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| A field research on the ionizing radiation level and protective effect in X-ray bedside radiography |
| CHEN Biao1, CHEN Chunhui1, GAO Linfeng2, YAO Jie2, XIAO Hong2 |
1. Agency for Public Health Inspection, Municipal Health Family Planning Commission of Shanghai, Shanghai 200031 China;
2. Shanghia Municipal Center for Disease Control and Ptevention |
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Abstract Objective To study the level of ionizing radiation and the protective effects after taking intervention measures for the X-ray bedside radiography, and to provide the basis for further development of management standards.Methods A total of 15 bedside radiography sites from 12 medical institutions were randomly selected from the 9 districts in Shanghai.By simulating their daily working conditions, the dose equivalent rates at the observation points were monitored and evaluated.Results The dose equivalent rates around the bedside were all higher than the background in this study.Even at the similar exposure conditions, the dose rate largely varied with the device.The range of the dose rate varied from 3.9 μSv/h to 5 800 μSv/h without any protective screens, while the range was only from 0.095 μSv/h to 22.1 μSv/h with the use of protective screens.The higher the lead equivalent of the screen, the better the protective effect.Conclusion Different bedside X-ray equipment have different self-protective performance, which leads to the difference of radiation level in the workplace. Purchasing equipment with good protective performance, using carefully and doing well in maintenance are the important guarantees to reduce the radiation dose. The adjacent patients, medical staff and visitors are recommended to be evacuated when performing the bedside X-ray photography. For those who can not be evacuated, it is suggested to use a convenient and practicaland mobile protective screen.
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Received: 03 November 2018
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