Figure 6.
Examples of combined dose distributions from two lateral-opposed beams for Patient 5: (a) planned on the pre-treatment (simulation) CT set, and recalculated (b,c) on in-room CT data with evident variation in the rectal filling, and set-up of the skin surface, and femora. Plot (d) shows the overlay of the 98% iso-dose contours, as in Figure 5.