| Liu Chunxu,Liu Yan,Ni Yang,Niu Zhen,Yang Shoulong,Li Chunying,Du Zhongqing,Zhang Jimian,Zeng Qiang.Investigation and analysis of CT dose to paediatric patients in Tianjin[J].Chinese Journal of Radiological Medicine and Protection,2023,43(12):997-1002 |
| Investigation and analysis of CT dose to paediatric patients in Tianjin |
| Received:April 26, 2023 |
| DOI：10.3760/cma.j.cn112271-20230426-00131 |
| KeyWords:Pediatric patient Computed tomography Radiation dose Diagnostic reference levels |
| FundProject:天津市卫生健康科技项目青年人才项目(TJWJ2021QN027);天津市医学重点学科(专科)建设项目(TJYXZDXK-066B) |
| Author Name | Affiliation | E-mail | | Liu Chunxu | Zhang Jimian, Zeng Qiang Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China | | | Liu Yan | Zhang Jimian, Zeng Qiang Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China | | | Ni Yang | Zhang Jimian, Zeng Qiang Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China | | | Niu Zhen | Zhang Jimian, Zeng Qiang Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China | | | Yang Shoulong | Zhang Jimian, Zeng Qiang Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China | | | Li Chunying | Zhang Jimian, Zeng Qiang Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China | | | Du Zhongqing | Zhang Jimian, Zeng Qiang Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China | | | Zhang Jimian | Zhang Jimian, Zeng Qiang Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China | zhangjimian@tj.gov.cn | | Zeng Qiang | Zhang Jimian, Zeng Qiang Institute for Occupational Health, Tianjin Centers for Disease Control and Prevention, Tianjin 300011, China | |
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| Abstract:: |
| Objective To study the level of CT dose to paediatric patients in Tianjin, and to provide basic data for establishing the diagnostic reference levels for paediatric patients from CT examinations in Tianjin.Methods In 2022, a general survey was carried out of the CT doses to the head, chest, abdomen and pelvis of the scanned paediatric patients in two tertiary pediatric hospitals and seven tertiary general hospitals in Tianjin. The scanned pediatric patients were divided into four age groups in terms of the age of -1, -5, -10 and -15 years, and 20 patients were investigated in each age group in each hospital. The basic information were collected on the scanned patients, CT scanning parameters, volume CT dose index (CTDIvol), dose length product (DLP), and the differences in CTDIvol and DLP on the same site among different age groups and different types of hospitals were analyzed.Results There were significant differences in CTDIvol and DLP between different age groups at the same site (head, chest, abdominal and pelvic, CTDIvol: χ2=296.51, 193.82, 291.72, P<0.001; DLP: χ2=291.22, 263.63, 344.97, P<0.001). There were significant differences in CTDIvol and DLP among different types of hospitals on the same site (head, chest, abdominal and pelvic, CTDIvol: Z=-13.13,-7.57,-15.27, P<0.001; DLP: Z=-9.07,-6.15,-11.57, P < 0.001).Conclusions The 75th percentile values of CTDIvol and DLP for pediatric head, chest, abdomen and pelvis CT scanning in tertiary hospitals in Tianjin are at a good level, and the dose on some examination sites are relatively high. Further optimization of pediatric CT scanning procedures is necessary. |
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