Abstract
The viscoelastic property of an isolated canine left ventricle is identified by a curve fit technique. The left ventricle is well modelled by using three kinds of mass-damper-spring systems with the six degrees of freedom, that is, Voigt, Maxwell and three element models. The experimental data of the transfer function were obtained by applying a sinusoidal excitation to a point of the exicordium and detecting the output displacement at the contralateral position. The transfer function of a normal ventricle has a single peak configuration during 30 and 80 Hz, while that of the ventricle with a regional ischemia has a double peak pattern. It is found that the values of damping coefficients and spring constants depend on the state of the myocardium.
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