Filtered By:
Condition: Thrombosis
Procedure: MRI Scan

This page shows you your search results in order of relevance. This is page number 2.

Order by Relevance | Date

Total 457 results found since Jan 2013.

Tenecteplase-Tissue-Type Plasminogen Activator Evaluation for Minor Ischemic Stroke With Proven Occlusion Clinical Sciences
Conclusions— Administration of TNK–tissue-type plasminogen activator in minor stroke with intracranial occlusion is both feasible and safe. A larger randomized controlled trial is needed to prove that this treatment is efficacious. Clinical Trial Registration— URL: http://www.clinicaltrials.gov. Unique identifier: NCT01654445.
Source: Stroke - February 23, 2015 Category: Neurology Authors: Coutts, S. B., Dubuc, V., Mandzia, J., Kenney, C., Demchuk, A. M., Smith, E. E., Subramaniam, S., Goyal, M., Patil, S., Menon, B. K., Barber, P. A., Dowlatshahi, D., Field, T., Asdaghi, N., Camden, M.-C., Hill, M. D., for the TEMPO-1 Investigators Tags: Computerized tomography and Magnetic Resonance Imaging, Thrombolysis Clinical Sciences Source Type: research

Alpha 1-Antitrypsin Therapy Mitigated Ischemic Stroke Damage in Rats
Our objective is to develop a new therapy for the treatment of stroke. Currently, the only effective therapy for acute ischemic stroke is the thrombolytic agent recombinant tissue plasminogen activator. α1-Antitrypsin (AAT), a serine proteinase inhibitor with potent anti-inflammatory, anti-apoptotic, antimicrobial, and cytoprotective activities, could be beneficial in stroke. The goal of this study is to test whether AAT can improve ischemic stroke outcome in an established rat model. Middle cerebral artery occlusion was induced in male rats via intracranial (i.c.) microinjection of endothelin-1. Five to 10 minutes after...
Source: Journal of Stroke and Cerebrovascular Diseases - March 3, 2014 Category: Neurology Authors: Huong L. Moldthan, Aaron C. Hirko, Jeffrey S. Thinschmidt, Maria B. Grant, Zhimin Li, Joanna Peris, Yuanqing Lu, Ahmed S. Elshikha, Michael A. King, Jeffrey A. Hughes, Sihong Song Tags: Original Articles Source Type: research

Cervical Arterial Dissections and Association With Cervical Manipulative Therapy: A Statement for Healthcare Professionals From the American Heart Association/American Stroke Association AHA/ASA Scientific Statement
Conclusions— CD is an important cause of ischemic stroke in young and middle-aged patients. CD is most prevalent in the upper cervical spine and can involve the internal carotid artery or vertebral artery. Although current biomechanical evidence is insufficient to establish the claim that CMT causes CD, clinical reports suggest that mechanical forces play a role in a considerable number of CDs and most population controlled studies have found an association between CMT and VAD stroke in young patients. Although the incidence of CMT-associated CD in patients who have previously received CMT is not well established, an...
Source: Stroke - September 22, 2014 Category: Neurology Authors: Biller, J., Sacco, R. L., Albuquerque, F. C., Demaerschalk, B. M., Fayad, P., Long, P. H., Noorollah, L. D., Panagos, P. D., Schievink, W. I., Schwartz, N. E., Shuaib, A., Thaler, D. E., Tirschwell, D. L., on behalf of the American Heart Association Strok Tags: AHA Statements and Guidelines AHA/ASA Scientific Statement Source Type: research

Early Magnetic Resonance Imaging Decreases Hospital Length of Stay in Patients with Ischemic Stroke
Imaging modalities are important part of stroke evaluation. Noncontrast head computed tomography (CT) is the initial imaging modality in acute stroke and although important to rule out acute hemorrhage and making a decision on thrombolytic treatment, ischemic changes may not be visible on CT for up to 24 hours. Magnetic resonance imaging (MRI) brain is an invaluable tool to confirm an ischemic stroke and facilitates stroke evaluation. Objective of this study was to investigate the correlation between time to MRI and length of hospital stay.
Source: Journal of Stroke and Cerebrovascular Diseases - November 3, 2018 Category: Neurology Authors: Bharti Manwani, Subhendu Rath, Nora S. Lee, Ilene Staff, Christoph Stretz, Janhavi Modak, Pasquale F. Finelli Source Type: research

