Fig. 3From: Evaluation of plan robustness on the dosimetry of volumetric arc radiotherapy (VMAT) with set-up uncertainty in Nasopharyngeal carcinoma (NPC) radiotherapyAn example of color wash schematic of dose difference bewteen the T-plan and one of the U-plan. The green, brown, and red volumes represent PTV, PTVn, and PTVp respectivelyBack to article page