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ABSTRACT


01 octubre 2012

ACTA NEUROCHIRURGICA. Flow diversion treatment: intra-aneurismal blood flow velocity and WSS reduction are parameters to predict aneurysm thrombosis

Zsolt Kulcsár, Luca Augsburger, Philippe Reymond, Vitor M. Pereira, Sven Hirsch, Ajit S. Mallik, John Millar, Stephan G. Wetzel, Isabel Wanke, Daniel A. Rüfenacht

Background: To evaluate the haemodynamic changes induced by flow diversion treatment in cerebral aneurysms, resulting in thrombosis or persisting aneurysm patency over time.

01 enero 2012

NEURORADIOLOGY. Initial experiences with the Amplatzer Vascular Plug 4 for permanent occlusion of the internal carotid artery in the skull base in patients with head and neck tumors

Stephan Macht, Christian Mathys, Jörg Schipper, Bernd Turowski

Introduction: As the first report in the literature, we present our initial experiences with the latest generation s Amplatzer Vascular Plug 4 (AVP4) as a device for permanent occlusion of the internal carotid artery in its course in the skull base.

02 agosto 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. Prospective Comparison of Angio-Seal versus Manual Compression for Hemostasis after Neurointerventional Procedures under Systemic Heparinization

H.-F. Wong, C.-W. Lee, Y.-L. Chen, Y.-M. Wu, H.-H. Weng, Y.-H. Wang and H.-M. Liu

BACKGROUND AND PURPOSE: The use of arterial closure device in patients with prolonged high ACT values has not been extensively studied. The aim of this study was to compare the safety and efficacy of an arterial closure device, Angio-Seal, with manual compression in patients on anticoagulation following neurointerventional procedures.

19 julio 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. Mechanical Thrombectomy in Acute Stroke: Prospective Pilot Trial of the Solitaire FR Device while Under Conscious Sedation

S. Soize, K. Kadziolka, L. Estrade, I. Serre, S. Bakchine and L. Pierot

BACKGROUND AND PURPOSE: The best approach between general anesthesia and conscious sedation to perform mechanical thrombectomy remains unknown. The goal of our study was to evaluate the feasibility, safety, and efficacy of mechanical thrombectomy under conscious sedation in patients with acute ischemic stroke, using the Solitaire FR device, in a prospective, single-center, single-arm study.

12 julio 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. Comparison of Stent-Retriever Devices versus the Merci Retriever for Endovascular Treatment of Acute Stroke

E. Broussalis, E. Trinka, W. Hitzl, A. Wallner, V. Chrousa and M. Killer-Oberpfalzer

BACKGROUND AND PURPOSE: Revascularization of large cerebral artery occlusion is the therapeutic goal in stroke therapy. Currently, many recanalization devices are in clinical use. This study compares the outcome parameters, efficacy, and safety of the new generation of stent-retriever devices with the well-established Merci retriever.

02 agosto 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. Canadian Experience with the Pipeline Embolization Device for Repair of Unruptured Intracranial Aneurysms

BACKGROUND AND PURPOSE: Flow-diverting stents, such as the PED, have emerged as a novel means of treating complex intracranial aneurysms. This retrospective analysis of the initial Canadian experience provides insight into technical challenges, clinical and radiographic outcomes, and complication rates after the use of flow-diverting stents for unruptured aneurysms.

24 mayo 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. Clinical Stroke Penumbra: Use of National Institutes of Health Stroke Scale as a Surrogate for CT Perfusion in Patient Triage for Intra-Arterial Middle Cerebral Artery Stroke Therapy

J.L. Boxerman, M.V. Jayaraman, W.A. Mehan, J.M. Rogg and R.A. Haas

BACKGROUND AND PURPOSE: CTP may help triage acute stroke patients for IAT, but requires additional contrast agent, radiation, and imaging time. Our aim was to determine whether clinical examination (NIHSS) with NCCT and CTA can substitute for CTP without significantly affecting IAT triage of patients with acute MCA stroke.

