RTOG criteria
Also written as: RTOG — Radiation Therapy Oncology Group
Standardized grading system developed by the Radiation Therapy Oncology Group for assessing radiation-induced toxicity and treatment response.
Full Definition
RTOG criteria represent a comprehensive grading system established by the Radiation Therapy Oncology Group to evaluate acute and late effects of radiation therapy, as well as tumor response to treatment. In neurosurgical oncology, these criteria are essential for documenting radiation-induced complications such as brain necrosis, cognitive changes, and neurological deficits. The system typically uses grades 0-4 or 0-5, with higher grades indicating more severe toxicity. RTOG criteria enable standardized reporting across institutions and clinical trials, facilitating comparison of treatment outcomes and side effect profiles. They are particularly important when evaluating the safety and efficacy of various radiation delivery techniques.
Usage
Usage note: Always written in capitals; criteria should be plural when referring to the complete system.
In Context
- "The patient developed Grade 2 radiation necrosis according to RTOG criteria." — follow-up assessment
- "Treatment response was evaluated using RTOG criteria at 3-month intervals." — clinical trial protocol