[1]郑晓斌,关邵翔,逯召凯,等.SPECT稳定性检测的实践探索[J].中国医学物理学杂志,2025,42(12):1632-1638.[doi:DOI:10.3969/j.issn.1005-202X.2025.12.013]
　ZHENG Xiaobin,GUAN Shaoxiang,LU Zhaokai,et al.Practical exploration of SPECT equipment stability testing[J].Chinese Journal of Medical Physics,2025,42(12):1632-1638.[doi:DOI:10.3969/j.issn.1005-202X.2025.12.013]
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SPECT稳定性检测的实践探索()

《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
42
期数:
2025年第12期
页码:
1632-1638
栏目:
医学信号处理与医学仪器
出版日期:
2025-12-29

文章信息/Info

Title:
Practical exploration of SPECT equipment stability testing
文章编号:
1005-202X（2025）12-1632-07
作者:
郑晓斌; 关邵翔; 逯召凯; 张伟光; 周超
中山大学肿瘤防治中心核医学科， 广东 广州 510060
Author(s):
ZHENG Xiaobin;  GUAN Shaoxiang;  LU Zhaokai;  ZHANG Weiguang;  ZHOU Chao
Department of Nuclear Medicine, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
关键词:
单光子发射计算机断层成像设备; 质量控制; 稳定性检测
Keywords:
Keywords: single photon emission computed tomography equipment quality control stability testing
分类号:
R318.6；R817
DOI:
DOI:10.3969/j.issn.1005-202X.2025.12.013
文献标志码:
A
摘要:
目的：探讨单光子发射计算机断层成像设备（SPECT）稳定性检测的实施策略。方法：综合参考《伽玛照相机、单光子发射断层成像设备质量控制检测规范》（WS 523-2019）、设备用户手册及配套附件，选取适宜的方法对Siemens Symbia Intevo 16双探头SPECT/CT的固有均匀性、固有空间分辨力、固有空间线性、固有最大计数率和系统平面灵敏度进行检测。结果：固有均匀性通过设备自带的质控程序检测，两探头有效视野、中心视野的积分均匀性分别为1.79%、1.26%和1.89%、1.36%，微分均匀性分别为1.27%、0.79%和1.52%、1.18%；固有空间分辨力和固有空间线性选择四象限铅栅法检测，两探头的分辨力均为4.375 mm且线性无畸变；固有最大计数率依据WS 523-2019方法检测，两探头分别为386×103 s-1、394×103 s-1；系统平面灵敏度采用简易模体结合WS 523-2019方法检测，两探头分别为98.58 s-1·MBq-1、96.41 s-1·MBq-1。所有项目的检测结果均符合WS 523-2019标准要求。结论：定期执行SPECT稳定性检测能够保障临床图像质量，但部分项目需依赖特定模体才能完成，设备使用单位应根据实际情况，选择由自身或委托有检测能力的机构进行。
Abstract:
Abstract: Objective To explore the implementation strategies for stability testing of single photon emission computed tomography (SPECT) equipment. Methods With comprehensive reference to the “Specification for testing of quality control in gamma cameras and single photon emission computed tomograph” (WS 523-2019), equipment user manual, and supporting accessories, appropriate methods were adopted to test the intrinsic uniformity, intrinsic spatial resolution, intrinsic spatial linearity, intrinsic maximum count rate, and system planar sensitivity of the Siemens Symbia Intevo 16 dual-probe SPECT/CT. Results Intrinsic uniformity was tested using the equipments built-in quality control program. For the 2 detectors, the integral uniformity of the useful field of view was 1.79% and 1.89%, and that of the central field of view was 1.26% and 1.36% and the differential uniformity of the useful field of view was 1.27% and 1.52%, and that of the central field of view was 0.79% and 1.18%, respectively. Intrinsic spatial resolution and intrinsic spatial linearity were evaluated using the quadrant bar phantom method. Both detectors achieved a resolution of 4.375 mm, with no visible linear distortion. Intrinsic maximum count rate was measured in accordance with WS 523-2019, yielding 386×103 s-1 and 394×103 s-1 for the 2 detectors, respectively. System planar sensitivity was tested using a simplified phantom combined with the method specified in WS 523-2019, resulting in 98.58 s-1[?MBq-1 and 96.41 s-1[?MBq-1 for the 2 detectors. All test results met the requirements of WS 523-2019. Conclusion Regular stability testing of SPECT equipment is essential for maintaining clinical image quality. However, certain tests can only be completed with the specific phantoms. Equipment-using departments should either conduct these tests independently or commission them to qualified testing institutions based on the specific circumstances.

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备注/Memo

备注/Memo:
【收稿日期】2025-07-18 【基金项目】广东省自然科学基金（2022A1515012327） 【作者简介】郑晓斌，技师，研究方向：核医学设备质控，E-mail: zhengxb@sysucc.org.cn 【通信作者】周超，主管技师，研究方向：核医学设备质控，E-mail: zhouchao@sysucc.org.cn
更新日期/Last Update: 2025-12-29