COMPUTED TOMOGRAPHY USING CONICAL RADIATION BEAM

摘要

PROBLEM TO BE SOLVED: To extend a zone for reconstituting spatial distribution by reconstituting the spatial distribution of absorption in a first sub-volume and the spatial distribution of absorption in a second sub-volume. SOLUTION: The first sub-volume V1 nearly in the state of the disk of an inspection zone 13 to be covered by radiation beams 4 and 4' and radiation beams generated at all of the other radiation source positions and the second sub-volume V2 crossing with the peak of the first sub-volume V1 are formed. Then, the spatial distribution of absorption in all the voxels arranged in the first sub-volume V1 is reconstituted by a first reconstitution algorithm. In addition, the spatial distribution of absorption in the second sub-volume V2 is reconstituted by a second reconstitution algorithm deviated from the first reconstitution algorithm.