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ESTUDIOS


01 agosto 2012

STROKE. Intravenous Thrombolysis and Endovascular Therapy for Acute Ischemic Stroke With Internal Carotid Artery Occlusion A Systematic Review of Clinical Outcomes

Maxim Mokin, MD, PhD; Tareq Kass-Hout, MD; Omar Kass-Hout, MD, MPH; Travis M. Dumont, MD; Peter Kan, MD, MPH; Kenneth V. Snyder, MD, PhD; L. Nelson Hopkins, MD; Adnan H. Siddiqui, MD, PhD; Elad I. Levy, MD

Background and Purpose—Strokes secondary to acute internal carotid artery (ICA) occlusion are associated with extremely poor prognosis. The best treatment approach to acute stroke in this setting is unknown. We sought to determine clinical outcomes in patients with acute ischemic stroke attributable to ICA occlusion treated with intravenous (IV) systemic thrombolysis or intra-arterial endovascular therapy.

01 septiembre 2012

NEUROSURGERY. Factors and Outcomes Associated With Early and Delayed Aneurysm Treatment in Subarachnoid Hemorrhage Patients in the United States

Siddiq, Farhan MD; Chaudhry, Saqib A. MD; Tummala, Ramachandra P. MD; Suri, M. Fareed K. MD; Qureshi, Adnan I. MD

BACKGROUND: Recent studies from selected centers have shown that early surgical treatment of aneurysms in subarachnoid hemorrhage (SAH) patients can improve outcomes. These results have not been validated in clinical practice at large.

01 julio 2012

STOKE. Comparison of Flow Diversion and Coiling in Large Unruptured Intracranial Saccular Aneurysms

Nohra Chalouhi, MD; Stavropoula Tjoumakaris, MD; Robert M. Starke, MD; L. Fernando Gonzalez, MD; Ciro Randazzo, MD; David Hasan, MD; Jeffrey F. McMahon, BS; Saurabh Singhal, MD; Lea A. Moukarzel, BA; Aaron S. Dumont, MD; Robert Rosenwasser, MD; Pascal Jabbour, MD

Background and Purpose—Flow diversion has emerged as an important tool for the management of intracranial aneurysms. The purpose of this study was to compare flow diversion and traditional embolization strategies in terms of safety, efficacy, and clinical outcomes in patients with unruptured, large saccular aneurysms (≥10 mm).

01 agosto 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Chronic Hemodynamic Compromise and Cerebral Ischemic Events in Asymptomatic or Remote Symptomatic Large-Artery Intracranial Occlusive Disease

H. Yamauchia, T. Higashia, S. Kagawaa, Y. Kishibea and M. Takahashia

BACKGROUND AND PURPOSE: In asymptomatic or remote symptomatic LAICOD, the risk of ischemic events is low in general, but there may be a subgroup of higher risk patients who require aggressive medical management. The purpose of this study was to determine whether chronic hemodynamic compromise is a predictor of ischemic events in asymptomatic or remote symptomatic LAICOD.

01 agosto 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Intra-Arterial Infusion of a Glycoprotein IIb/IIIa Antagonist for the Treatment of Thromboembolism During Coil Embolization of Intracranial Aneurysm: A Comparison of Abciximab and Tirofiban

H.W. Jeonga and S.-C. Jinb

BACKGROUND AND PURPOSE: Abciximab and tirofiban are commonly used for the treatment of thromboembolisms that form during coiling of intracranial aneurysms; however, it is not known which of these inhibitors is safer and more effective. We report the safety and the recanalization rates for intra-arterial abciximab and intra-arterial tirofiban infusion for the treatment of thromboembolisms that form during coiling.

01 julio 2012

STROKE. Carotid Endarterectomy in Asymptomatic Patients With Limited Life Expectancy

Jessica B. Wallaert, MD; Randall R. De Martino, MD, MS; Samuel R.G. Finlayson, MD, MPH; Daniel B. Walsh, MD; Matthew A. Corriere, MD, MS; David H. Stone, MD; Jack L. Cronenwett, MD; Philip P. Goodney, MD, MS

Background and Purpose Data from randomized trials assert that asymptomatic patients undergoing carotid endarterectomy (CEA) must live 3 to 5 years to realize the benefit of surgery. We examined how commonly CEA is performed among asymptomatic patients with limited life expectancy.

01 septiembre 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Morphologic Characteristics of Atherosclerotic Middle Cerebral Arteries on 3T High-Resolution MRI

X.J. Zhua, B. Dub, X. Louc, F.K. Huid, L. Mac, B.W. Zhenga, M. Jinb, C.X. Wanga and W.-J. Jiangb

BACKGROUND AND PURPOSE: There are limited studies on the morphologic characteristics of MCA atherosclerotic stenosis. Our aim was to quantitatively assess the remodeling pattern and plaque distribution of atherosclerotic MCAs with 3T high-resolution MR imaging.

