Results 81 to 90 of about 4,669,181 (269)

Improving visualization of 4D flow cardiovascular magnetic resonance with four-dimensional angiographic data: generation of a 4D phase-contrast magnetic resonance CardioAngiography (4D PC-MRCA)

Journal of Cardiovascular Magnetic Resonance, 2017
Magnetic Resonance Angiography (MRA) and Phase-Contrast MRA (PC-MRA) approaches used for assessment of cardiovascular morphology typically result in data containing information from the entire cardiac cycle combined into one 2D or 3D image.
Mariana Bustamante, Vikas Gupta, Carl-Johan Carlhäll, Tino Ebbers   +3 more
doaj   +1 more source

Multiresolution spatiotemporal mechanical model of the heart as a prior to constrain the solution for 4D models of the heart. [PDF]

, 2019
In several nuclear cardiac imaging applications (SPECT and PET), images are formed by reconstructing tomographic data using an iterative reconstruction algorithm with corrections for physical factors involved in the imaging detection process and with ...
Gullberg, Grant T, Liu, Jing, Ordovas, Karen, Segars, W Paul, Seo, Youngho, Shrestha, Uttam M, Veress, Alexander I   +6 more
core   +2 more sources

Cardiac cycle modulates social pain

Biological Psychology
Social pain is a painful feeling evoked by social rejection, exclusion, or the loss of other important people. Previous research suggests that physical pain is reduced by increased signals from baroreceptors that monitor blood pressure. This pre-registered study investigated whether social pain is attenuated by increased baroafferent signals, as ...
Tsubasa, Izaki, Toshiyuki, Himichi, Michiko, Sakaki   +2 more
openaire   +3 more sources

Morphometric Parameters, Contractility and Architecture of the Left Ventricle Myocardium in Pigs [PDF]

International Journal of Biomedicine, 2012
This study aims to reveal the interrelations found within the architecture of the muscular fibers, the morphometric parameters and contractility of the left ventricular myocardium in the Landrace breed of conventional pigs.
Mikhail P. Roshchevsky, PhD, ScD, Irina M. Roshchevskaya, Anna S. Gulyaeva, PhD, Elena V. Bartusevich, PhD   +3 more
doaj  

A pseudo active kinematic constraint for a biological living soft tissue: an effect of the collagen network [PDF]

, 2008
Recent studies in mammalian hearts show that left ventricular wall thickening is an important mechanism for systolic ejection and that during contraction the cardiac muscle develops significant stresses in the muscular cross-fiber direction. We suggested
Bourdarias, Christian, Gerbi, Stéphane, Ohayon, Jacques   +2 more
core   +4 more sources

Never in mitosis gene A related kinase-6 attenuates pressure overload-induced activation of the protein kinase B pathway and cardiac hypertrophy.

PLoS ONE, 2014
Cardiac hypertrophy appears to be a specialized form of cellular growth that involves the proliferation control and cell cycle regulation. NIMA (never in mitosis, gene A)-related kinase-6 (Nek6) is a cell cycle regulatory gene that could induce centriole
Zhouyan Bian, Haihan Liao, Yan Zhang, Qingqing Wu, Heng Zhou, Zheng Yang, Jinrong Fu, Teng Wang, Ling Yan, Difei Shen, Hongliang Li, Qizhu Tang   +11 more
doaj   +1 more source

Assessment of Left Atrial Deformation and Function by 2-Dimensional Speckle Tracking Echocardiography in Healthy Dogs and Dogs With Myxomatous Mitral Valve Disease [PDF]

, 2017
open7noBackground: The assessment of left atrial (LA) function by 2-dimensional speckle tracking echocardiography (STE) holds important clinical implications in human medicine. Few similar data are available in dogs.
Baron Toaldo, M., Cipone, M., Contiero, B., Diana, A., Guglielmini, C., Pelle, N. G., Romito, G.   +6 more
core   +2 more sources

MDCT evaluation of aortic root and aortic valve prior to TAVI. What is the optimal imaging time point in the cardiac cycle?

European Radiology, 2015
ObjectivesTo determine the optimal imaging time point for transcatheter aortic valve implantation (TAVI) therapy planning by comprehensive evaluation of the aortic root.MethodsMultidetector-row CT (MDCT) examination with retrospective ECG gating was ...
Tomáš Juřenčák, J. Turek, B. Kietselaer, Casper Mihl, M. Kok, V. V. van Ommen, L. van Garsse, E. Nijssen, J. Wildberger, M. Das   +9 more
semanticscholar   +1 more source

Quantification of myocardial blood flow with cardiovascular magnetic resonance throughout the cardiac cycle

Journal of Cardiovascular Magnetic Resonance, 2015
BackgroundMyocardial blood flow (MBF) varies throughout the cardiac cycle in response to phasic changes in myocardial tension. The aim of this study was to determine if quantitative myocardial perfusion imaging with cardiovascular magnetic resonance (CMR)
M. Motwani, A. Kidambi, A. Uddin, S. Sourbron, J. Greenwood, S. Plein   +5 more
semanticscholar   +1 more source

Tricuspid annulus: A spatial and temporal analysis

Annals of Cardiac Anaesthesia, 2016
Background: Traditional two-dimensional (2D) echocardiographic evaluation of tricuspid annulus (TA) dilation is based on single-frame measurements of the septolateral (S-L) dimension.
Ziyad O Knio, Mario Montealegre-Gallegos, Lu Yeh, Bilal Chaudary, Jelliffe Jeganathan, Robina Matyal, Kamal R Khabbaz, David C Liu, Venkatachalam Senthilnathan, Feroze Mahmood   +9 more
doaj   +1 more source