Fig. 3
From: Optimal collimator rotation based on the outline of multiple brain targets in VMAT
Examples of dose-volume histograms (DVH) of target volumes (a), optic chiasm (b), brain stem (c), and normal brain minus target volume (d) for multiple brain targets. The solid lines represent the DVHs of Colli-VMAT plans with an angular section of 40° (Colli-VMAT (40°)). Those of Colli-VMAT plans with angular sections of 60° (Colli-VMAT (60°)), Colli-VMAT plans with angular sections of 40° and 60° in the previous study (Colli-VMATPre (40°) and Colli-VMATPre (60°)), and Std-VMAT plans are plotted with dash-dot-dotted, dashed, dash-dotted, and dotted lines, respectively