Table 1.
Specific sequence parameters for the MRA at 1.5 T (Siemens Avanto) and 3.0T (Siemens TimTrio) using a 6-element body matrix coil and the inbuilt 32-element spine coil
| 1.5 T MRA slow | 1.5 T MRA fast | 3.0 T MRA | |
|---|---|---|---|
| TR/TE [ms] | 3.77/1.39 | 3.77/1.39 | 3.14/1.1 |
| Flip angle [°] | 25 | 25 | 23 |
| Bandwidth [Hz/Px] | 350 | 350 | 510 |
| Matrix | 512 × 80% | 512 × 80% | 512 × 80% |
| FOV [mm2] | 400 × 87% | 400 × 87% | 400 × 81% |
| Phase Oversampling [%] | 0 | 0 | 8 |
| Voxel size [mm3] | 0.8 | 0.8 | 0.65 |
| Spatial resolution [mm3] | 1 × 0.8 × 1 | 1 × 0.8 × 1 | 0.9 × 0.8 × 0.9 |
| Scan time [s] | 26 | 19 | 18 |
| Partitions | 80 | 80 | 96 |
| Parallel imaging | GRAPPA factor 2 | GRAPPA factor 3 | GRAPPA factor 3 |