| 摘要 |
PROBLEM TO BE SOLVED: To increase an examination angle and position occupied by a moving member of an X-ray apparatus around a patient in a radiographic examination by reducing the volume of a lift inside a C-arm of the C-arm X-ray apparatus. SOLUTION: A radiographic examination apparatus 10 includes a flat type rotary lift 31. For accurate operation on all the incidence angles, the apparatus is required to have complete alignment of the focal point of an X-ray tube, an element to be observed, and a detector and to keep the alignment state. The geometric essential requirements are met by a compensation system 33. The compensation system includes a cam 35 mounted to a free end of the lift. The compensation system includes a lever 36 in contact with a profile of the cam. The lever comes into contact with the detector 13 connected to the lift or a tube 12. When the lift rotates, the cam pushes the lever, and sequentially pushes the tube or the detector for alignment of the tube or the detector. COPYRIGHT: (C)2009,JPO&INPIT |
