| 支架孔率对脑动脉瘤血流动力学影响的三维数值模拟研究 |
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| 引用本文： | 张星,黄清海,施洋,余钊胜,邵雪明,刘建民.支架孔率对脑动脉瘤血流动力学影响的三维数值模拟研究[J].介入放射学杂志,2009,18(3). |
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| 作者姓名： | 张星 黄清海 施洋 余钊胜 邵雪明 刘建民 |
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| 作者单位： | 1. 上海第二军医大学长海医院神经外科,200433
2. 浙江大学流体力学研究所 |
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| 基金项目： | 上海市优秀学科带头人计划项目，上海市自然科学基金 |
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| 摘 要： | 目的 探讨不同支架网孔密度对支架植入后脑动脉瘤内血流动力学的影响.方法 建立宽颈的弯曲管侧壁型动脉瘤血流动力学三维数值模型,比较不同网孔密度支架植入前后,动脉瘤内血流动力学变化.结果动脉瘤远侧肇的速度峰值与壁面剪应力随着支架孔率下降而降低.瘤颈远侧壁及瘤顶部的压力场与支架孔率无明确的相关性.结论 数值模拟研究证实支架孔率是影响动脉瘤内血流动力学的关键因素,合适的支架孔率设计对动脉瘤血管重建治疗至关重要.
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| 关 键 词： | 脑动脉瘤 血流动力学 计算流体力学 支架 孔率 |
Influence of stent porosity on cerebral intra-aneurysmal hemodynamics:a three-dimensional numerical simulative study |
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| ZHANG Xing,HUANG Qing-hai,SHI Yang,YU Zhao-sheng,SHAO Xue-ruing,LIU Jian-min.Influence of stent porosity on cerebral intra-aneurysmal hemodynamics:a three-dimensional numerical simulative study[J].Journal of Interventional Radiology,2009,18(3). |
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| Authors: | ZHANG Xing HUANG Qing-hai SHI Yang YU Zhao-sheng SHAO Xue-ruing LIU Jian-min |
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| Institution: | ZHANG Xing,HUANG Qing-hai,SHI Yang,YU Zhao-sheng,SHAO Xue-ming,LIU Jian-min. Department of Neurosurgery,Changhai Hospital,Second Military Medical University,Shanghai 200433,China |
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| Abstract: | Objective To investigate the influence of stent properties on the alteration of cerebral intra-aneurysmal hemodynamics. Methods A wide-necked sidewall aneurysm model in a curved-vessel was created by using computational fluid dynamics simulations. The hemodynamic changes after deployment of the stent with different porosity were studied. Results The peak velocity and the wall shear stress correlated well with the porosity of the stents. The pressure in aneurysmal sac showed no changes with different stent p... |
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| Keywords: | cerebral aneurysm hemodynamics computational fluid dynamics stent porosity |
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