| 摘要 |
<p>X-ray generation and detection apparatus for use in a computer assisted tomography system which permits relatively high speed scanning. A large X-ray tube (1) having an annular anode (3) surrounds the patient area. A movable electron gun (8) orbits adjacent to the anode. The anode directs X-rays through the patient area towards an array (22) of movable detectors. Detector subarrays (23) are synchronously movable out of the X-ray plane to permit passage of the X-ray beam as it rotates within a plane in which the detector array is disposed. </p> |
