TABLE 2.

Coefficient of Variation (CV) and Repeatability coefficient (RC) of the DTI indices between the 6- and 13- diffusion gradient directions (top panel) compared to those using the repeated 13-diffusion gradient directions^* (bottom panel).

13–6	MG		LG		AT-S		AT-D
	CV-av	RC-av	CV-av	RC-av	CV-av	RC-av	CV-av	RC-av
λ1	2.29	0.06	0.70	0.04	0.36	0.02	1.04	0.06
λ2	1.89	0.10	4.50	0.14	4.56	0.18	4.00	0.16
λ3	2.11	0.08	6.53	0.27	3.94	0.12	3.13	0.10
FA	0.00	0.02	9.43	0.09	4.88	0.04	9.59	0.08
x-axis	1.75	4.59	1.32	2.57	0.53	1.30	0.81	1.98
y-axis	0.46	0.56	3.39	5.73	5.30	14.11	3.15	8.12
z-axis	19.24	11.34	9.64	4.06	53.45	12.06	35.72	4.59
*13–13	MG		LG		AT-S		AT-D
	CV-av	RC-av	CV-av	RC-av	CV-av	RC-av	CV-av	RC-av
λ1	1.28	0.07	3.30	0.19	1.65	0.09	1.25	0.07
λ2	1.50	0.06	1.92	0.07	3.53	0.15	4.28	0.18
λ3	3.68	0.13	4.12	0.14	3.87	0.13	3.99	0.14
FA	6.93	0.04	8.98	0.07	9.36	0.06	6.50	0.04
x-axis	3.80	8.80	2.32	6.84	4.60	11.91	3.35	7.89
y-axis	5.68	13.95	3.17	7.46	4.45	13.06	2.32	6.21
z-axis	14.24	4.92	13.87	7.90	26.21	13.25	37.41	8.75

^*The values for the repeated 13-gradients are also in Table 1 and are shown again here for ease of comparison.

CV is dimensionless percentage, the RC has the same dimensions as the corresponding parameter.