Fig. 4
From: Optimal collimator rotation based on the outline of multiple brain targets in VMAT
For a representative patient case (patent 6), calculated dose distribution in the axial, coronal, and sagittal views of the volumetric modulated arc therapy (VMAT) plans with the optimal collimator angles with angular sections of 40° in the previous study (Colli-VMATPre (40°)) (a) and this study (Colli-VMAT (40°)) (b). The target volume of Colli-VMATPre (40°) and Colli-VMAT (40°), which was the planning target volume (PTV), is shown in a green color