电阻抗图圆台模型的理论分析

Theoretical Analysis on the cone Frustum for Electrical Impedance Plethysmography

根据圆台的几何性质和趋肤效应,通过计算圆台的平均电流密度,导出了胸部圆台模型和肢体“对圆台”模型的阻抗容积之间的变化关系。

On the basis of the geometrical property of the frustum of a cone and the skin effect,the relation between changes in the impedance and volume of the cone frustum model for the thoracic circumference and of the“co- njoined”cone frnstum model for the limbs can be deduced by means of c- alculating the mean current density.