Conventional imaging characteristics of the patients and abnormalities detected using diffusion tensor imaging
| Conventional | Fractional anisotropy | Apparent diffusion coefficient | ||||
| TBI | IHI | TBI | IHI | TBI | IHI | |
| n (%) | n (%) | n (%) | n (%) | n (%) | n (%) | |
| Whole-brain central white matter | 1 (14) | 2 (40) | 7 (100) | 5 (100) | 7 (100) | 5 (100) |
| Whole-brain grey matter | 2 (29) | 5 (100) | 3 (43) | 5 (100) | ||
| Anterior corpus callosum | 0 | 0 | 6 (86) | 4 (80) | 6 (86) | 3 (60) |
| Posterior corpus callosum | 3 (43) | 0 | 7 (100) | 5 (100) | 7 (100) | 5 (100) |
| Thalamus | 2 (29) | 0 | 1 (14) | 5 (100) | 6 (86) | 3 (60) |
| Ventrolateral brainstem | 2 (29) | 1 (20) | 7 (100) | 0 | 3 (43) | 1 (20) |
| Dorsolateral midbrain | 4 (57) | 1 (20) | 6 (86) | 0 | 6 (86) | 0 |
| Pons | 2 (29) | 1 (20) | 6 (86) | 0 | 7 (100) | 1 (20) |
Numbers of patients with lesions in the areas qualitatively seen are compared with the number of patients with abnormalities detected using diffusion tensor imaging in normal appearing tissue. Parameters more than 2 standard deviations from the control mean in the regions of interest analysed were considered damaged.
IHI, ischaemic/hypoxic injuries; TBI, traumatic brain injuries.