TABLE 3.
QMRI measurements with and without the presence of a T2W‐IH
| T2W‐IH present (n = 11) | T2W‐IH absent (n = 42) | P value | |
|---|---|---|---|
| MTR | 55.34 | 53.08 | .34 |
| (45.48‐61.16) | (31.79‐62.27) | ||
| FA | 0.54 | 0.70 | .01* |
| (0.40‐0.80) | (0.45‐0.85) | ||
| MD | 0.91 | 0.88 | .59 |
| (0.43‐1.49) | (0.64‐1.36) | ||
| AD | 1.59 | 1.75 | .7 |
| (0.58‐2.40) | (1.04‐2.16) | ||
| RD | 0.74 | 0.46 | .25 |
| (0.28‐1.04) | (0.22‐1.01) |
Note: Data are expressed as median (range). MD, AD, and RD units are ×10−3 mm2/s. * indicates statistical significance of P < .05.
Abbreviations: AD, axial diffusivity; FA, fractional anisotropy; MD, mean diffusivity; MTR, magnetization transfer ratio; QMRI, quantitative magnetic resonance imaging; RD, radial diffusivity; T2W‐IH, T2‐weighted intramedullary hyperintensity.