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Experiments in Fluids

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01-06-2021 | Research Article

A novel technique towards investigating wall shear stress within the stent struts using particle image velocimetry

Authors: Navid Freidoonimehr, Maziar Arjomandi, Anthony Zander, Rey Chin

Published in: Experiments in Fluids | Issue 6/2021

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Abstract

Understanding the effects of a stent design on the flow behaviour especially near the artery wall can lead to choosing or designing more haemodynamically compatible stents that can reduce the chances of restenosis inside the stented arteries. In this study, a novel technique is presented for the visualisation of the entire flow and the investigation of wall shear stress (WSS) within the stent struts without covering the field of view (FOV) inside a stented coronary artery model using particle image velocimetry. This novel technique is based on the construction of a transparent stented artery using silicone casted in one piece, instead of inserting a metal or non-metallic stent inside a casted artery model, which are translucent and distort the FOV. The effect of the stent pattern on the WSS and oscillatory shear index of a coronary artery is investigated for the models of four stents to identify the locations with the high chances of restenosis. The developed technique will help to improve the stent designs to achieve better patient outcome.

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Title: A novel technique towards investigating wall shear stress within the stent struts using particle image velocimetry
Authors: Navid Freidoonimehr
Maziar Arjomandi
Anthony Zander
Rey Chin
Publication date: 01-06-2021
Publisher: Springer Berlin Heidelberg
Published in: Experiments in Fluids / Issue 6/2021
Print ISSN: 0723-4864
Electronic ISSN: 1432-1114
DOI: https://doi.org/10.1007/s00348-021-03230-7

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