TABLE 1.
Sequence parameters. T2* Iso is the abbreviation of isotropic
| Sequence | 3D-MPRAGE | 2D-TSE | 2D-TSE | 2D-GRE | 2D-GRE | 2D-GRE |
|---|---|---|---|---|---|---|
| Contrast | T1 | T2 | PD | T2* | T2* | T2* |
| Motion correction (PMC) | On/Off | On/Off | On/Off | On/Off | On/Off | On/Off |
| In-plane resolution (mm) | 0.45 iso* | 0.28 iso* | 0.28 iso* | 0.5 iso* | 0.35 iso* | 0.25 iso* |
| Slice thickness (mm) | 0.45 | 1.0 | 1.0 | 1.5 | 1.5 | 1.5 |
| Matrix size (voxel) | 496×496 | 690×704 | 690×704 | 336×448 | 480×640 | 672×896 |
| Voxel volume (mm3) | 0.091 | 0.078 | 0.078 | 0.375 | 0.184 | 0.094 |
| slices | 416 | 15 | 15 | 30 | 30 | 30 |
| TR (ms) | 2820 | 6000 | 6000 | 680 | 680 | 680 |
| TE (ms) | 2.82 | 59.0 | 9.9 | 16.6 | 15.1 | 16.6 |
| TI (ms) | 1050 | - | - | - | - | - |
| Flip angle (°) | 5 | 130 | 130 | 30 | 30 | 30 |
| Bandwidth (Hz/px) | 170 | 473 | 473 | 60 | 60 | 60 |
| Total ADC duration (ms) | 5.88 | 2.11 | 2.11 | 16.67 | 16.67 | 16.67 |
| TA (mm:ss) | 12:12 | 5:12 | 5:12 | 8:21 | 11:37 | 15:58 |
| Parallel imaging | GRAPPA 2 | GRAPPA 2 | GRAPPA 2 | GRAPPA 2 | GRAPPA 2 | GRAPPA 2 |