MORPHOLOGICAL BASIS OF FINITE-ELEMENT MODELING ОF CORONARY ARTERIES HEMODYNAMICS

The results of finite-element modeling of hemodynamics in the left coronary artery with the stress-strain state of its walls in this article are reflected. Material and methods. We chose 228 non-fixed hearts extracted in the course of autopsy on 228 men’s corpses age 31-40 as objects. We used the following methods of research: organometry and angiometry, original method of polychrome filling of arteries with cold masses and the method of filling human heart in vitro with gelatin, methods of constructing 3D computer models of heart and the left coronary artery using the method of cross-cuts, the computer analysis of digital images in Adobe Photoshop and CorelDRAW application programs. Numerical modeling has been conducted with the use of SolidWorks (SP2.1.) and ANSYS Multiphysics software. Results. The results obtained prove that the finite-element modeling allows studying circulatory dynamics rates (pressure, blood flow velocity vectors, the total volumetric blood flow) taking into account stress-strain state of the left coronary artery wall (low shear stress at the wall, equivalent stress, and displacement vector modulus) in normal, atherosclerotic condition. Conclusions. Mathematical modeling of hemodynamics may take into account the individual characteristics of the morphological structure of the left coronary artery circulation of the patient.

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