Fig 2.

Traumatic arteriovenous fistula caused by detonation with propelled metal fragments (asterisks) penetrating the neck. A, Left vertebral arteriovenous fistula is identified with both ascending and descending venous drainage. B, There is steal phenomenon represented by filling of the fistula through the right vertebral artery. C, Fistula trapping has been performed with proximal (arrows) and distal (circle) balloon detachment. Note occlusion of the fistula with re-establishment of normal flow in the right vertebral artery.