新冠疫情期间医院使用部分消毒方法对外照射个人剂量监测结果的影响

Influence of disinfection methods used in hospitals on monitoring personal dose of external irradiation during COVID-19

目的 主要研究医院在疫情期间对热释光剂量计使用的消毒方法是否对外照射个人剂量监测数据造成影响,筛选适合疫情期间适合使用消毒方案。方法 2020年3月—10月选择山东省内疫情期间接待有发热门诊的医院,通过调查医院疫情期间对热释光剂量计使用的消毒方法和消毒用品的种类及使用频率,进行分组模拟实验。结果 圆片剂量计组各消毒措施测量结果平均值为0.92~0.99 mSv,对照组结果平均值为0.98 mSv,偏差不超过6%;玻璃管剂量计组中各消毒措施测量结果平均值为0.20~0.22,对照组结果平均值为0.21,偏差不超过5%。结论 本次试验结果判定常用的消毒方法对个人剂量监测结果没有影响,但有些消毒措施并不适合用于剂量计。

Objective To study whether the disinfection methods for thermoluminescence dosimeters used by major hospitals during the COVID-19 pandemic had an impact on monitoring personal dose of external irradiation,and to screen for the disinfection procedures suitable for use during the pandemic.Methods Hospitals with fever clinics during the epidemic in Shandong Province were selected from March to October 2020,we investigated the disinfection methods as well as the types and frequency of use of disinfection supplies used for thermoluminescence dosimeters during the pandemic in hospitals.Simulations were performed in experimental and control groups.Results The average doses measured by the disc dosimeter with different disinfection methods and the control group were 0.92-0.99 mSv and 0.98 mSv,respectively,and the deviation was≤6%.The average doses measured by the glass tube dosimeter with different disinfection methods and the control group were 0.20-0.22 and 0.21,respectively,and the deviation was≤5%.Conclusion The results showed that the commonly used disinfection methods had no influence on personal dose monitoring,but some disinfection measures were not suitable for dosimeters.