated on an object to be examined for X-ray circulation radiation, while said X-ray generator and said two-dimensional X-ray image sensor move around said object with said object interposed therebetween, so as to keep their mutual facing positional relation, and wherein said X-ray tomography apparatus is configured to execute a first X-ray tomography for obtaining a panoramic image and configured to execute a second X-ray tomography for obtaining a computed tomography image of an interested area of said object; said X-ray computer tomography apparatus further comprising: an object holding means on which said object is set up, said object holding means being moved by an object moving means; and a processing means configured to control said object moving means to move said object holding means depending on the changing of rotary angle of said X-ray radiation means, and configured to execute said first X-ray tomography, while said X-ray radiation means rotates around said object during execution of said first X-ray tomography, with a rotaty center of said X-ray radiation means being fixed relative to said apparatus.