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| The monitoring and analysis of occupational radiation doses in interventional radiology in a hospital |
| TANG Mengjian, WU Yingyu, CHEN Zhangfan, XIE Ping, DONG ying, CHEN Faxiang, QIN Zhiying |
| Guangxi Center for Disease Prevention and Control, Nanning 530028 China |
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Abstract Objective To understand the radiation dose of the first operator in Cardiovascular Interventional Procedures in a hospital, and so as to provide reference for improving the radiation protection of operators. Methods To choose five first operator of interventional surgery on the cardiovascular medicine of a hospital in Guangxi. Under the national standard “Specifications of individual monitoring for occupational external exposure” (GBZ 128—2016), the thermoluminescent dosimeters (TLD) were used to monitor a total of 7 parts, such as the operators' eyes, left pinkie, right pinkie, left ankle, thyroid, left chest, perineum and the exposure time, surgical cases and exposure dose of each surgeon were recorded. The X-ray attenuation rate of lead protective clothing was calculated, and the shielding effect of lead protective clothing was evaluated. Results The highest dose values of each monitoring site were 2.04 mSv of ocular lens, 7.22 mSv of the left pinkie, 2.40 mSv of the right pinkie, 0.736 mSv of the left ankle, 0.204 mSv of the thyroid, 0.054 mSv of the left chest and 0.032 mSv of the perineum, respectively. The average X-ray attenuation rate of lead protective clothing in thyroid, left chest and perineum sites was ranked from high to low as follows: perineum (91.4%), left chest (85.1%), thyroid (71.2%). Conclusion It was estimated that the annual exposure dose of the lens was 24.5 mSv. Except for the lens, the annual dose of the other monitoring parts does not exceed the national standard limit. The use of personal protective equipment by the interventional surgeons can effectively reduce the exposure dose. Therefore, the awareness of personal protective equipment should be strengthened, the personal protective equipment should be used correctly, the technical level of interventional surgery should be improved, and the unnecessary irradiation should be reduced.
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Received: 04 April 2020
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