Angiography in the evaluation of head and neck trauma.

Cerebrovascular trauma is a heterogeneous group of injuries including arterial dissections, traumatic aneurysms, arteriovenous fistulas, and venous occlusions. Detection of vascular trauma may be difficult because of variations in clinical presentation; however, in recent years, increased awareness and understanding of these injuries has improved the ability to detect and subsequently treat many lesions. Despite advances in other imaging modalities, angiography remains the primary radiographic tool used in the evaluation of traumatic vascular lesions.