Patent ID: 7324622

Claim:
A radiation computed tomography apparatus comprising: a radiation detecting section for conducting a plurality of axial scans for detecting radiation passing through a region to be examined around a predefined axis of said region to be examined at different positions along said predefined axis direction; and an image reconstructing device for obtaining a plurality of sets of data for the same position in said region to be examined based on detected data acquired in said plurality of axial scans, and reconstructing data for a first tomographic image of the region to be examined at an image production position in said predefined axis direction based on said plurality of sets of data, wherein said image reconstructing device configured to combine data generated from a first axial scan of said plurality of the axial scans with data generated from a second axial scan of said plurality of the axial scans to reconstruct said first tomographic image, said image reconstructing device generating data for a combined tomographic image by assigning respective weights to said combined data and combining said weighted data for a plurality of tomographic images, and for data for said first tomographic image acquired in said plurality of axial scans at said image production position, a weight is set to zero for data for a pixel among data for pixels in a second tomographic image that lies in a region other than that in which said detected data are present in each said scan.