Research Of Standard 3D Model Of Segment For Dynamic Mapping

Cardiac diseases have the highest death rate that is an upmost sickness between mortality and population. In the past twenty years, implanting artificial pacemakers is an effective interventional treating means. The evaluation of the artificial pacemakers from hemodynamics and cardio-electrophysiology is relatively mature, while that from myocardial mechanics is needed. In this thesis, a 3D mechanical mapping model of left ventricle is developed to study the mechanical behavior of paced heart myocardium.In this paper, a type of standard 3D model is proposed for understanding the myocardial mechanical behavior of paced heart. The model which ignores anatomical structure of left ventricle (LV) is considered as a reference space for reducing individual differences among different LVs. We pay attention to the local motion of myocardium by using the conception of myocardium segments. The segments serve as the bridge of the myocardial mechanical behavior among different LVs. In this paper, the 3D models are built based on 16 segments division method proposed by the American Supersonic Echocardiogram (ASE). Every segment model is divided into 3 sub-layers for the analyses of velocity gradient between endocardium and epicardium. A platform based upon Direct3D API is developed for dynamic mapping and LV segments observing.First , we utilize the thin-plate spline interpolation method to actualize the function for registering Doppler Tissue Velocity (DTV) image to cross section image of the model,...