MR imaging and MR angiography in the diagnosis of dural arteriovenous fistulas.
Intracranial DAVFs are most commonly found in the cavernous, transverse, and sigmoid sinuses. MR imaging and MR angiography can be used to screen for these lesions and determine if there is cortical venous drainage. Conventional angiography still has a major role in screening and is mandatory prior to any therapy. Spinal DAVFs are uncommon lesions seen predominantly in older men. The diagnosis can be suspected with MR imaging if a large draining vein is seen in association with swelling and enhancement of the conus and increased signal on T2-weighted images. MR angiography shows some promise in identifying the vascular anatomy of these lesions.
Panasci
D J
DJ
Division of Neuroradiology, New York University Medical Center, New York, USA.
Nelson
P K
PK
D001164:Arteriovenous Fistula / Q000175:diagnosis*; D004388:Dura Mater / Q000098:blood supply* / Q000473:pathology; D005260:Female; D006801:Humans; D018810:Magnetic Resonance Angiography; D008279:Magnetic Resonance Imaging; D008297:Male