Investigation and analysis of radiation dose levels in pediatric patients in Jiangxi Province, China
10.13491/j.issn.1004-714X.2025.05.015
- VernacularTitle:江西省部分儿童患者CT检查受照剂量水平调查与分析
- Author:
Faming CAO
1
;
Zhe HUANG
1
;
Ning ZHOU
1
;
Zhe WANG
1
;
Li TAN
1
;
Shiping CHEN
1
;
Lei DENG
1
Author Information
1. Jiangxi Provincial Institute of Occupational Disease Prevention, Nanchang 330006, China.
- Publication Type:OriginalArticles
- Keywords:
Pediatric CT;
Radiation protection;
Radiation dose;
Scan parameters
- From:
Chinese Journal of Radiological Health
2025;34(5):720-725
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the scanning parameters and radiation dose characteristics of pediatric CT examinations in Jiangxi Province, China, and to provide a basis for optimizing radiation protection in children. Methods The data of 1021 CT scans in children aged 0-15 years were collected from seven hospitals in Jiangxi Province, including one provincial hospital, four municipal hospitals, and two county-level hospitals. The data consisted of 405 head scans, 352 chest scans, and 264 abdominal scans. The scanning parameters kV, mAs, and scan length as well as the dose metrics weighted CT dose index and dose length product (DLP) were analyzed. Differences across age groups, anatomical regions, and hospitals were compared using one-way analysis of variance, and the results were compared with domestic and foreign studies. Results There were significant differences in scanning parameters and radiation doses among children of different age groups in CT examinations, and the differences between hospitals were also significant. The chest mAs and DLP in Hospital E were significantly higher than those in Hospital A, and the abdominal DLP in Hospital D was 4.3 times that of Hospital A. Compared with domestic and foreign studies, the DLP values of various anatomical regions in the < 1 year group were generally higher in the present study. The abdominal DLP in the < 1 year group (232.4 mGy·cm) was 3.3 times that in Tianjin. The head DLP in the 1-5 year group was higher than those in Germany and the United States. The chest DLP of the 11-15 year group was higher than that in Germany but lower than that in Henan Province. Conclusion There are significant differences in radiation doses received by children during CT examination in Jiangxi Province by age, anatomical region, and hospital, with some metrics exceeding domestic and international levels. Recommendations include optimizing scanning parameters (e.g., reducing mA/kV and adopting automatic exposure control technology), standardizing scan ranges, and establishing local diagnostic reference levels to mitigate radiation risks.
