Monte Carlo–based optimization of CTV‐to‐PTV margins for image‐guided VMAT prostate radiotherapy
Quan Chen, Ali Ammar, Nathan Y. Yu, Libing Zhu et autres
BACKGROUND: The van Herk margin formula, derived for 3-D conformal radiotherapy with a uniform 3.2 mm dose penumbra and no intrinsic dose buffer, remains widely used to design CTV-to-PTV expansions in contemporary image-guided prostate radiotherapy. However, coplanar VMAT techniques often feature broader …
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Medical Physics