Non-invasive Monitoring of Arterial Wall Impedance

The vascular system transports various substances necessary to maintain life, such as oxygen and nutrients, through arteries which exhibit funtional changes of constriction and dilation in response to various kinds of stimuli. In addition, the arteries react to organic changes, such as hardening and softening, according to aging and different physical conditions. Therefore, when dynamic characteristics of arteries can be measured quantitatively without unnatural stimulation, it is possible to estimate the internal condition of the body not only during surgical procedures, but also activities of daily living, such as physical training.

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