This study was designed to compare the clinical and angiographic outcomes of patients with symptomatic atherosclerotic middle cerebral artery stenosis treated with balloon-mounted stents (BMS) and self-expandable Wingspan system (SES). We reviewed the 69 consecutive stent placement procedures for symptomatic atherosclerotic stenosis (≥70) in M1 segment of middle cerebral artery in 67 patients in 3 years. According to the stent types, the patients were classed as BMS and SES groups. The demographic characteristics, conventional risk factors of ischemic stroke, degree of stenosis, periprocedural complications, stent types, and clinical and angiographic outcomes were analyzed. CardioVascular and Interventional Radiology Volume 34, Number 1 (2011), 54-60, DOI: 10.1007/s00270-010-9885-z. Copiryght © Springer Science+Business Media, LLC and the Cardiovascular and Interventional Radiological Society of Europe (CIRSE) 2010
Background and Purpose—The objective of this study was to characterize demographics, treatments, and outcomes in the management of unruptured cerebral aneurysms in the United States using a national healthcare database. Stroke. 2011; 42: 1730-1735 Published online before print April 14, 2011. Copyright © 2011 American Heart Association, Inc. All rights reserved. Print ISSN: 0039-2499. Online ISSN: 1524-4628.
BACKGROUND AND PURPOSE: Serial in vivo imaging of atherosclerosis is important for understanding plaque progression and is potentially useful in predicting cardiovascular events and monitoring treatment efficacy. This prospective study aims to quantify temporal changes in carotid atherosclerotic plaque volume and plaque composition using MDCTA. Published online before print February 16, 2012, doi: 10.3174/ajnr.A2970. Copyright © 2012 American Society of Neuroradiology
BACKGROUND AND PURPOSE: The Y-stent technique, including crossing-Y and kissing-Y, is a promising therapeutic option for some complex bifurcation aneurysms. Here, its efficacy and safety are evaluated on the basis of 11 bifurcation aneurysms. Published online before print April 19, 2012, doi: 10.3174/ajnr.A2961. Copyright © 2012 American Society of Neuroradiology
Purpose: To report an updated, systematic review of medical literature from January 2003 to July 2008, on endovascular treatment (EVT) of intracranial unruptured aneurysms (UAs) (a) to Materials and Methods: assess the morbidity and case fatality rate of EVT of UAs, (b) to understand how bias can affect results, and (c) to estimate the effi cacy of EVT by using reported digital subtraction angiographic (DSA) results and clinical follow-up events. Radiology: Volume 256: Number 3—September 2010. Copiryght © RSNA, 2010
SUMMARY: Intracranial DAVFs are pathologic dural-based shunts and account for 10%–15% of all intracranial arteriovenous malformations. These malformations derive their arterial supply primarily from meningeal vessels, and the venous drainage is either via dural venous sinuses or through the cortical veins. DAVFs have a reported association with dural sinus thrombosis, venous hypertension, previous craniotomy, and trauma, though many lesions are idiopathic. The diagnosis is dependent on a high level of clinical suspicion and high-resolution imaging. Cross-sectional imaging techniques by using CT and MR imaging aid in the diagnosis, but conventional angiography remains the most accurate method for complete characterization and classification of DAVFs. The pattern of venous drainage observed on dynamic vascular imaging determines the type of DAVF and correlates with the severity of symptoms and the risk of hemorrhage. Published online before print January 12, 2012, doi: 10.3174/ajnr.A2798. Copyright © 2012 American Society of Neuroradiology
Background and Purpose—To evaluate the hemorrhage rates of cerebral arteriovenous malformations (AVM) and the risk factors of hemorrhage before and after Gamma Knife radiosurgery (GKS). Stroke. 2011; 42: 1691-1696 Published online before print April 21, 2011. Copyright © 2011 American Heart Association, Inc. All rights reserved. Print ISSN: 0039-2499. Online ISSN: 1524-4628
SUMMARY: Angiographic recurrence following endovascular therapy is an indirect measure of the potential for hemorrhage. Because patients and physicians consider recurrence to be a suboptimal outcome with some chance of future hemorrhage, much effort has been expended to reduce the incidence of recurrence. The literature regarding aneurysm recurrence following endovascular therapy, spanning 2 decades, is extensive. We will review and summarize the effort to reduce recurrence following endovascular treatment of cerebral aneurysms. Published online before print March 15, 2012, doi: 10.3174/ajnr.A3032. Copyright © 2012 American Society of Neuroradiology
