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Source: Stroke
Procedure: PET Scan
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Total 171 results found since Jan 2013.
Quantifying Infarct Growth and Secondary Injury Volumes Clinical Sciences
Conclusions—The contributions of IG and AD to lesion expansion can be measured separately over time through the use of image registration. This approach can be used to combine imaging outcome data from computed tomography and MRI.
Source: Stroke - June 25, 2018 Category: Neurology Authors: George W.J. Harston, Davide Carone, Fintan Sheerin, Mark Jenkinson, James Kennedy Tags: Imaging, Ischemic Stroke Original Contributions Source Type: research
Texture Analysis of T1-Weighted and Fluid-Attenuated Inversion Recovery Images Detects Abnormalities That Correlate With Cognitive Decline in Small Vessel Disease Clinical Sciences
Conclusions—TP, which can be obtained from routine clinical images, are abnormal in SVD, and the degree of abnormality correlates with executive dysfunction and global cognition at baseline and decline during 5 years. TP may be useful to assess disease severity in clinically collected data. This needs testing in data clinically acquired across multiple sites.
Source: Stroke - June 25, 2018 Category: Neurology Authors: Daniel J. Tozer, Eva Zeestraten, Andrew J. Lawrence, Thomas R. Barrick, Hugh S. Markus Tags: Imaging, Magnetic Resonance Imaging (MRI), Vascular Disease Original Contributions Source Type: research
Magnetic Resonance Imaging Selection for Endovascular Stroke Therapy Clinical Sciences
Conclusions—Workflow in GOLIATH demonstrates that magnetic resonance imaging selection for endovascular therapy can be accomplished rapidly and within a similar time frame as computed tomography-based selection.Clinical Trial Registration—URL: https://www.clinicaltrials.gov. Unique identifier: NCT02317237.
Source: Stroke - May 25, 2018 Category: Neurology Authors: Claus Z. Simonsen, Albert J. Yoo, Mads Rasmussen, Kristina E. Sorensen, Thabele Leslie–Mazwi, Grethe Andersen, Leif H. Sorensen Tags: Magnetic Resonance Imaging (MRI), Revascularization, Ischemic Stroke Original Contributions Source Type: research
Clinical Utility of Electronic Alberta Stroke Program Early Computed Tomography Score Software in the ENCHANTED Trial Database Clinical Sciences
Background and Purpose—Clinical utility of electronic Alberta Stroke Program Early CT Score (e-ASPECTS), an automated system for quantifying signs of infarction, was evaluated in a large database of thrombolyzed patients with acute ischemic stroke.Methods—All baseline noncontrast computed tomographic scans of patients with anterior circulation acute ischemic stroke who participated in the alteplase dose arm of the randomized controlled trial ENCHANTED (Enhanced Control of Hypertension and Thrombolysis Stroke Study) were reviewed; poor quality and large (>6 mm) slice thickness were excluded. Included scans had e-ASPECTS...
Source: Stroke - May 25, 2018 Category: Neurology Authors: Simon Nagel, Xia Wang, Cheryl Carcel, Thompson Robinson, Richard I. Lindley, John Chalmers, Craig S. Anderson Tags: Cerebrovascular Disease/Stroke, Ischemic Stroke Original Contributions Source Type: research
Distribution of Lacunar Infarcts in Asians With Intracerebral Hemorrhage Brief Report
Conclusions—Our findings expand on recent work showing that lobar lacunes are more frequent in CAA-ICH than hypertensive ICH. Their independent association with lobar cerebral microbleeds and brain amyloid deposition suggests a relationship with CAA even in an Asian cohort with overall higher hypertensive load.
Source: Stroke - May 25, 2018 Category: Neurology Authors: Hsin-Hsi Tsai, Marco Pasi, Li-Kai Tsai, Ya-Fang Chen, Bo-Ching Lee, Sung-Chun Tang, Panagiotis Fotiadis, Chen-Yu Huang, Ruoh-Fang Yen, M. Edip Gurol, Jiann-Shing Jeng Tags: Intracranial Hemorrhage Brief Reports Source Type: research
Boosted Tree Model Reforms Multimodal Magnetic Resonance Imaging Infarct Prediction in Acute Stroke Clinical Sciences
Background and Purpose—Stroke imaging is pivotal for diagnosis and stratification of patients with acute ischemic stroke to treatment. The potential of combining multimodal information into reliable estimates of outcome learning calls for robust machine learning techniques with high flexibility and accuracy. We applied the novel extreme gradient boosting algorithm for multimodal magnetic resonance imaging–based infarct prediction.Methods—In a retrospective analysis of 195 patients with acute ischemic stroke, fluid-attenuated inversion recovery, diffusion-weighted imaging, and 10 perfusion parameters were derived from...
