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ABSTRACT


13 septiembre 2016

STROKE. Remote Lower White Matter Integrity Increases the Risk of Long-Term Cognitive Impairment After Ischemic Stroke in Young Adults

Pauline Schaapsmeerders, Anil M. Tuladhar, Renate M. Arntz, Sieske Franssen, Noortje A.M. Maaijwee, Loes C.A. Rutten-Jacobs, Hennie C. Schoonderwaldt, Lucille D.A. Dorresteijn, Ewoud J. van Dijk, Roy P.C. Kessels, Frank-Erik de Leeuw

Background and Purpose: Poststroke cognitive impairment occurs frequently in young patients with ischemic stroke (18 through 50 years of age). Accumulating data suggest that stroke is associated with lower white matter integrity remote from the stroke impact area, which might explain why some patients have good long-term cognitive outcome and others do not. Given the life expectancy of decades in young patients, we therefore investigated remote white matter in relation to long-term cognitive function.

16 agosto 2016

STROKE. Increased Frontal Lobe Activation After Aneurysmal Subarachnoid Hemorrhage

Leodante da Costa, Benjamin T. Dunkley, Allison Bethune, Amanda Robertson, Anne Keller, Elizabeth W. Pang

Background and Purpose: Neurocognitive deficits are common among survivors of aneurysmal subarachnoid hemorrhage, even among those with good outcomes and no structural lesions. This study aims to probe the neurophysiological underpinnings of cognitive dysfunction among patients with ruptured intracranial aneurysms using magnetoencephalography (MEG).

01 noviembre 2016

THE LANCET. Neurology. Safety and efficacy of minimally invasive surgery plus alteplase in intracerebral haemorrhage evacuation (MISTIE): a randomised, controlled, open-label, phase 2 trial

Prof Daniel F Hanley, MD, Richard E Thompson, PhD, John Muschelli, PhD, Michael Rosenblum, PhD, Nichol McBee, MPH, Karen Lane, CMA, Amanda J Bistran-Hall, BS, Steven W Mayo, PD, Penelope Keyl, PhD, Dheeraj Gandhi, MD, Tim C Morgan, MPH, Natalie Ullman, MPH, W Andrew Mould, BA, J Ricardo Carhuapoma, MD, Carlos Kase, MD, Wendy Ziai, MD, Carol B Thompson, MS, Gayane Yenokyan, PhD, Emily Huang, PhD, William C Broaddus, MD, R Scott Graham, MD, E Francois Aldrich, MD, Robert Dodd, MD, Cristanne Wijman, MD*, Jean-Louis Caron, MD, Judy Huang, MD, Paul Camarata, MD, A David Mendelow, FRCS[SN], Barbara Gregson, PhD, Scott Janis, PhD, Paul Vespa, MD, Neil Martin, MD, Prof Issam Awad, MD†, Prof Mario Zuccarello, MD† for the MISTIE Investigators‡ †Contributed equally

Background: Craniotomy, according to the results from trials, does not improve functional outcome after intracerebral haemorrhage. Whether minimally invasive catheter evacuation followed by thrombolysis for clot removal is safe and can achieve a good functional outcome is not known. We investigated the safety and efficacy of alteplase, a recombinant tissue plasminogen activator, in combination with minimally invasive surgery (MIS) in patients with intracerebral haemorrhage.

01 noviembre 2016

THE LANCET. Neurology. Validation and comparison of imaging-based scores for prediction of early stroke risk after transient ischaemic attack: a pooled analysis of individual-patient data from cohort studies

Prof Peter J Kelly, MD, Gregory W Albers, MD, Anastasios Chatzikonstantinou, MD, Gian Marco De Marchis, MD, Julia Ferrari, MD, Paul George, MD, Mira Katan, MD, Michael Knoflach, MD, Prof Jong S Kim, MD, Linxin Li, DPhil, Eun-Jae Lee, MD, Prof Jean-Marc Olivot, MD, Prof Francisco Purroy, PhD, Nicolas Raposo, MD, Prof Peter M Rothwell, FMedSci, Prof Vijay K Sharma, MD, Bo Song, MD, Prof Georgios Tsivgoulis, MD, Prof Cathal Walsh, PhD, Prof Yuming Xu, MD, Aine Merwick, PhD

Background: Identification of patients at highest risk of early stroke after transient ischaemic attack has been improved with imaging based scores. We aimed to compare the validity and prognostic utility of imaging-based stroke risk scores in patients after transient ischaemic attack.

