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133132 - Compound ex vivo and in silico method for hemodynamic analysis of stented arteries.PDF (11.18 MB)

Compound ex vivo and in silico method for hemodynamic analysis of stented arteries

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posted on 2023-05-20, 04:14 authored by Rikhtegar, F, Pacheco, F, Wyss, C, Kathryn Stok, Ge, H, Choo, RJ, Ferrari, A, Poulikakos, D, Muller, R, Kurtcuoglu, V
Hemodynamic factors such as low wall shear stress have been shown to influence endothelial healing and atherogenesis in stent-free vessels. However, in stented vessels, a reliable quantitative analysis of such relations has not been possible due to the lack of a suitable method for the accurate acquisition of blood flow. The objective of this work was to develop a method for the precise reconstruction of hemodynamics and quantification of wall shear stress in stented vessels. We have developed such a method that can be applied to vessels stented in or ex vivo and processed ex vivo. Here we stented the coronary arteries of ex vivo porcine hearts, performed vascular corrosion casting, acquired the vessel geometry using micro-computed tomography and reconstructed blood flow and shear stress using computational fluid dynamics. The method yields accurate local flow information through anatomic fidelity, capturing in detail the stent geometry, arterial tissue prolapse, radial and axial arterial deformation as well as strut malapposition. This novel compound method may serve as a unique tool for spatially resolved analysis of the relationship between hemodynamic factors and vascular biology. It can further be employed to optimize stent design and stenting strategies.

History

Publication title

PLoS ONE

Volume

8

Pagination

e58147

ISSN

1932-6203

Department/School

Menzies Institute for Medical Research

Publisher

Public Library of Science

Place of publication

United States

Rights statement

Copyright 2013 Rikhtegar et al. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

Repository Status

  • Open

Socio-economic Objectives

Expanding knowledge in engineering

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