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Fig 2. Preinterventional targeted MIP reconstructed sagittal image from an arterial phase of TR 3D MRA (A) shows a DAVF at the transverse/sigmoid sinus (short arrow) with strong early filling of the sinuses and feeding arterial branches from a prominent right occipital artery (long arrow). Small reflux into the proximal part of the vein of Labbé (arrowhead) is noted. The targeted MIP reconstructed image obtained from follow-up TR 3D MRA examination (B) after transvenous occlusion of the right transverse sinus clearly shows a residual fistula at the sigmoid sinus (short arrow) with downstaging of venous hypertension to anterograde sinus flow (type 1).
