Table 4:

Quantitative evaluation results of XCAT-to-CT registration. Dice score of 16 organs, percentage of voxels with a non-positive Jacobian determinant (i.e., folded voxels), and SSIM are evaluated for different methods. The bolded numbers denote the highest scores, while the italicized ones indicate the second highest.

Model	DSC	% of $\mid J_{\varphi }\mid \le 0$	SSIM
w/o registration	0.220±0.242	-	0.576±0.071
Affine Transformer	0.330±0.291	-	0.751±0.018
SyN	0.498±0.342	0.001±0.002	0.894±0.021
NiftyReg	0.488±0.333	0.025±0.046	0.886±0.027
LDDMM	0.519±0.265	0.006±0.007	0.874±0.031
deedsBCV	0.568±0.306	0.126±0.123	0.863 ±0.029
VoxelMorph-1	0.532±0.313	2.275±1.283	0.899±0.027
VoxelMorph-2	0.548±0.317	1.696±0.909	0.910±0.027
VoxelMorph-diff	0.526±0.330	<0.0001	0.911±0.020
CycleMorph	0.528±0.321	3.263±1.188	0.909±0.024
MIDIR	0.551±0.303	<0.0001	0.896±0.022
ViT-V-Net	0.582±0.311	2.109±1.032	0.915±0.020
PVT	0.516±0.321	2.939±1.162	0.900±0.027
CoTr	0.550±0.313	1.530±1.052	0.905±0.029
nnFormer	0.536±0.315	1.371±0.620	0.902±0.024
TransMorph-Bayes	0.594±0.313	1.475±0.857	0.919±0.024
TransMorph-diff	0.541±0.324	<0.0001	0.910±0.025
TransMorph-bspl	0.575±0.311	<0.0001	0.908±0.025
TransMorph	0.604±0.314	1.679±0.772	0.918±0.023