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沿人体动脉树弹性模型的速度分布。

Velocity distribution along an elastic model of human arterial tree.

作者信息

Rieu R, Friggi A, Pelissier R

出版信息

J Biomech. 1985;18(9):703-15. doi: 10.1016/0021-9290(85)90025-9.

DOI:10.1016/0021-9290(85)90025-9
PMID:2934394
Abstract

An experimental investigation of an elastic model of the human arterial tree, has been performed for physiological type flow by pulsed Doppler ultrasonic velocimetry. The arterial tree model, fabricated in clear polyurethane, includes the aortic arch, with a Starr-Edwards ball valve mounted in the root of the aorta, the descending aorta and the iliac bifurcation. Our study showed that the velocity profile, a few centimeters beyond the valve, is skewed, with higher velocities towards the top and the inner wall (anatomically the posterior and left lateral wall). An inward shift of the maximum velocity and reverse flow are denoted along the inner wall of the aortic arch. The velocity profiles in the descending aorta are blunted. Downstream from the vertex of the iliac bifurcation, there is vorticity creation, but the branching effect is quickly damped by the pulsatility of the flow and the elasticity of the wall.

摘要

通过脉冲多普勒超声测速仪对人体动脉树弹性模型进行了生理类型血流的实验研究。由透明聚氨酯制成的动脉树模型包括主动脉弓,在主动脉根部安装了一个斯塔尔-爱德华兹球瓣,降主动脉和髂动脉分叉处。我们的研究表明,在瓣膜几厘米外的速度剖面是倾斜的,顶部和内壁(解剖学上是后壁和左侧壁)的速度较高。沿主动脉弓内壁有最大速度的向内偏移和逆流。降主动脉中的速度剖面变钝。在髂动脉分叉顶点的下游,有涡度产生,但分支效应很快被血流的脉动性和血管壁的弹性所抑制。

相似文献

1
Velocity distribution along an elastic model of human arterial tree.沿人体动脉树弹性模型的速度分布。
J Biomech. 1985;18(9):703-15. doi: 10.1016/0021-9290(85)90025-9.
2
Experimental study of physiological pulsatile flow past valve prostheses in a model of human aorta--I. Caged ball valves.人体主动脉模型中通过人工瓣膜的生理性搏动血流的实验研究——I. 笼球瓣
J Biomech. 1985;18(10):763-72. doi: 10.1016/0021-9290(85)90051-x.
3
Three-dimensional visualization of velocity profiles in the ascending aorta in humans. A comparative study among normal aortic valves, St. Jude Medical and Starr-Edwards Silastic Ball valves.人体升主动脉中速度剖面的三维可视化。正常主动脉瓣、圣犹达医疗公司瓣膜和斯塔尔-爱德华兹硅橡胶球瓣之间的比较研究。
Int J Artif Organs. 1988 Jul;11(4):277-92.
4
Three-dimensional visualization of velocity fields downstream of six mechanical aortic valves in a pulsatile flow model.在脉动流模型中对六个机械主动脉瓣下游速度场的三维可视化。
J Biomech. 1988;21(8):647-61. doi: 10.1016/0021-9290(88)90202-3.
5
Blood flow patterns in the human aorta studied by magnetic resonance.通过磁共振研究人体主动脉中的血流模式。
Br Heart J. 1987 Oct;58(4):316-23. doi: 10.1136/hrt.58.4.316.
6
Steady flow development past valve prostheses in a model human aorta. I. Centrally occluding valves.人体主动脉模型中瓣膜假体周围的稳定血流发展。I. 中心阻塞瓣膜
J Biomech. 1983;16(12):1003-11. doi: 10.1016/0021-9290(83)90101-x.
7
The effects of non-Newtonian viscoelasticity and wall elasticity on flow at a 90 degrees bifurcation.非牛顿粘弹性和血管壁弹性对90度分叉处血流的影响。
Biorheology. 1986;23(4):359-70. doi: 10.3233/bir-1986-23405.
8
Blood velocity distribution in the human ascending aorta.人体升主动脉中的血流速度分布。
Circulation. 1987 Jul;76(1):90-100. doi: 10.1161/01.cir.76.1.90.
9
Pulsatile velocity measurements in a model of the human abdominal aorta under resting conditions.在静息状态下人体腹主动脉模型中的脉动速度测量。
J Biomech Eng. 1994 Aug;116(3):337-46. doi: 10.1115/1.2895740.
10
Effect of blood flow parameters on flow patterns at arterial bifurcations--studies in models.血流参数对动脉分叉处血流模式的影响——模型研究
Monogr Atheroscler. 1990;15:63-76.

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Heart Vessels. 1996;11(4):180-91. doi: 10.1007/BF02559990.
2
Velocity profiles in the ascending aorta in pigs: axial development and influence of changes in left ventricular contraction pattern.
Heart Vessels. 1993;8(4):194-202. doi: 10.1007/BF01744742.
3
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Med Biol Eng Comput. 1994 Jan;32(1):55-62. doi: 10.1007/BF02512479.