SUMMARY: Cerebral aneurysms are treated to prevent hemorrhage or rehemorrhage. Angiographic recurrences following endovascular therapy have been a problem since the advent of this treatment technique, even though posttreatment hemorrhage remains rare. Notwithstanding its unclear clinical significance, angiographic recurrence remains not only a prime focus in the literature but also frequently leads to potentially risky retreatments. The literature regarding aneurysm recurrence following endovascular therapy, spanning 2 decades, is immense and immensely confusing. We review the topic of recurrence following endovascular treatment of cerebral aneurysms in an effort to distill it down to fundamental material relevant to clinical practice. Published online before print March 15, 2012, doi: 10.3174/ajnr.A2958. Copyright © 2012 American Society of Neuroradiology
Intracerebral hemorrhage (ICH) secondary to intravenous and intraarterial revascularization strategies for emergent treatment of acute ischemic stroke is associated with high mortality. ICH from systemic thrombolysis typically occurs within the first 24–36 hours of treatment initiation and is characterized by rapid hematoma development and growth. Pathophysiological mechanisms of revascularization therapy-induced ICH are complex and involve a combination of several distinct processes, including the direct effect of thrombolytic agents, disruption of the blood-brain barrier secondary to ischemia, and direct vessel damage from wire and microcatheter manipulations during endovascular procedures. Several definitions of ICH secondary to thrombolysis currently exist, depending on clinical or radiological characteristics used. Multiple studies have investigated clinical and laboratory risk factors associated with higher rates of ICH in this setting. Neurosurgical Focus. Apr 2012 / Vol. 32 / No. 4 / Page E2. DOI: 10.3171/2012.1.FOCUS11352.
Purpose: To perform a detailed analysis of blinding effi cacy in the Investigational Vertebroplasty Effi cacy and Safety Trial (INVEST) to determine any factors associated with patient unblinding. Radiology: Volume 257: Number 1—October 2010. Copiryght © RSNA, 2010
Purpose: To analyze the clinical and anatomic factors that affect the occurrence and outcome of complications (thromboembolic events and intraoperative rupture in the endovascular treatment of ruptured intracranial aneurysms in a large multicenter series, the CLARITY study (Clinical and Anatomic Results in the Treatment of Ruptured Intracranial Aneurysms). Radiology: Volume 256: Number 3—September 2010. Copiryght © RSNA, 2010
BACKGROUND AND PURPOSE: A number of thrombectomy devices are currently undergoing clinical evaluation; meanwhile, various novel devices are under investigation. The aims of this study were to quantify flow restoration and the particle size distribution of the effluent pursuant to MET in an in vitro occlusion model. Published online before print May 3, 2012, doi: 10.3174/ajnr.A3103. Copyright © 2012 American Society of Neuroradiology
Object: Given the feasibility of curative surgical and endovascular therapy for cerebral dural arteriovenous fistulas (DAVFs), there is a relative paucity of radiosurgical series for these lesions as compared with their arteriovenous malformation counterparts. Neurosurgical Focus. May 2012 / Vol. 32 / No. 5 / Page E18. DOI: 10.3171/2012.1.FOCUS11354.
Background and Purpose—Worldwide, different scales are used to assess the clinical condition on admission after aneurysmal subarachnoid hemorrhage. In addition to the prognostic value, the inter-rater variability should be taken into account when deciding which scale preferably should be used. We assessed the interobserver agreement of the commonly used World Federation of Neurological Surgeons, the Hunt and Hess, and the Prognosis on Admission of Aneurysmal Subarachnoid Hemorrhage scales. Stroke. 2011; 42: 1546-1549 Published online before print April 28, 2011. Copyright © 2011 American Heart Association, Inc. All rights reserved. Print ISSN: 0039-2499. Online ISSN: 1524-4628.
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