Quality Control of Siemens Symbia T16 SPECT/CT Detectors
HE Zhengzhong1, LIAO Guangxing1, LI Ning1, TANG Hongjun2, FU Wei2, YANG Hongyu1,YAO Zhongqiang1, XIAO Guoyou1, LI Dangsheng1
1. Department of Nuclear Medicine, The Affiliated Tumor Hospital of Guangxi Medical University, Nanning Guangxi 530021,
China; 2. Department of Nuclear Medicine, Affiliated Hospital of Guilin Medical University, Guilin Guangxi 541001, China
Abstract：Objective To analyze the measure of daily quality control (QC) of the Siemens Symbia T16 SPECT/CT detectors.
Methods Based on part data of daily QC for the Siemens Symbia T16 SPECT/CT, the nuclear detector’s PPM count rate, intrinsic
uniformity and center of rotation during working time were analyzed. Results The PPM counts rate distributed mainly in 0.3-1.1
Kcount/s within a day shift, which showed an up-trend from 8:00 to 17:00. Within a week shift, it showed an up-trend first and
down-trend late, the maximum counts occurred at the most examinations. The intrinsic uniformity (%) values of the detector 1 and
detector 2 were CFOV: 2.49±0.66, UFOV: 3.77±0.99; CFOV: 1.77±0.10, UFOV: 2.18±0.17; respectively. The performance of
detector 2 was better than the detector 1, and the intrinsic uniformity property of the detectors was improved after calibration. Center
of rotation values (mm) of the detector 1 and detector 2 (180o, 90o, 76o) were 0.116, -1.030; 5.059, -5.417; 4.430, 5.000; respectively.
Conclusion The results displayed that the nuclear detectors of the SPECT/CT were stable and effective, all the test data were in
accordance with the manufacturer standard. Regular equipment quality control, especially PPM counts rate observation and intrinsic
uniformity calibration, could found and solve the problems of radioactivity pollutant and some equipment faults in time, and maintain
the nuclear detectors in the best state.
何正中1，廖光星1，李宁1，唐红军2，付巍2，杨鸿宇1，姚忠强1，肖国有1，李党生1. 西门子Symbia T16 SPECT/CT核医学探头质量控制探讨[J]. 中国医疗设备, 2018, 33(10): 45-48.
HE Zhengzhong1, LIAO Guangxing1, LI Ning1, TANG Hongjun2, FU Wei2, YANG Hongyu1,YAO Zhongqiang1, XIAO Guoyou1, LI Dangsheng1. Quality Control of Siemens Symbia T16 SPECT/CT Detectors. China Medical Devices, 2018, 33(10): 45-48.
