Table 2:

Comparison in major white matter tracts of the fractional anisotropy, mean diffusivity, and radial diffusivity of tracts crossing and not crossing WMH^a

	No. of Subjects with Tracts Crossing WMH	Crossing WMH	Not Crossing WMH	P Value
Fractional anisotropy
Corpus callosum	24	0.539 ± 0.057	0.591 ± 0.046	.002b
Cingulum	17	0.442 ± 0.076	0.448 ± 0.047	.152
Association fibers	21	0.410 ± 0.054	0.424 ± 0.034	.093
Corticospinal tract	20	0.446 ± 0.061	0.477 ± 0.032	.027
Thalamus	16	0.452 ± 0.073	0.441 ± 0.032	.130
Mean diffusivity
Corpus callosum	24	0.00085 ± 0.0001	0.000932 ± 0.0001	.053
Cingulum	17	0.0009 ± 0.0002	0.0008 ± 0.0001	.013
Association fibers	21	0.00079 ± 0.0001	0.00078 ± 0.0001	.122
Corticospinal tract	20	0.0008 ± 0.0001	0.0007 ± 0.0001	.047
Thalamus	16	0.00078 ± 0.0002	0.0008 ± 0.0001	.145
Radial diffusivity
Corpus callosum	24	0.0006 ± 0.0001	0.0006 ± 0.0001	.140
Cingulum	17	0.0007 ± 0.0002	0.0006 ± 0.0001	.001b
Association fibers	21	0.0006 ± 0.0001	0.0006 ± 0.0001	.143
Corticospinal tract	20	0.0006 ± 0.0001	0.0005 ± 0.0001	.070
Thalamus	16	0.0007 ± 0.0002	0.0006 ± 0.0001	.126

^aValues are means and SDs unless otherwise noted.

^bStatistically significant.