Kidney ultrasound
KIDNEY
Kidney ultrasound was then performed, followed by the measurement of the renal resistance index (RRI): locating intrarenal vessels using a convex array probe in two-dimensional ultrasound mode and color Doppler, selecting the interlobe artery or arcuate artery, and measuring renal RRI. RRI = (PSV-EDV)/PSV, where PSV is the peak systolic velocity and EDV is the end-diastolic velocity. The RRI is calculated using the average of three readings [