The effects of post-stenotic dilatations on the flow of a blood analogue through stenosed coronary arteries

Pincombe, Brandon; Mazumdar, J.

doi:10.1016/s0895-7177(97)00039-3

Cited by 46 publications

(25 citation statements)

References 9 publications

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“…The results indicated that the stenosed side of the wall had much higher shear stress when compared to the healthy side of the wall. Pincombe and Mazumdar [7] studied the effects of post stenotic dilations in stenosed arteries. Using the Bingham model, the resistance to blood flow increased as the stenosis severity increased, and decreased as the dilation increased.…”

Section: Introductionmentioning

confidence: 99%

Blood flow in stenosed arteries using two way, fluid-structural interaction

Chen¹,

Ding²,

Gear³

2010

ANZIAMJ

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Blood flow in a stenosed artery was simulated using the two way, fluid-structural interactions in ansys-a commercial finite element and finite volume software widely used in industry. Several stenosis models were investigated using a pulsatile flow condition. In these models the form of the stenosis geometry was either axisymmetric or axisasymmetric. The blood was modelled both as a non-Newtonian, power law fluid, and as the Casson model. The artery tissue was assumed to be a linear elastic material for the axis-symmetric stenosis model and nonlinear material for the axis-asymmetric stenosis models. A fibrous cap and lipid pool were also added into the stenosis geometry of the axis-asymmetric models to account for complexities of the physiology. The effect of the stenosis severity on arteries was investigated by examining the blood flow velocity, pressure and wall shear stress at multiple locations.

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Section: Introductionmentioning

confidence: 99%

Blood flow in stenosed arteries using two way, fluid-structural interaction

Chen¹,

Ding²,

Gear³

2010

ANZIAMJ

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“…Solution of the approximate equations governing steady flow through stenosed arteries can be achieved [8]. Various other studies examined detailed treatment of non-Newtonian models of blood flow through rigid and elastic walled arteries [12,13,14,16]. The non-Newtonian properties of blood are appropriate for the use of the Power law, Herschel-Bulkey, Casson, and Bingham models [19].…”

Section: Mathematical Models Of Blood Flowmentioning

confidence: 99%

“…Pincombe and Mazumdar analysed axial flow through atherosclerotic arteries using numerical and analytical models [12,13,14,15,17,16]. Dependent flow variables of interest are the reduction in flow ratio and the wall shear stress ratio.…”

Section: Mechanics Of Flow Through Artery With Axially Varying Wallmentioning

confidence: 99%

“…Analytical [12,13,14,16,22] and computational [4,11,1] approaches can be used for arterial flow modelling. Analytical models are best suited to exploring the underlying physics of the situation and producing real time results for simpler situations.…”

Section: Introductionmentioning

confidence: 99%

“…We assume non-Newtonian blood rheology as the basis of this analytical model. The concept of flow resistance to quantify the severity of stenosis due to atherosclerosis is not new and has been previously studied [12,13,14,16]. Clinically, surgeons and physicians define the degree C69 of atherosclerosis by measuring percent reduction of the vessel lumen due to accumulation of atherosclerotic plaque [23,24,25].…”

Section: Introductionmentioning

confidence: 99%

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Modelling of blood flow resistance for an atherosclerotic artery with multiple stenoses and poststenotic dilatations

Wong¹,

Tu²,

Mazumdar³

et al. 2010

ANZIAMJ

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Mathematical modelling of blood flow through an artery with multiple stenoses and poststenotic dilatations is surveyed in this paper. A set of equations describes the resistance to flow ratio of an artery. Analytic solutions are based on homogenous and irrotational flow through mathematically constructed vessels. Variations in resistance to flow ratio are subjected to alterations in flow behaviour index, structural variations in relation to magnitude of vessel stenosis and multiple abnormal segments. Our analytical framework examines the effects that variability in arterial wall geometry have on the blood flow resistance. The results may aid the angiographic assessment of occlusion due to lesion development in atherosclerotic coronary arteries.

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Techniques in the Study of Blood Flow through both Constrictions and Post-Stenotic Dilatations in Arteries

Leondes¹

2003

Computational Methods in Biophysics, Biomaterials, Biotechnology and Medical Systems

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The effects of post-stenotic dilatations on the flow of a blood analogue through stenosed coronary arteries

Cited by 46 publications

References 9 publications

Blood flow in stenosed arteries using two way, fluid-structural interaction

Blood flow in stenosed arteries using two way, fluid-structural interaction

Modelling of blood flow resistance for an atherosclerotic artery with multiple stenoses and poststenotic dilatations

Techniques in the Study of Blood Flow through both Constrictions and Post-Stenotic Dilatations in Arteries

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