Risk Analysis of Radiotherapy Implementation Process Based on Failure Mode and Effect Analysis

Objective Providing a risk assessment method for the implementation of radiotherapy to identify possible risks in the implementation of the treatment process, and proposing measures to reduce or prevent these risks. Methods A multidisciplinary expert evaluation team was developed and the radiotherapy treatment process flow was drawn. Through the expert team, the failure mode analysis is carried out in each step of the flow chart. The results were summarized and the RPN (risk priority ordinal) score was obtained, and the quantitative evaluation results of the whole process risk were obtained. Results One hundred and six failure modes were obtained, risk assessment of RPN (20%) high risk failure model are 22 and severity S (≥ 8) high risk failure model are 27. The reasons for the failures were man-made errors or hardware and software failures. Conclusion Failure mode and effect analysis can be used to evaluate the risk assessment of radiotherapy, and it provides a new solution for risk control in radiotherapy field.