核医学设备单光子发射计算机成像系统性能现状调查  

The investigation on equipment(SPECT) performance in nuclear medicine

作　　者：宋颖[1] 刘辉[1] 

机构地区：[1]中国疾病预防控制中心辐射防护与核安全医学所放射诊疗设备质量控制实验室辐射防护与核应急中国疾病预防控制中心重点实验室,北京100088

出　　处：《中国医学装备》2015年第10期9-11,共3页China Medical Equipment

基　　金：卫生行业科研专项(201002009)"辐射危害控制与核辐射卫生应急处置关键技术研究及其应用"

摘　　要：目的:对我国黑龙江等9个省区的51台单光子发射计算机成像系统(SPECT,含SPECT/CT)的设备进行性能测试,并将测试结果进行整理和分析,了解我国SPECT及SPECT/CT的运行现状,深入分析指标找出薄弱环节,提出改进建议。方法:根据NEMA标准和厂商指标要求对机器进行固有均匀性、固有空间线性、固有空间分辨率、最大计数率、系统平面灵敏度、系统空间分辨率以及断层空间分辨率的7项测试,并整理分析测量结果。结果:国内目前SPECT及SPECT/CT的绝大部分设备可通过检测,不合格率为9.8%,不合格指标主要集中在固有均匀性和固有空间线性。结论:坚持做好核医学设备日常质量控制,定期做好设备保养和校准,减少影响固有均匀性和固有空间线性的因素,可有效提高设备性能。Objective：Through 51 SPECT and SPECT/CT systems for performance test results of the collation and analysis, to understand the status of the operation of the SPECT and SPECT/CT systems, and in-depth analysis of indicators and find out the weak links and puts forward suggestions for improvement. Methods：According to the NEMA standards and requirements of the manufacturer, the systems have been tested on intrinsic uniformity, intrinsic spatial linearity, intrinsic spatial resolution, maximum count rate, system sensitivity, system spatial resolution and tomographic spatial resolution. Results：The results show that the majority of SPECT or SPECT/CT systems can pass the test;the failure rate is 9.80%. And the failures mainly show intrinsic uniformity and intrinsic spatial linearity. Conclusion：It is effective to improve the equipment performance by doing well in the daily quality control, regular maintenance and calibration, reducing factors that influence the inherent uniformity and inherent linear.

关 键 词：单光子发射计算机成像 固有均匀性 固有空间线性 性能测试 调查 

分 类 号：R812[医药卫生—放射医学]