Results 1 to 10 of about 110,042 (374)

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

International 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 ...
L. D. de Heer, R. Budde, W. Mali, A. M. de Vos, L. V. van Herwerden, J. Kluin   +5 more
semanticscholar   +4 more sources

Right ventricular to left ventricular diameter ratio at end-systole in evaluating outcomes in children with pulmonary hypertension. [PDF]

Journal of the American Society of Echocardiography, 2014
P. Jone, J. Hinzman, B. Wagner, D. Ivy, A. Younoszai   +4 more
semanticscholar   +4 more sources

MDCT evaluation of dynamic changes in aortic root parameters during the cardiac cycle in patients with aortic regurgitation [PDF]

Scientific Reports
Objectives: To investigate the dynamic changes in multiple planes and parameters of the aortic root region at different phases of the cardiac cycle in patients with aortic regurgitation (AR) using multi-detector row computed tomography (MDCT). To provide
Shuai Zhang, Ting Huang, Yun Lu, Xi Guo, Quanliang Shang   +4 more
doaj   +2 more sources

Duration of Systole and Diastole for Hydrodynamic Testing of Prosthetic Heart Valves: Comparison Between ISO 5840 Standards and in vivo Studies

Brazilian 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, J. Ortiz
semanticscholar   +2 more sources

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

Journal 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
C. Mekkaoui, S. Nielles-Vallespin, P. Gatehouse, M. Jackowski, D. Firmin, D. Sosnovik   +5 more
semanticscholar   +2 more sources

Fiber Orientation in the Canine Left Ventricle during Diastole and Systole

Circulation Research, 1969
D. D. Streeter, H. M. Spotnitz, Dali P. Patel, J. Ross, E. Sonnenblick   +4 more
semanticscholar   +2 more sources

Measuring Left Ventricular Volumes in Two-Dimensional Echocardiography Image Sequence Using Level-set Method for Automatic Detection of End-Diastole and End-systole Frames

Research in Cardiovascular Medicine, 2012
Background: Identifying End-Diastole (ED) and End-Systole (ES) frames is highly important in the process of evaluating cardiac function and measuring global parameters accurately, such as Ejection Fraction (EF), Cardiac Output (CO) and Stroke Volume ...
S. Darvishi, H. Behnam, M. Pouladian, N. Samiei   +3 more
semanticscholar   +2 more sources

THE SIMPLE SEPARATING SYSTOLE FOR HYPERBOLIC SURFACES OF LARGE GENUS [PDF]

Journal of the Institute of Mathematics of Jussieu, 2020
In this note we show that the expected value of the separating systole of a random surface of genus g with respect to Weil–Petersson volume behaves like $2\log g $ as the genus goes to infinity.
H. Parlier, Yunhui Wu, Yuhao Xue
semanticscholar   +1 more source

Systole: A python package for cardiac signal synchrony and analysis

Journal of Open Source Software, 2022
Systole is a package for cardiac signal analysis in Python. It provides an interface for recording cardiac signals via electrocardiography (ECG) or photoplethysmography (PPG), as well as both online and offline data analysis methods extracting cardiac ...
Nicolas Legrand, M. Allen
semanticscholar   +1 more source

Diastolic heart failure: boundaries of term application

Бюллетень сибирской медицины, 2023
Important changes regarding the understanding of the pathogenesis of chronic heart failure (CHF) marked the beginning of the millennium, and its first decade was called the decade of diastology.
V. V. Kalyuzhin, A. T. Teplyakov, I. D. Bespalova, E. V. Kalyuzhina, G. E. Chernogoryuk, N. N. Terentyeva, E. V. Grakova, K. V. Kopeva, V. Yu. Usov, N. P. Garganeeva, O. A. Pavlenko, Yu. V. Gorelova   +11 more
doaj   +1 more source