Patent ID: 8218716

Claim:
A radiation tomography method comprising: calculating a radiating timing, with reference to imaging timing correction data relating a plurality of gantry angles to a plurality of imaging timing correction amounts, on the basis of (i) an imaging timing at which a radiation source supported by a rotating traveling gantry is arranged at a predetermined imaging angle and (ii) an imaging timing correction amount, included in the plurality of imaging timing correction amounts, related to a gantry angle at which the rotating traveling gantry is arranged at the imaging timing; calculating, on the basis of an X-ray image obtained with a radiation radiated from the radiation source at the radiating timing, three-dimensional data of the X-ray image; and calculating a plurality of weightings related to a plurality of X-ray images to be reconstructed as the three-dimensional data on the basis of the X-ray image and the predetermined imaging angle, wherein the radiation source radiates the radiation without rotating more than once during imaging to obtain the X-ray image, wherein the plurality of X-ray images is related to a plurality of imaging angles, wherein the plurality of weightings is calculated so that, when in-unit-angle X-ray images included in the plurality of X-ray images are related to in-unit-angle imaging angles included in an unit angle range, a summation of in-unit-angle weightings related to the in-unit-angle X-ray images is even, the in-unit-angle weightings being included in the plurality of weightings, and wherein the three-dimensional data is further calculated on the basis of the plurality of weightings.