Table 2.

Similarity of manual and automatic segmentations as indicated by dice similarity coefficients (DSC, mean ± standard deviation) for each of eight classes, i.e., anatomic forearm or carpal bones. Manual reference segmentations were performed by two radiologists, i.e., reader 1 and reader 2.

	Reader 1 vs. Reader 2		Automatic vs. Reader 1		Automatic vs. Reader 2
	Training Data	Test Data	Training Data	Test Data	Training Data	Test Data
Distal Radius	0.962 ± 0.060	0.972 ± 0.014	0.968 ± 0.061	0.969 ± 0.054	0.964 ± 0.025	0.957 ± 0.057
Distal Ulna	0.952 ± 0.044	0.954 ± 0.025	0.960 ± 0.039	0.957 ± 0.056	0.948 ± 0.029	0.964 ± 0.025
Scaphoid	0.964 ± 0.019	0.957 ± 0.022	0.970 ± 0.020	0.970 ± 0.022	0.952 ± 0.020	0.952 ± 0.024
Lunate	0.966 ± 0.016	0.964 ± 0.013	0.975 ± 0.014	0.972 ± 0.040	0.958 ± 0.018	0.954 ± 0.040
Triquetrum	0.964 ± 0.021	0.960 ± 0.019	0.969 ± 0.018	0.970 ± 0.021	0.955 ± 0.017	0.950 ± 0.026
Hamate	0.966 ± 0.018	0.964 ± 0.016	0.968 ± 0.021	0.971 ± 0.015	0.955 ± 0.022	0.956 ± 0.018
Capitate	0.969 ± 0.014	0.969 ± 0.011	0.976 ± 0.016	0.977 ± 0.017	0.963 ± 0.017	0.963 ± 0.017
Trapezium and Trapezoid	0.960 ± 0.027	0.942 ± 0.035	0.953 ± 0.026	0.924 ± 0.048	0.942 ± 0.024	0.919 ± 0.044