Implementation of the quality assurance system into the use of significant ionizing radiation sources in radiotherapy. Recommendations

The document encompasses the following topics: (i) Overview of radiological events in radiotherapy (Definition of a radiological event; Analysis of causes of a radiological event; Examples of radiological events; Lessons learned from radiological events; Classification of risks); and (ii) Methodological guidelines (Classification of radiological events; Provisions in the event of a radiological accident; Radiological event protocol). (P.A.)