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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

From: MRI assessment of altered dynamic changes in liver haemodynamics following a meal challenge in compensated cirrhosis

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
  1. SENSE sensitivity encoding, NA not available