Table 1:
MR imaging parameters for brain and spinal cord image acquisition for all of the participants
| MRI Parameters | Brain |
Spinal Cord |
||||
|---|---|---|---|---|---|---|
| Axial 3D SWAN | Axial 3D FSPGR | Axial T2*GRE | Sagittal 3D Volumetric GRE | Coronal T2 | Axial T2 | |
| TE (ms) | 50 | Minimum | 645 | Minimum | 120 | 110 |
| TR (ms) | 78.3 | – | 25 | – | 3700 | 5934 |
| Flip angle | 15° | 12° | 15° | 45° | – | – |
| Bandwidth (kHz) | 41.67 | 31.25 | 31.25 | 50 | 41 | 31.25 |
| FOV (cm) | 20 | 20 | 24 | 30 | 25 | 18 |
| Section thickness (mm) | 3 | 2 | 5 | 0.8 | 4.5 | 4 |
| Spacing (mm) | – | – | 0.5 | – | 0.5 | 1 |
| Frequency (Hz) | 288 | 256 | 288 | 320 | 384 | 320 |
| Phase | 224 | 256 | 192 | 320 | 224 | 224 |
| NEX | – | 1 | 1 | 1 | 1 | 3 |
| Frequency direction | AP | AP | AP | AP | R-L | AP |
Note:—AP indicates anteroposterior; R-L, right-left; FSPGR, fast-spoiled gradient recalled; SWAN, susceptibility-weighted angiography.