Resumo

VILARAGUT LLANES, Juan José et al. Probabilistic safety assessment of the radiotherapy treatment with a linear accelerator for medical use. Nucleus [online]. 2010, n.48, pp. 16-20. ISSN 0864-084X.

ABSTRACT This paper presents the results of the Probabilistic Safety Assessment to the radiotherapy treatment with an Electron Linear Accelerator for Medical Use, which was conducted in the framework of the Iberian-American Forum of Radiological and Nuclear Regulatory Agencies. Potential accidental exposures during the treatment of patients, workers and members of the public were assessed, although the study was mainly focused on patients. The methodology of failure modes and effects analysis was used to define accident initiating events and methods of event tree and fault tree analysis to determine the accident sequences that may occur. After quantifying the frequency of occurrence of the accident sequences, an important analysis was carried out in order to determine the most significant events from the point of view of safety. The major contributors to risk were identified as well as the most appropriate safety recommendations to reduce it.

Palavras-chave : radiotherapy; safety; probabilistic estimation; risk assessment; hazards; radiation protection.

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