| 摘要 |
PROBLEM TO BE SOLVED: To provide an X-ray CT device with which complete solution cone beam helical reconstruction can be performed without generating useless exposure for a bed moving speed. SOLUTION: The X-ray CT device 10 produces an X-ray beam of a cone shape in the direction of the body axis of a subject P from an X-ray source 13, performs a helical scanning operation in accordance with the relative movement and relative rotational motion of the X-ray source 12 and the subject P, processes data that are collected by a data collecting unit 27, and reconstructs an image by back-projecting the processed data at a reconstruction processing unit 28. When the moving speed of the bed 17 is defined, a system controlling unit 25 determines the optimal collection condition for a two-dimensional array-type X-ray detector 16. COPYRIGHT: (C)2008,JPO&INPIT
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