Fig. 10
From: The role of ultrasound imaging in vascular compression syndromes
a This angiographic image shows the endovascular stent after positioning into the left renal vein (arrows). b Duplex Doppler US highlights the patency of the vascular stent showing a flow with a peak velocity of about 29.8 cm/s. c After stenting, Color Doppler US show a increased flow of the left renal vein (18 cm/s). d Power Doppler US shows a regular caliber of the pampiniform plexus vein (diameters of 2 mm)