Ischemic Stroke in Evolution: Predictive Value of Perfusion Computed Tomography
Background: Various perfusion computed tomography (PCT) parameters have been used to identify tissue at risk of infarction in the setting of acute stroke. The purpose of this study was to examine predictive value of the PCT parameters commonly used in clinical practice to define ischemic penumbra. The patient selection criterion aimed to exclude the effect of thrombolysis from the imaging data.Methods: Consecutive acute stroke patients were screened and a total of 18 patients who initially underwent PCT and CT angiogram (CTA) on presentation but did not qualify to receive thrombolytic therapy were selected. The PCT images ...
Source: Journal of Stroke and Cerebrovascular Diseases - August 19, 2013 Category: Neurology Authors: Amir Kheradmand, Marc Fisher, David Paydarfar Tags: Original Articles Source Type: research

Advantages of susceptibility‐weighted magnetic resonance sequences in the visualization of intravascular thrombi in acute ischemic stroke
ConclusionsSWAN was more sensitive than T2* in the visualization of SVS in the intracranial arteries during the acute phase of ischemic stroke. Our study shows that the low number of SVS visualized using T2* in previous studies is probably related to a lack of sensitivity of the sequence, rather than to the nature or age of the thrombus. The greater sensitivity of SWAN seems to be linked to the visualization of SVS in cases of small thrombi.
Source: International Journal of Stroke - October 1, 2014 Category: Neurology Authors: R. Allibert, C. Billon Grand, F. Vuillier, F. Cattin, E. Muzard, A. Biondi, T. Moulin, E. Medeiros Tags: Short Report Source Type: research

Imaging of occlusive thrombi in acute ischemic stroke
Thrombi, or clots, often occlude proximal segments of the cerebral arterial circulation in acute ischemic stroke. Thromboembolic occlusion or thrombi superimposed on atherosclerotic plaque are the principal focus of acute stroke therapies such as thrombolysis or thrombectomy. We review the imaging characteristics of thrombi on multimodal computed tomography and magnetic resonance imaging, angiography, and ultrasonography, summarizing recent studies that facilitate therapeutic decision‐making from these noninvasive studies. Information about the location, size, and imaging characteristics can be ascertained using these te...
Source: International Journal of Stroke - December 26, 2014 Category: Neurology Authors: Gregory G. Gasparian, Nerses Sanossian, Mark S. Shiroishi, David S. Liebeskind Tags: Review Source Type: research

Stroke: Highlights of Selected Articles Stroke: Highlights of Selected Articles
Source: Stroke - June 26, 2016 Category: Neurology Tags: Stem Cells, Magnetic Resonance Imaging (MRI), Quality and Outcomes, Ischemic Stroke, Thrombosis Stroke: Highlights of Selected Articles Source Type: research

Infarct Pattern and Collateral Status in Adult Moyamoya Disease Clinical Sciences
Conclusions—In the studied population of adult MMD patients, embolic phenomenon played an important role in ischemic stroke. Therapeutic strategies against thromboembolism, as well as collateral enhancing strategies targeting improvement of hemodynamic status or increased washout of emboli, are warranted.
Source: Stroke - December 22, 2016 Category: Neurology Authors: Dong Yeop Kim, Jeong Pyo Son, Je Young Yeon, Gyeong-Moon Kim, Jong-Soo Kim, Seung-Chyul Hong, Oh Young Bang Tags: Mechanisms, Magnetic Resonance Imaging (MRI), Ischemic Stroke, Moyamoya Original Contributions Source Type: research

Is Unexplained Early Neurological Deterioration After Intravenous Thrombolysis Associated With Thrombus Extension? Clinical Sciences
Conclusions—In this study, unexplained END occurring after thrombolysis was independently associated with susceptibility vessel sign extension, suggesting in situ thrombus extension or re-embolization. These findings strengthen the need to further investigate early post-thrombolysis administration of antithrombotics to reduce the risk of this ominous clinical event.
Source: Stroke - January 22, 2017 Category: Neurology Authors: Pierre Seners, Robert Hurford, Marie Tisserand, Guillaume Turc, Laurence Legrand, Olivier Naggara, Jean-Louis Mas, Catherine Oppenheim, Jean-Claude Baron Tags: Magnetic Resonance Imaging (MRI), Ischemic Stroke Original Contributions Source Type: research

