Computational study of blood hemodynamic in ICA aneurysm with coiling embolism

Poueinak, Milad Mirzaei; Abdollahi, Seyyed Amirreza; Alizadeh, As’ad; Youshanlui, Mahya Ahmadpour; Zekri, Hussein Jebrail; Gerdroodbary, M. Barzegar

doi:10.1142/s0129183123501383

Cited by 22 publications

(12 citation statements)

References 34 publications

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“…Figure 3 displayed the produced grid for the selected ICA aneurysms. Boundary layer is applied for the grid production near the aneurysm wall 32 – 35 . The resolution of applied grid near the wall inside the aneurysms is higher than other sections due to its important on the archived results 36 – 40 .…”

Section: Governing Equation and Computational Techniquementioning

confidence: 99%

Investigation of the stent induced deformation on hemodynamic of internal carotid aneurysms by computational fluid dynamics

Salavatidezfouli

Alizadeh

Gerdroodbary

et al. 2023

Sci Rep

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Application of the stent for treatment of the internal carotid artery (ICA) aneurysms has been extensively increased in recent decades. In the present work, stent-induced deformations of the parent vessel of ICA aneurysms are fully investigated. This study tries to visualize blood stream and calculated hemodynamic factors inside the four ICA aneurysms after deformations of parent vessel. For the simulation of the non-Newtonian blood stream, computational fluid dynamic is applied with one-way Fluid–Solid interaction (FSI) approach. Four ICA aneurysms with different ostium sizes and neck vessel angle are selected for this investigation. Wall shear stress on wall of aneurysm is analyzed in two angles of deformation due to application of the stent. Blood flow investigation shows that the deformation of the aneurysm limited blood entrance to the sac region and this decreases the blood velocity and consequently oscillatory shear index (OSI) on the sac wall. It is also observed that the stent-induced deformation is more effective on those cases with extraordinary OSI values on aneurysm wall.

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Section: Governing Equation and Computational Techniquementioning

confidence: 99%

Investigation of the stent induced deformation on hemodynamic of internal carotid aneurysms by computational fluid dynamics

Salavatidezfouli

Alizadeh

Gerdroodbary

et al. 2023

Sci Rep

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“…They analyzed blood hemodynamics by this technique to find the main source of the aneurysm growth. Meanwhile, the analysis of the high-risk region of the aneurysm becomes possible with these techniques (Lobato and Puech-Leao 1998;Eleftriades 2002;Mirzaei Poueinak et al 2023).…”

Section: Application Of Cad In Intracranial Arteries and Iamentioning

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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“…The density of the mixture and viscosity is estimated via volume fraction averaging 66 – 70 . where is the volume percentage and digits belong to the phase.…”

Section: Mathematical Simulationmentioning

confidence: 99%

Computational fluid dynamics simulation of two-phase flow patterns in a serpentine microfluidic device

Amini

Ghazanfari

Heydari

et al. 2023

Sci Rep

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In the current research work, the flow behavior of a liquid–liquid extraction (LLE) process in a serpentine microchannel was analyzed. The simulation was performed using a 3D model and the results were found to be consistent with experimental data. The impact of the flow of chloroform and water on the flow model was also examined. The data indicate that once the aqua and organic phases flow rates are low and similar, a slug flow pattern is observed. However, as the overall flow rate raises, the slug flow transforms into parallel plug flow or droplet flow. An increment in the aqua flows while maintaining a constant organic phase flow rate results in a transition from slug flow to either droplet flow or plug flow. Finally, the patterns of flow rate in the serpentine micro-channel were characterized and depicted. The results of this study will provide valuable insights into the behavior of two-phase flow patterns in serpentine microfluidic devices. This information can be used to optimize the design of microfluidic devices for various applications. Furthermore, the study will demonstrate the applicability of CFD simulation in investigating the behavior of fluids in microfluidic devices, which can be a cost-effective and efficient alternative to experimental studies.

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Computational study of blood hemodynamic in ICA aneurysm with coiling embolism

Cited by 22 publications

References 34 publications

Investigation of the stent induced deformation on hemodynamic of internal carotid aneurysms by computational fluid dynamics

Investigation of the stent induced deformation on hemodynamic of internal carotid aneurysms by computational fluid dynamics

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

Computational fluid dynamics simulation of two-phase flow patterns in a serpentine microfluidic device

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