Source: Stroke - March 26, 2018 Category: Neurology Authors: Michelle Livne, Jens K. Boldsen, Irene K. Mikkelsen, Jochen B. Fiebach, Jan Sobesky, Kim Mouridsen Tags: Magnetic Resonance Imaging (MRI), Ischemic Stroke Original Contributions Source Type: research
Time From Imaging to Endovascular Reperfusion Predicts Outcome in Acute Stroke Clinical Sciences
Conclusions—Compared with target mismatch patients, those with the malignant profile experience faster infarct growth and a steeper decline in the odds of functional independence, with longer delays between baseline imaging and reperfusion. However, this does not exclude the possibility of treatment benefit in patients with a malignant profile.
Source: Stroke - March 26, 2018 Category: Neurology Authors: Jenny P. Tsai, Michael Mlynash, Soren Christensen, Stephanie Kemp, Sun Kim, Nishant K. Mishra, Christian Federau, Raul G. Nogueira, Tudor G. Jovin, Thomas G. Devlin, Naveed Akhtar, Dileep R. Yavagal, Roland Bammer, Matus Straka, Gregory Zaharchuk, Michael Tags: Revascularization, Cerebrovascular Procedures, Ischemic Stroke Original Contributions Source Type: research
Association of Progression of Carotid Artery Wall Volume and Recurrent Transient Ischemic Attack or Stroke Clinical Sciences
Conclusions—The annual progression of carotid wall volume is independently associated with recurrent ischemic cerebrovascular events, and this measurement has added value for intraplaque hemorrhage and fibrous cap rupture in predicting future events.
Source: Stroke - February 26, 2018 Category: Neurology Authors: Mingming Lu, Peng Peng, Yuanyuan Cui, Huiyu Qiao, Dongye Li, Jianming Cai, Xihai Zhao Tags: Clinical Studies, Magnetic Resonance Imaging (MRI), Atherosclerosis Original Contributions Source Type: research
Staging Hemodynamic Failure With Blood Oxygen-Level-Dependent Functional Magnetic Resonance Imaging Cerebrovascular Reactivity Clinical Sciences
We examined the agreement between the 2 imaging modalities and hypothesized that quantitative CVR can be a surrogate imaging marker to assess hemodynamic failure.Methods—Nineteen data sets of subjects with chronic cerebrovascular steno-occlusive disease (age, 60±11 years; 4 women) and unilaterally impaired perfusion reserve on Diamox-challenged (15O-)H2O PET were studied and compared with a standardized BOLD functional magnetic resonance imaging+CO2 examination within 6 weeks (8±19 days). Agreement between quantitative CBF- and CVR-based perfusion reserve was assessed. Hemodynamic failure was staged according to PET fi...
Source: Stroke - February 26, 2018 Category: Neurology Authors: Jorn Fierstra, Christiaan van Niftrik, Geoffrey Warnock, Susanne Wegener, Marco Piccirelli, Athina Pangalu, Giuseppe Esposito, Antonios Valavanis, Alfred Buck, Andreas Luft, Oliver Bozinov, Luca Regli Tags: Functional Magnetic Resonance Imaging (fMRI), Cerebrovascular Disease/Stroke Original Contributions Source Type: research
Oxidative Stress Biomarkers of Brain Damage Clinical Sciences
Conclusions—Elevated hyperacute plasma F2-isoP concentrations independently predict the occurrence of IG and IG volume in patients with acute ischemic stroke. If validated in future studies, measuring plasma F2-isoP might be helpful in the acute setting to stratify patients with acute ischemic stroke for relative severity of ischemic injury and expected progression.
Source: Stroke - February 26, 2018 Category: Neurology Authors: Svetlana Lorenzano, Natalia S. Rost, Muhib Khan, Hua Li, Fabricio O. Lima, Matthew B. Maas, Rebecca E. Green, Tijy K. Thankachan, Allison J. Dipietro, Ken Arai, Angel T. Som, Loc-Duyen D. Pham, Ona Wu, Gordon J. Harris, Eng H. Lo, Jeffrey B. Blumberg, Pau Tags: Ischemic Stroke Original Contributions Source Type: research
Relationship Between Visceral Infarction and Ischemic Stroke Subtype Brief Report
Conclusions—The prevalence of visceral infarction differed significantly across ischemic stroke subtypes. Cardioembolic and cryptogenic strokes were associated with a higher prevalence of visceral infarcts than noncardioembolic strokes.
