Table 1.
White matter tracts that yielded a statistically significant difference between patients with concussion and control subjects in each DTI metric.
| Patient mean | Control mean | |t| | df | p | |
|---|---|---|---|---|---|
| FA | |||||
| Middle cerebellar peduncle | 0.563 | 0.598 | 5.92 | 35.7 | <0.0001 |
| Cortico-spinal tract, R | 0.616 | 0.579 | 4.30 | 28.6 | 0.0002 |
| Splenium of corpus callosum | 0.819 | 0.801 | 3.87 | 45.4 | 0.0003 |
| Posterior limb of internal capsule, R | 0.701 | 0.678 | 3.72 | 33.1 | 0.0007 |
| Superior fronto-occipital fasciculus, R | 0.548 | 0.507 | 3.79 | 27.0 | 0.0008 |
| MD | |||||
| Superior fronto-occipital fasciculus, L | 6.31 × 10−4 | 6.68 × 10−4 | 4.57 | 36.3 | <0.0001 |
| Genu of corpus callosum | 6.92 × 10−4 | 7.25 × 10−4 | 4.36 | 45.5 | <0.0001 |
| Anterior corona radiata, L | 7.13 × 10−4 | 7.46 × 10−4 | 4.29 | 40.9 | 0.0001 |
| Superior fronto-occipital fasciculus, R | 6.30 × 10−4 | 6.69 × 10−4 | 4.39 | 32.0 | 0.0001 |
| Anterior limb of internal capsule, R | 6.85 × 10−4 | 7.10 × 10−4 | 4.15 | 40.0 | 0.0002 |
| Posterior limb of internal capsule, R | 6.95 × 10−4 | 7.18 × 10−4 | 4.24 | 31.9 | 0.0002 |
| Body of corpus callosum | 7.73 × 10−4 | 8.03 × 10−4 | 3.68 | 43.1 | 0.0006 |
| RD | |||||
| Superior fronto-occipital fasciculus, R | 4.14 × 10−4 | 4.60 × 10−4 | 6.03 | 46.5 | <0.0001 |
| Posterior limb of internal capsule, R | 3.56 × 10−4 | 3.86 × 10−4 | 4.73 | 34.7 | <0.0001 |
| Middle cerebellar peduncle | 4.68 × 10−4 | 4.27 × 10−4 | 4.65 | 22.8 | 0.0001 |
| Genu of corpus callosum | 2.67 × 10−4 | 3.09 × 10−4 | 4.16 | 40.2 | 0.0002 |
| Anterior limb of internal capsule, R | 4.05 × 10−4 | 4.29 × 10−4 | 4.08 | 44.5 | 0.0002 |
| Splenium of corpus callosum | 2.43 × 10−4 | 2.72 × 10−4 | 4.02 | 42.3 | 0.0002 |
| Anterior corona radiata, L | 4.93 × 10−4 | 5.29 × 10−4 | 3.72 | 36.7 | 0.0007 |
| External capsule, L | 5.28 × 10−4 | 5.52 × 10−4 | 3.49 | 43.9 | 0.0011 |
| AD | |||||
| Superior fronto-occipital fasciculus, L | 1.03 × 10−3 | 1.08 × 10−3 | 4.29 | 27.6 | 0.0002 |
Group means and the results of two-sample t-tests are shown. Statistical significance was determined by correction of α-levels for multiple comparison. L, left; R, right; df, degrees of freedom.