Results 21 to 30 of about 1,197,781 (393)

Fractal Rigidity in Migraine [PDF]

open access: yes, 2003
We study the middle cerebral artery blood flow velocity (MCAfv) in humans using transcranial Doppler ultrasonography (TCD). Scaling properties of time series of the axial flow velocity averaged over a cardiac beat interval may be characterized by two ...
Glaubic-Latka, Marta   +3 more
core   +2 more sources

Quantitative blood flow velocity imaging using laser speckle flowmetry

open access: yesScientific Reports, 2016
Laser speckle flowmetry suffers from a debated quantification of the inverse relation between decorrelation time (τc) and blood flow velocity (V), i.e. 1/τc = αV.
A. Nadort   +3 more
semanticscholar   +1 more source

Large-Eddy simulation of pulsatile blood flow [PDF]

open access: yes, 2009
Large-Eddy simulation (LES) is performed to study pulsatile blood flow through a 3D model of arterial stenosis. The model is chosen as a simple channel with a biological type stenosis formed on the top wall.
Despande   +22 more
core   +1 more source

Effect of Electrical Stimulation on Blood Flow Velocity and Vessel Size

open access: yesOpen Medicine, 2017
Interferential current electrical stimulation alters blood flow velocity and vessel size. We aimed to investigate the changes in the autonomic nervous system depending on electrical stimulation parameters.
Hee-Kyung Jin   +2 more
semanticscholar   +1 more source

Using 320-slice perfusion computed tomography in visuali zation of prostate cancer

open access: yesУчёные записки Санкт-Петербургского государственного медицинского университета им. Акад. И.П. Павлова, 2016
Visualization of prostate cancer remains an actual problem in urology and oncology. Purpose of the study – evaluation of prostate cancer visualization using 320-slice perfusion computed tomography (PCT). PCT results of 15 patients with suspected prostate
N. V. Sosnowski   +4 more
doaj   +1 more source

Effect of blood's velocity on blood resistivity [PDF]

open access: yes, 1998
Blood resistivity is an important quantity whose value influences the results of various methods used in the study of heart and circulation. In this paper, the relationship between blood resistivity and velocity of blood flow was evaluated and analyzed ...
Ng, SL, Tjin, SC, Xie, T, Yang, QP
core   +1 more source

Impaired endothelial function of the retinal vasculature in hypertensive patients [PDF]

open access: yes, 2004
<p><b>Background and Purpose:</b> Arterial hypertension constitutes a central factor in the pathogenesis of stroke. We examined endothelial function of the retinal vasculature as a model of the cerebral circulation.</p> <p ...
Delles, C.   +5 more
core   +1 more source

Cerebral blood flow velocity is associated with endothelial function in men [PDF]

open access: yesJournal of Men's Health, 2021
Background and objective: Reduction in cerebral blood flow with aging leads to cognitive decline and brain atrophy. Cerebrovascular hemodynamics are associated with vascular function.
Nobuhiko Akazawa   +5 more
doaj   +1 more source

Calibration-free in vivo transverse blood flowmetry based on cross correlation of slow time profiles from photoacoustic microscopy [PDF]

open access: yes, 2013
We propose a cross-correlation-based method to measure blood-flow velocity by using photoacoustic microscopy. Unlike in previous autocorrelation-based methods, the measured flow velocity here is independent of particle size.
Liang, Jinyang   +3 more
core   +2 more sources

EFFICACY OF LASER PULSE FREQUENCIES ON BLOOD FLOW IN TYPE 2 DIABETIC PATIENTS

open access: yesInternational Journal of Physiotherapy, 2017
Background: Research reports had noted an apparent increase in cutaneous and deep blood flow as a result of low-intensity laser therapy (LLLT) in normal subjects.
Amir Nazih Wadee
doaj   +1 more source

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