一种通用型SPECT性能检测系统的验证研究——系统性能部分  

Verification of a general SPECT performance detection system on system performance part of SPECT

作　　者：姚树林[1] 耿建华[2] 陈英茂[1] 徐白萱[1] 刘亚强[3] 马天予[3] 

机构地区：[1]解放军总医院核医学科,北京100853 [2]中国医学科学院肿瘤医院核医学科,北京100021 [3]清华大学工程物理系,北京100084

出　　处：《中国医学装备》2017年第6期37-40,共4页China Medical Equipment

基　　金：科技部国际科技合作项目(2009DFA32960)"PET-CT脑分子影像研究与应用平台及针灸中枢机理探讨"

摘　　要：目的:检验一种单光子发射断层显像系统(SPECT)质量控制通用模体套装及SPECT质量控制通用检测系统的可靠性。方法:使用SPECT质量控制通用检测系统和通用模体套装对两个厂商的3台SPECT设备的主要系统性能进行测试(自测),并与厂商专用模体及软件的测试结果(厂测)进行对比。结果:(1)系统平面灵敏度,3台设备的自测和厂测结果一致性很好,相对偏差在0.2%以下;(2)系统空间分辨力,3台设备的自测和厂测结果一致性很好,相对偏差在0.2%以下;(3)断层空间分辨力,3台设备的自测和厂测结果一致性很好,相对偏差在5%以下;(4)全身空间分辨力,3台设备的自测和厂测结果一致性很好,相对偏差在0.2%以下。结论:SPECT质量控制通用模体套装及SPECT质量控制通用检测系统可靠,测试结果准确。Objective： To test the reliabilities of general software and phantom suite of single-photon emission computed tomography （SPECT） quality control and the general testing system of SPECT quality control. Methods： The main system performances of 3 SPECT equipments from 2 manufacturers were tested by using general testing system of SPECT quality control and general QC software and phantom suite（self-test）. And then to compare these results with those results of special software and phantom suite from manufacturers（manufacturer-test）. Results： （1）System planar sensitivity： There was a very good consistence between the self-test and the manufacturer-test for the three SPECT equipments, and the relative deviations between the self-test and the manufacturer-test for all of them were below 0.2%. （2）System spatial resolution： There was a very good consistence between the self-test and the manufacturer-test for the three SPECT equipments, and the relative deviations of them also were below 0.2%. （3）Tomography spatial resolution： There was a very good consistence between the self-test and the manufacturer-test for the three SPECT equipments, and the relative deviations of them were below 5%. （4）Spatial resolution for whole body： There was a very good consistence between the self-test and the manufacturer-test for the three SPECT equipments, and the relative deviations of them were below 0.2%. Conclusion： The general software and phantom suite of SPECT quality control and the general testing system of SPECT quality control are reliable and the testing results are accuracy.

关 键 词：单光子发射计算机断层显像系统 系统性能 测试 质量控制 

分 类 号：R812[医药卫生—放射医学]