Figure 5From: Application of volumetric modulated arc therapy (VMAT) in a dual-vendor environmentTypical MLC positions resulting from Dual Arc optimization. In Dual Arc VMAT, segments are grouped into arcs such that leaf travel is minimized during each rotation. In the example shown in this figure, arc 1 contains segments with leaves positioned more to the left, arc 2 to the right of the field.Back to article page