摘要
目的应用多孔介质技术模拟计算黏性阻力系数对颅内动脉瘤(IA)的血流分布特征的影响,为临床医生介入术规划提供辅助决策方法。方法采集牡丹江医学院附属红旗医院1例IA患者CTA影像数据。利用医学建模软件MIMICS与计算流体力学软件FLUENT三维建模、网格划分获得有限元模型,运用多孔介质模型算法模拟IA血流导向装置(FD)不同计算黏性系数(50%,100%)的血流动力学分布特征,并以无FD动脉瘤为对照分析计算黏性系数对动脉瘤体内的血流分布影响。结果计算黏性系数对IA的血流速度、压力、壁切应力均有一定的影响。结论FD动脉瘤介入术中,可通过调整动脉瘤FD的计算黏性系数来达到调整血流状态,并且基于多孔介质技术模拟动脉瘤血流状态可为动脉瘤的介入术提供辅助决策方法。
Objective To study the effect of viscous drag coefficient calculated by using porous media technology on the blood flow distribution of intracranial aneurysm(IA),to help clinical doctors make plans for interventional surgery.Methods CTA data of a cerebral aneurysm patient from Hongqi Hospital Affiliated to Mudanjiang Medical College were collected with the informed consent of the patient and the approval of the hospital ethics committee.The computational fluid dynamics model was created through 3D modeling and mesh division using the medical modeling software MIMICS and the computational fluid dynamic software FLUENT.The porous media model was used to simulate the blood flow diversion device(FD)for IA to study the hemodynamics distribution of the different viscosity coefficients(50%,100%).Compared with the aneurysm without the device,the effect of calculation of viscosity coefficient on the distribution of blood flow in the aneurysm was analyzed.Results The calculated viscosity coefficient was positively correlated with the velocity,pressure,and wall shear stress of cerebral aneurysm.Conclusion The porous media model can be used to simulate the FD for intracranial aneurysm.The blood flow in aneurysm can be adjusted by calculating the viscosity coefficient.The simulation of aneurysm blood flow based on porous media technology can provide an auxiliary decision-making method for aneurysm intervention.
作者
张琪
林强
杨海明
宿海超
ZHANG Qi;LIN Qiang;YANG Haiming;SU Haichao(Department of Rehabilitation,Hongqi Hospital Affiliated to Mudanjiang Medical College,Heilongjiang,Mudanjiang 157011,China)
出处
《中国医药科学》
2022年第17期35-37,78,共4页
China Medicine And Pharmacy
关键词
多孔介质
颅内动脉瘤
血流导向装置
血流动力学参数
Porous media
Intracranial aneurysm
Blood flow diversion device
Hemodynamics parameters
