Cerebral aneurysm flow diverter modeled as a thin inhomogeneous porous medium in hemodynamic simulations

Abdehkakha, Armin; Hammond, Adam; Patel, Tatsat R.; Siddiqui, Adnan H.; Dargush, Gary F.; Meng, Hui

doi:10.1016/j.compbiomed.2021.104988

Cited by 18 publications

(6 citation statements)

References 41 publications

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“…4 b, and details of the 3D mesh, Fig. 4 c. The range of the meshing parameters have been selected taken into account previous studies [ 36 , 37 ]. Nevertheless, a mesh convergence study was carried out in order to select the optimal meshing parameters.…”

Section: Methodsmentioning

confidence: 99%

Numerical Study of a Thrombus Migration Risk in Aneurysm After Coil Embolization in Patient Cases: FSI Modelling

Paz

Suárez

Cabarcos

et al. 2023

Cardiovasc Eng Tech

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Purpose There are still many challenges for modelling a thrombus migration process in aneurysms. The main novelty of the present research lies in the modelling of aneurysm clot migration process in a realistic cerebral aneurysm, and the analysis of forces suffered by clots inside an aneurysm, through transient FSI simulations. Methods The blood flow has been modelled using a Womersley velocity profile, and following the Carreau viscosity model. Hyperelastic Ogden model has been used for clot and isotropic linear elastic model for the artery walls. The FSI coupled model was implemented in ANSYS® software. The hemodynamic forces suffered by the clot have been quantified using eight different clot sizes and positions inside a real aneurysm. Results The obtained results have shown that it is almost impossible for clots adjacent to aneurysm walls, to leave the aneurysm. Nevertheless, in clots positioned in the centre of the aneurysm, there is a real risk of clot migration. The risk of migration of a typical post-coiling intervention clot in an aneurysm, in contact with the wall and occupying a significant percentage of its volume is very low in the case studied, even in the presence of abnormally intense events, associated with sneezes or impacts. Conclusions The proposed methodology allows evaluating the clot migration risk, vital for evaluating the progress after endovascular interventions, it is a step forward in the personalized medicine, patient follow-up, and helping the medical team deciding the optimal treatment. Graphical Abstract

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Section: Methodsmentioning

confidence: 99%

Numerical Study of a Thrombus Migration Risk in Aneurysm After Coil Embolization in Patient Cases: FSI Modelling

Paz

Suárez

Cabarcos

et al. 2023

Cardiovasc Eng Tech

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“…To use the posterior distribution calculated from the observed cases, this adoption of data is the highest posterior distribution class [9]. This method usually works well in exercise, despite the fact that it is based on presumptions that are not always true.…”

Section: Bayesian Classifiermentioning

confidence: 99%

Bio-inspired and deep learning approach for cerebral aneurysms prediction in healthcare environment

Srividhya¹,

Arunachalam²

2022

IJ-AI

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<span lang="EN-US">Diagnosis is being used in a variety of fields, including treatments, scientific knowledge, technology, industry, and many deals. A diagnosis begins with the person’s complaints and understanding something about the condition of the patient dynamically while in a question-and-answer session, as well as by taking measurements, like blood pressure or skin temperature, among other things. The prognosis is then calculated by considering the obtainable patient information. The adequate intervention is then prescribed, and the method may be repeated. In the medical field, humans, sometimes, have constraints when diagnosing diagnosis, primarily because this procedure is arbitrary and heavily relies on the assessor’s memories and perception of patient transmissions. The work is primarily concerned with the investigation of cerebellar aneurysm diagnosing. In the meantime, it’s become evident even during literature reviews research that a much more basis of theoretical research of a number of existing learning methods was required. As a result, this paper is to provide a comparison of classification techniques like tree structure, random trees, and regression. At about the same time, another important goal is to have a decision-making framework based on biomimetic elephant-whale enhancement for a great deal of consideration of cerebral aneurysm variables, providing a quick, accurate, and dependable clinical medicine remedy.</span>

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“…The research on this topic has been significantly improved by the invention of magnetic resonance angiography (MRA) and computed tomography angiography (CIA). In fact, these techniques enable researchers to access the main geometrical aspects of the aneurysm and use them for further investigations (Coady et al 1997 ; Abdehkakha et al 2021 ). They analyzed blood hemodynamics by this technique to find the main source of the aneurysm growth.…”

Section: Introductionmentioning

confidence: 99%

Influence of stent-induced vessel deformation on hemodynamic feature of bloodstream inside ICA aneurysms

Sabernaeemi

Gerdroodbary

Salavatidezfouli

et al. 2023

Biomech Model Mechanobiol

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One of the effective treatment options for intracranial aneurysms is stent-assisted coiling. Though, previous works have demonstrated that stent usage would result in the deformation of the local vasculature. The effect of simple stent on the blood hemodynamics is still uncertain. In this work, hemodynamic features of the blood stream on four different ICA aneurysm with/without interventional are investigated. To estimate the relative impacts of vessel deformation, four distinctive ICA aneurysm is simulated by the one-way FSI technique. Four hemodynamic factors of aneurysm blood velocity, wall pressure and WSS are compared in the peak systolic stage to disclose the impact of defamation by the stent in two conditions. The stent usage would decrease almost all of the mentioned parameters, except for OSI. Stenting reduces neck inflow rate, while the effect of interventional was not consistent among the aneurysms. The deformation of an aneurysm has a strong influence on the hemodynamics of an aneurysm. This outcome is ignored by most of the preceding investigations, which focused on the pre-interventional state for studying the relationship between hemodynamics and stents. Present results show that the application of stent without coiling would improve most hemodynamic factors, especially when the deformation of the aneurysm is high enough.

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Cerebral aneurysm flow diverter modeled as a thin inhomogeneous porous medium in hemodynamic simulations

Cited by 18 publications

References 41 publications

Numerical Study of a Thrombus Migration Risk in Aneurysm After Coil Embolization in Patient Cases: FSI Modelling

Numerical Study of a Thrombus Migration Risk in Aneurysm After Coil Embolization in Patient Cases: FSI Modelling

Bio-inspired and deep learning approach for cerebral aneurysms prediction in healthcare environment

Influence of stent-induced vessel deformation on hemodynamic feature of bloodstream inside ICA aneurysms

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