一种通用型SPECT性能检测系统的验证研究-固有性能部分  

A study on verifing a general performance detection system for intrinsic performance 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] YAO Shu-lin;GENG Jian-hua;CHEN Ying-mao

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5期23-26,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:检验一种通用型slit模体及SPECT质量控制通用检测系统的可靠性。方法:使用此种通用型SPECT质量控制通用检测系统和通用型slit模体对两个生产厂商的3台SPECT机型的主要固有性能进行测试(自测),并与厂商专用slit模体及软件的测试结果(厂测)进行对比。结果:1固有空间均匀性:自测与一个生产厂商的厂测结果取得了很好的一致性,与另一生产商的厂测结果差异较大,但分析差异表明自测结果更可信;2固有空间分辨率:3台设备的自测和厂测结果都取得了非常好的一致;3固有空间线性:3台设备的自测与厂测结果一致性较差,但是自测结果介于两厂商之间。结论:通用型slit模体及SPECT质量控制通用检测系统可靠,且测试结果准确。Objective:To verify the reliability of a general slit phantom and general quality control(QC)detection system for single-photon emission computed tomography(SPECT).Methods:The main intrinsic performances of three set of SPECT scanners from two manufacturers were tested by using the general QC detection system of SPECT and the general slit phantom(self-test).And then,for the purpose of comparison,these tested results were compared with the results that were tested by special slit phantom and software from manufacturers(manufacturer-test),respectively.Results:For intrinsic spatial uniformity,a good consistence was found between the self-test and one of the manufacturer-tests,while for another result of manufacturer-test,the consistency was not good.Further analysis showed that the self-test was more reliable than manufacturer-test.For intrinsic spatial resolution,all of the self-test results were consistent with the results of manufacturer-test.However,for the intrinsic spatial linearity,a poor consistence was found between the self-test results and the results of manufacturer-test,but the self-test results existed in between the two manufacturer-tests.Conclusion:The general slit phantom and general QC detection system for SPECT is reliableand the results are more accurate.

关 键 词：单光子发射计算机断层显像系统 固有性能 测试 slit模体 质量控制 

分 类 号：R812[医药卫生—放射医学]