Estimation of dynamic parameters of cardiac ventricles

Authors:
YiQiang Xu;Qiu Guan;S. Y. Chen
Affiliations:
College of Information Engineering, Zhejiang University of Technology, Hangzhou, China;College of Information Engineering, Zhejiang University of Technology, Hangzhou, China;College of Information Engineering, Zhejiang University of Technology, Hangzhou, China
Venue:
MCBC'09 Proceedings of the 10th WSEAS international conference on Mathematics and computers in biology and chemistry
Year:
2009

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Abstract

This paper presents an approach to quantitative analysis of cardiac ventricular motions, which defines a new parameter named movement extents of myocardium, based on the point distribution model, to describe local cardiac motions. The algorithm finds the motion path of key points in a cardiac cycle via spline interpolation and the result is used to estimate their velocity and acceleration. Therefore, movement of key points is recovered throughout the cardiac cycle between time intervals to estimate the parameters of heart (including radial velocity, radial acceleration and cardiac stress and strain). We estimate these parameters by experiments to judge whether the motion area is driven with the other area. If the motion of the area is larger than adjacent area or less than the others, this area can be distinguished from normal ones.