| 摘要 |
<p>In a CT scanning system (8) having an x-ray source (12), a plurality of x-ray detector modules (14), and a plurality of anti-scatter plate modules (22), signal instability and the associated introduction of artifacts into the reconstructed images are prevented by an alignment assembly which permits the anti-scatter plates (22) to be substantially aligned with regions of substantially constant maximum sensitivity of corresponding detectors (14). Shadows cast by the anti-scatter plates (22) fall entirely within these regions of substantially constant maximum sensitivity to radiation, thereby minimizing signal modulation due to thermal effects or relative movement of the source (12), the detectors (14) and the anti-scatter plates (22) between scans.</p> |
