COMPUTER 3D SPATIALLY-ORIENTED MODELING OF CORONARYARTERIES HEMODYNAMICS ATTHEIR ATHEROSCLEROTIC DAMAGE AND SURGICAL RECONSTRUCTION | Issues of reconstructive and plastic surgery. 2015. № 1 (52).

COMPUTER 3D SPATIALLY-ORIENTED MODELING OF CORONARYARTERIES HEMODYNAMICS ATTHEIR ATHEROSCLEROTIC DAMAGE AND SURGICAL RECONSTRUCTION

The article describes methods allowing to create three-dimensional heart and coronary arteries models in vitro, shows the results of finite-element modeling of circulatory dynamics in the right coronary artery taking into account the stress-strain state of its wall in normal, atherosclerotic condition, and after coronary artery bypass grafting. The purpose of the research is to find the parameters of circulatory dynamics in the right coronary artery (normal, and with atherosclerotic disease) experimentally on the basis of computer 3D spatially-oriented models of the right coronary artery circulation. Material and methods. We chose 40 non-fixed hearts extracted in the course of autopsy on 40 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 right coronary artery using the method of cross-cuts, the computer № 1(52) март, 2015 Вопросы реконструктивной и пластической хирургии analysis of digital images in Adobe Photoshop and CorelDRAW application programs. Numerical modeling has been conducted with the use of SolidWorks (SP2.1, version for educational institutions) 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 right coronary artery wall (low shear stress at the wall, equivalent stress, and displacement vector modulus) in normal, atherosclerotic condition, and after surgical reconstruction. Conclusions. At the preoperative stage it is required to use of individualized computer 3D spatially-oriented modeling for choosing the rational method of the right coronary artery bypass, predicting localization of atherosclerotic process, and obtaining hemodynamic characteristics of the right coronary artery circulation in order to ensure adequate myocardial revascularization.

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Keywords

right coronary artery hemodynamics, coronary artery bypass grafting, finiteelement modeling, coronary heart disease, atherosclerosis, конечноэлементное моделирование, аортокоронарное шунтирование, гемодинамика, правая венечная артерия, атеросклероз, ишемическая болезнь сердца

Authors

Name	Organization	E-mail
Chelnokova N.O.		nachelnokova@yandex.ru
Ostrovsky N.V.
Golyadkina A.A.
Kirillova I.V.
Grishina O.A.
Albutov A.S.

Всего: 6

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