Regional DTI parameters of the normal cord in control individuals and patients
| Parameters | Control | Patient | ||||
|---|---|---|---|---|---|---|
| Upper | Mid | Lower | Upper | Mid | Lower | |
| ADC (*10−3 mm2/s) | 0.83 ± 0.07 | 0.97 ± 0.11 | 0.97 ± 0.11 | 0.71 ± 0.13 | 0.77 ± 0.13 | 0.74 ± 0.13 |
| P value | .013 | .0005 | .00013 | |||
| FA | 0.64 ± 0.08 | 0.69 ± 0.06 | 0.63 ± 0.06 | 0.63 ± 0.09 | 0.64 ± 0.08 | 0.60 ± 0.08 |
| P value | .378 | .075 | .187 | |||
| RA | 0.63 ± 0.12 | 0.68 ± 0.09 | 0.59 ± 0.08 | 0.59 ± 0.12 | 0.60 ± 0.1 | 0.53 ± 0.1 |
| P value | .248 | .037 | .099 | |||
| VR | 0.53 ± 0.15 | 0.49 ± 0.11 | 0.59 ± 0.09 | 0.53 ± 0.15 | 0.55 ± 0.12 | 0.61 ± 0.13 |
| P value | .49 | .135 | .381 | |||
| E1 (*10−3 mm2/s) | 1.54 ± 0.15 | 1.88 ± 0.2 | 1.75 ± 0.15 | 1.25 ± 0.23 | 1.40 ± 0.27 | 1.27 ± 0.23 |
| P value | .0018 | .0001 | .000105 | |||
| E2 (*10−3 mm2/s) | 0.63 ± 0.09 | 0.68 ± 0.10 | 0.74 ± 0.12 | 0.62 ± 0.14 | 0.64 ± 0.11 | 0.67 ± 0.1 |
| P value | .393 | .199 | .063 | |||
| E3 (*10−3 mm2/s) | 0.32 ± 0.1 | 0.36 ± 0.11 | 0.42 ± 0.11 | 0.25 ± 0.11 | 0.29 ± 0.08 | 0.29 ± 0.13 |
| P value | .09 | .039 | .01 | |||
Note:—Bold indicates P value < .05; ADC, apparent diffusion coefficient; FA, fractional anisotropy; RA, relative anisotropy; VR, volume ratio; E1, eigenvalue E1.