Results 91 to 100 of about 48,972 (257)

Automatic Segmentation of the Left Ventricle in Cardiac CT Angiography Using Convolutional Neural Network

, 2016
Accurate delineation of the left ventricle (LV) is an important step in evaluation of cardiac function. In this paper, we present an automatic method for segmentation of the LV in cardiac CT angiography (CCTA) scans.
de Vos, Bob D., Isgum, Ivana, Leiner, Tim, van Hamersvelt, Robbert W., Viergever, Max A., Zreik, Majd   +5 more
core   +1 more source

Interplay of Probe Stability and Oscillation During Very‐High‐Power Short‐Duration Ablation in Pulmonary Vein Isolation for Atrial Fibrillation

Pacing and Clinical Electrophysiology, EarlyView.
This graphical abstract presents a comprehensive analysis of probe stability and oscillation during very high‐power short‐duration (vHPSD) pulmonary vein isolation (PVI) for atrial fibrillation. The findings indicate that oscillation velocity serves as a more reliable predictor of impedance drop and temperature changes than contact force alone ...
Ernesto Cristiano, Eduardo Celentano, Barbara Ignatiuk, Martina Renda, Elena Bia, Raffaele Rainone, Jacopo Viganò, Natasja M. S. De Groot   +7 more
wiley   +1 more source

Endocardium [PDF]

, 2020
Joachim Feger, Arlene Campos, Yuranga Weerakkody   +2 more
openaire   +2 more sources

Cardiac remodelling in type 2 diabetes: Pathophysiological mechanisms and opportunities for multiscale computational modelling and simulation

The Journal of Physiology, EarlyView.
Abstract figure legend Overview of multiscale cardiac remodelling in type 2 diabetes and how to model and simulate these changes using a human‐based, multiscale computational framework. Cardiac remodelling in type 2 diabetes occurs at ionic channel, protein, cellular, tissue and whole‐organ level, affecting the electrophysiological function, mechanical
Ambre Bertrand, Jakub Tomek, Blanca Rodriguez   +2 more
wiley   +1 more source

In silico modelling of multi‐electrode arrays for enhancing cardiac drug testing on hiPSC‐CM heterogeneous tissues

The Journal of Physiology, EarlyView.
Abstract figure legend Schematic overview of the experimental and computational framework for investigating hiPSC‐CM electrophysiology with MEA systems. The MEA‐based model integrates experimental data with phenotype‐specific ionic models and tissue‐level heterogeneity.
Sofia Botti, Rolf Krause, Luca F. Pavarino   +2 more
wiley   +1 more source

Elucidating the cellular determinants of the end‐systolic pressure‐volume relationship of the heart via computational modelling

The Journal of Physiology, EarlyView.
Abstract figure legend Using a multiscale computational model of left ventricular electromechanics, we investigated how sarcomere dynamics influence the end‐systolic pressure‐volume (ESPV) relationship in ejecting beats compared to isovolumetric beats.
Francesco Regazzoni, Corrado Poggesi, Cecilia Ferrantini   +2 more
wiley   +1 more source

Uncertainty quantification via polynomial chaos expansion of myocardial fibre orientation and cardiac activation patterns

The Journal of Physiology, EarlyView.
Abstract figure legend Graphical representation of methods. We implemented three biventricular geometric models (Zenger et al., 2020) with rule‐based myocardial fibre orientations (Bayer et al., 2018). We evaluated variability in the fibre orientation via four sets of parameter distributions to determine the role of the primary and imbrication angles ...
Lindsay C. R. Tanner, Anna Busatto, Jake A. Bergquist, Wilson W. Good, Brian Zenger, Gernot Plank, Akil Narayan, Karli Gillette, Rob S. MacLeod   +8 more
wiley   +1 more source

Effect of myocardial heterogeneity on ventricular electro-mechanical responses: a computational study

BioMedical Engineering OnLine, 2019
Background The heart wall exhibits three layers of different thicknesses: the outer epicardium, mid-myocardium, and inner endocardium. Among these layers, the mid-myocardium is typically the thickest.
Nida Dusturia, Seong Wook Choi, Kwang Soup Song, Ki Moo Lim   +3 more
doaj   +1 more source

The role of M cells and the long QT syndrome in cardiac arrhythmias: simulation studies of reentrant excitations using a detailed electrophysiological model

, 2004
In this numerical study, we investigate the role of intrinsic heterogeneities of cardiac tissue due to M cells in the generation and maintenance of reentrant excitations using the detailed Luo-Rudy dynamic model. This model has been extended to include a
Cherry E. M., Diego J. M. D., Hervé Henry, Wouter-Jan Rappel   +3 more
core   +1 more source

Electrophysiological characterization of pre‐adolescents born with intrauterine growth restriction: insights from clinical and computational data

The Journal of Physiology, EarlyView.
Abstract figure legend Depolarization and repolarization duration analysis was conducted in preadolescent groups with IUGR and controls using a 12‐lead ECG. Principal component analysis was applied over the 12‐lead ECGs to generate spatially transformed leads better suited for robust ECG fiducial points detection.
Freddy L. Bueno‐Palomeque, Ernesto Zacur, Esther Pueyo, Fàtima Crispi, Pablo Laguna, Ana Mincholé   +5 more
wiley   +1 more source