Table 4.
Imaging parameters for MR angiography sequences
| Sequence | CE 3D FLASH [41] | 2D GE TOF [40] | 3D Turbo FLASH [14] |
|---|---|---|---|
| Slice orientation | Coronal | Transverse | Coronal and axial |
| TR/TE (ms) | 2.98/0.97 | 17/4.70 | 3.8/1.76 |
| Nominal flip angle (°) | 25 | 60 | 8 |
| FOV (mm) | 400 | 250 × 188 | 300–380 |
| Voxel volume (mm) | 1.5 × 1.0 × 1.0 | 1.0 × 2.0 × 2.5 | 1.1–1.2 × 1.1–1.2 × 1.0–1.3 |
| Slices | NR | 20 | 72 |
| Acquisition time | 20 sa | 33 sa | 9 minb |
| Parallel imaging | GRAPPA 2 | GRAPPA 2 | GRAPPA 2 |
| Saturation | Fat saturation | Fat saturation | Fat saturation and adiabatic inversion |
GE gradient echo, NR not reported
aEquals breath-hold length
bRespiratory triggering