Table 1.
MRI acquisition parameters used for screening and follow-up studies with 1.5 T MRI scanner.
| Sequences | Slice thickness (mm) | Gap | TR (ms) | TE (ms) | IT (ms) | Matrix | NEX | FOV (cm) |
|---|---|---|---|---|---|---|---|---|
| Sagittal T2w FRFSEa | 2 | 0 | 5269 | 97 | n.a | 224 × 224 | 5 | 24 × 24 |
| Coronal T2w FRFSEa | 2 | 0 | 4387 | 108 | n.a | 320 × 288 | 5 | 24 × 24 |
| Axial T2w FEFSEa | 2 | 0 | 4380 | 108 | n.a | 320 × 288 | 5 | 24 × 24 |
| Axial T2w FSE-IRa | 2 | 0 | 4500 | 40 | 300 | 320 × 288 | 1 | 24 × 24 |
| Axial T1w 3D IR BRAVO | 1 | 0 | 12.4 | 5.2 | 450 | 256 × 256 | 1 | 25.6 × 25.6 |
| Sagittal T2w 3D FLAIR Fat Sat | 1.2 | 0 | 6000 | 124.6 | 1866 | 224 × 224 | 1 | 26 × 26 |
| EP-DWI | 5 | 1 | 7000 | Shortest | n.a | 128 × 128 | 1 | 24 × 24 |
| Axial 3D SWAN | 3 | 0 | 78.5 | 50 | n.a | 288 × 224 | 1 | 23 × 23 |
| Axial T1w FSE | 5 | 1 | 475 | Shortest | n.a | 256 × 192 | 2 | 24 × 24 |
TR repetition time, TE echo time, TI inversion time, NEX number of excitations, FOV field of view, FRFSE fast recovery fast spin echo, FSE fast spin echo, IR inversion recovery, BRAVO brain volume acquisition, FLAIR Fat Sat fluid-attenuated inversion-recovery with fat signal saturation, EP echo planar, DWI diffusion weighed imaging, SWAN susceptibility-weighted angiography.
aBasal ganglia coverage.