Tublin et al. lary pyramids) are then insonated using a 2-to 4-mm Doppler gate. Waveforms
should be optimized for measurement using the lowest pulse repetition frequency without …

Continued improvements in graft survival have led to widespread acceptance of renal
transplantation as the preferred treatment for the majority of patients with end-stage renal …

PURPOSE: To evaluate the dependence of the resistive index (RI) on not only vascular
resistance but also vascular compliance. MATERIALS AND METHODS: An in vitro model …

The resistive index (RI), calculated from the duplex Doppler waveform, was compared with
clinical and laboratory findings and the results of renal biopsy in 41 patients with …

Ultrasonography (US) of the native kidneys is commonly requested for acute renal failure
(ARF), although in most cases the examination results are negative. To detect changes in …

To evaluate the histopathologic changes influencing Doppler measurements of the resistive
index (RI) in renal arteries in renal parenchymal diseases, 68 kidneys in 34 consecutive …

Intrarenal duplex Doppler sonography can provide physiologic information reflecting the
status of renal vascular resistance. Available data suggest 0.70 as a reasonable upper limit …

PURPOSE: Perinatal identification of children with congenital urinary obstruction has
challenged our understanding of the pathophysiology and clinical treatment of many …

PURPOSE: To assess the effect of acute changes in renal vascular resistance (RVR) and
pulse pressure on the resistive index (RI) measured by using Doppler ultrasonography (US) …

PURPOSE: To determine the variability in resistive index (RI) in normal kidneys, possible
causes of variability, and consequences of reporting a single value. MATERIALS AND …