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Specialty: Radiology
Condition: Atrial Fibrillation

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Total 179 results found since Jan 2013.

Can neuroimaging differentiate PFO and AF-related cardioembolic stroke from the other embolic sources? Clinical-radiological correlation on a retrospective study
ConclusionIn clinical practice, PFO may be considered a cause of cortical stroke on the basis of radiological findings, when VB vascular territory or MS brain involvement is present in younger patients (<50 age).
Source: La Radiologia Medica - February 20, 2017 Category: Radiology Source Type: research

Diagnostic Accuracy of Electrocardiogram-Gated Thoracic Computed Tomography Angiography without Heart Rate Control for Detection of Significant Coronary Artery Stenosis in Patients with Acute Ischemic Stroke: A Comparative Study.
Conclusion: Electrocardiogram-gated TCTA without HR control facilitates the identification of significant coronary stenosis in patients with ischemic stroke. PMID: 30174480 [PubMed - in process]
Source: Korean Journal of Radiology - September 5, 2018 Category: Radiology Tags: Korean J Radiol Source Type: research

Statistical shape analysis of the left atrial appendage predicts stroke in atrial fibrillation
AbstractThe shape of the left atrium (LA) and left atrial appendage (LAA) have been shown to predict stroke in patients with atrial fibrillation (AF). Prior studies rely on qualitative assessment of shape, which limits reproducibility and clinical utility. Statistical shape analysis (SSA) allows for quantitative assessment of shape. We use this method to assess the shape of the LA and LAA and predict stroke in patients with AF. From a database of AF patients who had previously undergone MRI of the LA, we identified 43 patients with AF who subsequently had an ischemic stroke. We also identified a cohort of 201 controls with...
Source: The International Journal of Cardiovascular Imaging - May 6, 2021 Category: Radiology Source Type: research

The incidence of stroke in patients with early echocardiography after acute myocardial infarction
AbstractLeft ventricular (LV) thrombus formation after ST-elevation myocardial infarction (STEMI) increases the risk of stroke. In our center, most echocardiograms are performed within 2  days post-STEMI. However, LV thrombi often become visible later. We assessed the 1-year incidence of stroke in patients without LV thrombus on echocardiography performed early (1–2 days) vs. later (day ≥ 3) post-STEMI. This retrospective observational study included 416 patients with acut e STEMI. Patients with atrial fibrillation were excluded. All patients underwent echocardiography during admission. Patients with stroke withi...
Source: The International Journal of Cardiovascular Imaging - July 12, 2021 Category: Radiology Source Type: research

Association of Left Vertebral Artery Hypoplasia with Posterior Circulation Stroke and the Functional Outcome of Patients with Atrial Fibrillation-Related Cardioembolic Stroke EXTRACRANIAL VASCULAR
CONCLUSIONS: Patients with cardioembolic stroke and left vertebral artery hypoplasia had posterior circulation stroke, basilar artery occlusion, and poor functional outcomes after 3 months.
Source: American Journal of Neuroradiology - January 11, 2023 Category: Radiology Authors: Bae, J.- H., Ryu, J.- C., Ha, S. H., Kim, B. J., Kang, D.- W., Kwon, S. U., Kim, J.- S., Chang, J. Y. Tags: EXTRACRANIAL VASCULAR Source Type: research

Regional function analysis of left atrial appendage using motion estimation CT and risk of stroke in patients with atrial fibrillation
Conclusion LAA regional dysfunction is associated with stroke/TIA in AF patients. Our results offer a basis for a prospective study to determine the role of LAA regional dysfunction by iME in predicting cerebrovascular events such as stroke or TIA.
Source: European Heart Journal Cardiovascular Imaging - June 13, 2016 Category: Radiology Authors: Al-Issa, A., Inoue, Y., Cammin, J., Tang, Q., Nazarian, S., Calkins, H., Fishman, E. K., Taguchi, K., Ashikaga, H. Tags: ORIGINAL ARTICLES Source Type: research

Left Atrial Septal Pouch—Is it Really a New Risk Factor for Ischemic Stroke?: Subanalysis of the ASSAM Study
Purpose: The atrial septal pouch is an anatomic variant of the interatrial septum caused by incomplete fusion of the septum primum and secundum. It is debatable whether coexistence of septal pouch and atrial fibrillation (AF) increases the risk of stroke. Thus, the aim of the study was to evaluate the coexistence of left atrial septal pouch (LASP) and AF in patients with a history of stroke in comparison with those without an earlier history of stroke. Materials and Methods: We analyzed 145 patients with AF (68 in the study group, 77 in the control group). The study group consisted of patients with previous stro...
Source: Journal of Thoracic Imaging - April 28, 2022 Category: Radiology Tags: Original Articles Source Type: research

Assessment of Intracranial Collaterals on CT Angiography in Anterior Circulation Acute Ischemic Stroke FELLOWS' JOURNAL CLUB
CONCLUSIONS: Only the Miteff scoring system for intracranial collaterals is reliable for predicting favorable outcome in thrombolyzed acute anterior circulation ischemic stroke. However, poor outcomes can be predicted by most of the existing methods of scoring intracranial collaterals.
Source: American Journal of Neuroradiology - February 11, 2015 Category: Radiology Authors: Yeo, L. L. L., Paliwal, P., Teoh, H. L., Seet, R. C., Chan, B. P., Ting, E., Venketasubramanian, N., Leow, W. K., Wakerley, B., Kusama, Y., Rathakrishnan, R., Sharma, V. K. Tags: FELLOWS ' JOURNAL CLUB Source Type: research

