Risk analysis study for patients care in radiotherapy: Learning curve and methodological evolution

To describe the evaluation of our risk mapping methodology over the past two years. Based on the FMEA (failure mode effects analysis) method, some aspects have been adapted, e.g. the concept of risk control and effort scale, some others have been introduced, e.g. the concept of residual risk management. A weekly meeting is scheduled by a multidisciplinary team in order to support the different projects. Experiments and practice have led us to upgrade our scales of gravity and detectability, identify critical points and introduce the residual risk management concept. Some difficulties with regards to the multiplicity of scenarios still prevail. Risk mapping is an essential tool in the implementation of risk quality management, specifically when the methodology is progressive and takes into consideration all the members of a pluridisciplinary team.