TABLE 3.

Group Differences on FA Using Quantitative FT DTI

Region	OI (N = 39)			TBI (N = 49)			t	p
	Mean	SD	Range	Mean	SD	Range
Genu of CC	0.473	0.023	.422–.515	0.429	0.031	.362–.486	6.57	<.0001
Body of CC	0.457	0.023	.408–.492	0.423	0.034	.326–.475	4.78	<.0001
Right Temporal	0.428	0.026	.356–.489	0.401	0.029	.328–.461	4.02	0.0002
Left Temporal	0.424	0.023	.371–.457	0.4	0.029	.321–.469	3.61	0.0006
Right Uncinate	0.381	0.022	.324–.423	0.342	0.041	.234–.406	4.61	<.0001
Left Uncinate	0.379	0.029	.305–.430	0.348	0.029	.289–.400	3.92	0.0002
Right Frontal	0.386	0.017	.341–.425	0.358	0.026	.284–.406	5.15	<.0001
Left Frontal	0.386	0.018	.339–.413	0.355	0.024	.290–.392	5.97	<.0001
Right mPFWM	0.385	0.026	.305–.428	0.365	0.035	.281–.423	2.6	0.0116
Left mPFWM	0.382	0.031	.277–.434	0.358	0.032	.267–.414	3.1	0.0029
Right Dorsolateral Frontal	0.38	0.025	.303–.430	0.357	0.024	.282–.402	−2.7	0.0088
Left Dorsolateral Frontal	0.382	0.024	.309–.413	0.359	0.021	.304–.391	−2.47	0.0161
Right Cingulum Bundle	0.378	0.032	.310–.457	0.366	0.035	.288–.441	1.41	0.1627
Left Cingulum Bundle	0.413	0.029	.373–.491	0.392	0.032	.330–.469	2.8	0.0067
Right ILF	0.406	0.028	.348–.448	0.404	0.033	.304–.449	0.23	0.8179
Left ILF	0.409	0.032	.354–.471	0.403	0.029	.344–.453	0.75	0.4561

FA = fractional anisotropy. FT = fiber tractography. DTI = diffusion tensor imaging. OI = orthopedically injured. TBI = traumatic brain injury. SD = standard deviation. CC = corpus callosum. mPFWM = medial prefrontal white matter. ILF = inferior longitudinal fasciculus.