Table 2 –
Summary of the spectral quality metrics and voxel tissue composition across the study cohort. No systematic difference in spectral quality was found between groups. The thalamus voxel contained less WM and more CSF in HE patients than in controls. Bold = significantly different (p < 0.05) to controls.
| mean (SD) | |||
|---|---|---|---|
| controls | mHE | HE | |
| Cerebellum | |||
| n | 15 | 3 | 12 |
| SNR | 124.8 (31.2) | 139.9 (9.9) | 138.3 (23.6) |
| FWHM (Hz) | 8.6 (0.9) | 8.3 (0.1) | 8.3 (0.6) |
| Thalamus | |||
| n | 16 | 3 | 15 |
| SNR | 128.7 (28.1 | 144.9 (32.3) | 109.6 (22.9) |
| FWHM (Hz) | 11.7 (1.8) | 11 (1.7) | 12.7 (1.4) |
| Motor cortex | |||
| n | 14 | 2 | 12 |
| SNR | 258 (62.3) | 236.7 (27.3) | 220.4 (49.6) |
| FWHM (Hz) | 7.7 (0.3) | 7.47 (0.3) | 8.2 (1.0) |
|
| |||
| Cerebellum | |||
| GM (%) | 49 (5) | 47 (5) | 49 (6) |
| WM (%) | 49 (5) | 50 (5) | 47 (9) |
| CSF (%) | 2 (1) | 4 (3) | 4 (4) |
| Thalamus | |||
| GM (%) | 31 (3) | 34 (6) | 31 (5) |
| WM (%) | 60 (4) | 57 (1) | 55 (5) |
| CSF (%) | 9 (3) | 9 (6) | 14 (5) |
| Motor cortex | |||
| GM (%) | 25 (3) | 23 (0) | 25 (3) |
| WM (%) | 63 (4) | 64 (0) | 63 (4) |
| CSF (%) | 13 (2) | 13 (1) | 13 (4) |