Test and discussion on SPECT performance under the Chinese health industry standard WS523-2019
10.3760/cma.j.issn.0254-5098.2021.07.011
- VernacularTitle:基于WS523-2019标准对单光子发射断层成像设备进行性能检测及探讨
- Author:
Hui LIU
1
;
Zhan TAN
;
Jie YAO
;
Hezheng ZHAI
;
Zhangfan CHEN
;
Ling ZHANG
;
Feng WANG
;
Honglei LI
;
Hongtao HE
;
Wangyuan LI
;
Shuai ZHANG
;
Jianhua GENG
Author Information
1. 中国疾病预防控制中心辐射防护与核安全医学所 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
- Keywords:
Single photon emission computed tomography;
Intrinsic uniformity;
Intrinsic spatial linearity
- From:
Chinese Journal of Radiological Medicine and Protection
2021;41(7):534-538
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To discuss the problems existing in the implementation of the Chinese health industry standard WS 523-2019 by testing SPECT device.Methods:Under the WS 523-2019 standards, a total of 10 SPECT devices were tested with regard to their SPECT reconstructed spatial resolution (SRSR), system planar sensitivity (SPS), system spatial resolution (SSR), whole body system spatial resolution (WSSR), intrinsic uniformity (IU), intrinsic count rate performance (ICR), intrinsic spatial resolution (ISR) and intrinsic spatial linearity(ISL).Result:Under the requirements of WS 523-2019 standards for qualified limits, there are 3 devices with ISL unqualified and the rest of the performances qualified. The new standards basically can meet the clinical requirements and reflected the overall performance of SPECT.Conclusions:The distance between the radiation source and the surface of the detector has great influence on the spatial resolution.In the measurement of ISL, there must be a lead grid separately in the x and y directions. The lead grids with the parallel slits shall be positioned on the detector with the center slit centered on the detector. It is suggested to add rotation center in the new standards.
