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ABSTRACT


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

01 diciembre 2012

NEUROSURGERY. Revisiting Angioplasty Without Stenting for Symptomatic Intracranial Atherosclerotic Stenosis After the Stenting and Aggressive Medical Management for Preventing Recurrent Stroke in Intracranial Stenosis (SAMMPRIS) Study

Dumont, Travis M. MD; Kan, Peter MD, MPH; Snyder, Kenneth V. MD, PhD; Hopkins, L. Nelson MD; Siddiqui, Adnan H. MD, PhD; Levy, Elad I. MD, FACS, FAHA

BACKGROUND: The Stenting and Aggressive Medical Management for Preventing Recurrent Stroke in Intracranial Stenosis (SAMMPRIS) study stopped recruiting patients because of higher-than-expected perioperative morbidity of primary stenting in patients with symptomatic intracranial stenosis. An alternative treatment, submaximal angioplasty without stenting, performed concurrently with SAMMPRIS, may offer revascularization benefits with a lower incidence of stenting-related risks. OBJECTIVE: To present the results of a consecutive case series of primary submaximal angioplasty procedures performed for symptomatic severe atherosclerotic intracranial stenosis refractory to medical treatment. Neurosurgery: December 2012 - Volume 71 - Issue 6 - p 1103–1110 doi: 10.1227/NEU.0b013e318271bcb8. Copyright © by the Congress of Neurological Surgeons

01 septiembre 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. Flow Diverters Can Occlude Aneurysms and Preserve Arterial Branches: A New Experimental Model

T.E. Darsaut, F. Bing, I. Salazkin, G. Gevry and J. Raymond

BACKGROUND AND PURPOSE: FDs are new intracranial stents designed to occlude aneurysms while preserving flow to jailed arterial branches. We tested this fundamental principle in a new aneurysm model. Published online before print May 3, 2012, doi: 10.3174/ajnr.A3075 AJNR 2012 33: 2004-2009 . Copyright © 2012 by American Journal of Neuroradiology

01 diciembre 2012

JOURNAL OF ENDOVASCULAR THERAPY. Drug-Eluting Balloon for Treatment of In-Stent Restenosis After Carotid Artery Stenting: Preliminary Report

Piero Montorsi , MD; Stefano Galli , MD; Paolo M. Ravagnani , MD; Daniela Trabattoni , MD; Franco Fabbiocchi , MD; Alessandro Lualdi , MD; Giovanni Teruzzi , MD; Gianluca Riva , Sarah Troiano , MD; and Antonio L. Bartorelli , MD

Purpose : To evaluate the safety and efficacy of drug-eluting balloons (DEB) for the treatment of in-stent restenosis (ISR) after carotid artery stenting (CAS).

01 diciembre 2012

NEUROSURGERY. Endovascular Therapy With MCP-1 Releasing Coils Promotes Inflammatory Intra-aneurysmal Tissue Healing

Komotar, Ricardo J.; Starke, Robert M.; Connolly, E. Sander

Inflammation is a significant element of the pathogenesis of cerebral aneurysm formation and progression. Key processes include macrophages infiltration, smooth muscle cell differentiation and ultimately apoptosis, as well as upregulation of cytokines, adhesion molecules, and matrix remodeling genes.1 Following intravascular injury, monocyte chemoattractant protein-1 (MCP-1) induces monocytes to leave the bloodstream. This is an elemental aspect of atherosclerosis and MCP-1 over-expression has been found in abdominal aortic aneurysms, intracranial aneurysms and subarachnoid hemorrhage.2-4 In experimental models, MCP-1 was upregulated in aneurysm walls, and MCP-1 knockout mice demonstrated decreased expression of MMPs and inhibition of aneurysmal progression.5-6. Neurosurgery: December 2012 - Volume 71 - Issue 6 - p N10–N11 doi: 10.1227/01.neu.0000423039.66817.d7. Copyright © by the Congress of Neurological Surgeons

01 septiembre 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. Recanalization of Large Intracranial Vessels Using the Penumbra System: A Single-Center Experience

M.-N. Psychogios, A. Kreusch, K. Wasser, A. Mohr, K. Gröschel and M. Knauth

BACKGROUND AND PURPOSE: The PS is an innovative mechanical device designed to recanalize large-vessel occlusions by thrombus aspiration. The purpose of this study was to evaluate the effectiveness and neurologic outcome of patients treated with the PS in the setting of acute ischemic stroke. Published online before print March 29, 2012, doi: 10.3174/ajnr.A2990 AJNR 2012 33: 1488-1493. Copyright © 2012 by American Journal of Neuroradiology

01 diciembre 2012

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. A Validated Risk Score to Predict Outcomes after Carotid Stenting

Matthias Hoke, MD, Elmir Ljubuncic, MD, Clemens Steinwender, MD, Kurt Huber, MD, Erich Minar, MD, Renate Koppensteiner, MD, Franz Leisch, MD, Petra Dick, MD, Klaus Kerschner, MD, Martin Schillinger, MD, Robert Hofmann, MD and Alexander Niessner, MD, MSc

Background—Periprocedural outcome has been extensively investigated in patients undergoing carotid artery stenting. However, risk factors contributing to long-term mortality have not been comprehensively assessed. We aimed to establish a validated clinical risk score for long-term mortality in patients after carotid artery stenting.

17 julio 2012

STROKE. Intravenous Thrombolysis in Ischemic Stroke Patients With Isolated Homonymous Hemianopia

Daniel Strbian, MD, PhD; Niaz Ahmed, MD, PhD; Nils Wahlgren, MD, PhD; Markku Kaste, MD, PhD; Turgut Tatlisumak, MD, PhD on behalf of SITS Investigators

Background and Purpose—Hemianopia can cause considerable disability. Only scarce data are available for ischemic stroke patients presenting with isolated homonymous hemianopia and being treated with intravenous thrombolysis. We analyzed outcome of such patients registered in the Safe Implementation of Thrombolysis in Stroke–International Stroke Thrombolysis Register (SITS-ISTR). Stroke. 2012; 43: 2695-2698 Published online before print July 17, 2012, doi: 10.1161/​STROKEAHA.112.658435. Copyright © 2012 American Heart Association, Inc. All rights reserved.

01 octubre 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. Endovascular Treatment of Ruptured Intracranial Aneurysms: Factors Affecting Midterm Quality Anatomic Results: Analysis in a Prospective, Multicenter Series of Patients (CLARITY)

L. Pierot, C. Cognar, R. Anxionnat and F. Ricolfi for the CLARITY Investigators

BACKGROUND AND PURPOSE: Recanalization is 1 drawback of the EVT of intracranial aneurysms. An analysis of the factors affecting the midterm anatomic results after EVT of ruptured intracranial aneurysms in a large multicenter series (CLARITY) is presented. Published online before print April 19, 2012, doi: 10.3174/ajnr.A3003 AJNR 2012 33: 1475-1480 . Copyright © 2012 by American Journal of Neuroradiology

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