Results 41 to 50 of about 1,347,814 (421)
Eye and Vision, 2019 Background Non-arteritic anterior ischemic optic neuropathy (NAION) is the most common cause of acute optic neuropathy in patients over 50 years of age, and many affected individuals are left with permanent visual deficits. Despite the frequency of NAION
Amanda D. Henderson +2 more
doaj +1 more source
International Journal of Cardiology: Heart & Vasculature, 2014 Objectives: The main objective of this study was to assess the blood flow rate and velocity in coronary artery stenosis using intracoronary frequency domain optical coherence tomography (FD-OCT). A correlation between fractional flow reserve (FFR) and FD-
Haroon Zafar +2 more
doaj +1 more source
Annals of Surgery, 2012 Objective: We compared the effects of intravenous infusions of 0.9% saline ([Cl−] 154 mmol/L) and Plasma-Lyte 148 ([Cl−] 98 mmol/L, Baxter Healthcare) on renal blood flow velocity and perfusion in humans using magnetic resonance imaging (MRI). Background:
A. Chowdhury +3 more
semanticscholar +1 more source
Aerobic exercise training increases cerebral blood flow in postmenopausal women
Artery Research, 2012 Background: Age-related decrease in cerebral blood flow is a risk factor for cognitive decline. Aerobic exercise training improves vascular and cognitive functions.
Nobuhiko Akazawa +5 more
doaj +1 more source
Deformable Registration of MRA Images with 4D Flow Images to Facilitate Accurate Estimation of Flow Properties within Blood Vessels [PDF]
arXiv, 2023 Patients with congenital and acquired heart conditions often undergo studies using Magnetic Resonance Angiography (MRA) images and time-resolved four-dimensional phase-contrast magnetic resonance (4D Flow) images to noninvasively estimate blood flow properties such as flux, wall shear stress and vorticity.
arxiv
Biomedical Optics Express, 2013 The split-spectrum amplitude-decorrelation angiography (SSADA) algorithm was recently developed as a method for imaging blood flow in the human retina without the use of phase information.
J. Tokayer +3 more
semanticscholar +1 more source
Evaluation of arterial digital blood flow using Doppler ultrasonography in healthy dairy cows
BMC Veterinary Research, 2017 Background Local circulatory disturbances have been implicated in the development of foot disorders in cattle. The goals of this study were to evaluate the suitability of the interdigital artery in the pastern region in both hind limbs using pulsed-wave (
H. Müller +5 more
doaj +1 more source
Acta Clinica Croatica, 2020 The aim of the study was to investigate if preoperative blood flow velocity in femoral vein in different positions of the hip during total hip arthroplasty (THA) is a predictor of postoperative deep vein thrombosis (DVT).
Amel Hadžimehmedagić +5 more
doaj +1 more source
Photoacoustic vector tomography for deep hemodynamic imaging [PDF]
arXiv, 2022 Non-invasive imaging of deep blood vessels for mapping hemodynamics remains an open quest in biomedical optical imaging. Although pure optical imaging techniques offer rich optical contrast of blood and have been reported to measure blood flow, they are generally limited to surface imaging within the optical diffusion limit of about one millimeter ...
arxiv
Inert gas clearance from tissue by co-currently and counter-currently arranged microvessels [PDF]
, 2012 To elucidate the clearance of dissolved inert gas from tissues, we have developed numerical models of gas transport in a cylindrical block of tissue supplied by one or two capillaries. With two capillaries, attention is given to the effects of co-current
Bailey HR +15 more
core +2 more sources