THE PRACTICE AND IMPLEMENTATION OF RADIATION MONITORING OF RADIOGRAPHERS IN TERTIARY HOSPITALS IN SOUTHEASTERN NIGERIA: A REASSESSMENT

S. Onwuzu, O. Abonyi, Sunday David, Anthony Ozioko, Chinagorom Umeugochukwu, Vincent Ugwu, I. Onwuzu
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Abstract

Background: Radiation monitoring is an essential radiation safety practice that helps to determine the cumulative radiation dose absorbed by radiographers, ensuring that it does not exceed permissible limits. Failure in practice and implementation of radiation monitoring exposes radiographers to stochastic effects of radiation exposure, increasing the hazard radiation workers are exposed to. Objective: To reassess the practice and implementation of radiation monitoring of radiographers working in south-eastern tertiary hospitals in Nigeria. Methods: This was a cross-sectional survey involving 102 radiographers from 5 selected South-Eastern tertiary hospitals. Proportional stratified random sampling was used to select the radiographers from each tertiary hospital while a semi-structured questionnaire in line with the specific objectives was used as the method for data collection. Information obtained from the respondents was related to established radiation monitoring requirements and tables were used for data presentation. Results: With a perfect response rate from the 102 respondents, personnel radiation monitoring was available to only 31% (n = 32) of the respondents with 59% (n = 19) using Thermoluminiscent dosimeters. Even though a majority (71.9%, n=23) wore their dosimeters daily, only half (50%, n = 16) of those monitored had routine device retrieval and feedback of reading at the appropriate time. Employees did not demand radiation monitoring history from the radiographers before employment and only 10% (n = 3) of those monitored claimed they had dosimetry records. Lastly, only 6.3% (n = 2) of radiographers have been on leave as a direct result of over-exposure to radiation. Conclusion: Personnel radiation monitoring practices of radiographers in South-Eastern tertiary hospitals still remain below internationally acceptable standards. Comparing the findings of this study with a similar study carried out 10 years ago, there has been little improvement in the radiation monitoring of radiographers. The management of tertiary health institutions should ensure that personnel monitoring devices are made available to radiographers, and stricter rules should be placed on the daily wearing of dosimeters.
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尼日利亚东南部三级医院放射技师辐射监测的实践和实施:重新评估
背景:辐射监测是一项重要的辐射安全措施,有助于确定放射技师吸收的累积辐射剂量,确保其不超过允许的限度。在实践和实施辐射监测方面的失败使放射技师暴露于辐射照射的随机效应中,增加了放射工作者所暴露的危害。目的:重新评价尼日利亚东南部三级医院放射技师辐射监测的实践和实施情况。方法:对东南地区5所三级医院的102名放射技师进行横断面调查。采用比例分层随机抽样的方法抽取各三级医院的放射技师,采用符合具体目标的半结构式问卷作为数据收集方法。从答复者处获得的资料与既定的辐射监测要求有关,并使用表格说明数据。结果:102名被调查者中,仅有31% (n = 32)的人进行了人员辐射监测,59% (n = 19)的人使用了热释光剂量计。尽管大多数人(71.9%,n=23)每天佩戴剂量计,但只有一半(50%,n= 16)的被监测者在适当的时间进行常规装置检索和读数反馈。雇员在受雇前没有向放射技师索取辐射监测历史,而受监测的雇员中只有10% (n = 3)声称有剂量测量记录。最后,只有6.3% (n = 2)的放射技师直接因过度接触辐射而休假。结论:东南三甲医院放射技师人员辐射监测实践仍低于国际可接受标准。将这项研究的结果与10年前进行的一项类似研究进行比较,对放射技师的辐射监测几乎没有改善。三级卫生机构的管理应确保向放射技师提供人员监测设备,并对每日佩戴剂量计制定更严格的规则。
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