CT机中诊视床运动精度的检测方法和结果

Measurement Method and Related Results for CT Scan Increment Accuracy

目的 测量 CT机中诊视床运动精度的准确性。方法 阐述了测量原理 ,利用 Catphan体模对 10台CT机中诊视床运动精度进行测试。结果 10台设备中有 2台设备的诊视床运动精度不符合要求。结论 必须定期对 CT机诊视床运动精度进行测试 ,确保其稳定性 ,以利于设备的正确诊断。

Purpose: To measure scan increment accuracy. Methods: Principles of measurement are stated. The catphan phantom was used to measure scan increment accuracy for 10 sets of computed tomography, and results obtained were calculated. Results: Scan increment accuracy of 8 sets are good, but 2 of them did not meet standards. Conclusion: Scan increment accuracy must be tested periodically to insure the stability of CT scan increment accuracy for accurate diagnoses.