| 摘要 |
An X-ray CT apparatus and method in which irradiated X-rays are effectively used, and the imaging of a wide-range scanogram can be conducted in a short time. The X-ray CT apparatus includes an X-ray tube for generating X-rays, an X-ray detector having a plurality of rows of X-ray detector elements arrayed in a slice thickness direction for detecting X-rays transmitted through a subject, a selector configured to select the row of the X-ray detector elements in the slice thickness direction necessary for generating a scanogram for a pre-set slice width, and a scanogram processing unit for generating the scanogram by using a data detected by the row of X-ray detector elements selected by the selector.
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