Fig. 2From: Evaluation of plan robustness on the dosimetry of volumetric arc radiotherapy (VMAT) with set-up uncertainty in Nasopharyngeal carcinoma (NPC) radiotherapyA schematic of transversal dose distributions in 1 treatment plan and 5 U-plans. The green volume represents PTV, the brown volume represents PTVn, and the red volume represents PTVp. The transversal dose coverage varies due to set-up uncertaintyBack to article page