Table 1.
MR imaging sequences and parameters.
| Parameters | T2WI Sagittal | T2WI Axial | T1WI Axial | T1 Mapping | MTI |
|---|---|---|---|---|---|
| TR (ms) | 4000 | 3200 | 700 | 8.6 | 538 |
| TE (ms) | 99 | 99 | 15 | 3.6 | 4.4 |
| Matrix | 180 × 256 | 180 × 256 | 180 × 256 | 192 × 256 | 286 × 704 |
| FOV (mm2) | 70 × 100 | 49 × 70 | 49 × 70 | 52 × 70 | 73 × 179 |
| Voxel size (mm3) | 0.4 × 0.4 × 2.0 | 0.3 × 0.3 × 2.0 | 0.3 × 0.3 × 2.0 | 0.3 × 0.3 × 2.0 | 0.3 × 0.3 × 2.0 |
| Thickness (mm) | 2.0 | 2.0 | 2.0 | 2.0 | 2.0 |
| FA (degree) | 120 | 120 | 150 | 2, 12 | 30 |
| Bandwidth (kHz) | 203 | 203 | 151 | 210 | 254 |
| Acquisition time (s) | 186 | 200 | 195 | 144 | 130 |
FA = flip angle; FOV = field of view; MTI = magnetization transfer imaging; TE = echo time; TR = repetition time; T1WI = T1-weighted imaging; T2WI = T2-weighted imaging.