[1]凌文嘉,林晓琴,龚琬玲,等.基于uEXPLORER PET-CT机的NEMA标准性能检测方法[J].中国医学物理学杂志,2022,39(9):1167-1172.[doi:DOI:10.3969/j.issn.1005-202X.2022.09.018]
　LING Wenjia,LIN Xiaoqin,GONG Wanling,et al.NEMA standard-based performance test for uEXPLORER PET-CT machine[J].Chinese Journal of Medical Physics,2022,39(9):1167-1172.[doi:DOI:10.3969/j.issn.1005-202X.2022.09.018]
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基于uEXPLORER PET-CT机的NEMA标准性能检测方法()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
39卷
期数:
2022年第9期
页码:
1167-1172
栏目:
医学信号处理与医学仪器
出版日期:
2022-11-02

文章信息/Info

Title:
NEMA standard-based performance test for uEXPLORER PET-CT machine
文章编号:
1005-202X（2022）09-1167-06
作者:
凌文嘉; 林晓琴; 龚琬玲; 陈曼珊
广东省人民医院（广东省医学科学院）医疗设备处， 广东 广州 510080
Author(s):
LING Wenjia;  LIN Xiaoqin;  GONG Wanling;  CHEN Manshan
Department of Medical Equipment, Guangdong Provincial Peoples Hospital (Guangdong Academy of Medical Sciences), Guangzhou 510080, China
关键词:
PET-CT; 空间分辨率; 灵敏度; 性能检测
Keywords:
PET-CT spatial resolution sensitivity performance test
分类号:
R179.39；R318
DOI:
DOI:10.3969/j.issn.1005-202X.2022.09.018
文献标志码:
A
摘要:
目的：通过对uEXPLORER PET-CT机中PET子系统的基本结构原理分析以及对PET机按照NEMA标准进行性能测试，从而推广PET性能检测方法，并做好质量控制工作。方法：根据NEMA标准和原厂性能要求对该设备进行空间分辨率、灵敏度、散射分数和等效噪声计数率的测试，并评价性能结果。结果：NEMA空间分辨率距离射野中心1 cm处的横向结果为3.10 mm，轴向结果为3.28 mm；距离射野中心10 cm处的横断面径向结果为3.48 mm，横断面切向结果为3.24 mm，轴向为3.49 mm。NEMA灵敏度测试视场角中心位置结果为174.279 kcps/MBq；距离视场角中心10 cm处结果为180.261 kcps/MBq。NEMA散射分数的结果为36.7%。等效噪声计数率结果为1 569.5 kcps。结论：uEXPLORER PET-CT机PET子系统的NEMA标准性能检测结果符合标准要求，检测方法操作简便，过程合理，具有较好的可操作性并利于质量控制工作的推广。
Abstract:
Abstract: Objective To popularize the PET performance testing method and promote quality control through the analysis on the basic structure and principle of PET subsystem in uEXPLORER PET-CT machine and the performance test of PET machine according to NEMA standards. Methods According to the NEMA standard and the performance requirements of the factory, the equipment was tested for spatial resolution, sensitivity, scattering fraction and equivalent noise count rate, and the obtained results were evaluated. Results The NEMA spatial resolution at 1 cm from the center of the field was 3.10 mm in transverse direction and 3.28 mm in axial direction, and that at 10 cm from the center of the field was 3.48 mm in radial direction on transverse section, 3.24 mm in tangential direction on transverse section, and 3.49 mm in axial direction.The results of NEMA sensitivity test at 0 and 10 cm from FOV center were 174.279 kcps/MBq and 180.261 kcps/MBq. The NEMA scattering fraction was 36.7%, and the equivalent noise count rate was 1 569.5 kcps. Conclusion The results of NEMA standard-based performance test for uEXPLORER PET-CT machine PET subsystem conform to the requirements of the standard. The testing method with simple operation and reasonable process has a high operability, and it is conducive to the promotion of quality control.

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备注/Memo

备注/Memo:
【收稿日期】2022-05-10 【基金项目】广东省自然科学基金（2021A1515011551） 【作者简介】凌文嘉，工程师，研究方向：医疗设备质量控制及维护保养，E-mail: 1173656253@qq.com 【通信作者】陈曼珊，高级工程师，研究方向：医疗设备质控、大型医疗设备的管理，E-mail: 13825001568@126.com
更新日期/Last Update: 2022-09-27