CT机中诊视床运动精度的检测方法和结果

摘要

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 catphanphantom was used to mesure 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 accuracymust be tested periodically to insure the stability of CT scan increment accuracy for accurate diagnoses.