| 摘要 |
PROBLEM TO BE SOLVED: To provide an irregular shadow detecting apparatus which can be applied to the whole body of a patient and can easily confirm variation with time of the shadow. SOLUTION: Tomograms for sections comprising the head, the neck, the breast, the abdomen, and the leg of the same subject which are acquired at the diverse time are stored with relating to the acquisition times. Also, irregular shadow detection algorithm for each section is memorized. Detection of the irregular shadow is carried out based on the algorithm which after the section of the tomogram is recognized, is automatically selected according to the section. In this case, the tomogram is interpolated at intervals below its slice interval to create tomograms and the tomograms at the same position which have diverse acquisition time are chosen from them to perform a differential operation. COPYRIGHT: (C)2005,JPO&NCIPI
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