Table 1.
Imaging parameters for the mapping of T2∗, T2 and T1.
| Parameter | T2∗ | T2 | T1 |
|---|---|---|---|
| Sequence | 2D single echo UTE | 2D single echo RARE | 2D RAREVTR |
| TE | 0.5, 1, 2, 4, 6, 8, 10 and 12 ms | 4.7, 7, 9, 11, 13, 15 and 17 ms | 6 ms |
| TR | 17.5 ms | 1500 ms | 200, 400, 800, 1500, 3000 and 6000 ms |
| Flip angle | 10° | 90° | 90° |
| BW | 391 Hz/pixel | 385 Hz/pixel | 637 Hz/pixel |
| FOV | 58 × 58 mm2 | 35 × 35 mm2 | 58 × 58 mm2 |
| Number of slices | 7 | 7 or 12 | 7 |
| Voxel size | 0.23 × 0.23 × 1 mm3 | 0.14 × 0.14 × 1 mm3 | 0.45 × 0.45 × 1 mm3 |
| Acquisition time | 8 × 3 min 17 s | 7 × 2 min 24 s | 9 min 43 s |