The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Shinzo Oota - One of the best experts on this subject based on the ideXlab platform.
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Endovascular treatment for Dural Arteriovenous Fistula of the anterior condylar vein with unusual venous drainage: report of two cases
2015Co-Authors: Shuichi Tanoue, Katsuya Goto, Shinzo OotaAbstract:Fistula of the anterior condylar vein in which the patients presented with rare clinical symptoms related to unusual venous drainage patterns. The first patient had progressive myelopathy and showed venous drainage into the anterior spinal vein. The second had ocular signs and showed ret-rograde drainage into the superior ophthalmic vein. Com-plete cure was attained by transarterial glue injection in the first patient and transvenous coil embolization in the latter. Dural Arteriovenous Fistula of the anterior condylar vein is an important, but rare, subgroup of posterior fossa Dural Arteriovenous Fistula. This lesion tends to be confused with marginal sinus Dural Arteriovenous Fistula, and, to our knowledge, there are only 4 pre-vious reports in the literature (1–4). In most of the reported cases, the Dural Arteriovenous Fistula drained into the jugular bulb and only presented with pulse-synchronous tinnitus. Here we report 2 cases of Dural Arteriovenous Fistula of the anterior condylar vein with unusual venous drainage. Clinically, one patient showed myelopathy, whereas the other showed ocular manifestations. The consideration of therapeutic strategy was made on the key points of establishing accurate image diagnosis, the functional anatomy of the anterior condylar vein, and the tactics for successful endovascular treatment based on the specific anatomical features of each patient
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endovascular treatment for Dural Arteriovenous Fistula of the anterior condylar vein with unusual venous drainage report of two cases
American Journal of Neuroradiology, 2005Co-Authors: Shuichi Tanoue, Katsuya Goto, Shinzo OotaAbstract:We report 2 patients with Dural Arteriovenous Fistula of the anterior condylar vein in which the patients presented with rare clinical symptoms related to unusual venous drainage patterns. The first patient had progressive myelopathy and showed venous drainage into the anterior spinal vein. The second had ocular signs and showed retrograde drainage into the superior ophthalmic vein. Complete cure was attained by transarterial glue injection in the first patient and transvenous coil embolization in the latter.
Servet Inci - One of the best experts on this subject based on the ideXlab platform.
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Treatment of a superior sagittal sinus Dural Arteriovenous Fistula with Onyx: technical case report.
Neurosurgery, 2006Co-Authors: Anil Arat, Servet InciAbstract:Objective The endovascular treatment of a complex superior sagittal sinus Dural Arteriovenous Fistula with ethylene vinyl alcohol copolymer (Onyx) in one session is described. Clinical presentation A 54-year-old man presented with dizziness and a bruit. A cerebral angiogram demonstrated a superior sagittal sinus Dural Arteriovenous Fistula with a patent superior sagittal sinus that was supplied via multiple branches of the external carotid arteries bilaterally and the left anterior and middle cerebral arteries. Drainage was mainly through the superior sagittal sinus and, only in part, retrogradely through the cortical veins. A decision was made to proceed with endovascular treatment followed by surgery. Intervention Transarterial injection of one pedicle of middle meningeal artery on both sides with Onyx resulted in complete obliteration of the Dural supply and some of the pial supply to the malformation without complications. The superior sagittal sinus remained patent. Based on this result, surgical treatment was cancelled. The residual pial supply had disappeared by the 10-month angiographic follow-up examination and the patient remained neurologically intact and without symptoms. Conclusion Definitive treatment may be attained with Onyx in Dural Arteriovenous Fistulas. The potential of Onyx for use as a permanent embolic agent in Dural Arteriovenous Fistulae needs to be investigated.
Michael P Marks - One of the best experts on this subject based on the ideXlab platform.
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detection of cortical venous drainage and determination of the borden type of Dural Arteriovenous Fistula by means of 3d pseudocontinuous arterial spin labeling mri
American Journal of Roentgenology, 2016Co-Authors: Shalini A Amukotuwa, Michael P Marks, Jeremy J Heit, Nancy J Fischbein, Roland BammerAbstract:OBJECTIVE. The risk of intracranial Dural Arteriovenous Fistula is linked to its pattern of venous drainage (Borden type), in particular the presence of cortical venous drainage. The purpose of this study was to assetss the accuracy of 3D pseudocontinuous arterial spin-labeling (ASL) MRI for noninvasive delineation of venous drainage. MATERIALS AND METHODS. This retrospective study included 34 patients with a Dural Arteriovenous Fistula who had undergone both digital subtraction angiography (DSA) and 3D pseudocontinuous ASL MRI. Two neuroradiologists blinded to the DSA results independently assessed ASL images for the presence of cortical vein hyperintensity (cortical venous drainage) and the distribution of venous hyperintensity (Borden type). DSA was used as the reference standard. The sensitivity and specificity of 3D pseudocontinuous ASL MRI for the detection of cortical venous drainage were determined. Intermodality and interobserver agreement for Borden type was determined by use of the weighted kap...
