Figure 5.

Grayscale ultrasonographic image and resistive index in glomerular diseases. Patients with glomerular disease are classically described as having increased kidney size, with normal or increased parenchymal echogenicity, and normal resistive index. (A) Grayscale ultrasonographic image of LK demonstrates increased kidney size (13.1 cm) and normal parenchymal echogenicity and (B) Doppler image demonstrates resistive index of 0.51 in a 50-year-old man with biopsy-proven minimal-change disease. (C) Grayscale ultrasonographic image of RK demonstrating increased kidney size (13.6 cm) and normal parenchymal echogenicity, and (D) normal resistive index (0.63) in 57-year-old man with rapidly progressive GN and biopsy-certain necrotizing and crescentic GN from a pauci-immune GN; creatinine was 4.3 mg/dl at time of biopsy.