Table 2. MRI sequences and corresponding parameters.
| Parameters | T2-weighted imaging | T2-weighted imaging | ASL | DTI |
|---|---|---|---|---|
| Orientation | Coronal | Transverse | Transverse | Coronal |
| TR/TE (msec) | 1,086/80 | 1,300/257 | 3,963/15 | 2,300/67 |
| Respiratory control | Free breath | Free breath | Free breath | Free breath |
| Voxel size (mm3) | 1.45×1.45×5 | 0.90×0.91×1.80 | 3.75×3.75×8.00 | 2.50×2.53×5.00 |
| FOV (mm2/mm3) | 400×400 | 350×350 | 240×240×88 | 320×400 |
| Number of slices | 30 | 222 | 11 | 20 |
| b-factor (s/mm2) | – | – | – | 0 and 600 |
| Total scan duration (min) | 3 | 4 | 5 | 3 |
| TSE factor | 35 | 136 | 20 | – |
| Diffusion directions | – | – | – | 15 |
ASL, arterial spin labeling; DTI, diffusion tensor imaging; FOV, field of view; MRI, magnetic resonance imaging; TE, echo time; TR, repetition time; TSE, turbo spin echo.