首页> 外文期刊>International Journal for Numerical Methods in Fluids >Reduced modelling of blood flow in the cerebral circulation: Coupling 1-D, 0-D and cerebral auto-regulation models
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Reduced modelling of blood flow in the cerebral circulation: Coupling 1-D, 0-D and cerebral auto-regulation models

机译:减少脑循环中的血流建模:一维,零维和脑自动调节模型的耦合

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摘要

Pulsatile blood flow in the cerebral circulation is simulated using a nonlinear, one-dimensional model of the arterial haemodynamics coupled in the time domain with lumped parameter and flow auto-regulation models of the perfusion of the microcirculation. A linear analysis of the coupling shows that a resistance equal to the characteristic impedance of the blood vessel is required at the inflow of a terminal windkessel model to avoid the generation of non-physiological wave reflections. The cerebral model suggests that the worst anatomical variation of the circle of Willis in terms of restoring normal cerebral flows after a sudden carotid occlusion is a circle without the first segment of the contralateral anterior cerebral artery.
机译:使用在时域内与集总参数和微循环灌注的流量自动调节模型耦合的非线性一维动脉血流动力学模型来模拟脑循环中的脉动血流。耦合的线性分析显示,在最终的风帆模型模型流入时,需要一个等于血管特征阻抗的电阻,以避免产生非生理波反射。该大脑模型表明,在突然的颈动脉闭塞后,恢复正常的脑流量方面,威利斯环的最差的解剖学变化是没有对侧前脑动脉第一段的环。

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