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| Measurement and Analysis of Radiation field in the Surgical Standing Areas during ERCP |
| NIU Fei, YANG Shuhui, MIN Nan, ZHANG Lin, SONG Gang, ZHU Jianguo |
| Institute of Radiation Medicine, Shandong Academy of Medical Science, Jinan 250062 China |
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Abstract Objective To measure and evaluate the radiation dose distribution characteristics in the standing areas of the operator during endoscopic retrograde cholangiopancreatography (ERCP), and to provide radiation dose data for the protection of ERCP endoscopist.Methods The areas that ERCP operators often stay in during exposure were divided into 40 test points. Five data were measured at each test point according to different altitudes. The ambient dose equivalent rate was measured by X and gamma radiation dose rate meter.Results The ambient dose equivalent rate of the operator's standing area was 2.3~386.0 μSv/h. Generally, the closer to the center of the irradiation field, the higher the ambient dose equivalent rate around it. For the same position, the dose equivalent rate around the head, chest, abdomen and lower limb height is close, while the dose equivalent rate around the foot is slightly lower, but there were some exceptions.Conclusion The higher ambient dose rates in the standing area of ERCP surgeons are mainly obtained in the areas where the operators often stand. Therefore, effective protective measures must be taken to ensure the health and safety of the ERCP surgeons.
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Received: 15 March 2018
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