Isolated Marked Inferior Vena Cava Dilatation: Unusual Presentation or Underrecognized Common Phenomenon?

Figure 3

Hepatic flow Doppler. Doppler signal marked S for systolic and D for diastolic. Informal visualization shows systolic velocity (Vs) of 0.32 m/sec and diastolic velocity (Vd) of 0.38 m/sec.