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Effect of different stent configurations using Lattice Boltzmann method and particles image velocimetry on artery bifurcation aneurysm problem.

Authors
  • Mokhtar, N Hafizah1
  • Abas, Aizat2
  • Razak, N A3
  • Hamid, Muhammad Najib Abdul4
  • Teong, Soon Lay1
  • 1 School of Mechanical Engineering, Universiti Sains Malaysia, Engineering Campus, Nibong Tebal, Penang 14300, Malaysia. , (Malaysia)
  • 2 School of Mechanical Engineering, Universiti Sains Malaysia, Engineering Campus, Nibong Tebal, Penang 14300, Malaysia. Electronic address: [email protected] , (Malaysia)
  • 3 School of Aerospace Engineering, Universiti Sains Malaysia, Engineering Campus, Nibong Tebal, Penang 14300, Malaysia. , (Malaysia)
  • 4 Universiti Kuala Lumpur Malaysian Spanish Institute, Kulim Hi-TechPark, Kulim, Kedah 09000, Malaysia. , (Malaysia)
Type
Published Article
Journal
Journal of Theoretical Biology
Publisher
Elsevier
Publication Date
Nov 21, 2017
Volume
433
Pages
73–84
Identifiers
DOI: 10.1016/j.jtbi.2017.08.016
PMID: 28844907
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Proper design of stent for application at specific aneurysm effect arteries could help to reduce the issues with thrombosis and aneurysm. In this paper, four types of stent configuration namely half-Y (6 mm), half-Y (4 mm), cross-bar, and full-Y configuration will implanted on real 3D artery bifurcation aneurysm effected arteries. Comparisons were then conducted based on the flow patterns after stent placement using both LBM-based solver and PIV experimental findings. According to the data obtained from all 4 stent designs, the flow profiles and the computed velocity from both methods were in agreement with each other. Both methods found that half-Y (6 mm) stent configuration is by far the best configuration in reducing the blood velocity at the vicinity of the aneurysm sac. The analysis also show that the half-Y (6 mm) stent configuration recorded the highest percentage of velocity reduction and managed to substantially reduce the pressure at the bifurcation region. This high flow velocity reduction through the use of half-Y stent could consequently promote the formation of thrombus thereby reducing the risk of rupture in the aneurysm sac. Copyright © 2017 Elsevier Ltd. All rights reserved.

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