| 摘要 |
<p>A control section controls a floor rotation arm (54) fitted at one end to a floor so as to be rotatable about a substantially vertical rotation axis (Z1), a stand (53) supported by the other end of the floor rotation arm so as to be rotatable about a substantially vertical rotation shaft (Z2), a substantially C-shaped arm (51) supported by the stand, an X-ray tube (1) supported by one end of the C-shaped arm, and an X-ray detector (2) supported by the other end of the C-shaped arm so as to be rotatable about an imaging axis (Z5) passing through both the X-ray focal point of the X-ray tube and the center of a detection surface. The control section has a step of linearly moving both the X-ray tube and the X-ray detector by controlling both the rotation of the floor rotation arm and the rotation of the stand, and also has a step of maintaining the erection of an image in a display screen by controlling the rotation of the X-ray detector about its axis in association with both the rotation of the floor rotation arm and the rotation of the stand.</p> |