16 junio 2016

AMERICAN JOURNAL OF NEURORADIOLOGY. Diagnostic Performance of Routine Brain MRI Sequences for Dural Venous Sinus Thrombosis

D. Patel, M. Machnowska, S. Symons, R. Yeung, A.J. Fox, R.I. Aviv and P. Jabehdar Maralani

BACKGROUND AND PURPOSE: Signs suggestive of unexpected dural venous sinus thrombosis are detectable on routine MR imaging studies without MRV. We assessed performance characteristics and interrater reliability of routine MR imaging for the diagnosis of dural venous sinus thrombosis, focusing on the superior sagittal, transverse, and sigmoid sinuses.

14 julio 2016

AMERICAN JOURNAL OF NEURORADIOLOGY. Comparison of CTA- and DSA-Based Collateral Flow Assessment in Patients with Anterior Circulation Stroke

I.G.H. Jansen, O.A. Berkhemer, A.J. Yoo, J.A. Vos, G.J. Lycklama à Nijeholt, M.E.S. Sprengers, W.H. van Zwam, W.J. Schonewille, J. Boiten, M.A.A. van Walderveen, R.J. van Oostenbrugge, A. van der Lugt, H.A. Marquering and C.B.L.M. Majoie on behalf of the MR CLEAN investigators (www.mrclean-trial.org)

BACKGROUND AND PURPOSE: Collateral flow is associated with clinical outcome after acute ischemic stroke and may serve as a parameter for patient selection for intra-arterial therapy. In clinical trials, DSA and CTA are 2 imaging modalities commonly used to assess collateral flow. We aimed to determine the agreement between collateral flow assessment on CTA and DSA and their respective associations with clinical outcome.

26 mayo 2016

AMERICAN JOURNAL OF NEURORADIOLOGY. Clinical Significance of the Champagne Bottle Neck Sign in the Extracranial Carotid Arteries of Patients with Moyamoya Disease

C. Yasuda, S. Arakawa, T. Shimogawa, Y. Kanazawa, T. Sayama, S. Haga and T. Morioka

BACKGROUND AND PURPOSE: The champagne bottle neck sign represents a rapid reduction in the extracranial ICA diameters and is a characteristic feature of Moyamoya disease. However, the clinical significance of the champagne bottle neck sign is unclear. We investigated the relationship between the champagne bottle neck sign and the clinical and hemodynamic stages of Moyamoya disease.

01 diciembre 2016

SPRINGER. Endovascular treatment of acute internal carotid artery dissections: technical considerations, clinical and angiographic outcome

Wiebke Kurre, Kai Bansemir, Marta Aguilar Pérez, Rosa Martinez Moreno, Elisabeth Schmid, Hansjörg Bäzner, Hans Henkes

Introduction: In acute internal carotid artery dissection (a-ICAD) with concomitant intracranial large vessel occlusion or haemodynamic impairment, the effectiveness of medical treatment is limited and endovascular therapy (EVT) can be considered. Feasibility, safety and outcome of EVT in a-ICAD are not well described yet.

01 noviembre 2016

NEUROSURGERY. Worse Outcomes After Repeat vs Initial Stereotactic Radiosurgery for Cerebral Arteriovenous Malformations: A Retrospective Matched-Cohort Study

Ding, Dale MD; Xu, Zhiyuan MD; Shih, Han-Hsun MD; Starke, Robert M. MD, MSc; Yen, Chun-Po MD; Cohen-Inbar, Or MD, PhD; Sheehan, Jason P. MD, PhD

BACKGROUND: Incompletely obliterated cerebral arteriovenous malformations (AVMs) after initial treatment with stereotactic radiosurgery (SRS) can be treated with a repeat session of SRS. However, the relative efficacy of repeat vs initial SRS is not well specified.

