MR angiography of vascular malformations.

Magnetic resonance angiography (MRA) plays an important role in the evaluation of cerebrovascular disease. This is especially true in the diagnosis and management of cerebral vascular malformations. Both time-of-flight and phase contrast MRA techniques have proved useful for the imaging of all types of cerebral vascular malformations including AVMs, dural fistulas, cavernous malformations, and venous angiomas. The role of MRA in the evaluation of these lesions is discussed.