Hemodynamic investigation of a patient-specific abdominal aortic aneurysm with iliac artery tortuosity
Hemodynamic investigation of a patient-specific abdominal aortic aneurysm with iliac artery tortuosity
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伴有髂动脉迂曲的患者特异性腹主动脉瘤的血流动力学研究
DOI：
10.1080/10255842.2018.1522531
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发表时间：
2018-12-10
影响因子：
1.6
通讯作者：
Zheng, Tinghui
中科院分区：
文献类型：
--
作者：
Qiu, Yue;Yuan, Ding;Zheng, Tinghui
本文描述了一项关于患者特定AAA伴迂曲髂总动脉（CIA）和髂外动脉（EIA）的血流动力学环境的系统研究。从CT扫描和随后的计算模拟进行3D重建。结果表明，牛顿模型和非牛顿模型具有非常相似的流场和WSS分布。更重要的是，它揭示了折磨中央情报局保持其螺旋流。结果表明，牛顿流体的假设能够较好地描述颅内血流动力学。此外，据推测，生理性螺旋流动保护扭曲的CIA免于血栓形成。
This paper describes a systematic investigation on the hemodynamic environment in a patient-specific AAA with tortuous common iliac artery(CIA) and external iliac artery (EIA). 3D reconstructions from CT scans and subsequent computational simulation are carried out. It is found out that the Newtonian and non-Newtonian models have very similar flow field and WSS distribution. More importantly, it is revealed that the torturous CIA maintained its helical flow. It is concluded that the assumption of Newtonian blood is adequate in capturing the intra-aneurysmal hemodynamics. Moreover, it is speculated that the physiological spiral flow protects the twisted CIA from the thrombosis formation.