Table 1:

Mean concordance coefficients of DTI measures^a

Type of Concordance	FA	λ_‖	λ_⊥	ADC
Overall mean concordance	0.96	0.93	0.93	0.88
Cross-platform mean concordance	0.96	0.92	0.91	0.86
Siemens mean concordance	0.96	0.93	0.93	0.89
GE correlation (1 comparison only)	0.97	0.94	0.94	0.90
Longitudinal mean concordance	0.96	0.96	0.97	0.96
Across-system upgrade	0.95	0.96	0.97	0.96
After system upgrade	0.97	0.95	0.97	0.96

↵a Average Lin's concordance coefficients comparing different imaging conditions across all regions from both subjects. Each value represents the mean of the different between-magnet concordance coefficients.