Standard snake models of closed curve evolution, pertaining to the Level-Set Method have been implemented to characterize the internal ventricular area over time. A newer dynamic approach to the well-known static variational method for the time-series medical echocardiographic images, which is suitable to enhance ventricular edge and regularize initial data for curve evolution, is presented, and a graphic software applications for synchronization between cardiac movement and electric signals (ECG) are developed. Here we present results for different choices of parameter values, both terms of threshold values for the front evolution and for regularity of the contours in the minimization of the functional.