Table 1.
Structural and functional scan parameters per scan site.
| Parameters | Structural | Resting-state | ||
|---|---|---|---|---|
| LUMC | OCMRa | LUMC | OCMR | |
| TR | 9.8 ms | 2040 ms | 2200 ms | 2000 ms |
| TE | 4.6 ms | 4.7 ms | 30 ms | 28 ms |
| Flip angle | 8° | 8° | 80° | 89° |
| Number of slices/FOV | 140 slices | FOV = 192 cm2 | – | – |
| Number of axial slices | – | – | 38 | 34 |
| Number of volumes | – | – | 200 | 180 |
| Voxel size | 0.88 × 0.88 × 1.20 mm | 1 × 1 × 1 mm | 2.75 × 2.75 × 2.75 mm + 10% interslice gap | 3 × 3 × 3.5 mm |
| Total scan time | 5 min | 6 min | 8 min | 6 min |
FOV, field of view; LUMC, Leiden University Medical Centre; OCMR, Oxford Centre for Clinical Magnetic Resonance Research; TE, echo time; TR, repetition time.
a
Structural scanning at OCMR was done using a magnetization-prepared rapid gradient echo sequence (MPRAGE).