Functional modeling for risk analysis in radiotherapy

Purpose. - This document presents a systematic and structured approach for functional modeling for risk analysis in radiotherapy, aiming to reconcile the need, on one hand, for a method that can be applied generally and, on the other hand, for a method that provides a highly precise model. Materials and methods. - The approach relies on new functional structuring patterns and flux analysis, derived from system engineering and knowledge engineering. Results. - The method affords strong support for the development of detailed models of the patient's process through a department of radiotherapy. Lack of structure of the actual process in a particular department may be easily identified leading to the development of specific procedures for the improvement of security. Conclusion. - Modeling approach derived from engineering may be used for functional modeling for risk analysis in radiotherapy. (authors)