01 noviembre 2012

NEURORADIOLOGY. Manual aspiration thrombectomy through balloon-tipped guide catheter for rapid clot burden reduction in endovascular therapy for ICA L/T occlusion

Muneer Eesa, Mohammed A. Almekhlafi, Alim P. Mitha, John H. Wong and Mayank Goyal

Introduction: Timely recanalization during endovascular procedures for acute ischemic stroke can be challenging in cases with large clot burden, such as those encountered in the terminal internal carotid T- or L-type occlusion. NeuroradiologyA Journal Devoted to Neuroimaging and Interventional Neuroradiology. Copyright © Springer-Verlag 201210.1007/s00234-012-1039-3

15 septiembre 2011

STROKE. Effect of Time to Reperfusion on Clinical Outcome of Anterior Circulation Strokes Treated With Thrombectomy. Pooled Analysis of the MERCI and Multi MERCI Trials

Raul G. Nogueira, MD; Wade S. Smith, MD, PhD; Gene Sung, MD; Gary Duckwiler, MD; Gary Walker, PhD; Robin Roberts, BSc, MSc; Jeffrey L. Saver, MD; David S. Liebeskind, MD on Behalf of the MERCI and Multi MERCI Writing Committee

Background and Purpose—Previous studies have demonstrated a strong correlation between treatment time and outcomes after intravenous recombinant tissue-type plasminogen activator. However, the temporal profile of ischemia may vary according to the level of occlusion, and it is likely that more proximal occlusions have a more variable temporal course than their distal counterparts. We sought to establish how time influences outcomes in anterior circulation proximal arterial occlusions. Stroke. 2011; 42: 3144-3149 Published online before print September 15, 2011, doi: 10.1161/​STROKEAHA.111.624163. Copyright © 2011 American Heart Association, Inc. All rights reserved.

18 agosto 2011

STROKE. Prevalence and Prognosis of Asymptomatic Vertebral Artery Origin Stenosis in Patients With Clinically Manifest Arterial Disease

Annette Compter, MD; H. Bart van der Worp, MD; Ale Algra, MD; L. Jaap Kappelle, MD on behalf of the Second Manifestations of ARTerial disease (SMART) Study Group

Background and Purpose—The risk of ischemic stroke in patients with asymptomatic vertebral artery stenosis is unknown. We examined the incidence of posterior circulation ischemic stroke in patients with asymptomatic stenosis of the vertebral artery origin (VAo). Stroke. 2011; 42: 2795-2800 Published online before print August 18, 2011, doi: 10.1161/​STROKEAHA.110.612903. Copyright © 2011 American Heart Association, Inc. All rights reserved.

01 noviembre 2012

NEUROSURGERY. Radiosurgery to the Surgical Cavity as Adjuvant Therapy for Resected Brain Metastasis

Robbins, Jared R. MD; Ryu, Samuel MD; Kalkanis, Steven MD; Cogan, Chad MS; Rock, Jack MD; Movsas, Benjamin MD; Kim, Jae Ho MD; Rosenblum, Mark MD

BACKGROUND: The standard treatment of resected brain metastasis is whole-brain radiotherapy (WBRT). To avoid the potential toxicity of WBRT and to improve local control, we have used radiosurgery alone to the surgical cavity. OBJECTIVE: To demonstrate the rates of local control, new intracranial metastasis, and overall survival using this treatment scheme without WBRT. Neurosurgery: November 2012 - Volume 71 - Issue 5 - p 937–943 doi: 10.1227/NEU.0b013e31826909f2 Research-Human-Clinical Studies. Copyright © by the Congress of Neurological Surgeons

01 octubre 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. The Characteristics and Risk Factors of Headache Development after the Coil Embolization of an Unruptured Aneurysm

G. Hwang, E.-A. Jeong, J.H. Sohn, H. Park, J.S. Bang, S.-C. Jin, B.C. Kim, C.W. Oh and O.-K. Kwon

BACKGROUND AND PURPOSE: Development of a headache after aneurysm coil embolization is not uncommon but has received little attention. The authors prospectively analyze the characteristics and risk factors of a headache after coiling in patients treated for an unruptured cerebral aneurysm. Published online before print April 5, 2012, doi: 10.3174/ajnr.A3018 AJNR 2012 33: 1676-1678 . Copyright © 2012 by American Journal of Neuroradiology

01 noviembre 2012

NEURORADIOLOGY. Endovascular treatment of proximal superior middle cerebral artery aneurysms

Boris Lubicz, Martina Pezzullo, Denis Brisbois, Olivier De Witte and Benjamin Mine

