Figure 2.
(a) Delivered POP plan using manually calculated MUs recalculated with the Collapsed Cone dose algorithm showing overdosing in normal tissues and underdosing in the target. (b) The VMAT plan conforming high dose to the PTV. (c, d) The position and value of the line doses for POP (dotted) and VMAT (solid). (e) The PTV DVH plots for the POP (dotted) and VMAT (solid) plans. DVH, dose-volume histogram; MUs, monitor units; POP, parallel opposed pair; PTV, planning target volume; VMAT, volumetric modulated arc therapy.