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ESTUDIOS


01 enero 2011

AJNR. Neuroform Stent−Assisted Coiling of Unruptured Intracranial Aneurysms: Short- and Midterm Results from a Single-Center Experience with 68 Patients

I.L. Maldonado P. Machi V. Costalat T. Mura A. Bonafe

Intracranial stent placement assists in the coiling of wide-neck aneurysms and aids in reconstructing and protecting the parent artery. In this study, we analyze our experience in the use of the Neuroform system. AJNR Am J Neuroradiol 2011 32: 31-136 originally published online on October 21, 2010, 10.3174/ajnr.A2245.

01 enero 2011

AJNR. Quantitative Characterization of the Hemodynamic Environment in Ruptured and Unruptured Brain Aneurysms

.R. Cebral, F. Mut, J. Weir, and C. Putman

Hemodynamics are thought to play an important role in the mechanisms of aneurysm pathogenesis, progression, and rupture. The purpose of this study was to define quantitative measures related to qualitative flow characteristics previously analyzed and to investigate their relationship to aneurysm rupture. AJNR Am J Neuroradiol 2011 32: 145-151originally published online on December 2, 2010, 10.3174/ajnr.A2419.

01 julio 2011

AJNR. Impact of Retrievable Stents on Acute Ischemic Stroke Treatment

C. Brekenfeld, G. Schroth, P. Mordasini, U. Fischer, M.-L. Mono, A. Weck, M. Arnold, M. El-Koussy, and J. Gralla

Retrievable stents combine the high recanalization rate of stents and the capability of removing the thrombus offered by mechanical thrombectomy devices. We hypothesized that retrievable stents shorten time to recanalization in the multimodal approach for endovascular stroke treatment. AJNR Am J Neuroradiol 2011 32: 1269-1273originally published online on May 12, 2011, 10.3174/ajnr.A2494.

01 noviembre 2011

AJNR. Perianeurysmal Brain Inflammation after Flow-Diversion Treatment

J. Berge, T. Tourdias, J.-F. Moreau, X. Barreau, and V. Dousset

Flow-diverter stents are an alternative treatment for challenging and recurrent aneurysms. Thrombosis of the sac is thought to induce perianeurysmal brain inflammation, but such phenomena have never been studied in flow-diverter devices. We developed imaging data to explain the clinical exacerbation of symptoms after flow-diversion treatment. AJNR Am J Neuroradiol 2011 32: 1930-1934originally published online on September 22, 2011, 10.3174/ajnr.A2710.

01 diciembre 2011

AJNR. Wingspan Stents for the Treatment of Symptomatic Atherosclerotic Stenosis in Small Intracranial Vessels: Safety and Efficacy Evaluation

L. Zhang, Q. Huang, Y. Zhang, J. Liu, B. Hong, Y. Xu, and W. Zhao

Until now, endovascular treatment of symptomatic atherosclerotic stenosis in small intracranial arteries (< = 2.5 mm) was limited. We evaluated the safety and efficacy of the treatment by using Wingspan stents in arteries of this caliber. AJNR Am J Neuroradiol 2012 33: 343-347originally published online on December 15, 2011, 10.3174/ajnr.A2772.

01 noviembre 2011

AJNR. Stenting from the Vertebral Artery to the Posterior Inferior Cerebellar Artery

M.J. Kim, J. Chung, S.L. Kim, H.G. Roh, B.J. Kwon, B.-s. Kim, T.H. Kim, B.M. Kim, and Y.S. Shin

There are only a few reports on the feasibility and safety of stents used in the PICA, and clinical and angiographic follow-up results have not been fully addressed. We report our experiences of treating PICA origin or vertebral arteryPICA lesions by using self-expanding stents as adjuvant or rescue therapy with angiographic and clinical follow-up results. AJNR Am J Neuroradiol 2012 33: 348-352originally published online on November 3, 2011, 10.3174/ajnr.A2741.

01 abril 2012

AJNR. Stent-Assisted Coiling of Intracranial Bifurcation Aneurysms Leads to Immediate and Delayed Intracranial Vascular Angle Remodeling

B. Gao, M.I. Baharoglu, A.D. Cohen, and A.M. Malek

Wide-neck bifurcating aneurysms are increasingly treated with intracranial stent-assisted coiling by using shape-memory alloy microstents. We sought to investigate the short- and long-term effects of intracranial stent implantation on the geometry and angular conformation of the stent-coiled vascular bifurcation. AJNR Am J Neuroradiol 2012 33: 649-654originally published online on December 22, 2011, 10.3174/ajnr.A2841.

01 octubre 2011

JNS. Endovascular treatment of symptomatic intracranial stenosis with the Wingspan stent system and Gateway PTA balloon: a multicenter series of 60 patients with acute and midterm results: Clinical article

Vincent Costalat, M.D., Igor Lima Maldonado, M.D., Jean-François Vendrell, M.D., Carlos Riquelme, M.D., Paolo Machi, M.D., Charles Arteaga, M.D., Ph.D., Francis Turjman, M.D., Ph.D., Hubert Desal, M.D., Ph.D., Jacques Sedat, M.D., Ph.D., and Alain Bonafé, M.D., Ph.D.

