Computer assessment and modelling of left heart ventricle contractility based on kinetic model

Ventricles´ contractility is one of basic indicators of heart function. A Fourier spectrum of the function describing the variations of left chamber´s shape contains a useful diagnostic information about sector and time contractility pathologies. An examination of regional ventricles´ contractility leads to the detection of local cardiac dysfunctions like wall motion akinesis, diskinesis or hypokinesis. The authors present a mathematical model of left chamber shape variations within a single heart-beating cycle. The model is given in its direct and incremental forms. The methods of model coefficients evaluation based on the investigation of a series of cardiac images is described