FSI modeling on the effect of artery-aneurysm thickness and coil embolization in patient cases

• Tipo: Artigo em Revista Científica Internacional
• Data: 2021-05-14

Autores

C. Paz (Autor) Outra; E. Suárez (Autor) Outra; A. Cabarcos (Autor) Outra; Sónia I. S. Pinto (Autor) FEUP

Revista

Título: Computer Methods and Programs in Biomedicine

Vol. 206

Páginas: 1-12

ISSN: 0169-2607

Editora: Elsevier

Indexação

ISI Web of Knowledge

Scopus

Classificação Científica

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia mecânica ; Ciências Tecnológicas > Engenharia > Engenharia biomédica

FOS: Ciências da engenharia e tecnologias > Engenharia mecânica ; Ciências da engenharia e tecnologias > Engenharia médica

Outras Informações

DOI: 10.1016/j.cmpb.2021.106148

Abstract (EN): Background and objective: The attainment of a methodology to simulate the hemodynamic in patient-specific cerebral vessels with aneurysms is still a challenge. The novelty of this work is focused on the effect of coil embolization in a realistic cerebral aneurysm, according to the vessel wall thickness and aneurysm thickness, through transient FSI simulations. Methods: The quality of the mesh for simulations was checked with a specific mesh convergence study; and the numerical methodology was validated using numerical research data of the literature. The model was implemented in ANSYS® software. The total deformation and equivalent stress evolution in the studied cases, before and after coil embolization, were compared. More than 20 different models were employed due to different arterial wall thickness and aneurysm wall thickness combinations. Results: The obtained results have showed that deformation and stress values are highly influenced with the sac thickness. The thinner sac aneurysm thickness is, the greater deformation and stress are. The results after coil embolization process have highlighted that considering typical values of arterial wall thickness and aneurysm thickness 0.3 mm and 0.15 mm respectively, a deformation reduction around 50% and a stress reduction around 70% can be achieved. Conclusions: The proposed methodology is a step forward in the personalized medicine, quantifying the aneurysm rupture risk reduction, and helping the medical team in the preoperative planning, or to deciding the optimal treatment. © 2021

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12