Patent ID: 7885377

Claim:
An X-ray computed tomographic apparatus, comprising: an X-ray tube configured to generate X-rays; an X-ray detector configured to detect X-rays transmitted through a subject to be examined; a rotating mechanism unit configured to continuously rotate the X-ray tube around the subject together with the X-ray detector; a data storage unit which stores projection data based on an output from the X-ray detector; a reconstruction processing unit configured to reconstruct a first image based on a first projection data set, of the projection data stored in the data storage unit, that corresponds to a range from a first view angle to a second view angle, and to reconstruct a second image based on a second projection data set, of the projection data stored in the data storage unit, that was obtained at a different time from that of the first projection data set and that corresponds to the range from the first view angle to the second view angle, wherein the reconstruction processing unit reconstructs the first and second images by a half reconstruction method; and a display unit which displays said reconstructed first and second images.