The limitations of the medical management of symptomatic intracranial arterial stenosis (SIAS) have encouraged the development of new strategies, such as endovascular treatment. In this study, the authors report and analyze a series of 63 endovascular procedures in which the Wingspan stent system was used. JNS October 2011, Volume 115, Issue 4. J Neurosurg 115:686–693, 2011

01 enero 2012

JNS. The Barrow Ruptured Aneurysm Trial

Giuseppe Lanzino, M.D.

The purpose of this ongoing study is to compare the safety and efficacy of microsurgical clipping and endovascular coil embolization for the treatment of acutely ruptured cerebral aneurysms and to determine if one treatment is superior to the other by examining clinical and angiographic outcomes. The authors examined the null hypothesis that no difference exists between the 2 treatment modalities in the setting of subarachnoid hemorrhage (SAH). The current report is limited to the clinical results at 1 year after treatment. JNS January 2012, Volume 116, Issue 1. J Neurosurg 116:135–144, 2012

01 enero 2011

AJNR. Treatment of Brain Arteriovenous Malformations by Double Arterial Catheterization with Simultaneous Injection of Onyx: Retrospective Series of 17 Patients

D.G. Abud, R. Riva, G.S. Nakiri, F. Padovani, M. Khawaldeh, and C. Mounayer

The use of Onyx in the treatment of intracranial AVMs has increased the cure rate of endovascular embolization compared with the use of liquid adhesive agents. Inadvertent occlusion of the draining veins before the complete exclusion of the nidus constitutes a major risk of bleeding. We report a case series using the technique of double simultaneous arterial catheterization as an approach to achieve the complete exclusion of the nidus before reaching the venous drainage, through a more controlled hemodynamic filling. AJNR Am J Neuroradiol 2011 32: 152-158originally published online on October 21, 2010, 10.3174/ajnr.A2247.

07 abril 2011

STROKE. Five-Year Rehospitalization Outcomes in a Cohort of Patients With Acute Ischemic Stroke

Kamakshi Lakshminarayan, MD, PhD; Candace Schissel, MPH; David C. Anderson, MD; Gabriela Vazquez, PhD; David R. Jacobs Jr, PhD; Mustapha Ezzeddine, MD; Russell V. Luepker, MD, MS; Beth A. Virnig, PhD, MPH

Background and Purpose—The purposes of this study were to track mortality and rehospitalizations over 5 years poststroke in a stroke cohort (SC) and compare long-term risks of complications to a matched nonstroke cohort (NSC). Stroke. 2011; 42: 1556-1562 Published online before print April 7. Copyright © 2011 American Heart Association, Inc. All rights reserved. Print ISSN: 0039-2499. Online ISSN: 1524-4628.

01 noviembre 2011

AJNR. Neurovascular In-Stent Stenoses: Treatment with Conventional and Drug-Eluting Balloons

Z. Vajda, T. Güthe, M. Aguilar Perez, A. Heuschmid, E. Schmid, H. Bäzner, and H. Henkes

ISRs remain a major issue in the endovascular management of ICAD, requiring retreatment by reangioplasty. The aim of the present study was to evaluate the technical feasibility, safety, and efficiency of the novel DEBs for neurovascular ISRs. AJNR Am J Neuroradiol 2011 32: 1942-1947originally published online on September 1, 2011, 10.3174/ajnr.A2644.

29 junio 2010

NEURORADIOLOGY. Long-term MRA follow-up after coiling of intracranial aneurysms: impact on mood and anxiety

Sandra P. Ferns & Pythia T. Nieuwkerk & Willem Jan J. van Rooij & Gabriël J. E. Rinkel & Charles B. L. M. Majoie

Introduction Magnetic resonance angiography (MRA) screening for recurrence of a coiled intracranial aneurysm and formation of new aneurysms long-term after coiling may induce anxiety and depression. In coiled patients, we evaluated effects on mood and level of anxiety from longterm follow-up MRA in comparison to general population norms. Neuroradiology (2011) 53:343–348. Copyright The Author(s) 2010. This article is published with open access at Springerlink.com

18 mayo 2010

NEURORADIOLOGY. Subtraction of unidirectionally encoded images for suppression of heavily isotropic objects (SUSHI) for selective visualization of peripheral nerves

Taro Takahara, Thomas C. Kwee, Jeroen Hendrikse, Marc Van Cauteren, Dow-Mu Koh, Tetsu Niwa, Willem P. Th. M. Mali and Peter R. Luijten

Introduction The aim of this study was to introduce and assess a new magnetic resonance (MR) technique for selective peripheral nerve imaging, called “subtraction of unidirectionally encoded images for suppression of heavily isotropic objects” (SUSHI). Neuroradiology Volume 53, Number 2 (2011), 109-116, DOI: 10.1007/s00234-010-0713-6. Copyright © The Author(s) 2010. This article is published with open access at pringerlink.com

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