| Huo Binbin,Xu Zhiyong,He Dongdong,et al.Investigation on radiation doses and related influencing factors for CT adult examinations in Huai'an city[J].Chinese Journal of Radiological Medicine and Protection,2023,43(1):45-50 |
| Investigation on radiation doses and related influencing factors for CT adult examinations in Huai'an city |
| Received:April 10, 2022 |
| DOI：10.3760/cma.j.cn112271-20220410-00151 |
| KeyWords:Volume CT dosimetry index Diagnostic reference level Effective dose Collective effective dose |
| FundProject:淮安市自然科学研究计划(指导性)项目(HABZ202004) |
| Author Name | Affiliation | E-mail | | Huo Binbin | Public Health Division, Huai'an Centers for Disease Control and Prevention, Huai'an 223001, China | | | Xu Zhiyong | Public Health Division, Huai'an Centers for Disease Control and Prevention, Huai'an 223001, China | | | He Dongdong | Public Health Division, Huai'an Centers for Disease Control and Prevention, Huai'an 223001, China | | | Chen Xiaomin | Public Health Division, Huai'an Centers for Disease Control and Prevention, Huai'an 223001, China | 2440945687@qq.com |
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| Abstract:: |
| Objective To investigate the level of radiation doses to adults caused by CT examination in Huai'an, and explore the local CT diagnostic reference levels (DRLs).Methods Totally 45 CT scaners were selected to investigate the information on hospitals, equipment, scanning parameters, and radiation doses. Empirical formula were used to estimate the effective dose to adults. Nonparametric rank sum tests were used to analyze differences in radiation dose level between CT service age and hospital grade.Results A total of 3483 patients were collected, including 890 for head examinations, 890 for chest, 846 for abdomen, and 857 for lumbar spine. The 75% percentile values of CTDIvol to adult patients from CT scanning for head, chest, abdomen, lumbar spine examinations were 63.0, 12.4, 20.0 and 24.0 mGy, respectively. The 75% percentile values of DLP were 858.6, 416.0, 620.7 and 559.2 mGy·cm, respectively. The 75% percentile values of DLP for males was higher than those for females. There were significant statistical differences in radiation doses dependent on equipment service (head: U =10326.00, P<0.05; chest: U =36094.50, P<0.05; abdomen: U = 7859.00, P<0.05; lumbar spine: U =42408.00, P<0.05), and hospital grade (head: H=14.280, P<0.05; chest: H=17.85, P<0.05; abdomen: H=97.18, P<0.05; lumbar spine: H=138.94, P<0.05).Conclusions The CT radiation dose levels in Huai'an city is basically consistent with standard-reommended values, which is in line with the current status of CT equipment dose levels in the country. It is necessary to strengthen the quality control and maintenance of CT equipment. |
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