Hemodynamics of aneurysm intervention with different stents

doi:10.1088/1674-1056/ac5603

中国物理B ›› 2022, Vol. 31 ›› Issue (6): 64701-064701.doi: 10.1088/1674-1056/ac5603

Hemodynamics of aneurysm intervention with different stents

Peichan Wu(吴锫婵)^1,†, Yuhan Yan(严妤函)^2,†, Huan Zhu(朱欢)³, Juan Shi(施娟)^1,‡, and Zhenqian Chen(陈振乾)¹

1 School of Energy and Environment, Southeast University, Nanjing 210096, China;
2 Department of Geriatrics, General Hospital of Eastern Theater Command, Nanjing 210002, China;
3 Department of Pediatrics, Zhongda Hospital, Southeast University, Nanjing 210009, China

收稿日期:2021-11-01 修回日期:2022-01-31 接受日期:2022-02-17 出版日期:2022-05-17 发布日期:2022-05-31
通讯作者: Juan Shi E-mail:Shi_juan@seu.edu.cn
基金资助:
Project supported by Management Project of General Hospital of Eastern Theater Command (Grant No. YYBJ2021043).

Hemodynamics of aneurysm intervention with different stents

Peichan Wu(吴锫婵)^1,†, Yuhan Yan(严妤函)^2,†, Huan Zhu(朱欢)³, Juan Shi(施娟)^1,‡, and Zhenqian Chen(陈振乾)¹

1 School of Energy and Environment, Southeast University, Nanjing 210096, China;
2 Department of Geriatrics, General Hospital of Eastern Theater Command, Nanjing 210002, China;
3 Department of Pediatrics, Zhongda Hospital, Southeast University, Nanjing 210009, China

Received:2021-11-01 Revised:2022-01-31 Accepted:2022-02-17 Online:2022-05-17 Published:2022-05-31
Contact: Juan Shi E-mail:Shi_juan@seu.edu.cn
Supported by:
Project supported by Management Project of General Hospital of Eastern Theater Command (Grant No. YYBJ2021043).

摘要/Abstract

摘要： An ideal cerebral aneurysm model with different stent forms is established. By using the single-relaxation-time (SRT) lattice Boltzmann method (LBM) to solve the flow field, the blood flow characteristics in the aneurysm under different conditions are studied numerically. The intra-arterial stenting of saccular aneurysms at different Reynolds numbers and the feasibility of new stenting forms such as double stenting and variable-spacing stenting in the aneurysms are explored. The hemodynamic factors such as velocity distribution and wall shear stress (WSS) in the aneurysm are analyzed. Numerical results show that the risk of aneurysm rupture is mainly centralized at the right corner of the aneurysm. Intervention of stents in the aneurysm can effectively reduce the intra-aneurysmal velocity and WSS, and decrease the danger of aneurysm rupture during strenuous exercise or emotional excitement. At the same time, the intervention of a double stent and the stent shape with a dense anterior part in the aneurysm has certain advantages in preventing aneurysm rupture. The intra-aneurysmal mean velocity reduction can reach 90.39% and 80.29% after the intervention of the double stent and the anterior densified stent respectively.

关键词: aneurysm, hemodynamics, stent, lattice Boltzmann method

Abstract: An ideal cerebral aneurysm model with different stent forms is established. By using the single-relaxation-time (SRT) lattice Boltzmann method (LBM) to solve the flow field, the blood flow characteristics in the aneurysm under different conditions are studied numerically. The intra-arterial stenting of saccular aneurysms at different Reynolds numbers and the feasibility of new stenting forms such as double stenting and variable-spacing stenting in the aneurysms are explored. The hemodynamic factors such as velocity distribution and wall shear stress (WSS) in the aneurysm are analyzed. Numerical results show that the risk of aneurysm rupture is mainly centralized at the right corner of the aneurysm. Intervention of stents in the aneurysm can effectively reduce the intra-aneurysmal velocity and WSS, and decrease the danger of aneurysm rupture during strenuous exercise or emotional excitement. At the same time, the intervention of a double stent and the stent shape with a dense anterior part in the aneurysm has certain advantages in preventing aneurysm rupture. The intra-aneurysmal mean velocity reduction can reach 90.39% and 80.29% after the intervention of the double stent and the anterior densified stent respectively.

Key words: aneurysm, hemodynamics, stent, lattice Boltzmann method

中图分类号: (Biological fluid dynamics)

47.63.-b

47.15.-x (Laminar flows) 47.60.Dx (Flows in ducts and channels) 47.11.-j (Computational methods in fluid dynamics)

Peichan Wu(吴锫婵), Yuhan Yan(严妤函), Huan Zhu(朱欢), Juan Shi(施娟), and Zhenqian Chen(陈振乾). Hemodynamics of aneurysm intervention with different stents[J]. 中国物理B, 2022, 31(6): 64701-064701.

Peichan Wu(吴锫婵), Yuhan Yan(严妤函), Huan Zhu(朱欢), Juan Shi(施娟), and Zhenqian Chen(陈振乾). Hemodynamics of aneurysm intervention with different stents[J]. Chin. Phys. B, 2022, 31(6): 64701-064701.

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Hemodynamics of aneurysm intervention with different stents

Hemodynamics of aneurysm intervention with different stents

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