Figure 1From: Renal resistive index as an indicator of the presence and severity of anemia and its future development in patients with hypertensionExample of renal resistive index measurement. Pulsed Doppler ultrasonography was obtained in the intra-renal artery at the level of the corticomedullary junction. Renal resistive index is measured as {peak systolic velocity (a) - end diastolic velocity (b)} / peak systolic velocity (a).Back to article page