Radiation hazards during X-ray physical examinations by high-end imaging
DI Rujie1, SUN Zhenxue1, CHENG Zhongqu1, ZHANG Haixia2, LIU Hui1, LI Xinfu1, XI Ke1, TIAN Xinlei1
1.Clinical Department of Senior Officer Health Care, General Hospital of Chinese People’s Armed Police Force, Beijing 100073, China 2.Institute for Bacterial Disease Prevention and Control & Disinfection, Hebei Province Center for Disease Control and Prevention, Shijiazhuang 050021, China
Abstract：Objective To study X-ray radiation exposure among recipients of physical checkups via high-end imaging in order to reduce possible hazards.Methods The data on X-ray examinations among these subjects was analyzed, their annual dose and cumulative radiation dose were calculated, and they were grouped by the annual average dose. The correlations between the positive changes in spots of repeated irradiation and the dose of irradiation were analyzed.Results The annual average dose of X-ray irradiation among these subjects was 4.59 mSv, and reached the medium dose level (3-20 mSv). 116 of these subjects received repeated CT examination at the same spot. Among the 34 subjects with positive changes, 25(73.53%) were in the middle radiation dose group and 7 in the low radiation dose group. There was no statistically significant difference in positive or negative rates of detection between the two groups. There was also no statistically significant difference in gender or age between the low dose radiation group (43.33%) and middle dose radiation group (56.67%).Conclusions The cumulative radiation dose of X-ray is somewhat large in this population. Many people have been subjected to unnecessary CT examinations. How to protect this population from radiation hazards is of great significance.
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2017, Vol. 28 
