Table 1.
Overview of MRI sequence parameters.
| 3D T1 | 1H-MRS | pCASLa | PCM | |
|---|---|---|---|---|
| Field of view (mm3) | 240 × 240 × 170 | – | 220 × 220 × 78.6 | 240 × 240 |
| Voxel size (mm3) | 1.00 × 1.08 × 1.10 | – | 3.44 × 3.44 × 6.6 | 0.75 × 0.75 × 8 |
| Volume-of-interest (mm3) | – | 10.5 × 12.5 × 22 | – | – |
| Repetition time (ms) | 8 | 3000 | 3000 | 12.7 |
| Echo time (ms) | 3.7 | 38.3 | 11 | 7.72 |
| Flip angle (°) | 8 | – | 40 | 10 |
| Acquisitions | 3 | 480 | – | 10 |
| Slices | 170 | – | 13 | 1 |
| Scan duration | 5 min 29 s | 24 min | 4 min 24 s | 1 min 50 s |
1H-MRS: proton magnetic resonance spectroscopy; pCASL: pseudo-continuous arterial spin labeling; PCM: phase-contrast mapping.
a
Multi inversion times 2D arterial spin labeling sequence with pseudo-continuous labeling duration of 1650 ms and 7 post-labeling delays (TI1/ΔTI =100 ms/300 ms) was acquired using a Look-Locker scheme with an echo planar imaging read-out.