摘要
脑血管疾病和脑循环动力学异常改变密切相关．脑循环系统和体循环系统具有不完全相同的血液动力学特性．因此，临床上迫切需要一种既能反映脑循环的基本特性，又容易从中分析脑血管动力学参数的力学模型．本文在Ｗｉｌｉｓ环定常流模型的基础上，建立了描述脑循环血液脉动特性的集中参数模型，归结出了模型控制方程及求解方法．通过实例计算发现：理论计算结果和实验检测数据相当吻合，说明模型是符合生理实际的．
The cerebravascular disease is very related with the abnormal hemodynamic state of cerebral circulation. There are some different characteristics between the cerebral circulation and the systemic circulation of human.In clinical application, it is necessary to set up a hemodynamics model which not only has the principal characteristics of the cerebral circulation but also can be used easily to analyse the cerebravascular dynamics index(CVDI). According to the steady flow model of Willis circulation, we set up a lumped parameters model for analysing the cerebral circulation pulstile flow, and get its governed equations as well as its solving method. Preliminary results of our experiment show that the theoretical conclusion agree with the experiment data. It reveals that the present analysis is consistent with the physiological phenomena, and may offer a delicate hemodynamic model for cerebral circulation research.
出处
《力学学报》
EI
CSCD
北大核心
1996年第3期336-346,共11页
Chinese Journal of Theoretical and Applied Mechanics
关键词
脑循环
脉动流
血液动力学模型
cerebral circulation, pulsatile flow, hemodynamics model, lumped parameters
