Resumo

AYALA, D. S  e  MADERO, D. A. Analysis of the effect of stent porosity and shape on saccular intracranial aneurysm using the Lattice Boltzmann method. ing.cienc. [online]. 2013, vol.9, n.18, pp.33-59. ISSN 1794-9165.

This article presents an analysis of blood flow patterns in intracranial saccular aneurysm and the effects of the shape and porosity of the stents used in endovascular treatments. In this study will be used the flow reduction criteria for characterizing the efficiency of the stent. The hemodynamic properties of a newtonian blood flow into the aneurysm will be evaluated using the Lattice Boltzmann method (LBM). Porosity values and stent forms are proposed for analysis. In all stent cases analyzed is observed a reduction of velocity and pressure and an increase in viscosity. It is further noted that the rectangular contour stent is the optimal case and reduces the magnitude of the flow velocity inside the aneurysm much as 76%. The results help to understand the role of porosity in the form and design of a stent.

Palavras-chave : saccular intracranial aneurysm; stent; lattice boltzmann method.

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