Table 2.
Inter-observer reproducibility (initial scanning session) and inter-study reproducibility (observers 1 and observer 2) of cross-sectional area, RABF, mean velocity, resistive index (RI) and pulsatility index (PI)
| Reproducibility | Area (mm 2 ) | RABF per kidney (ml/min) | Mean velocity (mm/s) | RI | PI |
|---|---|---|---|---|---|
| Inter-observer | −7.2+/−2.1** | 38.5+/−20.0** | −32.3+/−8.6** | 0.01 + −0.01* | 0.07+/−0.08* |
| Inter-study (observer 1) | −2.0+/−2.4 | 17.9+/−44.8 | −6.7+/−31.1 | 0.00+/−0.04 | −0.03+/−0.17 |
| Inter-study (observer 2) | −2.6+/−4.1 | 24.2+/−59.0 | −5.5+/−36.3 | 0.00+/−0.05 | −0.01+/−0.21 |
(**p < .001, *p < .01).
All data are presented as mean (+/− standard deviation) of the signed differences between measurements.