01 octubre 2016

NEUROSURGERY. Transfemoral Stenting of Stenoses at the Common Carotid Artery Origin Using an Anchoring Technique With a Balloon Protection Device

Tsuji, Kiyoshi MD, PhD; Fukawa, Norihito MD; Nakagawa, Nobuhiro MD, PhD; Watanabe, Akira MD, PhD; Murakami, Saori MD; Nagatsuka, Kazuhiro MD; Nakano, Naoki MD, PhD; Kataoka, Kazuo MD, PhD; Kato, Amami MD, PhD

BACKGROUND: Transfemoral stenting of stenoses at the common carotid artery (CCA) origin is technically difficult because of poor stability of the guiding catheter.

04 noviembre 2016

CIRCULATION: CARDIOVASCULAR INTERVENTIONS. Significant Association of Annual Hospital Volume With the Risk of Inhospital Stroke or Death Following Carotid Endarterectomy but Likely Not After Carotid Stenting. Secondary Data Analysis of the Statutory German Carotid Quality Assurance Database

Andreas Kuehnl, Pavlos Tsantilas, Christoph Knappich, Sofie Schmid, Thomas König, Thorben Breitkreuz, Alexander Zimmermann, Ulrich Mansmann, Hans-Henning Eckstein

Background: Associations between hospital volume and the risk of stroke or death following carotid endarterectomy (CEA) and carotid artery stenting (CAS) on a national level in Germany were analyzed.

14 abril 2016

AMERICAN JOURNAL OF NEURORADIOLOGY. Centripetal Propagation of Vasoconstriction at the Time of Headache Resolution in Patients with Reversible Cerebral Vasoconstriction Syndrome

M. Shimoda, S. Oda, A. Hirayama, M. Imai, F. Komatsu, K. Hoshikawa, H. Shigematsu, J. Nishiyama and T. Osada

BACKGROUND AND PURPOSE: Reversible cerebral vasoconstriction syndrome is characterized by thunderclap headache and diffuse segmental vasoconstriction that resolves spontaneously within 3 months. Previous reports have proposed that vasoconstriction first involves small distal arteries and then progresses toward major vessels at the time of thunderclap headache remission. The purpose of this study was to confirm centripetal propagation of vasoconstriction on MRA at the time of thunderclap headache remission compared with MRA at the time of reversible cerebral vasoconstriction syndrome onset.

21 abril 2016

AMERICAN JOURNAL OF NEURORADIOLOGY. Association of Automatically Quantified Total Blood Volume after Aneurysmal Subarachnoid Hemorrhage with Delayed Cerebral Ischemia

I.A. Zijlstra, C.S. Gathier, A.M. Boers, H.A. Marquering, A.J. Slooter, B.K. Velthuis, B.A. Coert, D. Verbaan, R. van den Berg, G.J. Rinkel and C.B. Majoie

BACKGROUND AND PURPOSE: The total amount of extravasated blood after aneurysmal subarachnoid hemorrhage, assessed with semiquantitative methods such as the modified Fisher and Hijdra scales, is known to be a predictor of delayed cerebral ischemia. However, prediction rates of delayed cerebral ischemia are moderate, which may be caused by the rough and observer-dependent blood volume estimation used in the prediction models. We therefore assessed the association between automatically quantified total blood volume on NCCT and delayed cerebral ischemia.

02 junio 2016

AMERICAN JOURNAL OF NEURORADIOLOGY. Endovascular Coiling of Wide-Neck and Wide-Neck Bifurcation Aneurysms: A Systematic Review and Meta-Analysis

B. Zhao, R. Yin, G. Lanzino, D.F. Kallmes, H.J. Cloft and W. Brinjikji

BACKGROUND AND PURPOSE: We present the results of a systematic review and meta-analysis examining outcomes of endovascular coiling of wide-neck and wide-neck bifurcation aneurysms with and without stent assistance. The aim of our study was to assess angiographic and clinical outcomes.

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