Results 201 to 210 of about 2,011,937 (232)

Pulmonary arterial wave intensity analysis in health and disease.

2023
Wave intensity analysis (WIA) is a time-domain technique utilising high fidelity pressure and velocity measurements to determine the intensity, direction, type and timing of waves that may simultaneously exist. Travelling wavefronts represent elemental units of energy transmitted within and between the heart and blood vessels.
openaire   +1 more source

Forward and backward waves in the arterial system: impedance or wave intensity analysis?

Medical & Biological Engineering & Computing, 2009
Both impedance analysis and wave intensity analysis are used to separate measured pressure and flow waveforms into their forward and backward components. The separation is sensitive to the characteristic impedance or wave speed determined from the data. In all other aspects, the results are identical.
A D, Hughes, K H, Parker
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Imaging-Based Wave Intensity Analysis: Applications in Congenital Heart Disease

Volume 1A: Abdominal Aortic Aneurysms; Active and Reactive Soft Matter; Atherosclerosis; BioFluid Mechanics; Education; Biotransport Phenomena; Bone, Joint and Spine Mechanics; Brain Injury; Cardiac Mechanics; Cardiovascular Devices, Fluids and Imaging; Cartilage and Disc Mechanics; Cell and Tissue Engineering; Cerebral Aneurysms; Computational Biofluid Dynamics; Device Design, Human Dynamics, and Rehabilitation; Drug Delivery and Disease Treatment; Engineered Cellular Environments, 2013
Wave intensity analysis is a hemodynamic index evaluating the working condition of the heart in relation to the rest of the vasculature [1]. As such it carries valuable mechanistic information on ventriculo-arterial (VA) coupling. Its applications have ranged from studies of cardiac assist devices to fetal studies.
Giovanni Biglino, Hopewell N. Ntsinjana, Kim H. Parker, Silvia Schievano, Andrew M. Taylor   +4 more
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Simulation and Wave Intensity Analysis of Intra-aortic Counterpulsation

2015
This work aims at developing a system dynamic model that can simulate various hemodynamic and wave characteristics associated with the counter-pulsation circulation support. A novel hybrid circulation model consisting of a one-dimensional (1-D) flow model and a lumped parameter Windkessel model was constructed.
Bo-Wen Lin, Pong-Jeu Lu
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WAVE INTENSITY ANALYSIS

Journal of Hypertension, 2000
A. Zambanini, S. L. Cunningham, B. Ariff, K. H. Parker, S. A. McG. Thom, A. D. Hughes   +5 more
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Wave intensity analysis of maternal arterial stiffness: augmentation index and pulse wave velocity in pregnancies complicated by diabetes or hypertension

Archives of Gynecology and Obstetrics, 2020
K. O. Murcia, U. Möllmann, C. Opitz, H. Köster, M. Möllers, K. Hammer, M. Falkenberg, J. Steinhard, W. Klockenbusch, R. Schmitz   +9 more
semanticscholar   +1 more source

Effect of Warm-Up Exercise Studied with Wave Intensity Analysis

2011
The effect of warm-up on myocardial perfusion in patients with coronary artery disease (CAD) is not well understood. Coronary wave intensity reflects the effects of cardiac contraction and relaxation on coronary blood flow dynamics. It can distinguish between left ventricular (forward, FW) and microcirculatory (backward, BW) originating contributions ...
Rolandi, M. C., Lockie, T., Guilcher, A., Perera, D., Redwood, S., Marber, M., Siebes, M.   +6 more
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Physical units to report intensity of electromagnetic wave

Environmental Research, 2022
Raquel Ramirez-Vazquez, Isabel Escobar, Enrique Arribas   +2 more
exaly  

Pulmonary artery wave intensity analysis following lung resection

Journal of Cardiothoracic and Vascular Anesthesia, 2017
Adam Glass, P McCall, A Arthur, J Kinsella, B Shelley   +4 more
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Coronary haemodynamics in humans using wave intensity analysis

Journal of Biomechanics, 2006
J. Aguado-Sierra, J.E. Davies, D.P. Francis, Z.I. Whinnett, C.H. Manisty, K. Willson, R.A. Foale, I.S. Malik, A.D. Hughes, J. Mayet, K.H. Parker   +10 more
openaire   +1 more source