نتایج جستجو برای: ecv

تعداد نتایج: 811  

2016
Elizabeth Jenista David C Wendell Han W Kim Dina Labib Sung-A Chang Wolfgang G Rehwald Enn-Ling Chen Michele Parker Raymond Kim

Background Delineation of diseased and normal tissue is fundamental to identifying cardiac pathology. Studies suggest that parametric extracellular volume fraction (ECV) imaging is superior to conventional delayed enhancement for detection of diffuse, global myocardial disease. Conversely, the sensitivity of ECV for the detection of focal disorders is unclear. This may be important for subendoc...

2016
Stefania Rosmini Heerajnarain Bulluck Thomas A Treibel Amna Abdel-Gadir Anish N Bhuva Veronica Culotta Ahmed Merghani Viviana Maestrini Anna S Herrey Peter Kellman Charlotte Manisty James Moon

Background Measurement of native T1 and extracellular volume fraction (ECV) allow quantification of diffuse myocardial fibrosis. Normal references ranges are not definitively established. The concept of increasing fibrosis with age is widely held, despite a lack of supportive evidence from tissue studies some of which say the opposite (Olivetti 1991) or point to other age changes eg myocardial ...

2013
Hoshang Farhad Siddique Abbasi Ravi Shah Bobby Heydari Tomas G Neilan Jiazuo H Feng Michael Jerosch-Herold Raymond Y Kwong

Background Changes in left ventricular compliance caused by diffuse fibrosis after MI may result in diastolic dysfunction and left atrial enlargement. We sought to test the hypothesis that left atrial volume is associated with ECV (a marker of diffuse myocardial fibrosis) during the sub-acute phase of infarction and can predict the increase of ECV during the ensuing months of infarct healing. W...

2015
Andreas Kammerlander Caroline Tufaro Alina F Bachmann Beatrice A Marzluf Stefan Aschauer Andreas Greiser Diana Bonderman Julia Mascherbauer

Background Accumulation of diffuse myocardial fibrosis / extracellular volume (ECV) in the myocardium is common to various cardiac diseases and is associated with an unfavorable prognosis. Various cardiac magnetic resonance (CMR) T1 mapping techniques have recently been proposed for the quantification of ECV, including: 1. Modified Look-Locker Inversion recovery (MOLLI) T1 mapping including cal...

Journal: :Circulation. Cardiovascular imaging 2013
Carolyn Y Ho Siddique A Abbasi Tomas G Neilan Ravi V Shah Yucheng Chen Bobak Heydari Allison L Cirino Neal K Lakdawala E John Orav Arantxa González Begoña López Javier Díez Michael Jerosch-Herold Raymond Y Kwong

BACKGROUND Myocardial fibrosis is a hallmark of hypertrophic cardiomyopathy (HCM) and a potential substrate for arrhythmias and heart failure. Sarcomere mutations seem to induce profibrotic changes before left ventricular hypertrophy (LVH) develops. To further evaluate these processes, we used cardiac magnetic resonance with T1 measurements on a genotyped HCM population to quantify myocardial e...

Journal: :Circulation journal : official journal of the Japanese Circulation Society 2016
Amaya García-Fernández Francisco Marín Vanessa Roldán José M Gómez-Sansano Diana Hernández-Romero Mariano Valdés Juan G Martinez-Martinez Francisco Sogorb-Garri Gregory Yh Lip

BACKGROUND Patients with nonvalvular atrial fibrillation (AF) who undergo electrical cardioversion (ECV) tend to be younger and have less comorbidity. Long-term anticoagulation after ECV should be based on thromboembolic risk. We sought to study the long-term incidence of thromboembolic events (TE), factors related to TE and compare the predictive value of the CHADS2and CHA2DS2-VASc scores in t...

2017
Maren Maanja Björn Wieslander Todd T. Schlegel Ljuba Bacharova Hussein Abu Daya Yaron Fridman Timothy C. Wong Erik B. Schelbert Martin Ugander

BACKGROUND Myocardial fibrosis quantified by myocardial extracellular volume fraction (ECV) and left ventricular mass (LVM) index (LVMI) measured by cardiovascular magnetic resonance might represent independent and opposing contributors to ECG voltage measures of left ventricular hypertrophy (LVH). Diffuse myocardial fibrosis can occur in LVH and interfere with ECG voltage measures. This phenom...

Journal: :European Journal of Echocardiography 2023

Abstract Funding Acknowledgements Type of funding sources: None. Background Myocardial fibrosis (MF) is a common endpoint in the majority pathological mechanisms affecting cardiac muscle, ultimately resulting failure. Cardiovascular magnetic resonance (CMR) with gadolinium-based contrast agent and T1 mapping technique able to deliver non-invasive quantification extracellular volume (ECV) expans...

2011
Kostas Polymeropoulos Vassilios P. Vassilikos Lilian Mantziari Stelios Paraskevaidis Theodoros D. Karamitsos Sotirios Mochlas Georgios Parcharidis Georgios Louridas Ioannis H. Styliadis

Direct current electrical cardioversion (DC-ECV) is the preferred treatment for the termination of paroxysmal atrial fibrillation (AF) that occurs during radiofrequency ablation (RFA) of supraventricular tachycardias (SVT). Intravenous Ibutilide may be an alternative option in this setting. Thirty-four out of 386 patients who underwent SVT-RFA presented paroxysmal AF during the procedure and we...

Journal: :European heart journal cardiovascular Imaging 2014
Anca Florian Anna Ludwig Sabine Rösch Handan Yildiz Udo Sechtem Ali Yilmaz

AIM Cardiac involvement with progressive myocardial fibrosis leading to dilated cardiomyopathy is a major cause of death in muscular dystrophy patients. Extracellular volume fraction (ECV) measurement based on T1-mapping pre- and post-contrast promises the detection of early 'diffuse' myocardial fibrosis that cannot be depicted by conventional contrast-imaging based on late gadolinium enhanceme...

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