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Numerical simulation of the fractional flow reserve (FFR)

Abstract : The fractional ow reserve (FFR) provides an efficient quantitative assessment of the severity of a coronary lesion. Our aim is to address the problem of computing non-invasive virtual fractional ow reserve (VFFR). In this paper, we present a preliminary study of the main features of ow over a stenosed coronary arterial portion, in order to enumerate the different factors affecting the VFFR. We adopt a non-Newtonian ow model and we assume that the two-dimensional (2D) domain is rigid in a first place. In a second place, we consider a simplified weakly coupled FSI model in order to take into account the infinitesimal displacements of the upper wall. A 2D finite element solver was implemented using Freefem++. We computed the VFFR profiles with respect to different lesion parameters and compared the results given by the rigid wall model to those obtained for the elastic wall one.
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Contributor : Abderrahmane Habbal <>
Submitted on : Tuesday, December 4, 2018 - 5:14:15 PM
Last modification on : Tuesday, May 26, 2020 - 6:50:52 PM

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  • HAL Id : hal-01944566, version 1

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Keltoum Chahour, Rajae Aboulaich, Abderrahmane Habbal, Cherif Abdelkhirane, Nejib Zemzemi. Numerical simulation of the fractional flow reserve (FFR). Mathematical Modelling of Natural Phenomena, EDP Sciences, In press, Special issue "Mathematical Modelling in Cardiology". ⟨hal-01944566⟩

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