Table 1.

Mean z-deviation (Δz) and slice extraction accuracy for different tolerance margins obtained with the cross-validated nnU-Net ensemble for the hold-out test set and for the additional test data from center A and center B

Slice extraction	Mean, Δz [mm]	Accuracy, Δz = 0 mm	Accuracy, Δz <  = 5 mm	Accuracy, Δz <  = 10 mm
Hold-out	2.27 ± 7.08	0.79	0.96	0.96
Center A	3.35 ± 4.10	0.51	0.88	0.99
Center B	2.19 ± 6.70	0.85	0.96	0.96