MRI acquisition parameters
| 3T T1WI | 3T PDw/T2WI | 3T FLAIR | 3T MT On/Off | 7T T1WI | 7T T2* | |
|---|---|---|---|---|---|---|
| Sequence | 3D-MP2RAGE | 2D-dual echo TSE | 3D-TSE | 3D-GRE | 3D-MP2RAGE | 2D-GRE |
| Orientation | Sagittal | Axial | Sagittal | Axial | Sagittal | Axial |
| TR (ms) | 5000 | 2350 | 6000 | 36 | 6000 | 1000 |
| TE (ms) | 2.98 | 22 | 356 | 3.86 | 2.7 | 22 |
| 87 | ||||||
| TI (ms) | 700 | NA | 2200 | NA | 800 | NA |
| 2500 | 2700 | |||||
| Flip angle | 4° | 120° | 180° | 10° | 4° | 55° |
| 5° | 5° | |||||
| Slices | 176 | 120 | 176 | 192 | 224 | 60 (2 Stacks of 30) |
| Voxel size (mm) | 1 × 1 × 1 | 1 × 1 × 1.5 | 1 × 1 × 1 | 1 × 1 × 1 | 0.7 × 0.7 × 0.7 | 0.3 × 0.3 × 1 |
| Scan time (min:sec) | 8:22 | 5:26 | 8:44 | 8:10 | 10:14 | 8:26 (per stack) |
Note:—PDw indicates proton density-weighted; MT, magnetization transfer; GRE, gradient recalled-echo; NA, not applicable.