Density of Thrombus on Admission CT Predicts Revascularization Efficacy in Large Vessel Occlusion Acute Ischemic Stroke Brief Reports
Conclusions— Thrombi with lower HU on NECT appear to be more resistant to pharmacological lysis and mechanical thrombectomy. Measuring thrombus density on admission NECT provides a rapid method to analyze clot composition, a potentially useful discriminator in selecting the most appropriate reperfusion strategy for an individual patient.
Source: Stroke - December 24, 2012 Category: Neurology Authors: Moftakhar, P., English, J. D., Cooke, D. L., Kim, W. T., Stout, C., Smith, W. S., Dowd, C. F., Higashida, R. T., Halbach, V. V., Hetts, S. W. Tags: Acute Cerebral Infarction, Angiography, Computerized tomography and Magnetic Resonance Imaging Brief Reports Source Type: research

Validating Imaging Biomarkers of Cerebral Edema in Patients With Severe Ischemic Stroke
Background: There is no validated neuroimaging marker for quantifying brain edema. We sought to test whether magnetic resonance imaging (MRI)–based metrics would reliably change during the early subacute period in a manner consistent with edema and whether they would correlate with relevant clinical endpoints.Methods: Serial MRI studies from patients in the Echoplanar Imaging Thrombolytic Evaluation Trial with initial diffusion-weighted imaging (DWI) lesion volume>82 cm3 were analyzed. Two independent readers outlined the hemisphere and lateral ventricle on the involved side and calculated respective volumes at baseline...
Source: Journal of Stroke and Cerebrovascular Diseases - February 13, 2012 Category: Neurology Authors: Albert J. Yoo, Kevin N. Sheth, W. Taylor Kimberly, Zeshan A. Chaudhry, Jordan J. Elm, Sven Jacobson, Stephen M. Davis, Geoffrey A. Donnan, Gregory W. Albers, Barney J. Stern, R. Gilberto González Tags: Original Articles Source Type: research

Translational perspectives on perfusion–diffusion mismatch in ischemic stroke
Magnetic resonance imaging has tremendous potential to illuminate ischemic stroke pathophysiology and guide rational treatment decisions. Clinical applications to date have been largely limited to trials. However, recent analyses of the major clinical studies have led to refinements in selection criteria and improved understanding of the potential implications for the risk vs. benefit of thrombolytic therapy. In parallel, preclinical studies have provided complementary information on the evolution of stroke that is difficult to obtain in humans due to the requirement for continuous or repeated imaging and pathological veri...
Source: International Journal of Stroke - October 1, 2013 Category: Neurology Authors: Bruce C. V. Campbell, I. Mhairi Macrae Tags: Review Source Type: research

A Case of Recurrent Ischemic Stroke Involving Subacute, Progressive Intracranial Cerebral Arterial Sclerosis Prior to Diagnosis with -mutated Polycythemia Vera
A 58-year-old man presenting with no vascular risk factors visited our hospital with right hemiparesis and total aphasia. Diffusion-weighted magnetic resonance imaging of the brain showed multiple hyperintensities in watershed distributions in the left hemisphere. Magnetic resonance angiography (MRA) revealed stenosis of the middle cerebral artery, despite normal MRA findings 2 months prior. One year after the first stroke, the patient experienced a recurrent ischemic stroke involving the left anterior choroidal artery, pulmonary embolism, and deep venous thrombosis.
Source: Journal of Stroke and Cerebrovascular Diseases - September 29, 2015 Category: Neurology Authors: Tomohisa Nezu, Shiro Aoki, Kazuhide Ochi, Sayaka Sugihara, Tetsuya Takahashi, Naohisa Hosomi, Hirofumi Maruyama, Masayasu Matsumoto Tags: Case Studies Source Type: research

Voxel-Based Lesion Mapping of Cryptogenic Stroke in Patients with Advanced Cancer: A Detailed Magnetic Resonance Imaging Analysis of Distribution Pattern
Ischemic stroke is one form of cancer-associated thrombosis that can greatly worsen a patient's performance status. The present investigation aimed to elucidate the characteristic distribution pattern(s) of cryptogenic stroke lesions using a voxel-based lesion-mapping technique and examine the differences in clinical manifestations between cryptogenic and conventional strokes in patients with advanced cancer.
Source: Journal of Stroke and Cerebrovascular Diseases - March 28, 2017 Category: Neurology Authors: Takamune Achiha, Masatoshi Takagaki, Hiroshi Oe, Mio Sakai, Hitoshi Matsui, Katsuhiko Nakanishi, Tomohiko Ozaki, Yasunori Fujimoto, Toshiki Yoshimine, Katsuyuki Nakanishi, Manabu Kinoshita Source Type: research