Phase-contrast MR angiography of intracranial dural arteriovenous fistulae

MRI and phase-contrast MR angiography (PC MRA) were obtained in 13 patients with angiographically confirmed intracranial dural arteriovenous fistulae (DAVF). Three- and two-dimensional PC MRA was obtained with low (6-20 cm/s) and high (> 40 cm/s) velocity encoding along the three main body axes....

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Bibliographic Details
Published in:Neuroradiology 1999-07, Vol.41 (7), p.487-492
Main Authors: CELLERINI, M, MASCALCHI, M, MANGIAFICO, S, FERRITO, G. P, V.SCARDIGLI, PELLICANO, G, QUILICI, N
Format: Article
Language:English
Subjects:
Adult
Aged
Angiography, Digital Subtraction
Arteriovenous Fistula - congenital
Arteriovenous Fistula - diagnosis
Biological and medical sciences
Contrast Media
Dura Mater - blood supply
Female
Gadolinium DTPA
Humans
Image Processing, Computer-Assisted
Intracranial Arteriovenous Malformations - diagnosis
Magnetic Resonance Angiography - methods
Magnetic Resonance Imaging - methods
Male
Medical sciences
Middle Aged
Neurology
Vascular diseases and vascular malformations of the nervous system
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Summary:MRI and phase-contrast MR angiography (PC MRA) were obtained in 13 patients with angiographically confirmed intracranial dural arteriovenous fistulae (DAVF). Three- and two-dimensional PC MRA was obtained with low (6-20 cm/s) and high (> 40 cm/s) velocity encoding along the three main body axes. MRI showed focal or diffuse signal abnormalities in the brain parenchyma in six patients, dilated cortical veins in seven, venous pouches in four with type IV DAVF and enlargement of the superior ophthalmic vein in three patients with DAVF of the cavernous sinus. However, it showed none of the fistula sites and did not allow reliable identification of feeding arteries. 3D PC MRA enabled identification of the fistula and enlarged feeding arteries in six cases each. Stenosis or occlusion of the dural sinuses was detected in six of eight cases on 3D PC MRA with low velocity encoding. In six patients with type II DAVF phase reconstruction of 2D PC MRA demonstrated flow reversal in the dural sinuses or superior ophthalmic vein.
ISSN:0028-3940
1432-1920
DOI:10.1007/s002340050788