Table 1.

Intra-rater and inter-rater reliability

		Intra-Rater			Inter-Rater
Measurement	Mean ± SD	ICC	p	CV (%)	ICC	p	CV (%)
CST (Right Side)
FA	0.584 ± 0.024	0.98	< 0.001	0.4	0.99	< 0.001	0.5
MD	0.718 ± 0.028	0.99	< 0.001	0.3	1.00	< 0.001	0.1
λ1	1.267 ± 0.053	0.99	< 0.001	0.3	0.99	< 0.001	0.3
λ⊥	0.443 ± 0.026	0.99	< 0.001	0.3	0.81	< 0.001	0.4
VV	4512 ± 1625	0.95	< 0.001	5.4	0.95	< 0.001	7.6
CST (Left Side)
FA	0.583 ± 0.031	1.00	< 0.001	0.2	0.99	< 0.001	0.6
MD	0.725 ± 0.158	1.00	< 0.001	0.2	0.99	< 0.001	0.4
λ1	1.250 ± 0.051	1.00	< 0.001	0.2	1.00	< 0.001	0.2
λ⊥	0.439 ± 0.039	1.00	< 0.001	0.2	0.98	< 0.001	0.9
VV	4362 ± 877	0.92	< 0.001	4.8	0.77	0.014	12.6
UNC (Right Side)
FA	0.429 ± 0.023	1.00	< 0.001	0.2	1.00	< 0.001	0.2
MD	0.813 ± 0.020	1.00	< 0.001	0.1	1.00	< 0.001	0.1
λ1	1.233 ± 0.033	0.99	< 0.001	0.2	1.00	< 0.001	0.2
λ⊥	0.603 ± 0.025	0.92	< 0.001	0.4	1.00	< 0.001	0.1
VV	3500 ± 679	0.96	< 0.001	3.0	0.98	< 0.001	3.0
UNC (Left Side)
FA	0.452 ± 0.029	1.00	< 0.001	0.3	1.00	< 0.001	0.1
MD	0.808 ± 0.032	1.00	< 0.001	0.2	1.00	< 0.001	0.1
λ1	1.246 ± 0.042	0.93	< 0.001	0.4	0.99	< 0.001	0.2
λ⊥	0.589 ± 0.035	1.00	< 0.001	0.2	0.99	< 0.001	0.8
VV	3033 ± 1166	0.96	< 0.001	5.1	0.99	< 0.001	1.9
CC (Entire)
FA	0.574 ± 0.025	1.00	< 0.001	< 0.05	1.00	< 0.001	< 0.05
MD	0.826 ± 0.047	1.00	< 0.001	< 0.05	1.00	< 0.001	< 0.05
λ1	1.441 ± 0.063	1.00	< 0.001	< 0.05	1.00	< 0.001	< 0.05
λ⊥	0.518 ± 0.044	1.00	< 0.001	< 0.05	1.00	< 0.001	< 0.05
VV	100440 ± 14585	1.00	< 0.001	0.2	1.00	< 0.001	0.3
GE
FA	0.510 ± 0.033	1.00	< 0.001	0.2	1.00	< 0.001	0.2
MD	0.836 ± 0.054	0.99	< 0.001	0.3	1.00	< 0.001	0.3
λ1	1.365 ± 0.116	0.99	< 0.001	0.3	1.00	< 0.001	0.2
λ⊥	0.566 ± 0.059	0.99	< 0.001	0.4	1.00	< 0.001	0.4
VV	13563 ± 3500	0.94	< 0.001	4.4	0.97	< 0.001	4.8
CCM
FA	0.496 ± 0.168	0.99	< 0.001	0.4	0.98	< 0.001	0.6
MD	0.676 ± 0.230	0.99	< 0.001	0.4	1.00	< 0.001	0.3
λ1	1.162 ± 0.394	0.95	< 0.001	0.7	0.99	< 0.001	0.6
λ⊥	0.433 ± 0.150	0.99	< 0.001	0.6	1.00	< 0.001	0.5
VV	4415 ± 2883	0.97	< 0.001	10.2	0.87	0.004	25.3
SP
FA	0.610 ± 0.028	1.00	< 0.001	0.2	1.00	< 0.001	0.3
MD	0.829 ± 0.048	0.99	< 0.001	0.4	1.00	< 0.001	0.2
λ1	1.492 ± 0.062	1.00	< 0.001	0.1	1.00	< 0.001	0.1
λ⊥	0.497 ± 0.047	1.00	< 0.001	0.2	1.00	< 0.001	0.3
VV	49940 ± 8767	0.98	< 0.001	2.1	0.98	< 0.001	3.3

Abbreviations: ICC=intraclass correlation coefficient, CV=coefficient of variation, CST=corticospinal tract, UNC=uncinate fasciculus, CC=corpus callosum, GE=genu, CCM=corpus callosum motor fibers, SP=splenium, FA=fractional anisotropy, MD=mean diffusivity, λ₁=axial diffusivity, λ_⊥=transverse diffusivity, VV=volume of voxels containing fibers. Units: 10⁻³ mm²/s (MD, λ₁, λ_⊥), mm³ (VV).