| 摘要 |
PROBLEM TO BE SOLVED: To achieve an economical X-ray CT apparatus with a large scan FOV and an X-ray CT apparatus which attains compatibility between the large scan FOV and low exposure. SOLUTION: The X-ray CT apparatus includes: an X-ray irradiator (130) which irradiates fan-beam X-rays; a multi-channel X-ray detector (150) disposed to face the X-ray irradiator (130); a transmitted X-ray data collection device which scans a subject while rotating the X-ray irradiator (130) and the X-ray detector (150) to collect transmitted X-ray data of two or more views; a scan control device which controls the scan; and an image reconstruction device which reconstructs an image. The X-ray irradiator (130) irradiates fan-beam X-rays which are deflected to one side of the center of rotation, the X-ray detector (150) has the number of channels to cope with a spread of the fan-beam X-rays (134), and the scan control device allows the X-ray irradiator (130) and the X-ray detector to conduct a scan of at least one rotation. COPYRIGHT: (C)2010,JPO&INPIT
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