Fig. 1A.52-year-old woman with lower extremity pain. Longitudinal
duplex Doppler sonogram shows color flow in femoral artery, but no flow is
visible in femoral vein (arrow). Spectral waveform shows slow phasic
flow.
Fig. 1B.52-year-old woman with lower extremity pain. Longitudinal
duplex Doppler sonogram shows improved color signal in femoral vein
(arrow) after augmentation.