Table 4

Comparison of metric ratios

MCL: rostral ratioUncompressed
(n=20)
Compressed
(n=20)
P values
CSA1.050±0.0601.003±0.1060.09*
FA0.917±0.0540.878±0.0560.06*
MTR0.954±0.0420.960±0.0330.56
T2*WI WM/GM1.005±0.0291.001±0.0250.67
  • Ratios were calculated by dividing MCL metric values by rostral values.

  • *Denotes significance (p<0.05).

  • CSA, cross-sectional area; DCM, degenerative cervical myelopathy; FA, fractional anisotropy; MCL, maximally compressed level; MTR, magnetisation transfer ratio; T2*WI WM/GM, T2*-weighted imaging white to grey matter.