Fig. 2.

RapidArc whole brain radiation therapy plan with simultaneous integrated tumor boost for patient no. 7, who had 9 targets. (A) and (B) are CT images of different levels of the brain. The gray lines (arrow) show the 50% isodose line and cover 88.9% of the whole brain. The white lines (arrowhead) here reveal the 70% isodose line.