Table 5 MRI acquisition parameters
Sequence | Repetition time (ms) | Echo time (ms) | Voxel size (mm3) | Band-width (kHz) | Others | Scan duration (min:s) |
|---|---|---|---|---|---|---|
T1w (inversion-recovery prepared fast spoiled gradient echo) | 6.7 | 2.9 | 1.0 × 1.0 × 1.0 | 31.25 | Inversion time = 650 ms, 2× acceleration | 5:31 |
T2-FLAIR | 10,000 | 140 | 0.9 × 0.9 × 3.0 | 31.25 | Inversion time = 2250 ms, 3 segments | 5:01 |
Diffusion (spin-echo echo planar imaging) | 8000 | 65 | 2.2 × 2.2 × 2.2 | 250.00 | 2× acceleration, 30 directions b-value = 1000, 3 b-value = 0 images | 4:32 |
BOLD (echo planar imaging): resting state and CVR | 2286 | 30 | 3.5 × 3.5 × 3.5 | 83.33 | 2x acceleration, 5:00 rest, 2:00 hypercapnia, 1:11 rest | 8:11 |
pCASL (fast spin echo stack-of-spirals): resting perfusion | 4786 | 10.2 | 3.6 × 3.6 × 5.0 | 62.50 | Label duration = 1500 ms, post-label delay = 2025 ms, 2 averages | 3:21 |
Dual echo pCASL: simultaneous BOLD and perfusion CVR | 4000 | 12.7/28 | 3.75 × 3.75 × 3.8 | 250.00 | Label duration = 1600 ms, post-label delay = 1000 ms, 2:16 rest, 2:00 hypercapnia, 2:00 rest | 6:16 |