Fig 5.

In a patient with a DAVF involving the right transverse sinus, transvenous coil occlusion of the distal part of the transverse sinus and the sigmoid sinus has been performed. A residual type 2a fistula at proximal part of the right transverse sinus with arterial feeders from the right occipital artery is demonstrated at follow-up imaging. The magnified axial source image of 3D TOF MRA shows multiple hyperintense thin transosseous vessels (white arrow) in the vicinity of the arterialized right transverse sinus (black arrow).