| 摘要 |
<p>In order to provide an x-ray imaging device that makes it possible to shift the x-ray irradiation range by means of a simple control process, thereby allowing the suppression or elimination of image degradation such as reduced quantitative characteristics or artifacts, which are caused by movement of the focal point of the x-rays, without delaying the imaging timing, a central processing device (20) causes the x-ray focal point to move to an ideal focal point position on the basis of the focal point position detected by an x-ray focal point detection device (4) (first movement), and subsequently causes an x-ray tube movement mechanism (11) to move to a preset stop position at a constant speed (second movement). In other words, subsequent to moving the focal point to an ideal position by means of the first movement, the x-ray tube movement mechanism (11) is moved by means of the second movement so as to move the focal point and thereby counteract the movement of the focal point due to cooling.</p> |
