Analysis of abnormal dose values from individual dose monitoring for radiation workers in medical institutions in China in 2020
10.3760/cma.j.issn.0254-5098.2021.09.010
- VernacularTitle:2020年全国医疗机构放射工作人员个人剂量监测异常数据分析
- Author:
Pinhua ZHANG
1
;
Yinping SU
;
Xiaoliang LI
;
Shiyue CUI
;
Shujie LEI
;
Quanfu SUN
;
Jianxiang LIU
Author Information
1. 中国疾病预防控制中心辐射防护与核安全医学所 辐射防护与核应急中国疾病预防控制中心重点实验室，北京 100088
- Keywords:
Individual dose monitoring;
Abnormal dose values;
Radiation workers
- From:
Chinese Journal of Radiological Medicine and Protection
2021;41(9):695-699
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To analyze distributions of dose range, occupational category, and causes of abnormal dose values from individual dose monitoring of radiation workers and to provide recommendations for improving the quality of individual monitoring data and occupational health management in medical institutions.Methods:The data of individual dose monitoring result exceeding 1.25 mSv in a single monitoring cycle, collected by Occupational Health System for Radiology Facilities’ on National Radiological Health Information Platform, was analyzed.Results:A total of 1 113 abnormal dose values were detected in 31 provinces in 2020, with an abnormal rate of 2.48‰, of which workers of diagnostic radiology and interventional radiology accounted for 68.01% and 18.78%, respectively. The dose distribution of abnormal dose values was mainly between 1.25 and 5 mSv. The abnormal dose values were mainly caused by improperly wearing or using personal dosimeters, accounting for 63.88%. Workers for whom the dose values was abnormal due to increased workload accounted for 12.32%, with an average annual individual dose of 5.14 mSv. There was no statistically significant difference in annual individual dose among radiation workers between different occupational groups( P>0.05). Conclusions:Education and training on radiation protection for radiation workers should be strengthened, and a specific and feasible system for radiation protection management, as well as a reward and punishment system, should be established in order to reduce the occurance of the improper wearing of personal dosimeters. Great attention should be paid to occupational exposure of workers in diagnostic radiology and interventional radiology, and a work shift system should be conducted to reduce individual dose levels. It is recommended that standard verification procedures for abnormal dose values from individual dose monitoring should be developed to improve the quality of individual monitoring data.
