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ABSTRACT


01 enero 2012

NEUROSURGERY. Temporary Endovascular Bypass: Rescue Technique During Mechanical Thrombolysis

Gonzalez, L. Fernando MD; Jabbour, Pascal MD; Tjoumakaris, Stavropoula MD; Teufack, Sonia MD; Gordon, David MD; Dumont, Aaron MD; Rosenwasser, Robert MD

BACKGROUND: The goal of mechanical thrombolysis is to re-establish blood flow to a completely occluded artery in patients who fail intravenous thrombolytic therapy or who are outside the therapeutic window.

01 febrero 2012

NEUROSURGERY. Onyx Embolization of Extradural Spinal Arteriovenous Malformations With Intradural Venous Drainage

Lanzino, Giuseppe MD; D Urso, Pietro Ivo M; Kallmes, David F. MD; Cloft, Harry J. MD, PhD

BACKGROUND: Extradural arteriovenous malformations (AVMs) are uncommon vascular malformations of the spine. They are characterized by an arteriovenous communication (localized in the paraspinal soft tissues and the epidural venous plexus) that may have retrograde intradural venous drainage. Surgical treatment of extradural AVMs can be challenging because of the common location ventral to the dural sac and the presence of arterialized venous lakes.

01 febrero 2012

NEUROSURGERY. Comparative Evaluation of Percutaneous Retrogasserian Glycerol Rhizolysis and Radiofrequency Thermocoagulation Techniques in the Management of Trigeminal Neuralgia

Udupi, Bidkar Prasanna MD; Chouhan, Rajendra S. MD; Dash, Hari H. MD; Bithal, Parmod K. MD; Prabhakar, Hemanshu MD

BACKGROUND: Among the percutaneous procedures for the treatment of trigeminal neuralgia, percutaneous anhydrous glycerol rhizolysis (PRGR) and radiofrequency (RF) ablation of trigeminal neuralgia have stood the test of time.

01 febrero 2012

NEUROSURGERY. Merci Retrievers as Access Adjuncts for Reperfusion Catheters: The Grappling Hook Technique

Hui, Ferdinand K. MD; Hussain, Muhammad S. MD; Spiotta, Alejandro MD; Bhalla, Tarun MD, PhD; Toth, Gabor MD; Moskowitz, Shaye I. MD, PhD; Elgabaly, Mohamed MD; Sivapatham, Thinesh MD; Rasmussen, Peter A. MD

BACKGROUND: Expeditious, stable access in acute ischemic stroke is foundational for mechanical revascularization. Proximal vascular tortuosity and unfavorable anatomy may impede the access necessary for revascularization, particularly when large-caliber catheters are used. We describe an approach using the Merci retriever to gain stable catheter access for aspiration.

01 febrero 2012

NEURORADIOLOGY. Endovascular treatment of dural arteriovenous fistula involving marginal sinus with emphasis on the routes of transvenous embolization

Hyun Seok Choi, Dong Ik Kim, Byung Moon Kim, Dong Joon Kim, Sung Soo Ahn

Introduction: Dural arteriovenous fistulas involving marginal sinus are relatively rare. Transvenous embolization is a curative treatment of choice for them. Regional anatomy surrounding the marginal sinus comprises complex craniocervical bony structures and abundant venous interconnections. Therefore, dural arteriovenous fistulas involving marginal sinus may have various routes for a transvenous approach. The purpose of this article was to analyze endovascular treatment of marginal sinus dural arteriovenous fistulas with emphasis on the routes of transvenous embolization.

01 enero 2012

NEURORADIOLOGY. Vein of Galen aneurysmal malformation: combined transvenous and transarterial method using a “kissing microcatheter technique”

Dan Meila, Raphaela Hannak, Axel Feldkamp, Martin Schlunz-Hendann, Andreas Mangold, Collin Jacobs, Karsten Papke, Friedhelm Brassel

Introduction: Vein of Galen aneurysmal malformation (VGAM) is a severe pediatric neurovascular disease. Children often present with congestive heart failure in the neonatal period. In the last decades, endovascular treatment became the first therapeutic option. The purpose of this study is to report our results in the treatment of VGAM with a combined transvenous and transarterial method in the last ten years.

01 enero 2012

NEURORADIOLOGY. Complication rates using balloon-expandable and self-expanding stents for the treatment of intracranial atherosclerotic stenoses

Wiebke Kurre, Friedhelm Brassel, Roland Brüning, Jan Buhk, Bernd Eckert, Susanna Horner, Michael Knauth, Thomas Liebig, Jana Maskova, Dirk Mucha, Vojtech Sychra, Matthias Sitzer, Michael Sonnberger, Marc Tietke, Johannes Trenkler, Bernd Turowski, Joachim Berkefeld

Introduction: Using balloon-expandable stents (BES) for treatment of intracranial stenoses, high inflation pressures and rigidity of the device are regarded as major drawbacks limiting feasibility and safety of the procedure. Self-expanding stents (SES) were developed to facilitate lesion access and to allow for less aggressive dilatation. We analyzed data of the INTRASTENT multicentric registry to assess whether self-expanding stents significantly reduced peri-interventional complication rates.