Introduction: Aneurysms superiorly located on the proximal segment of the middle cerebral artery (PMCAA) are rare and challenging to treat. No information is available regarding their management by endovascular approach. The aim of this study was to report our experience with endovascular treatment (EVT) of PMCAA. NeuroradiologyA Journal Devoted to Neuroimaging and Interventional Neuroradiology. Copyright © Springer-Verlag 201210.1007/s00234-012-1043-7

25 agosto 2011

STROKE. High-Intensity Signal on Time-of-Flight Magnetic Resonance Angiography Indicates Carotid Plaques at High Risk for Cerebral Embolism During Stenting

Shinichi Yoshimura, MD, PhD*; Kiyofumi Yamada, MD*; Masanori Kawasaki, MD, PhD; Takahiko Asano, MD; Masayuki Kanematsu, MD; Manabu Takamatsu, MD; Akira Hara , MD, PhD; Toru Iwama, MD, PhD

Background and Purpose—A major disadvantage of carotid artery stenting (CAS) compared to carotid endarterectomy is the increased risk of cerebral embolism. Thus, establishing a simple method to discriminate fragile plaques on preoperative routine examination is important. The present study examined whether high-intensity signal (HIS) in the plaque on time-of-flight (TOF) MRA, performed for screening, can discriminate plaque at high risk for cerebral embolism during CAS. 2011; 42: 3132-3137 Published online before print August 25, 2011, doi: 10.1161/​STROKEAHA.111.615708. Copyright © 2011 American Heart Association, Inc. All rights reserved.

04 agosto 2011

STROKE. Mechanical Thrombectomy in Acute Embolic Stroke. Preliminary Results With the Revive Device

Stefan Rohde, MD; Stefan Haehnel, MD; Christian Herweh, MD; Mirko Pham, MD; Sibylle Stampfl, MD; Peter A. Ringleb, MD; Martin Bendszus, MD

Background and Purpose—The purpose of this study was to evaluate the safety and technical feasibility of a new thrombectomy device (Revive; Micrus Endovascular) in the endovascular treatment of acute ischemic stroke. Stroke. 2011; 42: 2954-2956 Published online before print August 4, 2011, doi: 10.1161/​STROKEAHA.111.616763. Copyright © 2011 American Heart Association, Inc. All rights reserved.

01 noviembre 2012

NEUROSURGERY. Ruptured Intracranial Aneurysms With Small Basal Outpouching: Incidence of Basal Rupture and Results of Surgical and Endovascular Treatments

Park, Jaechan MD; Woo, Hyunjin MD; Kang, Dong-Hun MD; Kim, Yongsun MD, PhD; Baik, Seung Kug MD, PhD

BACKGROUND: Recognizing an aneurysmal basal rupture using angiographic evaluation is crucial for optimal treatment. OBJECTIVE: To evaluate the incidence of a small basal outpouching (the most common angiographic configuration suggesting a basal rupture), the incidence of a ruptured basal outpouching, and the results of surgical and endovascular treatments. Neurosurgery: November 2012 - Volume 71 - Issue 5 - p 994–1002 doi: 10.1227/NEU.0b013e31826cde9f Research-Human-Clinical Studies. Copyright © by the Congress of Neurological Surgeons

01 noviembre 2012

NEURORADIOLOGY. Italian multicenter experience with flow-diverter devices for intracranial unruptured aneurysm treatment with periprocedural complications—a retrospective data analysis

Francesco Briganti1 , Manuela Napoli1, Fabio Tortora2, Domenico Solari3, Mauro Bergui4, Edoardo Boccardi5, Enrico Cagliari6, Lucio Castellan7, Francesco Causin8, Elisa Ciceri9, Luigi Cirillo10, Roberto De Blasi11, Luigi Delehaye12, Francesco Di Paola13, Andrea Fontana14, Roberto Gasparotti15, Giulio Guidetti16, Ignazio Divenuto17, Giuseppe Iannucci18, Maurizio Isalberti19, Marco Leonardi10, Fernando Lupo20, Salvatore Mangiafico21, Andrea Manto22, Roberto Menozzi23, Mario Muto24, Nunzio Paolo Nuzzi25, Rosario Papa19, Benedetto Petralia26, Mariangela Piano5, Maurizio Resta27, Riccardo Padolecchia28, Andrea Saletti29, Giovanni Sirabella30 and Luca Piero Valvassori Bolgè5

Introduction: We report the experiences of 25 Italian centers, analyzing intra- and periprocedural complications of endovascular treatment of intracranial aneurysms using Silk (Balt Extrusion, Montmorency, France) and pipeline embolization devices (EV3 Inc, Irvine California). NeuroradiologyA Journal Devoted to Neuroimaging and Interventional Neuroradiology© Springer-Verlag 201210.1007/s00234-012-1047-3

22 septiembre 2011

STROKE. Postcontrast Susceptibility-Weighted Imaging. A Novel Technique for the Detection of Arteriovenous Shunting in Vascular Malformations of the Brain

Bharathi D. Jagadeesan, MD; Josser E. Delgado Almandoz, MD; Tammie L.S. Benzinger, MD, PhD; Christopher J. Moran, MD

Background and Purpose—The purpose of this study was to determine the utility of postcontrast susceptibility-weighted MRI (PCSWI) in the evaluation of vascular malformations of the brain (BVM). Stroke. 2011; 42: 3127-3131 Published online before print September 22, 2011, doi: 10.1161/​STROKEAHA.111.623587. Copyright © 2011 American Heart Association, Inc. All rights reserved.

