| 摘要 |
PROBLEM TO BE SOLVED: To reconcile the reduction of exposure quantity and the ensurance of high image quality in X-ray computed tomographic equipment. SOLUTION: The X-ray computed tomographic equipment is equipped with a first X-ray tube bulb 111 mounted on an almost annular rotary stand, a first X-ray diaphragm device 112 variable in opening degree, a first X-ray detector 113, a second X-ray tube device 121 mounted on the rotary stand at a position shifted by a predetermined angle in a circumferential direction from the first X-ray tube bulb on the rotary stand, a second X-ray diaphragm device 112 variable in opening degree, a second X-ray detector 123, a control part 14 setting the opening degree of the second X-ray throttling device 122 so as to make the same narrower than that of the first X-ray throttling device 112 and a reconstitution unit 24 for reconstituting image data on the basis of the projection data due to the second X-ray detector 123 and the projection data due to the first X-ray detector 113.
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