Table 2. Short-term reproducibility of phase contrast metrics (PV flow, PV velocity), DWI metrics (liver D, D*, PF and ADC) and liver stiffness (LS) measured in 30 subjects (expressed as mean ± SD) in fasting state (measured twice).
| Fasting #1 | Fasting #2 | Mean CV | BA limits of agreement (%) | |
| PV flow | 15.8±5.4 | 16.4±5.5 | 11.5% | −35.7, 44.0 |
| PV velocity | 10.9±3.0 | 10.7±3.0 | 9.0% | −34.6, 30.1 |
| D | 1.0±0.2 | 1.0±0.2 | 15.2% | −63.5, 69.7 |
| D* | 67.9±57.3 | 68.9±77.3 | 51.6% | −200.5,184.5 |
| PF | 21.5±10.9 | 19.8±8.2 | 20.4% | −76.9, 69.0 |
| ADC | 1.3±0.2 | 1.3±0.3 | 8.2% | −30.6, 31.2 |
| LS** | 3.6±1.9 | 3.5±1.8 | 3.8% | −15.0, 11.9 |
CV (coefficients of variation) and Bland-Altman (BA) limits of agreement are calculated to assess reproducibility in fasting conditions.
PV: portal vein, PV flow (ml/s), PV velocity (cm/s), D (true diffusion coefficient, ×10−3 mm2/s), D* (pseudodiffusion coefficient, ×10−3 mm2/s), PF (perfusion fraction, %), ADC (apparent diffusion coefficient, ×10−3 mm2/s), LS (liver stiffness, kPa) **: LS calculated in 27 subjects.