Table 4.
Mean FA, MD, RD and AxD for each WM tract, for bvFTD and AD at T1. The numbers shown are multiplied by a factor 1000
| WM tract | L/R | FA | MD | RD | AxD | ||||
|---|---|---|---|---|---|---|---|---|---|
| BvFTD | AD | BvFTD | AD | BvFTD | AD | BvFTD | AD | ||
| ATR | L | 341.44 | 341.57 | 0.92 | 0.86 | 0.74 | 0.69 | 1.33 | 1.24 |
| ATR | R | 309.17 | 328.47 | 0.96 | 0.87 | 0. 79 | 0.71 | 1.37 | 1.23 |
| CGC | L | 392.49 | 443.31 | 0.88 | 0.82 | Excluded | Excluded | 1.28 | 1.22* |
| CGC | R | 346.15 | 396.49 | 0.88 | 0.82 | 0.71 | 0.63 | 1.24 | 1.19 |
| CGH | L | 246.78 | 240.96 | 0.96 | 0.90 | 0. 82 | 0.78 | 1.27 | 1.20 |
| CGH | R | 220.07 | 248.85 | 1.03 | 0.97 | 0. 91 | 0.81* | 1.31 | 1.33 |
| IFOF | L | 370.40 | 407.22 | 0.91 | 0.85 | 0.71 | 0.64 | 1.32 | 1.26* |
| IFOF | R | 311.60 | 403.42* | 0.88 | 0.85 | 0.67 | 0.65 | 1.30 | 1.26 |
| ILF | L | 357.26 | 383.46 | 0.90 | 0.85 | 0.71 | 0.65 | 1.28 | 1.23* |
| ILF | R | 371.54 | 384.99 | 0.87 | 0.84 | 0.68 | 0.66 | 1.27 | 1.23 |
| SLF | L | 310.15 | 325.04 | 0.87 | 0.83 | 0.72 | 0.68 | 1.19 | 1.17 |
| SLF | R | 306.60 | 325.68 | 0.90 | 0.84 | 0.75 | 0.68 | 1.26 | 1.18 |
| UF | L | 271.33 | 323.24 | 1.03 | 0.90 | 0.87 | 0.73 | 1.35 | 1.25 |
| UF | R | 262.51 | 317.80* | 1.16 | 0.87* | 1.00 | 0.71* | 1.53 | 1.21* |
| FMI | n/a | 285.17 | 378.20 | 1.20 | 0.92 | 1.02 | 0.71 | 1.54 | 1.33 |
| FMA | n/a | 331.97 | 376.31 | 0.92 | 0.87 | 0.74 | 0.66 | 1.36 | 1.35 |
Italicised entries = vs other patient groups p < 0.05
FA, fractional anisotropy; MD, mean diffusivity; RD, radial diffusivity; AxD, axial diffusivity; WM, white matter; bvFTD, behavioural variant frontotemporal dementia; AD, Alzheimer’s disease; ATR, anterior thalamic radiation; CGC, cingulum (cingulate); CGH, cingulum (hippocampal); IFOF, inferior fronto-occipital fasciculus; ILF, inferior longitudinal fasciculus; SLF, superior longitudinal fasciculus; UF, uncinate fasciculus; FMI, forceps minor; FMA, forceps major; L, left; R, right
*Unequal variance. Significance tested with Welch-ANOVA