Figure 1

Histograms of the shifts along × (LR), Y (SI), Z (AP) for the two matching modalities and corresponding scatterplots. Distributions of the shifts (in mm) along left-right (X) (a), supero-inferior (Y) (b), and antero-posterior (Z) (c) axes for the two matching modalities (B-match and T-match), along with the scatterplots of the corresponding shifts. Bell curves are computed using mean and standard deviation of the underlining variables. Dashed lines represent the bisectors. The scatterplots shown in Figure 1a (X_T vs X_B), Figure 1b (Y_T vs Y_B), and Figure 1c (Z_T vs Z_B), have correlation coefficients of 0.94, 0.74 and 0.78, respectively, all highly statistically significant (p-value < 0.001). Note that Z_T tends to be larger than Z_B, especially for larger values of Z_B (Figure 1c).