01 febrero 2013

NEURORADIOLOGY. Effect of carotid artery stenting on cerebral blood flow: evaluation of hemodynamic changes using arterial spin labeling

Tae Jin Yun, Chul-Ho Sohn, Moon Hee Han, Byung-Woo Yoon, Hyun-Seung Kang, Jeong Eun Kim, Jin Chul Paeng, Seung Hong Choi, Ji-hoon Kim, Kee-Hyun Chang

Introduction: The purpose of this work was to quantitatively evaluate the hemodynamic changes after carotid artery stenting (CAS) by measuring cerebral blood flow (CBF) using arterial spin labeling (ASL).

21 junio 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. Location of the Clot and Outcome of Perfusion Defects in Acute Anterior Circulation Stroke Treated with Intravenous Thrombolysis

N. Sillanpää, J.T. Saarinen, H. Rusanen, I. Elovaara, P. Dastidar and S. Soimakallio

BACKGROUND AND PURPOSE: The location of the clot is a major determinant of ischemic stroke outcome. We studied the impact of the location (ICA, proximal M1 segment of the MCA, distal M1 segment, and M2 segment and more distally) of the clot on the CT perfusion parametric maps, the mismatch ratio, the amount of salvaged brain tissue, and the imaging and clinical outcomes in a retrospective acute (<3 hours) stroke cohort treated with intravenous thrombolysis.

01 febrero 2013

NEURORADIOLOGY. Relationship between vertebral artery hypoplasia and posterior circulation stroke in Chinese patients

Xiao-Yue Hu, Zheng-Xi Li, Hui-Qin Liu, Min Zhang, Meng-Li Wei, Shan Fang, Wei Chen, Hui Pan, Jin-Xiu Huang, Yi-Min Zhu, Jian-Ren Liu

Introduction: Vertebral artery hypoplasia (VAH), which has been found in about 10 % of normal individuals, does not produce symptoms but may be associated with an increased risk of cerebral posterior circulation ischemic (PCI) stroke. The aims of this study were to determine the prevalence of VAH in Chinese patients with cerebral infarction and investigate whether VAH is an independent risk factor for PCI stroke.

01 febrero 2013

JOURNAL OF VASCULAR SURGERY. Risk index for predicting perioperative stroke, myocardial infarction, or death risk in asymptomatic patients undergoing carotid endarterectomy

Prateek K. Gupta, MD, Bala Ramanan, MBBS, Jason N. MacTaggart, MD, Abhishek Sundaram, MBBS, MPH, Xiang Fang, MD, Himani Gupta, MD, Jason M. Johanning, MD, Iraklis I. Pipinos, MD

Objective: The latest guidelines recommend performance of carotid endarterectomy (CEA) on asymptomatic patients with high-grade carotid stenosis, only if the combined perioperative stroke, myocardial infarction (MI), or death risk is ≤3%. Our objective was to develop and validate a risk index to estimate the combined risk of perioperative stroke, MI, or death in asymptomatic patients undergoing elective CEA.

26 julio 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. A Meta-Analysis of Observational Intra-Arterial Stroke Therapy Studies Using the Merci Device, Penumbra System, and Retrievable Stents

M.A. Almekhlafi, B.K. Menon, E.A. Freiheit, A.M. Demchuk and M. Goyal

BACKGROUND AND PURPOSE: The time from arterial puncture to successful recanalization is an important milestone toward timely recanalization. With the significant improvement in recanalization rates by using thrombectomy devices, procedural time to recanalization is becoming a determinant factor in choosing among available devices. We aimed to assess the impact of time to recanalization on the outcome of intra-arterial stroke therapies.

10 enero 2013

STROKE. Real-time Validation of Transcranial Doppler Criteria in Assessing Recanalization During Intra-arterial Procedures for Acute Ischemic Stroke An International, Multicenter Study

Georgios Tsivgoulis, MD; Marc Ribo, MD; Marta Rubiera, MD; Spyros N. Vasdekis, MD; Kristian Barlinn, MD; Dimitrios Athanasiadis, MD; Reza Bavarsad Shahripour, MD; Sotirios Giannopoulos, MD; Elefterios Stamboulis, MD; Mark R. Harrigan, MD; Carlos A. Molina, MD; Andrei V. Alexandrov, MD

Background and Purpose—We sought to evaluate the diagnostic accuracy of ultrasound criteria for recanalization during real-time transcranial Doppler monitoring of intra-arterial reperfusion procedures in acute ischemic stroke patients in an international, multicenter study.

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