Source: Stroke - February 26, 2018 Category: Neurology Authors: Caitlin Finn, Peter Hung, Praneil Patel, Ajay Gupta, Hooman Kamel Tags: Cerebrovascular Disease/Stroke, Ischemic Stroke, Embolism Brief Reports Source Type: research
Lacunar Infarcts, but Not Perivascular Spaces, Are Predictors of Cognitive Decline in Cerebral Small-Vessel Disease Clinical Sciences
Conclusions—Although a feature of small-vessel disease, PvS are not a predictor of cognitive decline, in contrast to lacunes. This study highlights the importance of carefully differentiating between lacunes and PvS in studies investigating vascular cognitive impairment.
Source: Stroke - February 26, 2018 Category: Neurology Authors: Philip Benjamin, Sarah Trippier, Andrew J. Lawrence, Christian Lambert, Eva Zeestraten, Owen A. Williams, Bhavini Patel, Robin G. Morris, Thomas R. Barrick, Andrew D. MacKinnon, Hugh S. Markus Tags: Aging, Magnetic Resonance Imaging (MRI), Cerebrovascular Disease/Stroke, Ischemic Stroke Original Contributions Source Type: research
Retrospective Methods Analysis of Semiautomated Intracerebral Hemorrhage Volume Quantification From a Selection of the STICH II Cohort (Early Surgery Versus Initial Conservative Treatment in Patients With Spontaneous Supratentorial Lobar Intracerebral Haematomas) Clinical Sciences
Conclusions—Although the ABC/2 formula for calculating elliptical ICH is well validated, it must be used with caution in ICH scans where the elliptical shape of ICH is a false assumption. We validated the adjustment of the ABC/2.4 method in randomization, antithrombotic-associated, heterogeneous-density, and irregular-shape ICH.Clinical Trial Registration—URL: http://www.isrctn.com/ISRCTN22153967. Unique identifier: ISRCTN22153967.
Source: Stroke - January 22, 2018 Category: Neurology Authors: Mark D. Haley, Barbara A. Gregson, W. Andrew Mould, Daniel F. Hanley, Alexander David Mendelow Tags: Computerized Tomography (CT), Intracranial Hemorrhage Original Contributions Source Type: research
Induced Hypertension for Delayed Cerebral Ischemia After Aneurysmal Subarachnoid Hemorrhage Clinical Sciences
Conclusions—Before this trial, the effectiveness of induced hypertension for DCI in aneurysmal subarachnoid hemorrhage patients was unknown because current literature consists only of uncontrolled case series. The results from our premature halted trial do not add any evidence to support induced hypertension and show that this treatment can lead to serious adverse events.Clinical Trial Registration—URL: http://www.clinicaltrials.gov. Unique identifier: NCT01613235.
Source: Stroke - December 22, 2017 Category: Neurology Authors: Celine S. Gathier, Walter M. van den Bergh, Mathieu van der Jagt, Bon H. Verweiȷ, Jan Willem Dankbaar, Marcella C. Muller, Annemarie W. Oldenbeuving, Gabriel J.E. Rinkel, Arȷen J.C. Slooter, for the HIMALAIA Study Group* Tags: Treatment, Quality and Outcomes, Cerebrovascular Disease/Stroke Original Contributions Source Type: research
Prehospital Systolic Blood Pressure Is Related to Intracerebral Hemorrhage Volume on Admission Brief Report
Background and Purpose—Ultra-early blood pressure (BP) management in the prehospital setting could improve the efficacy of this treatment on attenuating intracerebral hemorrhage (ICH) expansion. We aimed to determine the association of prehospital systolic BP (SBP) with ICH volume, ultra-early hematoma growth, and the spot sign on admission.Methods—We conducted a retrospective study of a prospective database of 219 consecutive patients with spontaneous ICH admitted to the emergency department of a tertiary stroke center during a 3-year period. Prehospital SBP and ICH volume, ultra-early hematoma growth (ICH volume/onse...
Source: Stroke - December 22, 2017 Category: Neurology Authors: David Rodriguez–Luna, Noelia Rodriguez–Villatoro, Jesus M. Juega, Sandra Boned, Marian Muchada, Estela Sanȷuan, Jorge Pagola, Marta Rubiera, Marc Ribo, Pilar Coscoȷuela, Carlos A. Molina Tags: High Blood Pressure, Computerized Tomography (CT), Intracranial Hemorrhage Brief Reports Source Type: research
