Objective To monitor the individual radiation doses of radiation workers in a hospital, and to explore its variation trend and the effect of protective measures.
Methods Thermoluminescence dosimetry method was adopted to record the individual doses received by 129 radiation workers in a selected hospital from 2009 to 2013. The data was analyzed to compare the differences in ionizing radiation among all the radiation workers of different job titles and workstations.
Results The mean annual personal effective doses ranged from 0.58 mSv/a to 1.03 mSv/a during the selected 5 years, and the median was 0.71 mSv/a. The highest mean annual effective dose was found in the interventional therapy technicians (0.75 mSv/a). All the mean annual effective doses estimated in this study were lower than the relevant limits of national standards. The mean annual personal effective dose of the nursing staff was 0.77 mSv/a, significantly higher than that of the doctors.
Conclusion The mean annual effective doses of radiation workers in the hospital are below the standard limit stipulated by the national authority, and the interventional treatment should be a key to radiation protection.
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