Table 2.
MRI sequence parameters used in the study
| Parameter | MRI sequence | ||
|---|---|---|---|
| T1‐weighted MPRAGE (magnetization‐prepared rapid gradient‐Echo) | T2‐weighted FLAIR (fluid attenuated inversion recovery) | Pulsed ASL (arterial spin Labeling) perfusion | |
| Voxel dimensions | 1 mm3 isotropic | 1 × 1 × 3 mm | 3.4 × 3.4 × 4 mm |
| Field of view | 256 mm | 256 mm | 220 mm |
| Number of slices | 176 | 50 | 24 |
| Distance factor | 50% | 0% | 25% |
| TR (repetition time) | 2,100 ms | 9,000 ms | 3,000 ms |
| TE (Echo time) | 3.43 ms | 91 ms | 30 ms |
| Flip angle | 9° | 150° | 90° |
| N of measurements | 1 | 1 | 105 |
| Bolus duration | NA | NA | 1,500 ms |
| Perfusion mode | NA | NA | PICORE Q2T |