Table 2 MRI sequences and parameters used in the study; S and T define Sagittal and Transversal orientation, respectively
| Â | Structural | Functional | ||||
|---|---|---|---|---|---|---|
Sequence | MEMPR | FLAIR | T2* | dMRI | Multiband | Standard |
Condition | ———————————— | ———————————— | ——————————— | ———————————— | Resting | Resting |
TR in ms | 2530 | 9000 | 36 | 8900 | 1300 | 3000 |
TE in ms | 1.79/3.65/5.51/7.37 | 73 | 30 | 91.2 | 40 | 30 |
Flip angle | 7° | 150° | 15° | ———————————— | 66° | 90° |
Voxel in mm 3 | 1x1x1 | 0.9x0.9x3 | 0.7x0.7x1.5 | 2x2x2 | 2x2x2 | 3x3x3 |
FoV read | 256 | 220 | 220 | 192 | 212 | 192 |
FoV phase | 100% | 100% | 81.3% | 100% | 100% | 100% |
Base resolution | 256 | 256 | 320 | 96 | 106 | 64 |
Phase resolution | 100% | 100% | 100% | 100% | 100% | 100% |
TI in ms | 1380 | 2500 | ——————————— | ———————————— | ———————————— | ———————————— |
Bandwidth | 651Â Hz/Px | 283Â Hz/Px | 170Â Hz/Px | 1680Â Hz/Px | 1814Â Hz/Px | 2368Â Hz/Px |
Orientation | S | T | T | T | T | T |
b-value | ————————— | ——————————— | —————————— | 1500 s/mm2 | ——————————— | ————————————— |
N. of volumes | ————————— | ——————————— | ————————— | —————————— | 460 | 200 |
N. of directions | —————————— | ——————————— | —————————— | 60 + 5 b = 0 s | ———————————— | ————————————— |
Acquisition time | 6Â m 12Â s | 4Â m 14Â s | 4Â m 17Â s | 9Â m 56Â s | 10Â m 10 s | 10Â m |