01 enero 2013

JOURNAL OF NEUROSURGERY. Symptomatic patients with intraluminal carotid artery thrombus: outcome with a strategy of initial anticoagulation

Ananth K. Vellimana, M.D., Yasha Kadkhodayan, M.D., Keith M. Rich, M.D., DeWitte T. Cross III, M.D., Christopher J. Moran, M.D., Allyson R. Zazulia, M.D., Jin-Moo Lee, M.D., Ph.D, Michael R. Chicoine, M.D., Ralph G. Dacey Jr., M.D., Colin P. Derdeyn, M.D, and Gregory J. Zipfel, M.D.

Object: The aim of this study was to define the optimal treatment for patients with symptomatic intraluminal carotid artery thrombus (ICAT).

01 enero 2013

JOURNAL OF NEUROSURGERY. Long-term outcome of Gamma Knife stereotactic radiosurgery for arteriovenous malformations graded by the Spetzler-Martin classification

Michael T. Koltz, M.D., Adam J. Polifka, M.D., Andreas Saltos, M.D2, Robert G. Slawson, M.D., Young Kwok, M.D., E. Francois Aldrich, M.B., Ch.B., M.Med., F.C.S., and J. Marc Simard, M.D., Ph.D

Object. The object of this study was to assess outcomes in patients with arteriovenous malformations (AVMs) treated by Gamma Knife stereotactic radiosurgery (SRS); lesions were stratified by size, symptomatology, and Spetzler-Martin (S-M) grade.

01 diciembre 2012

NEUROSURGERY. Long-term Results of Gamma Knife Surgery for Partially Embolized Arteriovenous Malformations

Schwyzer, Lucia MD; Yen, Chun-Po MD; Evans, Avery MD; Zavoian, Sebastian MD; Steiner, Ladislau MD, PhD

BACKGROUND: The effectiveness and risk of Gamma Knife surgery (GKS) in the management of partially embolized cerebral arteriovenous malformations (AVMs) remain to be elucidated. OBJECTIVE: To evaluate the long-term imaging and clinical outcomes of GKS in AVM patients who had undergone previous partial embolization and compare the results with patients treated with GKS alone. Neurosurgery: December 2012 - Volume 71 - Issue 6 - p 1139–1148 doi: 10.1227/NEU.0b013e3182720280. Copyright © by the Congress of Neurological Surgeons

01 diciembre 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. Pipeline Embolization Device in Aneurysmal Subarachnoid Hemorrhage

J.P. Cruz, C. O Kelly, M. Kelly, J.H. Wong, W. Alshaya, A. Martin, J. Spears and T.R. Marotta

BACKGROUND AND PURPOSE: The PED is an FDS designed for the treatment of intracranial aneurysms. Data regarding the use of this device in acute or subacute aSAH is limited to a few case reports or small series. We aimed to demonstrate the feasibility of using an FDS, the PED, for the treatment of ruptured intracranial aneurysms with challenging morphologies. Published online before print October 11, 2012, doi: 10.3174/ajnr.A3380 AJNR 2012 . Copyright © 2013 by American Journal of Neuroradiology

01 diciembre 2012

NEUROSURGERY. Microcatheter Looping Technique for Coil Embolization of Complex Configuration Middle Cerebral Artery Aneurysms

Cho, Young Dae MD; Kang, Hyun-Seung MD, PhD; Kim, Jeong Eun MD, PhD; Son, Young Je MD, PhD; Lee, Jong Young MD; Lee, Seung Jin MD; Seo, Jung Hwa MD; Han, Moon Hee MD, PhD

BACKGROUND: Protection techniques using stents or microcatheters allow treatment of aneurysms with complex configurations by coil embolization. However, the application of these techniques is occasionally limited in wide-neck middle cerebral artery (MCA) aneurysms with acute angularity of the efferent branch vessel. OBJECTIVE: We describe a looping technique for passage of a microcatheter and microwire into the acutely angled efferent branch vessel without navigating the system through the aneurysm lumen. Neurosurgery: December 2012 - Volume 71 - Issue 6 - p 1185–1191 doi: 10.1227/NEU.0b013e318271ee1a. Copyright © by the Congress of Neurological Surgeons

01 diciembre 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. Treatment of Acute Vertebrobasilar Occlusion Using Thrombectomy with Stent Retrievers: Initial Experience with 18 Patients

M. Espinosa de Rueda, G. Parrilla, J. Zamarro, B. García-Villalba, F. Hernández and A. Moreno

BACKGROUND AND PURPOSE: Acute vertebrobasilar occlusion is an ominous disease with few proved effective treatments. Experience with stent retrievers is scarce and limited to combined therapies (stent retrievers associated with previous intravenous fibrinolysis, intra-arterial thrombolysis, or other mechanical devices). We present our experience with 18 patients treated with direct thrombectomy by using stent retrievers. Published online before print November 1, 2012, doi: 10.3174/ajnr.A3329 AJNR 2012 . Copyright © 2013 American Society of Neuroradiology

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