showed a trendP < 0.10
As demonstrated in Figure 2(g) (NMI results) and Figure 2(h) (TRE results), generating landmarks on anatomical curves (no matter the landmarks were optimized or not) either significantly improved registration accuracy ( P < 0.05, paired t -test) or showed a trend towards improvement (0.05 ≤ P < 0.10) in all image pairs compared to manually selecting discreet landmarks.