Table 2.
Example technical parameters for contrast-enhanced MR angiography acquisitionsa
| GE-MRV | FE-MRV | |
|---|---|---|
| TR (ms) | 3.38 | 3.02 |
| TE (ms) | 1.35 | 1.16 |
| Flip angle | 12° | 15° |
| Bandwidth (Hertz/pixel) | 610 | 610 |
| Voxel dimensions (mm3) | 0.6–1.2 × 0.6–1.2 × 0.6–1.2 = 0.2–1.7 | 0.6–1.2 × 0.6–1.2 × 0.6–1.2 = 0.2–1.7 |
| Number of phase encoding steps | 162 | 149 |
| Acquisition time (s) | 16.4–21 | 16.0–21 |
| Specific absorption rate | 0.434 | 0.627 |
| Parallel acquisition factor | 3 | 3 |
FE-MRV ferumoxytol-enhanced magnetic resonance venography, GE-MRV gadofosveset-enhanced magnetic resonance venography, TE echo time, TR repetition time
a 3.0 T, 32-channel whole-body scanner (Magnetom TIM Trio), gradient strength = 40 mT/m, slew rate = 200 mT/m/ms