Table 1.

DSC results with standard deviations for the pre-trained baseline model without domain adaptation, transductive domain adaptation (TDA), and unsupervised FIRST method for two-way validation: from IBSR to MICCAI 2012; from MICCAI 2012 to IBSR-SIEMENS; and from MICCAI 2012 to IBSR-GE.

	IBSR to MICCAI 2012			MICCAI2012 to IBSR-SIEMENS			MICCAI 2012 to IBSR-GE
	Baseline	TDA	FIRST	Baseline	TDA	FIRST	Baseline	TDA	FIRST
Tha.L	0.301 ± 0.195	0.843 ± 0.028*	0.889 ± 0.017	0.842 ± 0.029	0.873 ± 0.023	0.892 ± 0.022	0.681 ± 0.102	0.699 ± 0.111*	0.894 ± 0.015
Tha.R	0.085 ± 0.203	0.857 ± 0.022*	0.890 ± 0.018	0.823 ± 0.026	0.886 ± 0.016	0.889 ± 0.014	0.701 ± 0.108	0.736 ± 0.124*	0.882 ± 0.011
Cau.L	0.867 ± 0.052	0.861 ± 0.057	0.797 ± 0.117	0.862 ± 0.020	0.887 ± 0.014	0.805 ± 0.028	0.801 ± 0.074	0.836 ± 0.046*	0.771 ± 0.047
Cau.R	0.873 ± 0.040	0.865 ± 0.044	0.837 ± 0.046	0.860 ± 0.011	0.864 ± 0.015	0.892 ± 0.016	0.828 ± 0.029	0.834 ± 0.025	0.860 ± 0.026
Put.L	0.888 ± 0.023	0.893 ± 0.022	0.860 ± 0.080	0.891 ± 0.024	0.888 ± 0.032	0.872 ± 0.016	0.852 ± 0.046	0.833 ± 0.053	0.867 ± 0.023
Put.R	0.887 ± 0.023	0.889 ± 0.025	0.876 ± 0.060	0.897 ± 0.008	0.899 ± 0.013	0.875 ± 0.011	0.842 ± 0.056	0.825 ± 0.064	0.883 ± 0.009
Pal.L	0.629 ± 0.083	0.785 ± 0.039*	0.815 ± 0.060	0.671 ± 0.048	0.737 ± 0.012	0.827 ± 0.034	0.557 ± 0.189	0.565 ± 0.182	0.802 ± 0.031
Pal.R	0.654 ± 0.058	0.768 ± 0.055*	0.799 ± 0.088	0.732 ± 0.053	0.785 ± 0.024	0.808 ± 0.055	0.574 ± 0.174	0.586 ± 0.175	0.809 ± 0.028
Hip.L	0.800 ± 0.025	0.814 ± 0.029*	0.809 ± 0.014	0.804 ± 0.044	0.813 ± 0.045	0.811 ± 0.036	0.783 ± 0.037	0.797 ± 0.039	0.804 ± 0.015
Hip.R	0.832 ± 0.019	0.839 ± 0.022*	0.810 ± 0.022	0.817 ± 0.049	0.828 ± 0.053	0.826 ± 0.034	0.795 ± 0.032	0.809 ± 0.031	0.812 ± 0.014
Amy.L	0.672 ± 0.041	0.685 ± 0.047	0.721 ± 0.054	0.630 ± 0.041	0.686 ± 0.053	0.736 ± 0.090	0.540 ± 0.130	0.601 ± 0.103*	0.745 ± 0.050
Amy.R	0.644 ± 0.056	0.671 ± 0.053*	0.707 ± 0.052	0.609 ± 0.074	0.637 ± 0.090	0.756 ± 0.08	0.455 ± 0.097	0.520 ± 0.088*	0.758 ± 0.055
Acc.L	0.695 ± 0.053	0.707 ± 0.060	0.699 ± 0.081	0.694 ± 0.050	0.744 ± 0.036	0.742 ± 0.069	0.646 ± 0.089	0.658 ± 0.084	0.655 ± 0.099
Acc.R	0.697 ± 0.067	0.709 ± 0.070	0.678 ± 0.089	0.634 ± 0.036	0.676 ± 0.042	0.725 ± 0.063	0.582 ± 0.081	0.595 ± 0.073	0.691 ± 0.082
Avg.	0.680 ± 0.038	0.799 ± 0.087*	0.799 ± 0.094	0.769 ± 0.107	0.800 ± 0.094*	0.818 ± 0.073	0.688 ± 0.159	0.707 ± 0.147*	0.802 ± 0.083

Structure acronyms are: Tha.L, left thalamus; Tha.R, right thalamus; Cau.L, left caudate; Cau.R, right caudate; Put.L, left putamen; Put.R, right putamen; Pal.L, left pallidum; Pal.R, right pallidum; Hip.L, left hippocampus; Hip.R, right hippocampus; Amy.L, left amygdala; Amy.R, right amygdala; Acc.L, left accumbens; Acc.R, right accumbens; Avg., average value. Significant improvements after domain adaptation over baseline are indicated with “*” and maximum DSC values are shown in bold.