01 agosto 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. Superior Hypophyseal Artery Aneurysms Have the Lowest Recurrence Rate with Endovascular Therapy

N. Chalouhia, S. Tjoumakarisa, A.S. Dumonta, L.F. Gonzaleza, C. Randazzoa, D. Gordona, R. Chitalea, R. Rosenwassera and P. Jabboura

BACKGROUND AND PURPOSE: Given the challenges posed by surgical clipping, endovascular techniques have been increasingly used to treat SHA aneurysms. The purpose of this study was to assess the safety and efficacy of endovascular techniques in the treatment of SHA aneurysms.

01 agosto 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Safety and Efficacy of Endovascular Sonolysis Using the EkoSonic Endovascular System in Patients with Acute Stroke

M. Kuliha, M. Roubec, T. Jonszta, J. Krajča, D. Czerny, A. Krajina, K. Langová, R. Herzig, V. Procházka and D. Školoudík

BACKGROUND AND PURPOSE: Sonolysis is a new therapeutic procedure for arterial recanalization. The aim of this study was to confirm the safety and efficacy of endovascular sonolysis by using the EkoSonic Endovascular System in subjects with acute ischemic stroke.

01 agosto 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. 3D Computational Fluid Dynamics of a Treated Vertebrobasilar Giant Aneurysm: A Multistage Analysis

F. Graziano, V.M. Russo, W. Wang, D. Khismatullin and A.J. Ulm III

BACKGROUND AND PURPOSE: The treatment of giant aneurysms of the vertebrobasilar junction remains a challenging task in neurosurgical practice, and the reference standard therapy is still under debate. Through a detailed postmortem study, we analyzed the hemodynamic factors underlying the formation and recanalization of an aneurysm located at this particular site and its anatomic configuration.

01 julio 2013

NEUROSURGERY. Solitaire Flow Restoration Thrombectomy for Acute Ischemic Stroke: Retrospective Multicenter Analysis of Early Postmarket Experience After FDA Approval

Mokin, Maxim MD, PhD; Dumont, Travis M. MD; Veznedaroglu, Erol MD; Binning, Mandy J. MD; Liebman, Kenneth M. MD; Fessler, Richard D. MD; To, Chiu Yuen DO; Turner, Raymond D. MD; Turk, Aquilla S. DO; Chaudry, M. Imran MD; Arthur, Adam S. MD, MPH; Fox, Benjamin D. MD; Hanel, Ricardo A. MD, PhD; Tawk, Rabih G. MD; Kan, Peter MD, MPH; Gaughen, John R. MD; Lanzino, Giuseppe MD; Lopes, Demetrius K. MD; Chen, Michael MD; Moftakhar, Roham MD; Billingsley, Joshua T. MD; Ringer, Andrew J. MD; Snyder, Kenneth V. MD, PhD; Hopkins, L. Nelson MD; Siddiqui, Adnan H. MD, PhD; Levy, Elad I. MD

BACKGROUND: The promising results of the Solitaire Flow Restoration (FR) With the Intention for Thrombectomy (SWIFT) trial recently led to Food and Drug Administration (FDA) approval of the Solitaire FR stent retriever device for recanalization of cerebral vessels in patients with acute ischemic stroke.

01 agosto 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Comparison of Blood Flow Velocity Quantification by 4D Flow MR Imaging with Ultrasound at the Carotid Bifurcation

A. Harloff, T. Zech, F. Wegent, C. Strecker, C. Weiller and M. Markl

BACKGROUND AND PURPOSE: 4D flow MR imaging is an emerging technique that allows visualization and quantification of 3D blood flow in vivo. However, representative studies evaluating its accuracy are lacking. Therefore, we compared blood flow quantification by using 4D flow MR imaging with US within the carotid bifurcation.

01 agosto 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Frequency-Domain Optical Coherence Tomography Assessment of Human Carotid Atherosclerosis Using Saline Flush for Blood Clearance without Balloon Occlusion

C.A. Given II, G.F. Attizzani, M.R. Jones, C.N. Ramsey III, W.H. Brooks, M.A. Costa and H.G. Bezerra

FD-OCT is a new imaging technique that allows unprecedented in vivo microlevel assessment of human carotid plaque morphologic patterns and stent-vessel interactions. Prior reports describing the use of this technique have used balloon occlusion of the target vessel or iodinated contrast media to facilitate imaging. We report, for the first time, in vivo FD-OCT imaging of human carotid arteries without the use of iodinated contrast material or balloon occlusion techniques.

01 agosto 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. Intrasaccular Flow-Disruption Treatment of Intracranial Aneurysms: Preliminary Results of a Multicenter Clinical Study

L. Pierot, T. Liebig, V. Sychra, K. Kadziolka, F. Dorn, C. Strasilla, C. Kabbasch and J. Klisch

BACKGROUND AND PURPOSE: The endovascular treatment of intracranial aneurysms with unfavorable anatomy (large aneurysms, wide-neck) is frequently challenging and is also associated with a high incidence of significant recurrences. The WEB, an intrasaccular flow disrupter, was designed for use in this type of aneurysm. We report our early experience with this device in this multicenter study.

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