Physics Bucharest 2017

Remaining volume at risk (RVR)

• All normal tissue that could potentially be irradiated • Tissues not included in the CTV or not delineated as dose limiting OARs should still be specifically delineated and named the remaining volume at risk (RVR). • Dose–volume constraints applied to the RVR avoid unsuspected regions of high dose. • The absorbed dose to the RVR can be useful in estimating the risk of late effects, such as carcinogenesis.

RVR = Body – (CTV + OARs)