Figure 1. Example of dose distributions deformed via iDIR in four cases. The left panel in each column shows the dose distributions on one daily set of CT images (A, C, E, G), and the right panel shows the deformed doses via iDIR on planning CT images (B, D, F, H). The filled white, red, purple, and yellow show the clinical target volume (CTV), gross tumor volume (GTV), stomach, and duodenum, respectively. Change: Dose reduction in CTV receiving greater than 95% of the prescription dose (V95).