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ESTUDIOS


09 agosto 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. Contrast-Enhanced 3T High-Resolution MR Imaging in Symptomatic Atherosclerotic Basilar Artery Stenosis

X. Lou, N. Ma, L. Ma and W.-J. Jiang

Background and Purpose: Contrast-enhanced 3T high-resolution MR imaging can be used to determine the wall enhancement pattern of the basilar artery in symptomatic atherosclerotic stenosis. We used this method to explore the relationship between wall enhancement and both recent infarction in the territory of the stenotic BA and subsequent ischemic events associated with the stenotic BA.

23 agosto 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. Blood-Brain Barrier Disruption after Cardiac Surgery

J.G. Merino, L.L. Latour, A. Tso, K.Y. Lee, D.W. Kang, L.A. Davis, R.M. Lazar, K.A. Horvath, P.J. Corso and S. Warach

Background and Purpose: CNS complications are often seen after heart surgery, and postsurgical disruption of the BBB may play an etiologic role. The objective of this study was to determine the prevalence of MR imaging-detected BBB disruption (HARM) and DWI lesions after cardiac surgery.

16 agosto 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. Endovascular Reconstruction for Treatment of Vertebrobasilar Dolichoectasia: Long-Term Outcomes

X. Wu, Y. Xu, B. Hong, W.-Y. Zhao, Q.-H. Huang and J.-M. Liu

Background and Purpose: VBD can trigger various clinical symptoms, especially ischemic stroke in the posterior circulation, but there is no effective treatment for their prevention. We aimed to validate the feasibility of coil-assisted stent reconstruction in the vascular lumen for the treatment of VBD and to evaluate its long-term effectiveness in preventing ischemic events.

22 noviembre 2012

AMERICAN JOURNAL OF NEURORADIOLOGY. A Randomized Trial Comparing 2 Techniques of Balloon Kyphoplasty and Curette Use for Obtaining Vertebral Body Height Restoration and Angular-Deformity Correction in Vertebral Compression Fractures due to Osteoporosis

L. Bastian, F. Schils, J.B. Tillman and G. Fueredi on behalf of the SCORE Investigators

Background and Purpose: Vertebral compression fractures often result in pain and vertebral deformity. We compared 2 different balloon kyphoplasty techniques both using intraoperative curettage.

23 enero 2014

AMERICAN JOURNAL OF NEURORADIOLOGY. WEB-DL Endovascular Treatment of Wide-Neck Bifurcation Aneurysms: Short- and Midterm Results in a European Study

B. Lubicz, J. Klisch, J.-Y. Gauvrit, I. Szikora, M. Leonardi, T. Liebig, N.P. Nuzzi, E. Boccardi, F.D. Paola, M. Holtmannspötter, W. Weber, E. Calgliari, V. Sychra, B. Mine and L. Pierot

Background and Purpose: Flow disruption with the WEB-DL device has been used safely for the treatment of wide-neck bifurcation aneurysms, but the stability of aneurysm occlusion after this treatment is unknown. This retrospective multicenter European study analyzed short- and midterm data in patients treated with WEB-DL.

22 agosto 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Improved Quality and Diagnostic Confidence Achieved by Use of Dose-Reduced Gadolinium Blood-Pool Agents for Time-Resolved Intracranial MR Angiography

S. Dehkharghani, J. Kang and A.M. Saindane

Background and Purpose: Time-resolved MRA with the use of bolus injection of paramagnetic agents has proved valuable in neurovascular imaging. Standard contrast agents have limited blood-pool residence times, motivating the development of highly protein-bound blood-pool agents with greater relaxivity and longer intravascular residence, affording improved image quality at lesser doses. This study represents the first comparison of blood-pool agents to standard agents in time-resolved cerebral MRA.

07 noviembre 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Appropriate Use of CT Perfusion following Aneurysmal Subarachnoid Hemorrhage: A Bayesian Analysis Approach

R.P. Killeen, A. Gupta, H. Delaney, C.E. Johnson, A.J. Tsiouris, J. Comunale, M.E. Fink, H.S. Mangat, A.Z. Segal, A.I. Mushlin and P.C. Sanelli

Background and Purpose: In recent years CTP has been used as a complementary diagnostic tool in the evaluation of delayed cerebral ischemia and vasospasm. Our aim was to determine the test characteristics of CTP for detecting delayed cerebral ischemia and vasospasm in SAH, and then to apply Bayesian analysis to identify subgroups for its appropriate use.

25 marzo 2014

CIRCULATION. Epidemiology and Prevention. Warfarin Use and the Risk for Stroke and Bleeding in Patients With Atrial Fibrillation Undergoing Dialysis

Mitesh Shah, MBBS MSc; Meytal Avgil Tsadok, PhD; Cynthia A. Jackevicius, PharmD, MSc; Vidal Essebag, MD, PhD; Mark J. Eisenberg, MD, MPH; Elham Rahme, PhD; Karin H. Humphries, DSc; Jack V. Tu, MD, PhD; Hassan Behlouli, PhD; Helen Guo, MSc; Louise Pilote, MD, PhD

Background: Current observational studies on warfarin use and the risk for stroke and bleeding in patients with atrial fibrillation (AF) undergoing dialysis found conflicting results.

