Table 2.
MRI parameters
| Parameter | T2WI (axial) | T2WI (coronal) | Diffusion-weighted imaging |
|---|---|---|---|
| Sequence | TSE | TSE | Single-shot EPI |
| Acquisition plane | Axial | Coronal | Axial |
| Repetition time/echo time (ms) | 4000/130 | 3300/130 | 4000/65 |
| Flip angle (°) | 90 | 90 | 90 |
| Echo train length/EPI factor | 16 | 16 | 29 |
| Sensitivity-encoding factor | 2 | 2 | 3 |
| Phase-encoding direction | RL | RL | AP |
| b-values (s mm−2) | – | – | 0, 100, 500, 1000, 2000 |
| Fat saturation | – | – | SPAIR |
| Field of view (mm) | 200 × 200 | 200 × 200 | 450 × 360 |
| Acquisition matrix | 256 × 256 | 256 × 256 | 128 × 128 |
| Slice thickness/gap (mm) | 3/0 | 3/0 | 3/0 |
| Number of slices | 25 | 25 | 25 |
| Number of excitations | 3 | 3 | 3 |
| Acquisition time (s) | 3:40 | 2:30 | 7:20 |
AP, anterior to posterior; EPI, echo-planar imaging; RL, right to left; SPAIR, spectral attenuated with inversion recovery fat suppression method; T2WI, T2 weighted imaging; TSE, turbo spin-echo.