نتایج جستجو برای: ecv

تعداد نتایج: 811  

2015
Karl P Kunze Christoph Rischpler Sylvia Schachoff Markus Schwaiger Stephan G Nekolla

Background Expansion of myocardial extracellular volume (ECV) as detected by native and post contrast T1 mapping has been associated with different types of cardiomyopathy. We hypothesize that fully quantitative evaluation of MR perfusion imaging can localize and quantify edematous ECV expansion after acute coronary events with sensitivity equivalent to ECV measurements based on T1 mapping or t...

2014
Wessel P Brouwer Emma N Baars Tjeerd Germans Karin de Boer Aernout M Beek Jolanda van der Velden Albert C van Rossum Mark BM Hofman

BACKGROUND In hypertrophic cardiomyopathy (HCM), autopsy studies revealed both increased focal and diffuse deposition of collagen fibers. Late gadolinium enhancement imaging (LGE) detects focal fibrosis, but is unable to depict interstitial fibrosis. We hypothesized that with T1 mapping, which is employed to determine the myocardial extracellular volume fraction (ECV), can detect diffuse inters...

2017
So Yun Kim Jung Yeol Han Eun Hye Chang Dong Wook Kwak Hyun Kyung Ahn Hyun Mi Ryu Moon Young Kim

OBJECTIVE We evaluated the learning curve for external cephalic version (ECV) using learning curve-cumulative sum (LC-CUSUM) analysis. METHODS This was a retrospective study involving 290 consecutive cases between October 2013 and March 2017. We evaluated the learning curve for ECV on nulli and over para 1 group using LC-CUSUM analysis on the assumption that 50% and 70% of ECV procedures succ...

2018
Yang Dong Dan Yang Yuchi Han Wei Cheng Jiayu Sun Ke Wan Hong Liu Andreas Greiser Xiaoyue Zhou Yucheng Chen

Background: Diffuse myocardial fibrosis is a common pathological process in many cardiovascular diseases. In order to determine disease, we must have standard normal imaging values. We investigated myocardial interstitial fibrosis of the left ventricle (LV) in a healthy population of Chinese adults and explored the impact of gender, age, and other physiological factors using a T1 mapping techni...

2012
Songtao Liu Jing Han Marcelo S Nacif Jacquin Jones Nadine Kawel Peter Kellman Christopher T Sibley David A Bluemke

BACKGROUND Cardiac magnetic resonance (CMR) T1 mapping has been used to characterize myocardial diffuse fibrosis. The aim of this study is to determine the reproducibility and sample size of CMR fibrosis measurements that would be applicable in clinical trials. METHODS A modified Look-Locker with inversion recovery (MOLLI) sequence was used to determine myocardial T1 values pre-, and 12 and 2...

Journal: :Journal of the American Heart Association 2015
Erik B Schelbert Kayla M Piehler Karolina M Zareba James C Moon Martin Ugander Daniel R Messroghli Uma S Valeti Chung-Chou H Chang Sanjeev G Shroff Javier Diez Christopher A Miller Matthias Schmitt Peter Kellman Javed Butler Mihai Gheorghiade Timothy C Wong

BACKGROUND Myocardial fibrosis (MF) in noninfarcted myocardium may be an interstitial disease pathway that confers vulnerability to hospitalization for heart failure, death, or both across the spectrum of heart failure and ejection fraction. Hospitalization for heart failure is an epidemic that is difficult to predict and prevent and requires potential therapeutic targets associated with outcom...

2016
Lu Lin Yining Wang Jian Cao Lingyan Kong Jing An Tianjing Zhang Bruce S Spottiswoode

Background Cardiac involvement in systemic light-chain (AL) amyloidosis is caused by the extracellular deposition of misfolded AL immunoglobulin and carries a poor prognosis. Cardiac magnetic resonance (CMR) T1 mapping and extracellular volume (ECV) measurements may have advantages over late gadolinium enhancement (LGE) for early diagnosis and quantifying of amyloid burden. The aim of this stud...

2018
Lu Lin Xiao Li Jun Feng Kai-ni Shen Zhuang Tian Jian Sun Yue-ying Mao Jian Cao Zheng-yu Jin Jian Li Joseph B. Selvanayagam Yi-ning Wang

BACKGROUND Cardiac impairment is associated with high morbidity and mortality in immunoglobulin light chain (AL) type amyloidosis, for which early identification and risk stratification is vital. For myocardial tissue characterization, late gadolinium enhancement (LGE) is a classic and most commonly performed cardiovascular magnetic resonance (CMR) parameter. T1 mapping with native T1 and extra...

Journal: :Journal of applied physiology 1998
F Zhu D Schneditz E Wang N W Levin

Extracellular volume (ECV) of arms, trunk, and legs determined from segmental bioimpedance data in 11 healthy men (31.6 +/- 7 yr) obtained at the end of a 30-min equilibration phase in the supine body position was compared with ECV determined from whole body measurements (ECVWB). ECV was calculated from extracellular resistance (RECV) identified from the bioimpedance spectrum for a range of 10 ...

Journal: :European heart journal cardiovascular Imaging 2015
Andrea Barison Luna Gargani Daniele De Marchi Giovanni Donato Aquaro Serena Guiducci Eugenio Picano Marco Matucci Cerinic Alessandro Pingitore

AIMS Systemic sclerosis (SSc) may induce cardiac fibrosis and systo-diastolic dysfunction. Cardiovascular magnetic resonance (CMR) can detect replacement myocardial fibrosis with late gadolinium enhancement (LGE) and interstitial myocardial fibrosis with T1 mapping techniques. The aim of the study was to detect subclinical cardiac involvement with CMR in paucisymptomatic SSc patients with no pr...

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