Search Results - "Griffith, T.M"

Magnetic resonance image processing and structured grid generation of a human abdominal bifurcation by Long, Q., Xu, X.Y., Collins, M.W., Bourne, M., Griffith, T.M.

“…Magnetic resonance angiography (MRA) offers a non-invasive approach to the acquisition of anatomically accurate human arterial structure. Combining the latest…”
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A comparison of basal and agonist‐stimulated release of endothelium‐derived relaxing factor from different arteries by Christie, M.I., Griffith, T.M., Lewis, M.J.

“…1 The release of endothelium‐derived relaxing factor (EDRF) from rabbit aorta and pig coronary artery vessels in response to acetylcholine (ACh), substance P…”
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Shade tolerance plasticity in response to neutral vs green shade cues in Polygonum species of contrasting ecological breadth by Griffith, Timothy M., Sultan, Sonia E.

“…•Here we examined species differences in perception and response to two distinct types of shade cue, reduced photosynthetically active radiation (PAR) with and…”
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Dynamics of A Three-Variable Nonlinear Model of Vasomotion: Comparison of Theory and Experiment by Parthimos, D., Haddock, R.E., Hill, C.E., Griffith, T.M.

“…The effects of pharmacological interventions that modulate Ca 2+ homeodynamics and membrane potential in rat isolated cerebral vessels during vasomotion (i.e.,…”
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Numerical study of blood flow in an anatomically realistic aorto-iliac bifurcation generated from MRI data by Long, Q., Xu, X.Y., Bourne, M., Griffith, T.M.

“…Magnetic resonance imaging and computational fluid dynamics (CFD) have been used in combination to simulate flow patterns at the human aorto‐iliac bifurcation…”
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Cyclic AMP Mediates EDHF-Type Relaxations of Rabbit Jugular Vein by Griffith, T.M., Taylor, H.J.

“…Isolated rings of rabbit jugular vein have been used to test the hypothesis that formation of cAMP within the endothelial cell contributes to relaxations that…”
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Fractal dimensions of laser doppler flowmetry time series by Carolan-Rees, G, Tweddel, A.C, Naka, K.K, Griffith, T.M

“…Laser Doppler flowmetry (LDF) provides a non-invasive method of assessing cutaneous perfusion. As the microvasculature under the probe is not defined the…”
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Forecasting chaotic cardiovascular time series with an adaptive slope multilayer perceptron neural network by Stamatis, N., Parthimos, D., Griffith, T.M.

“…A multilayer perceptron (MLP) network architecture has been formulated in which two adaptive parameters, the scaling and translation of the postsynaptic…”
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Comparison of chaotic and sinusoidal vasomotion in the regulation of microvascular flow by Parthimos, D., Edwards, D.H., Griffith, T.M.

“…Objective: In order to elucidate the physiological consequences of irregular vasomotion on microvascular flow we have compared the theoretical hydrodynamic…”
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Temporal chaos in the microcirculation by Griffith, T.M.

“…In vivo, spontaneous rhythmic contraction and dilatation of the vessel wall and the nonlinear rheological properties of blood both contribute to irregular…”
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Ionic mechanisms contributing to the vasorelaxant properties of iodinated radiographic contrast media by Pitman, M.R., Karlsson, J.O.G., Griffith, T.M.

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Ionic mechanisms contributing to the vasorelaxant properties of iodinated contrast media: a comparison of iohexol and iodixanol in the rabbit isolated aorta by Pitman, M.R., Karlsson, J.O.G., Griffith, T.M.

“…1 We have used rings of rabbit thoracic aorta to investigate the vasorelaxant properties of two different classes of non‐ionic iodinated radiographic contrast…”
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Fluid dynamics of the aortic bifurcation using magnetic resonance imaging and computational fluid dynamics by Long, Q., Xu, X.Y., Collins, M.W., Griffith, T.M., Bourne, M.

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Wall shear stress and its relationship to endothelium-derived relaxing factor by Xu, X.Y., Collins, M.W., Griffith, T.M., Sarti, A.

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Nitric oxide activity in patients undergoing cardiopulmonary bypass by Mathie, R.T., Ohri, S.K., Keogh, B.E., Williams, J., Siney, L., Griffith, T.M.

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Basal EDRF activity helps to keep the geometrical configuration of arterial bifurcations close to the Murray optimum by Griffith, T M, Edwards, D H

“…We have used X-ray microangiography to investigate the hypothesis that the potent endogenous vasodilator endothelium-derived relaxing factor (EDRF) contributes…”
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Prediction of arterial "burst" activity and transitions between chaotic attractors with a multilayer perceptron optimized by a new stopping criterion by Stamatis, N, Parthimos, D, Griffith, T M

“…We have explored the potential of an artificial neural network to capture the dynamics of chaotic temporal fluctuations in arterial pressure and flow. Model…”
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Impaired cyclic nucleotide‐mediated vasorelaxation may contribute to closure of the human umbilical artery after birth by Renowden, S., Edwards, D.H., Griffith, T.M.

“…1 The mechanical and biochemical effects of agents that relax vascular smooth muscle either through elevation of guanosine 3′:5′‐cyclic monophosphate (cyclic…”
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Mechanisms underlying chaotic vasomotion in isolated resistance arteries: roles of calcium and EDRF by Griffith, T M, Edwards, D H

“…Nonlinear mathematical techniques now make it possible to quantify the complexity of an irregular time series through calculation of a parameter known as…”
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Endothelium‐derived relaxing factor (EDRF) and resistance vessels in an intact vascular bed: a microangiographic study of the rabbit isolated ear by Griffith, T.M, Edwards, D.H., Davies, R. Ll, Harrison, T.J., Evans, K.T.

“…1 Microradiographic techniques have been used to show that endothelium‐derived relaxing factor (EDRF), which is believed to be nitric oxide, influences…”
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