A patient-specific computational model of fluid–structure interaction in abdominal aortic aneurysms

Wolters, Bjbm Berent; Rutten, Mcm Marcel; Schurink, Gwh Geert Willem; Kose, Ursula; Hart, de J Jürgen; Vosse, van de Fn Frans

doi:10.1016/j.medengphy.2005.06.008

Cited by 173 publications

(145 citation statements)

References 37 publications

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“…Despite its modeling shortcomings, pure CFD remains the predominant modeling approach for vascular blood flow, and, in particular, for computation of aneurysm flows. Notable exceptions include the work of (Takizawa et al 2010a,b;Torii et al 2006aTorii et al ,b, 2007Torii et al , 2008Torii et al , 2009) on cerebral aneurysms and the work of (Wolters et al 2005;Scotti and Finol 2007;Rissland et al 2009) on aortic abdominal aneurysms. This paper likewise focuses on developing and using advanced FSI computational techniques to assess the risk of rupture for cerebral aneurysms in individual patients.…”

Section: Introductionmentioning

confidence: 99%

Computational vascular fluid–structure interaction: methodology and application to cerebral aneurysms

Bazilevs

Hsu

Zhang

et al. 2010

Biomech Model Mechanobiol

235

132

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A computational vascular fluid-structure interaction framework for the simulation of patient-specific cerebral aneurysm configurations is presented. A new approach for the computation of the blood vessel tissue prestress is also described. Simulations of four patient-specific models are carried out, and quantities of hemodynamic interest such as wall shear stress and wall tension are studied to examine the relevance of fluid-structure interaction modeling when compared to the rigid arterial wall assumption. We demonstrate that flexible wall modeling plays an important role in accurate prediction of patient-specific hemodynamics. Discussion of the clinical relevance of our methods and results is provided.

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Section: Introductionmentioning

confidence: 99%

Computational vascular fluid–structure interaction: methodology and application to cerebral aneurysms

Bazilevs

Hsu

Zhang

et al. 2010

Biomech Model Mechanobiol

235

132

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“…Although the blood is known to be non-Newtonian in general, several studies, like [7], [11], [31], [26], [19], [27] and [20], assume it to be Newtonian, as we do in this paper. Cebral, et al show in [9] that, for cerebral aneurysms, treatment of blood as Newtonian does not alter the computational results compared to treating it as non-Newtonian.…”

Section: Mechanical Properties and Boundary Conditionsmentioning

confidence: 90%

“…There have been several patient-specific FSI simulations of aneurysms, involving both intracranial aneurysms ( [7], [24], [25], [26], [28]) and AAA, namely abdominal aortic aneurysms ( [12], [31], [18], [22]). Numerous advances in the simulation technology were proposed, but the majority of them involved only computational fluid dynamics (CFD).…”

Section: Introductionmentioning

confidence: 99%

Fluid-Structure Simulations and Benchmarking of Artery Aneurysms Under Pulsatile Blood Flow

Aulisa¹,

Bornia²,

Calandrini³

2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Abstract. In this paper Fluid-structure interaction (FSI) simulations of artery aneurysms are carried out where both the fluid flow and the hyperelastic material are incompressible. We focus on time-dependent formulations adopting a monolithic approach, where the deformation of the fluid domain is taken into account according to an Arbitrary Lagrangian Eulerian (ALE) scheme. The exact Jacobian matrix is implemented by using automatic differentiation tools. The system is modeled using a specific equation shuffling that assures an optimal pivoting. We propose to solve the resulting linearized system at each nonlinear outer iteration with a GMRES solver preconditioned by a geometric multigrid algorithm with an Additive Schwarz Method (ASM) smoother.In order to test our numerical method on possible hemodynamics applications, we describe several benchmark settings. The configurations consist of realistic artery aneurysms where hybrid meshes are employed. Both two and three-dimensional benchmarks are considered. We show numerical results for the described aneurysm geometries focusing on pulsatile inflow conditions. Parallel implementation is addressed and a case of endovascular stent implantation on a cerebral aneurysm is presented. 955Available online at www.eccomasproceedia.org Eccomas Proceedia COMPDYN (2017) 955-974

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“…Two volume-meshing approaches have been implemented: hexahedral meshing by deformation of a standard mesh [51] and Delauney tetrahedral meshing [29]. Hexahedral meshes are particularly suited for finite-element/volume calculations, but they are less suited for accurately representing complex highly curved geometries.…”

Section: Volume Meshingmentioning

confidence: 99%

“…Tetrahedral and hexahedral volume meshes could be automatically generated based on the obtained lumen surface segmentations [29,51]. Overall time needed for lumen segmentation, derivation of the Qflow profile, registration and meshing was less than 5 min per image data set on a Dell 650, Dual Processor, 3 GHz PC (including time needed for manual corrections).…”

Section: Flow Modelingmentioning

confidence: 99%

Towards patient-specific risk assessment of abdominal aortic aneurysm

Breeuwer

Putter

Kose

et al. 2008

Med Biol Eng Comput

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Document VersionPublisher's PDF, also known as Version of Record (includes final page, issue and volume numbers)Please check the document version of this publication:• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication Citation for published version (APA):Breeuwer, M., Putter, de, S., Kose, U., Speelman, L., Visser, K., Gerritsen, F. A., ... Vosse, van de, F. N. (2008). Towards patient-specific risk assessment of abdominal aortic aneurysm. Medical and Biological Engineering and Computing, 46(11), 1085-1095. DOI: 10.1007/s11517-008-0393-0 General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Abstract Diagnosis of vascular disease and selection and planning of therapy are to a large extent based on the geometry of the diseased vessel. Treatment of a particular vascular disease is usually considered if the geometrical parameter that characterizes the severity of the disease, e.g. % vessel narrowing, exceeds a threshold. The thresholds that are used in clinical practice are based on epidemiological knowledge, which has been obtained by clinical studies including large numbers of patients. They may apply ''on average'', but they can be sub-optimal for individual patients. To realize more patient-specific treatment decision criteria, more detailed knowledge may be required about the vascular hemodynamics, i.e. the blood flow and pressure in the diseased vessel and the biomechanical reaction of the vessel wall to this flow and pressure. Over the last decade, a substantial number of publications have appeared on hemodynamic modeling. Some studies have provided first evidence that this modeling may indeed be used to support therapeutic decisions. The goal of the research reported in this paper is to go one step further, namely to investigate the feasibilit...

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A patient-specific computational model of fluid–structure interaction in abdominal aortic aneurysms

Cited by 173 publications

References 37 publications

Computational vascular fluid–structure interaction: methodology and application to cerebral aneurysms

Computational vascular fluid–structure interaction: methodology and application to cerebral aneurysms

Fluid-Structure Simulations and Benchmarking of Artery Aneurysms Under Pulsatile Blood Flow

Towards patient-specific risk assessment of abdominal aortic aneurysm

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