Analysis of Intracranial Aneurysm Haemodynamics Altered by Wall Movement

Computational fluid dynamics is intensively used to deepen our understanding of aneurysm growth and rupture in an attempt to support physicians during therapy planning. Numerous studies assumed fully rigid vessel walls in their simulations, whose sole haemodynamics may fail to provide a satisfactory...

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Bibliographic Details
Published in:Bioengineering (Basel) 2024-03, Vol.11 (3), p.269
Main Authors: Goetz, Aurèle, Jeken-Rico, Pablo, Chau, Yves, Sédat, Jacques, Larcher, Aurélien, Hachem, Elie
Format: Article
Language:English
Subjects:
Aneurysm
Aneurysms
arterial tissue modelling
Boundary conditions
Brain research
Care and treatment
Computational fluid dynamics
Decision-making
Diagnosis
Engineering Sciences
Flow distribution
Fluid-structure interaction
Fluids mechanics
Geometry
haemodynamics
Health aspects
Health risk assessment
Hemodynamic monitoring
Hemodynamics
Interaction models
intracranial aneurysm
Intracranial aneurysms
Mechanics
Methods
Modelling
Rigid walls
Risk assessment
Rupture
Simulation
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Summary:Computational fluid dynamics is intensively used to deepen our understanding of aneurysm growth and rupture in an attempt to support physicians during therapy planning. Numerous studies assumed fully rigid vessel walls in their simulations, whose sole haemodynamics may fail to provide a satisfactory criterion for rupture risk assessment. Moreover, direct in vivo observations of intracranial aneurysm pulsation were recently reported, encouraging the development of fluid-structure interaction for their modelling and for new assessments. In this work, we describe a new fluid-structure interaction functional setting for the careful evaluation of different aneurysm shapes. The configurations consist of three real aneurysm domes positioned on a toroidal channel. All geometric features, employed meshes, flow quantities, comparisons with the rigid wall model and corresponding plots are provided for the sake of reproducibility. The results emphasise the alteration of flow patterns and haemodynamic descriptors when wall deformations were taken into account compared with a standard rigid wall approach, thereby underlining the impact of fluid-structure interaction modelling.
ISSN:2306-5354
2306-5354
DOI:10.3390/bioengineering11030269