| 摘要 |
PROBLEM TO BE SOLVED: To generate the three-dimensional tomographic images in a desired direction of an interested region without moving a subject by gathering projection data successively detected by a two-dimensional X-ray detection means, computing three-dimensional tomographic image data from the gathered projection data and generating the tomographic image of a desired slice position. SOLUTION: At the time of tomography, the subject is placed at a position for radiating X-rays to the interested area of the testee body between a scanning type X-ray source 2 and a two-dimensional X-ray detector 5 first. Then, the X-rays are radiated from the X-ray elements 1... of the scanning type X-ray source 2 and X-ray signals are detected in the detectors 4... of the two-dimensional X-ray detector 5. Then, digitized projection data are transferred to a data gathering part 9 and stored, and in the case that the X-rays are radiated from all the X-ray elements 1 and scanning is ended, the obtained projection data are read, three-dimensional data for which the surface of the X-ray source 2 is an upper surface and the surface of the X-ray detector 5 is a bottom surface are arithmetically processed, the slice position is specified by an indication part 15 while looking at a display part 12 and the desired tomographic image is displayed. |
