Results 181 to 190 of about 2,011,937 (232)

Efficacy of low-intensity extracorporeal shock wave therapy for erectile dysfunction: updated meta-analysis of randomized trials

open access: gold
Kaneez Fatima   +8 more
openalex   +1 more source

"Direct" measurement of delocalized molecular excitonic wave functions through excitonic and vibronic photon imaging. [PDF]

open access: yesSci Adv
Luo Y   +9 more
europepmc   +1 more source

Coronary Wave Enhancement for Robust Wave Intensity Analysis

2018 International Conference on Applied Electromagnetics, Signal Processing and Communication (AESPC), 2018
Analysis of coronary wave intensity is a hemodynamic index that can exhibit the arterial system and working condition of heart. Apart from electrocardiogram (ECG) research it is a new direction of cardiac disease analysis in non-invasive way.
Swapnil Mishra   +2 more
semanticscholar   +2 more sources

Wave Intensity Analysis

Snapshots of Hemodynamics, 2018
Originally Wave Intensity was defined as the product of differences in pressure, dP=P(t + Δt)–P(t) and velocity, dv = v(t + Δt)–v(t), as dP·dv. This implies that their product, dP·dv is in Watt·m−2, and depends on the sampling time, Δt, which makes quantitative comparison between studies, when Δt is not reported, difficult.
N. Westerhof   +3 more
semanticscholar   +2 more sources

An introduction to wave intensity analysis

Medical & Biological Engineering & Computing, 2009
Wave intensity analysis applies methods first used to study gas dynamics to cardiovascular haemodynamics. It is based on the method of characteristics solution of the 1-D equations derived from the conservation of mass and momentum in elastic vessels.
Kim H Parker
openaire   +4 more sources

Patients with Fontan circulation have abnormal aortic wave propagation patterns: A wave intensity analysis study.

International Journal of Cardiology, 2020
BACKGROUND Elevated systemic afterload in patients with Fontan circulation may lead to impaired single ventricular function. Wave intensity analysis (WIA) enables evaluation of compression and expansion waves traveling through vasculature.
M. Schäfer   +13 more
semanticscholar   +3 more sources

Milrinone Acts as a Vasodilator But Not an Inotrope in Children After Cardiac Surgery—Insights From Wave Intensity Analysis

Critical Care Medicine, 2020
Objectives: Milrinone is an inodilator widely used in the postoperative management of children undergoing cardiac surgery. The literature supporting its inotropic effect is sparse.
S. Rahiman   +8 more
semanticscholar   +1 more source

“Wave” as defined by wave intensity analysis

Medical & Biological Engineering & Computing, 2008
The propagation of waves in the arteries is generally described using Fourier analysis in terms of periodic wavetrains formed by the superposition of a mean value and sinusoidal waves at the fundamental frequency (defined by the heart rate) and its harmonics.
Jiun-Jr, Wang   +3 more
openaire   +2 more sources

Wave intensity wall analysis: a novel noninvasive method to measure wave intensity

Heart and Vessels, 2009
Wave intensity analysis is a concept providing information about the interaction of the heart and the vascular system. Originally, the technique was invasive. Since then new noninvasive methods have been developed. A recently developed ultrasound technique to estimate tissue motion and deformation is speckle-tracking echocardiography.
Matilda, Larsson   +6 more
openaire   +2 more sources

Brief commentary on coronary wave-intensity analysis

Journal of Applied Physiology, 2000
coronary pressure-flow relations have long interested physiologists but are so complex that even today they have still not been completely unraveled. Early investigators like Rebatel in 1872 (Ref.
J I, Hoffman, W M, Chilian
openaire   +2 more sources

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