| Chen Yuzhong,Zhang Yifei,Xu Jiaying,et al.Investigation and analysis of radiation doses to pediatric patients from computed tomography examinations in Yancheng City, China[J].Chinese Journal of Radiological Medicine and Protection,2026,46(7):699-706 |
| Investigation and analysis of radiation doses to pediatric patients from computed tomography examinations in Yancheng City, China |
| Received:June 06, 2025 |
| DOI：10.3760/cma.j.cn112271-20250606-00194 |
| KeyWords:Children Computed tomography examination Radiation dose Diagnostic reference level |
| FundProject:放射医学与辐射防护国家重点实验室资助项目(GZK12024043);国家自然科学基金(82073482, 81673101);盐城市重点研发计划(社会发展)项目(YCBE202467) |
| Author Name | Affiliation | E-mail | | Chen Yuzhong | Yancheng Municipal Center for Disease Control and Prevention, Yancheng 224003, China
State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Suzhou Medical College of Soochow University, Suzhou, 215123, China | | | Zhang Yifei | Yancheng Municipal Center for Disease Control and Prevention, Yancheng 224003, China | | | Xu Jiaying | State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Suzhou Medical College of Soochow University, Suzhou, 215123, China | | | Qin Liqiang | School of Public Health, Suzhou Medical College of Soochow University, Suzhou 215123, China | | | Dong Anjun | Sheyang County Center for Disease Control and Prevention, Sheyang 224300, China | | | Zhou Xian | Yancheng Municipal Center for Disease Control and Prevention, Yancheng 224003, China | | | Wang Lu | Yancheng Municipal Center for Disease Control and Prevention, Yancheng 224003, China | | | Zhu Yu | Yancheng Municipal Center for Disease Control and Prevention, Yancheng 224003, China | | | Xu Miao | Yancheng Municipal Center for Disease Control and Prevention, Yancheng 224003, China | | | Sun Bochao | Yancheng Municipal Center for Disease Control and Prevention, Yancheng 224003, China | sbc912034@163.com |
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| Abstract:: |
| Objective To investigate the dose levels of different examination regions in pediatric patients undergoing computed tomography (CT) examinations in 12 medical institutions in Yancheng City, analyze the pediatric CT dose distribution, and provide a basis for establishing local diagnostic reference levels for pediatric CT. Methods In 2024, convenience sampling was used to select at least one medical institution performing CT diagnosis and treatment in each county (county-level city, and district) in Yancheng City. Two CT scanners that had passed the annual quality inspections were selected in each institution. Pediatric patients were divided into four age groups: 0-1, 1-, 5-, and 10-15 years. For each scanner, 20 patients per age group were surveyed for head, chest, and abdominal CT examinations. Data collected included patient demographics, CT scan parameters, volume CT dose index (CTDIvol), and dose length product (DLP). Differences in CTDIvol and DLP across age groups and hospital levels were analyzed. Results The Q3 values of CTDIvol and DLP for head CT across the four age groups were 33.22, 41.44, 51.17, and 48.36 mGy, and 522.06, 641.09, 906.20, and 831.84 mGy·cm, respectively. For chest CT, CTDIvol values were 3.80, 3.19, 4.15, and 6.64 mGy, and DLP values were 71.72, 67.35, 112.72, and 229.28 mGy·cm. For abdominal CT, CTDIvol values were 6.58, 7.08, 8.42, and 11.86 mGy, and DLP values were 167.76, 226.70, 301.16, and 522.78 mGy·cm. Statistically significant differences in CTDIvol and DLP were found among age groups for the same scan regions (head, chest, and abdomen; CTDIvol: χ2=289.92, 269.99, 167.70, P<0.05; DLP: χ2=272.34, 434.91, 247.16, P<0.05). Significant differences were also observed in head and chest CTDIvol and DLP between different hospital levels (head and chest; CTDIvol: Z=-5.23, -10.05, P<0.05; DLP: Z=-5.58, -8.67, P<0.05). Conclusions The radiation doses of head CT scans for certain age groups of children in Yancheng City are relatively high, and the Q3 values of CTDIvol and DLP for chest and abdomen are at relatively high levels. It is necessary to further optimize pediatric CT scanning protocols. |
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