Results 1 to 10 of about 117,269 (231)

Structure‐based finite strain modelling of the human left ventricle in diastole [PDF]

open access: yesInternational Journal for Numerical Methods in Biomedical Engineering, 2013
Finite strain analyses of the left ventricle provide important information on heart function and have the potential to provide insights into the biomechanics of myocardial contractility in health and disease. Systolic dysfunction is the most common cause
Bishop   +38 more
exaly   +5 more sources

Aortic root dimension changes during systole and diastole: evaluation with ECG-gated multidetector row computed tomography [PDF]

open access: hybridInternational Journal of Cardiovascular Imaging, 2011
Cardiac pulsatility and aortic compliance may result in aortic area and diameter changes throughout the cardiac cycle in the entire aorta. Until this moment these dynamic changes could never be established in the aortic root (aortic annulus, sinuses of ...
Ricardo P J Budde, Lex A Van Herwerden
exaly   +3 more sources

Optimal phase for coronary interpretations and correlation of ejection fraction using late-diastole and end-diastole imaging in cardiac computed tomography angiography: implications for prospective triggering [PDF]

open access: hybridInternational Journal of Cardiovascular Imaging, 2009
A typical acquisition protocol for multi-row detector computed tomography (MDCT) angiography is to obtain all phases of the cardiac cycle, allowing calculation of ejection fraction (EF) simultaneously with plaque burden.
Hussain Isma'eel   +2 more
exaly   +3 more sources

Renal denervation in heart failure with normal left ventricular ejection fraction. Rationale and design of the DIASTOLE (DenervatIon of the renAl Sympathetic nerves in hearT failure with nOrmal Lv Ejection fraction) trial [PDF]

open access: bronzeEuropean Journal of Heart Failure, 2013
Willemien L. Verloop   +11 more
exaly   +3 more sources

Estimation of End-Diastole in Cardiac Spectral Doppler Using Deep Learning

open access: greenIEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2020
Electrocardiogram (ECG) is often used together with a spectral Doppler ultrasound to separate heart cycles by determining the end-diastole locations. However, the ECG signal is not always recorded.
Tollef Struksnes Jahren   +3 more
openalex   +3 more sources

Diffusion MRI tractography of the human heart In Vivo at end-diastole and end-systole [PDF]

open access: goldJournal of Cardiovascular Magnetic Resonance, 2012
Summary Diffusion Tensor MRI (DTI) of the human heart in vivo has to date been performed in 2D and at a single phase of the cardiac cycle. Here we perform 3D tractography of the human heart in vivo at both end diastole and end systole. We show that fiber
Choukri Mekkaoui   +5 more
openalex   +2 more sources

Duration of systole and diastole for hydrodynamic testing of prosthetic heart valves: comparison between ISO 5840 standards and in vivo studies

open access: diamondBrazilian Journal of Cardiovascular Surgery, 2016
Objective To complement the ISO 5840 standards concerning the duration of left ventricular systole and diastole as a function of changes in heart rates according to in vivo studies from the physiologic literature review.
Ovandir Bazan, Jayme Pinto Ortiz
openalex   +2 more sources

Numerical Modeling of Intraventricular Flow during Diastole after Implantation of BMHV

open access: yesPLoS ONE, 2015
This work presents a numerical simulation of intraventricular flow after the implantation of a bileaflet mechanical heart valve at the mitral position.
Boyang Su   +2 more
exaly   +2 more sources

A modified Holzapfel-Ogden law for a residually stressed finite strain model of the human left ventricle in diastole

open access: yesBiomechanics and Modeling in Mechanobiology, 2013
In this work, we introduce a modified Holzapfel-Ogden hyperelastic constitutive model for ventricular myocardium that accounts for residual stresses, and we investigate the effects of residual stresses in diastole using a magnetic resonance imaging ...
Huiming Wang   +6 more
exaly   +2 more sources

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