| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a radiographic apparatus obtaining an X-ray signal of a subject by irradiating the subject with X-rays output from an X-ray tube assembly, and detecting the X-rays transmitting the subject by an X-ray detector, and permitting the shape of the irradiation area of the X-rays made to fall on the X-ray detector to be trimmed into a rectangle or a square without complicating a movable mechanism of X-ray diaphragm blades even when the apparatus performs radiographing by making the X-rays obliquely fall on the X-ray detector. <P>SOLUTION: When the X-ray tube assembly rotates in a direction maintained parallel with a detection face of the X-ray detector which detects the X-rays, it makes an X-ray opening face formed by the X-ray diaphragm blades installed in an X-ray diaphragm blade device parallel with the detection face of the X-ray detector. <P>COPYRIGHT: (C)2012,JPO&INPIT |
