Results 101 to 110 of about 3,424,288 (235)

An eikonal model with re‐excitability for fast simulations in cardiac electrophysiology

The Journal of Physiology, EarlyView.
Abstract figure legend Restitution properties obtained from cable‐equation simulations and anisotropic remeshing informed by local fibre orientation are combined in an eikonal model with re‐excitability. The resulting reduced electrophysiology model enables efficient simulations of recurrent activation patterns, here illustrated by atrial re‐entry ...
Lia Gander, Rolf Krause, Francisco Sahli Costabal, Simone Pezzuto   +3 more
wiley   +1 more source

The multi-modality cardiac imaging approach to the Athlete's heart: an expert consensus of the European Association of Cardiovascular Imaging [PDF]

, 2015
peer reviewedThe term 'athlete's heart' refers to a clinical picture characterized by a slow heart rate and enlargement of the heart. A multi-modality imaging approach to the athlete's heart aims to differentiate physiological changes due to intensive ...
Galderisi, Maurizio, Popescu, Bogdan A., Cosyns, B, Petersen, SE, Cardim, Nuno, DAVIN, Laurent, Schroeder, S, Kitsiou, Anastasia, Cosyns, Bernard, Lancellotti, Patrizio, Petersen, Steffen E., Habib, G, Kitsiou, A, Edvardsen, T, Davin, L, Cardim, N, Bruder, Oliver, Popescu, Bogdan Alexandru, Burgstahler, C, D'Andrea, Antonello, Donal, E, Bruder, O, Plein, S, Freitas, A, Freitas, Antonio, Burgstahler, Christof, Galderisi, M, Edvardsen, Thor, Donal, Erwan, Lancellotti, P, Plein, Sven, D'Andrea, A, Schroeder, Stephen, Habib, Gilbert, Popescu, BA   +34 more
core   +1 more source

Tracing of Neuronal Connections in the Human Brain by Magnetic Resonance Imaging in vivo [PDF]

, 1990
Axon degeneration after disruption of fibre tracts in the mammalian nervous system is accompanied by myelin breakdown which leads to changes in its magnetic resonance properties.
Danek, Adrian, Bauer, W. M., Fries, Wolfgang   +2 more
core   +1 more source

Quantitative analysis of cardiac left ventricular variables obtained by MRI at 3 T : a pre- and post-contrast comparison [PDF]

, 2012
Short-axis cine images are acquired during cardiac MRI in order to determine variables of cardiac left ventricular (LV) function such as ejection fraction (EF), end-diastolic volume (EDV), end-systolic volume (ESV), stroke volume (SV) and LV mass.
Crowe, E. A., J G Houston, Houston, J. G., Lerski, R. A., R S Nicholas, S Matthew, S J Gandy, Gandy, S. J., Nicholas, R. S., Dunn, M. H., R A Lerski, E A Crowe, Waugh, S. A., S A Waugh, Matthew, S., M H Dunn   +15 more
core   +1 more source

Influence of longitudinal position on the evolution of steady-state signal in cardiac cine balanced steady-state free precession imaging

Acta Radiologica Open, 2017
Background Emerging quantitative cardiac magnetic resonance imaging (CMRI) techniques use cine balanced steady-state free precession (bSSFP) to measure myocardial signal intensity and probe underlying physiological parameters.
Tyler J Spear, Tori A Stromp, Steve W Leung, Moriel H Vandsburger   +3 more
doaj   +1 more source

A Real-Time Four-Dimensional Reconstruction Algorithm of Cine-Magnetic Resonance Imaging (Cine-MRI) Using Deep Learning. [PDF]

Cureus, 2022
Tamura Y, Demachi K, Igaki H, Okamoto H, Nakano M.   +4 more
europepmc   +1 more source

Deep Learning‐Based Dynamic Segmentation of the Left Atrium in 4D Flow MRI

Magnetic Resonance in Medicine, Volume 96, Issue 5, Page 2505-2515, November 2026.
ABSTRACT Purpose To design a deep learning pipeline for automated, time‐resolved segmentation of the left atrium (LA) from 4D flow MRI data. Methods We studied 100 individuals including 65 patients with atrial fibrillation (AF) and 35 healthy subjects (HS) resulting in 2530 4D flow MRI time‐volumes acquired in different centers and scanners.
Jonas Leite, Tom Da‐Silva Faria, Marie Shannon Soulez, Khaoula Bouazizi, Perrine Marsac, Elie Mousseaux, Jérôme Lamy, Moussa Gueda Moussa, Olivier Piot, Jacques Feignoux, Daniel Giese, Nicolas Badenco, Estelle Gandjbakhch, Alban Redheuil, Mikaël Laredo, Emilie Bollache, Nadjia Kachenoura   +16 more
wiley   +1 more source

Measurement of fasted state gastric antral motility before and after a standard bioavailability and bioequivalence 240 mL drink of water: Validation of MRI method against concomitant perfused manometry in healthy participants.

PLoS ONE, 2020
ObjectiveThe gastrointestinal environment in which drug products need to disintegrate before the drug can dissolve and be absorbed has not been studied in detail due to limitations, especially invasiveness of existing techniques.
Khaled Heissam, Nichola Abrehart, Caroline L Hoad, Jeff Wright, Alex Menys, Kathryn Murray, Paul M Glover, Geoffrey Hebbard, Penny A Gowland, Jason Baker, William L Hasler, Robin C Spiller, Maura Corsetti, James G Brasseur, Bart Hens, Kerby Shedden, Joseph Dickens, Deanna M Mudie, Greg E Amidon, Gordon L Amidon, Luca Marciani   +20 more
doaj   +1 more source

Fast Localized Calibration for Spatial‐Spectral Excitation Without Fly‐Back Gradients

Magnetic Resonance in Medicine, Volume 96, Issue 5, Page 2253-2265, November 2026.
ABSTRACT Purpose Standard spatial‐spectral excitation pulses apply a fly‐back gradient between sub‐pulses, limiting, for example, how thin the slices can be (> 4 mm). Without fly‐back gradients, slices can be as thin as 1.7 mm but require a phase calibration for the sub‐pulses with inverted gradients due to system imperfections.
Michael Schär, Sandeep K. Ganji, Robert G. Weiss, Allison G. Hays   +3 more
wiley   +1 more source

Evaluation of compressed sensing MRI for accelerated bowel motility imaging

European Radiology Experimental, 2019
Background To investigate the feasibility of compressed sensing and parallel imaging (CS-PI)-accelerated bowel motility magnetic resonance imaging (MRI) and to compare its image quality and diagnostic quality to conventional sensitivity encoding (SENSE ...
C. S. de Jonge, B. F. Coolen, E. S. Peper, A. G. Motaal, C. Y. Nio, I. Somers, G. J. Strijkers, J. Stoker, A. J. Nederveen   +8 more
doaj   +1 more source