Table 1 MRI protocol
From: The value of CSF flow studies in the management of CSF disorders in children: a pictorial review
Sequence | 3-plane localizer | T2-WI | FLAIR | T1-WI | 3D-DRIVE | Phase contrast | Phase contrast | Post-contrast T1-WI | T2*-WI |
|---|---|---|---|---|---|---|---|---|---|
Slice orientation | Axial, coronal, sagittal | Axial, coronal | Axial | Sagittal | Sagittal** | Sagittal | axial | Axial, coronal and sagittal | Axial |
Slice thickness (mm) | 10 | 4 | 4 | 4 | 2 | 10 | 4 | 4 | 4 |
Gap (mm) | 20 | 5 | 5 | 5 | 1 | 10 | 4 | 5 | 5 |
FOV (cm) | 25 × 25 | 25 × 25 | 25 × 25 | 25 × 25 | 23 × 23 | 25 × 25 | 10 × 10 | 25 × 25 | 25 × 25 |
TR (ms) | 15 | 4250 | 11,000 | 110 | 1500 | 20 | 18 | 520 | 690 |
TE (ms) | 5 | 100 | 130 | 1.8 | 250 | 7 | 11 | 15 | 23 |
Matrix | 125 × 256 | 197 × 256 | 197 × 256 | 256 × 256 | 270 × 340 | 180 × 256 | 145 × 200 | 197 × 256 | 197 × 256 |
Flip angle | 20 | 90 | 90 | 80 | 90 | 10 | 15 | 80 | 18 |
NEX | 1 | 1 | 2 | 1 | 2 | 2 | 2 | 1 | 1 |
Velocity encoding (cm/s) | – | – | – | – | – | 20 | 20 | – | – |