Designed with EdrawMax, this template is a fault tree diagram analyzing the root causes of "Dose delivery error" in radiation therapy. The top - level event branches into contributing factors such as "MLC leaves not in the right place" and "Required position not reached". Further decomposition reveals sub - causes like "Electrical problem", "Software problem", and "Motor failure". Logical gates (OR gates) connect events, indicating that any single cause can trigger the subsequent failure. The diagram also includes human - related factors like "Physicist/operator error" and external factors such as "Power supply problem". This visual guide aids in risk assessment, maintenance planning, and improving the reliability of radiation therapy systems by systematically identifying failure paths.
