Table 1 Magnetic resonance parameters for blood flow assessment using phase contrast magnetic resonance imaging, liver perfusion measures using arterial spin labelling (ASL) and transverse relaxation (T2*) mapping of the liver
Parameter | Phase contrast | ASL | T2* | ||
|---|---|---|---|---|---|
Portal vein | Hepatic artery | Azygos vein | |||
Reconstructed voxel (mm3) | 1.17 × 1.17 × 6 | 1.17 × 1.17 × 6 | 1.17 × 1.17 × 6 | 3 × 3 × 5 | 1 × 1 × 8 |
Repetition time (ms) | 8.4 | 5.6 | 7.5 | 2.9 | 365 |
Echo time (ms) | 3.7 | 3.2 | 3.7 | 1.45 | 2.5 |
Flip angle (°) | 25 | 25 | 25 | 45 | 30 |
SENSE factor | 2 | 2 | 2 | 2 | 2.5 |
Velocity encoding (cm/s) | 50 | Baseline 100 Postprandial 150 | 50 | NA | NA |
Phases (number) | 20 | 30 | 20 | NA | NA |