Abstract

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Title:: Status of blood flow in vertebrobasilar artery before and after interventional treatment: an analysis of a case of vertebral artery stenosis

Author(s):: ZHAO Hongming1; PENG Hongmei1; ZHANG Dongwei2; ZHANG Hongna3; 1. College of Mathematics and Physics, Inner Mongolia Minzu University, Tongliao 028000, China 2. Department of Neurology, Affiliated Hospital of Inner Mongolia Minzu University, Tongliao 028007, China 3. College of Engineering, Inner Mongolia Minzu University, Tongliao 028000, China

Keywords:: Keywords: fluid-solid coupling intracranial vertebral artery stenosis stent implantation hemodynamics

Abstract:: Abstract: Objective To explore the hemodynamic characteristics in the vertebrobasilar artery before and after stent implantation in a case of intracranial vertebral artery stenosis using the fluid-solid coupling method based on the interaction of blood and elastic vessel wall. Methods Medical modeling software was used for the 3D reconstruction of 2D CT data to obtain the vertebrobasilar artery model before and after stent implantation. Then the blood flow characteristics in the vertebrobasilar artery before and after stent implantation were numerically simulated using fluid-solid coupling method for analyzing the hemodynamic characteristics in the vertebrobasilar artery. Results The blood flow field, blood pressure, vessel wall shear stress and vessel wall shape of vertebrobasilar artery after stent implantation were significantly different from those before stent implantation. After stent implantation, the force on both sides of the middle part of the basilar artery became uniform, the blood flow velocity increased significantly, the pressure at the stent implantation increased, and the upstream pressure and shear stress at the stent decreased. Conclusion After interventional treatment, the blood flow environment and stress in the vertebrobasilar artery are significantly improved. Timely intervention should be performed after the occurrence of vertebral artery stenosis to avoid involving the basilar artery and the posterior circulation system.