Figure 2.

Example of normal and abnormal flow morphology in internal jugular vein (IJV) on magnetic resonance venography (3D TRICKS and axial 2D TOF). Normal (A & B) flow morphology in both IJV (arrows). Abnormal (absent flow) (C &D) flow in the left internal jugular vein (arrow) with prominent collateral veins (dotted arrows).

Zivadinov et al. BMC Neurology 2013 13:151   doi:10.1186/1471-2377-13-151
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