treatment verification
The process of confirming accurate patient positioning and treatment delivery through imaging or measurement techniques.
Full Definition
Treatment verification encompasses all methods used to ensure that radiation therapy is delivered as planned, including patient positioning verification, dose delivery confirmation, and anatomical change monitoring. This includes pre-treatment imaging (portal imaging, CBCT), in-vivo dosimetry, and post-treatment analysis. Modern verification systems use electronic portal imaging devices (EPIDs), cone-beam CT, or other imaging modalities to compare actual patient setup with planned positioning. Treatment verification is crucial for maintaining treatment accuracy and identifying systematic or random errors that could compromise treatment outcomes.
In Context
- "Daily treatment verification showed consistent patient positioning." — Weekly physics check
- "Treatment verification protocols require imaging before each fraction." — Department procedure