Table 1.
Imaging parameters of 3D GRE and TSE sequence of two centers
| Site 1 | Site 2 | |||
|---|---|---|---|---|
| Technique | GRE | TSE | GRE | TSE |
| TR (msec) | 9.8 | 600 | 5.9–8.6 | 500 |
| TE (msec) | 4.6 | 28.4 | 2.8–4.7 | 28.9–30 |
| Flip angle (degrees) | 8 | 90 | 8 | 90 |
| FOV (mm2) | 240 × 240 | 240 × 240 | 240 × 240 | 240 × 240 |
| Acquisition matrix | 512 × 512 | 512 × 512 | 240 × 240 | 240 × 240 |
| Voxel size (mm) | 0.5 × 0.5 × 0.5 | 0.5 × 0.5 × 0.5 | 1 × 1 × 1 | 1 × 1 × 1 |
| Slice thickness (mm) | 1 | 1 | 1 | 1 |
| Number of excitations | 2 | 1 | 2 | 1 |
| Acquisition plane | Sagittal | Sagittal | Sagittal | Sagittal |
Note GRE = gradient-echo; TSE = turbo spin echo; TR = repetition time; TE = echo time; FOV = field of view