Comparison of the risk profile in teletherapy practice of two hypothetical facilities with the risk matrix method
DOI:
https://doi.org/10.32685/2590-7468/invapnuclear.6.2022.614Keywords:
safety assessment, risk matrix method, teletherapy, radiological safety, risk
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Copyright (c) 2022 Servicio Geológico Colombiano
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Abstract
Here, the aim is to compare the risk profile of the teletherapy practice technique, three-dimensional conformal radiotherapy (3D-CRT), of two hypothetical centers with the same installation that have different human resources, specifically in the number of medical physicists, radiation oncologists and radiotherapy technologists. Center 1 has limited human resources, and center 2 has sufficient human resources. The risk matrix methodology was used with the application of the radiotherapy risk assessment system (SEVRRA in spanish) software to evaluate the risk profile of both centers. The independent verification barrier by a professional peer impacted the risk profile of center 1 with respect to center 2 in 12 initiating events with high risk, and this level of risk was null in center 2. As a complementary study, the elimination of some safety functions associated with the increased workload in center 1 was evaluated, which doubled the number of initiating events with high risk. The risk matrix as a method of analysis for teletherapy practice makes it possible to anticipate the possible events that could lead to an accident and, as a result, presents a risk profile, the analysis of which would allow the identification of technical-administrative priorities necessary for risk mitigation, guaranteeing patient safety.
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