目的描述农村40岁以上人群的脑血管血液动力学参数的分布特征。

Objective To describe the characteristics of cerebral vascular hemodynamic indexes (CVHI) in a rural population over 40 years.

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因此，肺动脉狭窄对血液流动状态及相关血液动力学参数产生了重要的影响。

Thus, the stenosis of pulmonary artery resulted in important effect on the blood flow condition and the corresponding blood dynamic parameters.

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背景与目的：我们探讨了普通人群中经颅多谱勒血液动力学参数与卒中风险的相关性。

Background and Purpose - we explored the association between transcranial Doppler hemodynamic parameters and the risk of stroke in the general population.

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