Left ventricle modeling by discrete polar Fourier transform using echocardiographic images

The three-dimensional and real-time representation of the left ventricle of the heart from echocardiographic images requires extracting many boundaries of the ventricle over a very short time. In order to reduce the computing times, to obtain more reliable algorithms and also to provide easy ways to describe the three-dimensional shape of the ventricle, a modeling of the left ventricle by polar Fourier transform is proposed. This modeling leads to significant information compression and to an easy physical description of the different parameters of the model. Finally, a method for measuring the isotropy of the contractions of the myocardium is described.