21 marzo 2014

EUROPEAN HEART JOURNAL. Device-detected atrial fibrillation and risk for stroke: an analysis of >10 000 patients from the SOS AF project (Stroke preventiOn Strategies based on Atrial Fibrillation information from implanted devices)

Giuseppe Boriani1,*, Taya V. Glotzer2, Massimo Santini3, Teena M. West4, Mirko De Melis4, Milan Sepsi5, Maurizio Gasparini6, Thorsten Lewalter7, John A. Camm8 and Daniel E. Singer9

Objective: The aim of this study was to assess the association between maximum daily atrial fibrillation (AF) burden and risk of ischaemic stroke.

28 julio 2011

STROKE. Asymptomatic Carotid Stenosis. Identifying Patients at High Enough Risk to Warrant Endarterectomy or Stenting

J. David Spence, MD, FRCPC; David Pelz, MD, FRCPC; Frank J. Veith, MD, FACS

In this issue of Stroke, Hirt1 reports that substantial progression of carotid stenosis predicted ipsilateral stroke or transient ischemic attack among patients randomized to medical therapy in the Asymptomatic Carotid Surgery Trial (ACST).2 This might be regarded as another justification to perform carotid endarterectomy (CEA) or stenting (CAS) in some patients with asymptomatic carotid stenosis (ACS), and Hirt’s article may help in the selection for invasive treatment of those ACS patients at highest risk of having a stroke.

13 febrero 2014

STROKE. Clinical Sciences. Serial Alberta Stroke Program Early CT Score From Baseline to 24 Hours in Solitaire Flow Restoration With the Intention for Thrombectomy Study. A Novel Surrogate End Point for Revascularization in Acute Stroke

David S. Liebeskind, MD; Reza Jahan, MD; Raul G. Nogueira, MD; Tudor G. Jovin, MD; Helmi L. Lutsep, MD; Jeffrey L. Saver, MD for the SWIFT Investigators

Background and Purpose: The Alberta Stroke Program Early CT Score (ASPECTS) on baseline imaging is an established predictor of acute ischemic stroke outcomes. We analyzed change on serial ASPECTS at baseline and 24-hour imaging in the Solitaire Flow Restoration with the Intention for Thrombectomy (SWIFT) study to determine prognostic value and to identify subgroups with extensive injury after intervention.

17 enero 2014

STROKE. Clinical Sciences. Predictors for Recurrent Primary Intracerebral Hemorrhage. A Retrospective Population-based Study

Juha Huhtakangas, MD, PhD; Pekka Löppönen, MD; Sami Tetri, MD, PhD; Seppo Juvela, MD, PhD; Pertti Saloheimo, MD, PhD; Michaela K. Bode, MD, PhD; Matti Hillbom, MD, PhD

Background and Purpose: Underlying comorbidities, previous strokes, and medication may increase the risk for primary intracerebral hemorrhage (PICH) and its recurrence. The aim of this study was to determine the independent predictors for recurrent PICH.

05 febrero 2013

STROKE. Clinical Sciences. Stroke Risk After Posterior Circulation Stroke/Transient Ischemic Attack and its Relationship to Site of Vertebrobasilar Stenosis. Pooled Data Analysis From Prospective Studies

Giosue Gulli, MD; Lars Marquardt, MD; Peter M. Rothwell, FMed Sci; Hugh S. Markus, FRCP

Background and Purpose: Recent prospective studies have shown vertebrobasilar (VB) stenosis predicts stroke risk in posterior circulation stroke and transient ischemic attack. It is unclear whether this association is independent of other risk factors, and whether intracranial or extracranial stenosis confers different risks.

07 febrero 2013

STROKE. Clinical Sciences. Subarachnoid Extension of Primary Intracerebral Hemorrhage is Associated With Poor Outcomes

Matthew B. Maas, MD; Alexander J. Nemeth, MD; Neil F. Rosenberg, MD; Adam R. Kosteva, MA; James C. Guth, MD; Eric M. Liotta, MD; Shyam Prabhakaran, MD, MS; Andrew M. Naidech, MD, MSPH

Background and Purpose: Extension of hemorrhage into the subarachnoid space is observed in primary intracerebral hemorrhage (ICH), yet the phenomenon has undergone limited study and is of unknown significance. The objective of this study is to evaluate the incidence, characteristics, and clinical consequences of subarachnoid hemorrhage extension (SAHE) in ICH on functional outcomes.

22 enero 2013

STROKE. Clinical Sciences. Induction of Cooling With a Passive Head and Neck Cooling Device. Effects on Brain Temperature After Stroke

Sven Poli, MD; Jan Purrucker, MD; Miriam Priglinger, MD; Jennifer Diedler, MD; Marek Sykora, MD, PhD; Erik Popp, MD; Thorsten Steiner, MD; Roland Veltkamp, MD; Julian Bösel, MD; André Rupp, PhD; Werner Hacke, MD, PhD; Christian Hametner, MD

Background and Purpose: Therapeutic hypothermia improves clinical outcome after cardiac arrest and appears beneficial in other cerebrovascular diseases. We conducted this study to investigate the relationship between surface head/neck cooling and brain temperature.

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