Table 2.

Mean absolute landmark distances for the three groups after rigid and after deformable registration. $\text{Mean}\hspace{0.17em}\pm \hspace{0.17em}\text{SD}$ of the mean absolute landmark distances of the patients in each group are shown after rigid, Demons, and Morphons registration. Also the numbers for the best deformable registration for each patient are shown. The p‐value results from comparing the absolute landmark distances after rigid registration to the distances after the best deformable registration

	N	Rigid ($mean\pm SD$)	Demons ($mean\pm SD$)	Morphons ($mean\pm SD$)	Best Deformable Registration ($mean\pm SD$)	p‐value Rigid vs. Best
Group 1	7	$9.5\pm 2.1\hspace{0.17em}\text{mm}$	$5.4\pm 1.7\hspace{0.17em}\text{mm}$	$4.4\pm 1.8\hspace{0.17em}\text{mm}$	$3.8\pm 1.2\hspace{0.17em}\text{mm}$	$<0.001$
Group 2	7	$5.6\pm 1.3\hspace{0.17em}\text{mm}$	$4.9\pm 1.1\hspace{0.17em}\text{mm}$	$4.8\pm 1.5\hspace{0.17em}\text{mm}$	$4.5\pm 1.1\hspace{0.17em}\text{mm}$	0.093
Group 3	6	$13.6\pm 3.2\hspace{0.17em}\text{mm}$	$8.5\pm 2.6\hspace{0.17em}\text{mm}$	$10.2\pm 2.7\hspace{0.17em}\text{mm}$	$8.0\pm 2.2\hspace{0.17em}\text{mm}$	0.025

$\mathrm{N}=\text{number of patients per group}$.