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endovascular treatment of a tentorial Dural Arteriovenous Fistula
Neurosurgical Focus, 2014Co-Authors: Omar Choudhri, Michael P MarksAbstract:Tentorial Dural Arteriovenous Fistulae are rare intracranial Fistulae, in which the Fistula pocket is present within the leaves of tentorium cerebelli. These tentorial Fistulae can be rarely present near the galenic complex, where they can engorge the deep venous system and cause symptoms of venous hypertension. We present an interesting case of endovascular treatment of a galenic tentorial Dural Arteriovenous Fistula in a patient with headaches and imbalance. The Fistula was accessed through the artery of Davidoff and Schecter from the posterior cerebral artery supplying the Fistula. The Fistula was completely embolized using Onyx and with preservation of vein of Galen. The video can be found here: http://youtu.be/igX2X5tfvrg.
Kangdu Liu - One of the best experts on this subject based on the ideXlab platform.
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quantifying the cerebral hemodynamics of Dural Arteriovenous Fistula in transverse sigmoid sinus complicated by sinus stenosis a retrospective cohort study
American Journal of Neuroradiology, 2017Co-Authors: Wanyuo Guo, Chengchia Lee, Chungjung Lin, Huaiche Yang, Wenyuh Chung, Kangdu LiuAbstract:BACKGROUND AND PURPOSE: Sinus stenosis occasionally occurs in Dural Arteriovenous Fistulas. Sinus stenosis impedes venous outflow and aggravates intracranial hypertension by reversing cortical venous drainage. This study aimed to analyze the likelihood of sinus stenosis and its impact on cerebral hemodynamics of various types of Dural Arteriovenous Fistulas. MATERIALS AND METHODS: Forty-three cases of Dural Arteriovenous Fistula in the transverse-sigmoid sinus were reviewed and divided into 3 groups: Cognard type I, type IIa, and types with cortical venous drainage. Sinus stenosis and the double peak sign (occurrence of 2 peaks in the time-density curve of the ipsilateral drainage of the internal jugular vein) in Dural Arteriovenous Fistula were evaluated. “TTP” was defined as the time at which a selected angiographic point reached maximum concentration. TTP of the vein of Labbe, TTP of the ipsilateral normal transverse sinus, trans-Fistula time, and trans-stenotic time were compared across the 3 groups. RESULTS: Thirty-six percent of type I, 100% of type IIa, and 84% of types with cortical venous drainage had sinus stenosis. All sinus stenosis cases demonstrated loss of the double peak sign that occurs in Dural Arteriovenous Fistula. Trans-Fistula time (2.09 seconds) and trans-stenotic time (0.67 seconds) in types with cortical venous drainage were the most prolonged, followed by those in type IIa and type I. TTP of the vein of Labbe was significantly shorter in types with cortical venous drainage. Six patients with types with cortical venous drainage underwent venoplasty and stent placement, and 4 were downgraded to type IIa. CONCLUSIONS: Sinus stenosis indicated dysfunction of venous drainage and is more often encountered in Dural Arteriovenous Fistula with more aggressive types. Venoplasty ameliorates cortical venous drainage in Dural Arteriovenous Fistulas and serves as a bridge treatment to stereotactic radiosurgery in most cases.
A G Wang - One of the best experts on this subject based on the ideXlab platform.
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paradoxical worsening with superior ophthalmic vein thrombosis after gamma knife radiosurgery for Dural Arteriovenous Fistula of cavernous sinus a case report suggesting the mechanism of the phenomenon
Eye, 2006Co-Authors: A G Wang, H M WuAbstract:Paradoxical worsening with superior ophthalmic vein thrombosis after gamma knife radiosurgery for Dural Arteriovenous Fistula of cavernous sinus: a case report suggesting the mechanism of the phenomenon
