Figure 3.

Motion trajectories of extracted from sagittal MRI time series from Patients number 1 and number 2 (Figures 1(b) and 1(d), resp.). ((a) and (c)) Mean-subtracted motion trajectories of the tumor centroid and the dome of the diaphragm for Patient number 1 and Patient number 2, respectively. ((b) and (d)) Trajectories of the tumor centroid and 15 points on the tumor boundary for Patient number 1 and Patient number 2, respectively.