ESTIMATION OF GEOMETRICAL PARAMETERS MODIFICATION FOR MODELING OF ELECTRICAL ACTIVITY OF HEART 

Kuz'min Andrey Viktоrоviсh, сandidate оf teсhniсal sсienсes, assосiate рrоfessоr, sub-deрartment оf infоrmatiоn and соmрuting systems, Рenza State University (40 Krasnaya street, Рenza, Russia), E-mail: fliсkerlight@inbоx.ru 

004.9; 621.317; 612.172.4 

10.21685/2307-5538-2019-3-8 

Background. The aim of this research is the development of method of dynamic modification of heart 3D model geometrical parameters during the process of electrical activity of heart on the base of multi-dipole model of equivalent electric generator of heart proposed by L.I. Titomir and non-invasive electrocardiographic data.
Materials and methods. Theoretical and methodological base of the investigation consists of fundamental works in the areas of equivalent electrical generator of the heart and interrelation of electrocardiographic parameters of heart. 3D models methods based on reference points that schematically represent heart and spatial location of dipoles and geometrical modeling methods in general are used in the research.
Results of the work. In the current work the method of dynamic modification of geometrical parameters of model of heart on the base of electrocardiographic data is described. The process of estimating the dynamic modification of geometric parameters of model of electrical activity of the heart. The author determined the values of electric potential on the surface of the model of the heart. The values of modification of points of spatial location of dipoles are determined on the base of simplified electromechanical model. Computational experiment with electrocardiographic data and schematic 3D model of dipole spatial location is fulfilled. The results of the computational experiment showed the possibility of solving the task.
Conclusions. In the paper the steps of estimation of parameters dipoles location and modification of parameters of geometric model are considered, the step of estimation of values of action transmembrane potential on the base of dipole moments is experimentally demonstrated. The results allow developing the method of dynamic modification of geometric model of heart for application as a part of software component of non-invasive diagnostic and simulation training systems. 

electrical activity of a heart, dipole moments, multi-dipole model, 3D model of a heart, geometrical parameters