Interpretation of IEC TR 62926-2019 (Medical electrical system – Guidelines for safe integration and operation of adaptive external beam radiotherapy systems)

This paper presents an interpretation of the latest international technical report, IEC TR 62926-2019 (Medical electrical system – Guidelines for safe integration and operation of adaptive external beam radiotherapy systems) for real-time adaptive radiotherapy. It outlines the background for the development of this report, analyzes general safety guidelines for adaptive radiotherapy systems, and discusses the key design elements required for the integration of such systems. Additionally, the paper reviews and summarizes two typical reference models for adaptive external beam radiotherapy systems. The aim is to enhance the understanding and implementation of this technical report and to support its potential adaptation into a national standardized guidance document in China.