2017年 · 第37卷第10期

Personal dose monitoring is an important part of occupational health management of radiation workers, an important technical means to ensure occupational health of radiation workers, and an important basis for judging radiation occupational diseases^[1]。 In order to improve the ability and level of personal dose monitoring of external exposure in radiation health technical service institutions across the country, at the commission of the Disease Control Bureau of the National Health and Family Planning Commission, the Institute of Radiation Protection and Nuclear Safety Medicine of China Center for Disease Control and Prevention organized and carried out the 2016 blind sample assessment of personal dose monitoring ability of external exposure in radiation health technical service institutions. This study analyzes and discusses the problems existing in the test reports and instrument verification/calibration certificates submitted by each radiation health technical service institution in this assessment.

Large doses of ionizing irradiation can increase the risk of cancer. However, for long-term, repeated, low-dose exposure, such as X-ray diagnostic physicians have limited knowledge of the risk of radiation carcinoma. This study estimated individual cumulative doses over 30 years in 27,000 people. A total of 1.45 million person-years of follow-up survey of cancer incidence found that the risk of solid cancer in this population increased significantly with the increase of individual cumulative dose. A radiation carcinogenic risk model was established, and the excess relative risk coefficient and excess absolute risk coefficient were estimated. The results of this study have important suggestions for the formulation of future radiation protection policies.