Table 4.

Impact of Tract Segmentation Method on Diffusion Measures^*

Region	FA	Trace	Radial Diffusivity	Axial Diffusivity
L CB	1.19 ± 1.2	0.49 ± 1.2	0.05 ± 0.3	0.03 ± 0.8
R CB	1.73 ± 2.3	0.67 ± 1.7	0.11 ± 0.4	0.21 ± 0.9
Genu	1.57 ± 1.8	0.25 ± 1.3	0.49 ± 0.7	0.48 ± 0.8
L IFOF	0.22 ± 1.6	0.84 ± 1.6	0.11 ± 0.4	0.76 ± 1.8
R IFOF	0.89 ± 1.4	0.36 ± 2.8	0.15 ± 0.7	0.88 ± 2.9
L UF	2.37 ± 2.3	1.22 ± 2.0	0.72 ± 0.5	1.87 ± 1.7
R UF	0.28 ± 1.3	0.87 ± 0.7	0.21 ± 0.4	0.62 ± 0.8
L ILF	1.72 ± 2.1	1.13 ± 2.7	0.69 ± 0.8	1.29 ± 1.3
R ILF	2.61 ± 2.9	1.20 ± 2.9	0.91 ± 0.9	1.65 ± 0.9
L AF	2.13 ± 2.4	0.50 ± 1.7	0.75 ± 1.3	1.07 ± 2.7
R AF	2.42 ± 1.8	0.68 ± 2.3	0.86 ± 1.7	0.97 ± 2.1
L CST	0.69 ± 1.7	0.03 ± 1.9	0.10 ± 0.4	0.08 ± 1.1
R CST	0.82 ± 1.9	1.80 ± 1.6	0.12 ± 0.6	0.29 ± 0.8
All regions**	1.43 ± 2.2	0.77± 1.9	0.41 ± 0.7	0.78 ± 1.3

^*Mean and SD of the percent difference between the clustering and MROI methods.

^**The value for ‘All regions’ is simply the mean of the all the regional means.