Online adaptation preserved kidney SABR coverage, but daily anatomical effects were small
Adaptation preserved prescription-level D99 in all 50 fractions, while a 1-mm margin achieved 98% despite minimal daily dose perturbation.
Tag
kidney
Kidney proton SBRT needed a larger superior–inferior robustness margin
Kidney proton SBRT modeling supported 4-mm superior–inferior and 3-mm lateral/anterior–posterior positioning uncertainty with intrafraction repositioning.
Perirenal hydrogel spacer reduced bowel dose in simulated kidney SBRT
In one cadaveric RCC plan, stable 1-cm perirenal separation reduced large-bowel Dmax from 34.5 to 22.1 Gy.
Daily skin variation caused substantial target underdose in kidney proton SABR
Daily surface changes shifted proton beam depth by up to 17.4 mm and reduced accumulated target D99 by up to 24.3%.