Figure 11.

Registration performance of the 14 registration paths shown in Fig. 10 compared to unregistered images (path 0). (a) Performance in the presence of large motion artifacts (judged “large” by qualitative assessment of slouch, respiratory motion, and∕or cardiac motion artifacts in the unregistered DE images). (b) Performance in the presence of slight motion artifacts (also assessed qualitatively). The diagonal path (#11, marked in black) generally yielded the most robust performance regardless of motion severity.