Fig. 12
From: The role of ultrasound imaging in vascular compression syndromes
Power Doppler US and Duplex Doppler US of common iliac veins. a Left common iliac vein (arrow) dilatation in the pre-stenotic tract (14 mm). b Right common iliac vein (long arrow) with regular diameter (12 mm). Right common iliac artery (short arrow). c Duplex Doppler US shows a regular peak speed in the post-stenotic tract of the left common iliac vein (15.8 cm/s) and peak speed reduction in the pre-stenotic tract (7.3 cm/s) -D