18 results with keyword: 'mr imaging of dural arteriovenous fistulas draining into cerebellar cortical veins'
RESULTS: In all patients, MR images showed high signal intensity on T2-weighted images and peripheral enhancement on gadolinium-enhanced T1-weighted images at the inferior aspect of
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The fistulas located at the skull base are always sup- plied by the posterior meningeal branch of the vertebral artery (Figs. 1 C and 2C); external carotid
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Spinal vascular malformations: MR and DSA findings Patient Age, y/Sex MR Imaging MR Angiography DSA Cord* Subarachnoid Space† Coronal Veins‡ Medullary Vein Vascular
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MR imaging findings included flow void cluster, engorged ophthalmic vein/proptosis, white matter hyperintensity, intracranial hemor- rhage, dilated leptomeningeal or medullary
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Enhancement of the coronal venous plexus increased T2 signal, and flow voids were seen in 48% of patients with spinal dural AVFs, and the combination of the former two findings was
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RESULTS: Enhanced 3D MP-RAGE and T1-weighted SE images had higher diagnostic accuracy higher than nonenhanced images, especially when retrograde drainage involved cerebral
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Concerning the DSA appearance, the classic SDAVFs are typically of the slow-flow type, supplied by radiculomeningeal arteries and draining into radicular veins, which directly con-
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The Borden classification stratifies the lesions into 3 types according to the venous drain- age pattern (dural venous sinus [types I and II] versus cortical vein [type III] and
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In 6 patients, a prolonged (17- to 29-minute) single middle meningeal artery injection was sufficient to occlude the venous site of the fistula with retrograde occlusion of
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IIb fistulas (drainage into a sinus then reflux into cortical veins only), 4 cases were type IIa ⫹ b (drainage into a sinus then reflux into cortical veins and other sinuses), 8
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B , Deep-seated arteriovenous shunt (asterisk) draining into an enlarged vein of Galen and straight sinus (open arrow) without dural obstruction. C , Proximal dural obstruction
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The endovascular neurosurgical procedures included 54 aneurysms coiled, 4 cerebral arteriovenous malformation embolization, 2 dural arteriovenous fistulas embolization, 2
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Aggressive cranial dural arteriovenous fistula (DAVF) in a 35-year-old female, presenting with headache was missed diagnosis from CT scan (A) Noncontrast enhanced Computed Tomography
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Box and whisker plot show mean relative cerebral blood volume (rCBV) ratio in control subjects and in patients with dural arteriovenous fistulas (DAVF) with retrograde cortical
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A 43-year-old woman (Fig 3) presented with a left parietal hematoma; angiography showed a DAVF supplied by right and left middle meningeal arteries with drainage to cor- tical veins
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In the three patients with grade 3 lesions in whom no trans- venous route to the fistula site existed, definitive treatment was by transarterial embolization with liquid adhesives
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In addition to the fistula with dilated veins ( small black arrows ), DSA shows an anterior spinal cord supplying artery ( white arrow ) originating from the same segmental vessel.. E
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BACKGROUND AND PURPOSE: Tortuous, engorged veins can be identified on the venous phase of the brain circulation in patients with venous congestion related to an intracranial
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