Numerical simulation for hemodynamics at the bifurcations of subclavian artery, common
carotid artery and vertebral artery(PDF)
《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]
- Issue:
- 2021年第9期
- Page:
- 1151-1187
- Research Field:
- 生物材料与力学
- Publishing date:
Info
- Title:
- Numerical simulation for hemodynamics at the bifurcations of subclavian artery, common
carotid artery and vertebral artery
- Author(s):
- ZHAO Hongming1; PENG Hongmei1; ZHANG Dongwei2; CHEN Yang1
- 1. College of Mathematics and Physics, Inner Mongolia Minzu University, Tongliao 028043, China 2. Department of Neurology,
Affiliated Hospital of Inner Mongolia Minzu University, Tongliao 028000, China
- Keywords:
- subclavian artery common carotid artery vertebral artery medical modeling hemodynamics computational
fluid dynamics
- PACS:
- R318.01；O357.1
- DOI:
- 10.3969/j.issn.1005-202X.2021.09.019
- Abstract:
- Objective To explore the hemodynamic characteristics at the bifurcations of subclavian artery, common carotid
artery and vertebral artery, and to analyze the hemodynamic reason for the insufficiency of the cerebral blood supply caused
by vascular stenosis occurred here. Methods The CT data provided by Department of Neurology, Affiliated Hospital of Inner
Mongolia Minzu University were used in the study. The medical modeling software MIMICS 20.0 was used to reconstruct
the two-dimensional CT date into three-dimensional blood vessel, and after grid division and boundary condition setting, it
was imported into computational fluid dynamics software FLUENT14.5. The hemodynamic characteristics at the
bifurcations of subclavian artery, common carotid artery and vertebral artery with different blood inlet velocities were
calculated and analyzed. Results The distributions of blood flow field, blood pressure and wall shear stress at the bifurcations
of subclavian artery, common carotid artery and vertebral artery changed significantly when the blood inlet velocity was
different. With the increasing blood inlet velocity, the blood flow velocities at subclavian artery bifurcation and common
carotid artery bifurcation were faster, and the vessel wall pressure at the bifurcations was increased, and the shear stress of the
medial common carotid artery was larger, but the shear stress and change range of the vessel wall at subclavian artery
bifurcation and common carotid artery bifurcation were small, indicating that subclavian artery bifurcation and common
carotid artery bifurcation still belonged to the low shear stress area. Conclusion The analysis on the hemodynamic reasons
for the insufficiency of the cerebral blood supply caused by atherosclerotic plaque at the bifurcation of subclavian artery,
common carotid artery and vertebral artery bifurcate are realized through the hemodynamic numerical simulation.
Last Update: 2021-09-27