A comparative study between CFD and FSI hemodynamic parameters in a patientspecific giant saccular cerebral aneurysm | ||
| AUT Journal of Modeling and Simulation | ||
| مقاله 27، دوره 53، شماره 1، شهریور 2021، صفحه 23-38 اصل مقاله (1.7 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22060/miscj.2020.18742.5222 | ||
| نویسندگان | ||
| Reza Abdollahi1؛ Bahman Vahidi* 2؛ Pejman Shojaee3؛ Mohammad Karimi4 | ||
| 1Division of Biomedical Engineering, Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran; Centre de recherche du centre hospitalier de l’Universite ’de Montr ́eal (CRCHUM), Montreal, Canada; Institut de genie biomedical , Universite de Montreal, Montreal, Canada | ||
| 2Division of Biomedical Engineering, Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran | ||
| 3Department of Biomedical Engineering, Division of Biomechanics, Sahand University of Technology, Tabriz, Iran | ||
| 4Chief of Services Stroke Neurology and Interventional Neuroradiology, Milad Hospital, Tehran,Iran; Head of Neuro-intervention, Nikan Hospital, Tehran, Iran | ||
| چکیده | ||
| Nowadays, biomechanical methods are useful to identify the cause and treating of diseases. One of these diseases is the cerebral aneurysm. This disease starts by the inflation of artery wall and then by rupturing, it leads to intracranial hemorrhage. Therefore, it leads to morbidity or even it is the cause of the mortality for many patients. For this reasons, it is important to anticipate the emersion, growth and the rupture of a cerebral aneurysm. Computational fluid dynamics (CFD) and 2-way fluid-structure interaction (FSI) are common methods for interrogation the rupture of aneurysms and evaluating the effective hemodynamic parameters. In this study, they were employed to obtain appropriate information of a cerebral aneurysm. A patient-specific giant aneurysm was chosen in the internal carotid artery (ICA). Mooney-Rivlin parameters were used for the solid part and a non-Newtonian Carreu model was employed in the fluid part. Important hemodynamic parameters such as wall shear stress (WSS), time average wall shear stress (TAWSS), spatial average wall shear stress (SAWSS), oscillatory shear index (OSI), and relative residence time (RRT) were discussed. In addition, these methods were then compared and the number of cycles assessed to determine the accuracy of the solutions. Both methods illustrate a similar location for the risk of a rupture related to these hemodynamic parameters but with different quantities. The novelty of this works lies at the feasibility of using the FSI and CFD methods to show the cost function in the future clinical decision-making. | ||
| کلیدواژهها | ||
| way fluid structure interactions (FSI)؛ Computational fluid dynamics (CFD)؛ Hemodynamic parameters؛ Wall shear stress (WSS)؛ Relative residence time (RRT) | ||
| مراجع | ||
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