SPECT设备性能质量控制检测及结果分析

目的 通过对四川省9台SPECT设备的性能检测，了解四川省SPECT设备性能现状，提高对SPECT设备影像的质量控制。方法 使用SPECT性能检测模体和图像分析软件，按照国家相关标准和NEMA标准，进行系统平面灵敏度、系统空间分辨率、固有计数率特性、断层空间分辨率、固有空间分辨率、固有均匀性、固有空间微分线性等性能指标的检测。结果 7项性能指标中，固有均匀性和固有空间微分线性合格率较低，合格率仅为44.4%和33.3%，固有计数率特性与固有空间分辨率合格率为88.9%，其余各项指标合格率均为100%。结论 使用人员应具有一定的日常维护技能和意识，建立设备的质量控制措施，强调对SPECT设备性能测试的重要性，以提高临床诊断质量。

Performance quality control detection and result analysis of SPECT equipment

Objective To understand the performance status of SPECT and improve the quality control of the SPECT by testing 9 SPECT equipments in Sichuan province.Methods According to the relevant national and NEMA standards, using SPECT performance detection mode and image analysis code, the performance of the 9 SPECTs were measured including their tomographic spatial resolution, system planar sensitivity, system spatial resolution, intrinsic counting rate performance, intrinsic spatial resolution, intrinsic spatial resolution, intrinsic uniformity, intrinsic spatial differential linear.Results In the 7 performance indicators, the intrinsic uniformity and the intrinsic spatial differential linear qualification rate are relatively low, the pass rate is only 44.4% and 33.3%, intrinsic counting rate performance and the intrinsic spatial resolution pass rate are 88.9%, and the other indexes pass rate are 100%.Conclusion Users should have some daily maintenance skills and awareness, take quality control measures for equipment, emphasize the importance of performance testing for SPECT devices, so as to improve the quality of clinical diagnosis.