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利用模糊集理论对近距离放射治疗过程中医护人员意外暴露的风险分析。

Risk analysis using fuzzy set theory of the accidental exposure of medical staff during brachytherapy procedures.

作者信息

Castiglia F, Giardina M, Tomarchio E

机构信息

Department of Nuclear Engineering, University of Palermo, Viale delle Scienze, 90128 Palermo, Italy.

出版信息

J Radiol Prot. 2010 Mar;30(1):49-62. doi: 10.1088/0952-4746/30/1/004. Epub 2010 Mar 10.

Abstract

Using fuzzy set theory, this paper presents results from risk analyses that explore potential exposure of medical operators working in a high dose rate brachytherapy irradiation plant. In these analyses, the HEART methodology, a first generation method for human reliability analysis, has been employed to evaluate the probability of human error. This technique has been modified on the basis of fuzzy set concepts to take into account, more directly, the uncertainties of the so-called error-promoting factors on which the method is based. Moreover, with regard to some identified accident scenarios, fuzzy potential dose was also evaluated to estimate the relevant risk. The results also provide some recommendations for procedures and safety equipment to reduce the occurrence of radiological exposure accidents.

摘要

本文运用模糊集理论,展示了风险分析的结果,这些分析探讨了在高剂量率近距离放射治疗辐照设备中工作的医疗操作人员的潜在暴露情况。在这些分析中,采用了HEART方法(一种用于人类可靠性分析的第一代方法)来评估人为错误的概率。该技术已根据模糊集概念进行了修改,以便更直接地考虑该方法所基于的所谓促错因素的不确定性。此外,针对一些已识别的事故场景,还评估了模糊潜在剂量以估计相关风险。结果还为减少放射性暴露事故发生的程序和安全设备提供了一些建议。

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