| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique to enable computerized tomography with the tomographic angle maintained at a fixed level or above at all times, even if no X-ray apparatus or 2D detector is operated at the same time during the imaging. SOLUTION: The X-ray imaging device includes an X-ray source with a multiple X-ray focal spots, an X-ray detector to detect the X-ray having been radiated from an X-ray focal spot and penetrated an imaging subject, and a control means to control the X-ray sources and X-ray detector. The device has a selection means to select a set of X-ray focal spots, whose X-ray crossing angle in the region of interest agrees to the prescribed angle, from among a plurality of X-ray focuses to produce images at the X-ray detector by penetrating the region of interest or the subject part irradiated, and a focus decision means to decide the X-ray focal spot existing between the selected X-ray focal spots selected by the selection means as the one to be used in the imaging operation. The control means controls so that X-ray may be irradiated from the X-ray focal spot decided by the focal spot decision means, detected by the detector and made into an X-ray image. COPYRIGHT: (C)2011,JPO&INPIT |
