Table 2 MRI sequence parameters for scanning
Sequence | T1w | T2w | DWI | fMRI | QSM | ||||
|---|---|---|---|---|---|---|---|---|---|
Type | MEMPRAGE | T2-SPACE | Shell 1 | Shell 2 | Shell 3 | Blip Up/Down | rs-fMRI | Blip Up/Down | Multi-echo |
 TR (ms) | 2530 | 3200 | 3200 | 3200 | 3200 | 3200 | 1500 | 3980 | 52 |
 TE (ms) | 1.77, 3.51 5.32, 7.2 | 532 | 110 | 110 | 110 | 110 | 33 | 33 | 7.38, 14.76, 22.14, 29.52, 36.90, 44.27 |
 TI (ms) | 1260 | - | - | - | - | - | - | - | - |
 Flip angle (deg) | 7 | - | 90 | 90 | 90 | 90 | 85 | 85 | 15 |
 Slices | 176 | 176 | 63 | 63 | 63 | 63 | 60 | 60 | - |
 Voxel size (mm3) | 0.9 | 0.9 | 2.4 | 2.4 | 2.4 | 2.4 | 2.5 | 2.5 | 1.0 |
 FoV read (mm) | 230 | 240 | 260 | 260 | 260 | 260 | 255 | 255 | 256 |
 FoV phase (%) | 90.6 | 89.8 | 100 | 100 | 100 | 100 | 100 | 100 | 68.8 |
 Matrix | 256 × 232 | 256 × 230 | 110 × 110 | 110 × 110 | 110 × 110 | 110 × 110 | 104 × 104 | 104 × 104 | 256 × 176 |
 Band width (Hz/Px) | 723, 751, 651, 651 | 610 | 1748 | 1748 | 1748 | 1748 | 1718 | 1718 | 210, 210, 210, 210, 210, 210 |
 Echo spacing (ms) | 10.1 | 3.76 | 0.69 | 0.69 | 0.69 | 0.69 | 0.69 | 0.69 | - |
 Orientation | S | S | T | T | T | T | T | T | T |
 B value (s/mm2) | - | - | 2800 | 2000 | 1000 | 0 | - | - | - |
 No. directions/b = 0 s | - | - | 60/4 | 45/6 | 25/6 | -/2 | - | - | - |
 Multi-band factor | - | - | 3 | 3 | 3 | 3 | 3 | 1 | - |
 Acquisition time | 6 m 52 s | 4 m 8 s | 3 m 57 s | 3 m 15 s | 2 m 11 | 35 s (x 2) | 6 m 33 s | 24 s (x 2) | 8 m 43 s |