Means of FA, MD, AD, and RD according to different levels of the cervical and thoracic SC
| DTI Parameters | Cord Divisions | |||||
|---|---|---|---|---|---|---|
| CUP | CMID | CLOW | TUP | TMID | TLOW | |
| FAa | 0.60 ± 0.08 | 0.59 ± 0.07 | 0.54 ± 0.08 | 0.53 ± 0.09 | 0.60 ± 0.10 | 0.49 ± 0.09 |
| MDb | 1.06 ± 0.20 | 1.08 ± 0.15 | 1.15 ± 0.24 | 0.98 ± 0.32 | 1.05 ± 0.26 | 0.93 ± 0.27 |
| ADc | 1.85 ± 0.30 | 1.90 ± 0.20 | 1.89 ± 0.33 | 1.58 ± 0.50 | 1.83 ± 0.35 | 1.45 ± 0.41 |
| RDd | 0.66 ± 0.18 | 0.67 ± 0.15 | 0.78 ± 0.23 | 0.67 ± 0.26 | 0.66 ± 0.24 | 0.66 ± 0.23 |
Note:—CUP indicates upper cervical cord; CMID, middle cervical cord; CLOW, lower cervical cord, TUP, upper thoracic cord; TMID, middle thoracic cord; TLOW, lower thoracic cord.
↵a FA = CUP vs CMID: P = .3732; CUP vs CLOW: P < .0001; CMID vs CLOW: P <. 0001; TUP vs TMID: P < .0001; TUP vs TLOW: P < .0001; TMID vs TLOW: P < .0001.
↵b MD = CUP vs CMID: P = .1357; CUP vs CLOW: P < .0001; CMID vs CLOW: P = .0265; TUP vs TMID: P < .0001; TUP vs TLOW: P = .2665; TMID vs TLOW: P < .0001.
↵c AD = CUP vs TUP: P < .0001; CUP vs TLOW: P <. 0001; CUP vs TMID: P = .1485; CMID vs TUP: P <. 0001; CMID vs TMID: P = .0033; CMID vs TLOW: P < .0001; CLOW vs TUP: P < .0001; CLOW vs TMID: P = .0158; CLOW vs TLOW: P < .0001.
↵d RD = CUP vs TUP: P = .2707; CUP vs TLOW: P = .9320; CUP vs TMID: P = .1044; CMID vs TUP: P = .0198; CMID vs TMID: P = .0048; CMID vs TLOW: P = .1774; CLOW vs TUP: P < .0001; CLOW vs TMID: P <. 0001; CLOW vs TLOW: P < .0001.