Extracranial Carotid Artery Disease: Risk Factors and Outcomes in Patients With Acute Critical Hemispheric Ischemic Stroke
Conclusions— Occlusive carotid artery disease is not uncommon among Chinese patients who have had an acute critical hemispheric infarction. Older age is the factor most significantly correlated with a poor outcome, and occlusive carotid disease is the factor most significantly correlated with death.
Source: Journal of Ultrasound in Medicine - January 21, 2016 Category: Radiology Authors: Lim, S.-N., Chang, Y.-J., Lin, S.-K. Tags: Original Research Source Type: research

Complications of Endovascular Treatment for Acute Stroke in the SWIFT Trial with Solitaire and Merci Devices EVIDENCE-BASED MEDICINE LEVEL 2
CONCLUSIONS: Understanding of procedural complications is important for treatment of patients with stroke after endovascular treatment. We observed fewer endovascular complications with the Solitaire FR device treatment compared with Merci device treatment, particularly symptomatic cerebral hemorrhage.
Source: American Journal of Neuroradiology - March 13, 2014 Category: Radiology Authors: Akins, P. T., Amar, A. P., Pakbaz, R. S., Fields, J. D., on behalf of the SWIFT Investigators Tags: EVIDENCE-BASED MEDICINE LEVEL 2 Source Type: research

Evolution of Stroke Prevention in Nonvalvular Atrial Fibrillation Patients ∗
The PREVAIL (Watchman LAA Closure Device in Patients With Atrial Fibrillation Versus Long Term Warfarin Therapy) trial is the latest in the series of studies evaluating left atrial appendage (LAA) occlusion with the Watchman device (Boston Scientific, Natick, Massachusetts) as an alternative to warfarin therapy for the prevention of stroke in patients with nonvalvular atrial fibrillation (NVAF). The PREVAIL trial was initially designed as a follow-up study to PROTECT AF (Watchman Left Atrial Appendage Closure Technology for Embolic Protection in Patients With Atrial Fibrillation), which demonstrated noninferiority to warfa...
Source: Journal of the American College of Cardiology: Cardiovascular Imaging - July 3, 2014 Category: Radiology Source Type: research

Etiologies of internal carotid artery pseudo-occlusions in acute stroke patients: what neurointerventionalists can expect.
Abstract In cases of acute stroke, differentiation between an occluded and a patent internal carotid artery (ICA) is crucial for diagnosis and management. Although computed tomography angiography (CTA) can be highly accurate in defining high-grade stenosis and ICA occlusions, misleading ICA occlusion patterns are not rare in acute stroke patients. We investigated the underlying causes of ICA pseudo-occlusions with CTA with respect to digital subtraction angiography (DSA). 11 out of 72 patients had pseudo-occlusion on CTA. Of these, there were three cases of tandem occlusions accompanying high-grade ICA stenosis, f...
Source: The British Journal of Radiology - December 19, 2016 Category: Radiology Authors: Akpınar S, Gelener P, Yilmaz G Tags: Br J Radiol Source Type: research

Rationale and design for a randomized Comparison of Efficacy and Safety between Aspirin and Clopidogrel in Atrial Fibrillation Patients with Low Stroke Risk: CESAC-AF trial
Atrial fibrillation (AF) increases the risk of thromboembolic stroke. An oral anticoagulant should be administrated to prevent stroke in patients with moderate stroke risk (ie, CHA2DS2-VASc score>2). If the stroke risk is low (i.e. the score=1), however, antiplatelet agent such as aspirin is widely used. Aspirin can cause peptic ulcer disease (PUD) while its alternative, clopidogrel, theoretically does not.
Source: Contemporary Clinical Trials - June 19, 2017 Category: Radiology Authors: Sang Min Park, Haemin Jeong, Mi-Hyang Jung, Kyung Soon Hong, Myeong-Ki Hong, Chang Seok Bang, Christopher Y. Kim Source Type: research

FLAIR Distal Hyperintense Vessels as a Marker of Perfusion‐Diffusion Mismatch in Acute Stroke
CONCLUSIONSDHV may be a surrogate marker for PDM in patients with hyperacute ischemic stroke.
Source: Journal of Neuroimaging - January 14, 2013 Category: Radiology Authors: Diogo C. Haussen, Sebastian Koch, Efrat Saraf‐Lavi, Tiesong Shang, Sushrut Dharmadhikari, Dileep R. Yavagal Tags: Clinical Investigative Study Source Type: research

The Effect of Dabigatran Plasma Concentrations and Patient Characteristics on the Frequency of Ischemic Stroke and Major Bleeding in Atrial Fibrillation Patients The RE-LY Trial (Randomized Evaluation of Long-Term Anticoagulation Therapy)
ObjectivesThe goal of this study was to analyze the impact of dabigatran plasma concentrations, patient demographics, and aspirin (ASA) use on frequencies of ischemic strokes/systemic emboli and major bleeds in atrial fibrillation patients.BackgroundThe efficacy and safety of dabigatran etexilate were demonstrated in the RE-LY (Randomized Evaluation of Long-Term Anticoagulation Therapy) trial, but a therapeutic concentration range has not been defined.MethodsIn a pre-specified analysis of RE-LY, plasma concentrations of dabigatran were determined in patients treated with dabigatran etexilate 110 mg twice daily (bid) or 150...
Source: Journal of the American College of Cardiology: Cardiovascular Imaging - January 27, 2014 Category: Radiology Source Type: research