01 octubre 2012

NEUROSURGERY. Safety and Efficacy of Onyx Embolization for Pediatric Cranial and Spinal Vascular Lesions and Tumors

Ashour, Ramsey MD; Aziz-Sultan, Mohammad Ali MD; Soltanolkotabi, Maryam MD; Schoeneman, Samantha E. BA; Alden, Tord D. MD; Hurley, Michael C. MD; Dipatri, Arthur J. MD; Tomita, Tadanori MD; Elhammady, Mohamed Samy MD; Shaibani, Ali MD

BACKGROUND: Although Onyx is widely used to embolize vascular lesions in adults, the safety and efficacy of this liquid embolic agent for use in children are not well studied. OBJECTIVE: To report our experience using Onyx in pediatric patients for a variety of cranial and spinal vascular lesions and tumors to determine its procedural complication rates, types, and clinical consequences and to highlight the indications for and principles of Onyx embolization in pediatric patients. Neurosurgery: October 2012 - Volume 71 - Issue 4 - p 773–784 doi: 10.1227/NEU.0b013e3182648db6 Research-Human-Clinical Studies. Copyright © by the Congress of Neurological Surgeons

01 septiembre 2012

NEURORADIOLOGY. The place for remodeling technique and stenting in the endovascular management of intracranial aneurysms: a single-center analysis from 2008 to 2010

Laurent Pierot , Girish Rajpal, Krzysztof Kadziolka and Coralie Barbe

Introduction: The objective of this study was to analyze the place for the balloon remodeling and stenting in the endovascular treatment of intracranial aneurysms as well as the impact of their use on the failure and complications rates. Analysis was conducted in a recent 3-year period (2008–2010) in a single center. NeuroradiologyA Journal Devoted to Neuroimaging and Interventional Neuroradiology. Copyright © Springer-Verlag 201110.1007/s00234-011-0975-7

06 octubre 2011

STROKE. Intracranial Hemorrhage, Outcome, and Mortality After Intra-Arterial Therapy for Acute Ischemic Stroke in Patients Under Oral Anticoagulants

Gian Marco De Marchis, MD*; Simon Jung, MD*; Giuseppe Colucci, MD; Niklaus Meier, MD; Urs Fischer, MD; Anja Weck, MD; Marie-Luise Mono, MD; Aekaterini Galimanis, MD; Heinrich P. Mattle, MD; Gerhard Schroth, MD; Jan Gralla, MD; Marcel Arnold, MD; Caspar Brekenfeld, MD

Background and Purpose—Use of intravenous tissue-type plasminogen activator (IV tPA) for acute ischemic stroke is restricted to patients with an international normalized ratio (INR) less than 1.7. However, a recent study showed increased risk of symptomatic intracranial hemorrhage after IV tPA use in patients with oral anticoagulants (OAC) even with an INR less than 1.7. The present study assessed the risk of symptomatic intracranial hemorrhage, clinical outcome, and mortality after intra-arterial therapy (IAT) in patients with and without previous use of OAC. Stroke. 2011; 42: 3061-3066 Published online before print October 6, 2011, doi: 10.1161/​STROKEAHA.111.615476. Copyright © 2011 American Heart Association, Inc. All rights reserved.

28 julio 2011

STROKE. Plaque Distribution of Stenotic Middle Cerebral Artery and Its Clinical Relevance

Wei-Hai Xu, MD*; Ming-Li Li, MD*; Shan Gao, MD; Jun Ni, MD; Li-Xin Zhou, MD; Ming Yao, MD; Bin Peng, MD; Feng Feng, MD; Zheng-Yu Jin, MD; Li-Ying Cui, MD

Background and Purpose—Microanatomy studies reveal that most penetrating branches of middle cerebral artery (MCA) arise from the dorsal–superior surface of the trunk. Using high-resolution MRI, we sought to explore the plaque distribution of MCA atherosclerosis and its clinical relevance in relation to the orifices of penetrating arteries. Stroke. 2011; 42: 2957-2959 Published online before print July 28, 2011, doi: 10.1161/​STROKEAHA.111.618132. Copyright © 2011 American Heart Association, Inc. All rights reserved.