Table 5.
Correlation of diffusion parameters of the CST and upper extremity motor behavior.
| DTI-based tractography |
CSD-based tractography |
|||
|---|---|---|---|---|
| Pearson's r | p-Value | Pearson's r | p-Value | |
| FM score | ||||
| Number of tracts | 0.365 | 0.061 | 0.251 | 0.207 |
| Tract volume | 0.358 | 0.190 | 0.306 | 0.137 |
| FA | 0.717 | 0.003* | 0.625 | 0.001* |
| ADC | −0.578 | 0.024 | −0.589 | 0.002* |
| AD | −0.397 | 0.143 | −0.428 | 0.033 |
| RD | −0.670 | 0.006* | −0.629 | 0.001* |
| Mean WMFT rate | ||||
| Number of tracts | 0.396 | 0.041 | 0.310 | 0.115 |
| Tract volume | 0.186 | 0.506 | 0.328 | 0.110 |
| FA | 0.577 | 0.024 | 0.598 | 0.002* |
| ADC | −0.476 | 0.073 | −0.581 | 0.002* |
| AD | −0.328 | 0.233 | −0.411 | 0.041 |
| RD | −0.551 | 0.033 | −0.614 | 0.001* |
AD, axial diffusivity; ADC, apparent diffusion coefficient; FA, fractional anisotropy; FM, Fugl-Meyer; RD, radial diffusivity; WMFT, Wolf motor function test.
*
With correction for multiple comparisons p-values are considered significant at ≤ 0.008.