Analysis of the data of morphometry of aortic casts, aortography at different pressures, and multispiral computer tomography of the aorta with contrast and normal pulse pressure showed that geometric configuration of the flow channel of the aorta during the whole cardiac cycle corresponded to the conditions of self-organization of tornado-like quasipotential flow described by exact solutions of the Navier-Stokes equation and continuity of viscous fluid typical for this type of fluid flows. Increasing pressure in the aorta leads to a decrease in the degree of approximation of the channel geometry to the ratio of exact solution and increases the risk of distortions in the structure of the flow. A mechanism of evolution of tornado-like flow in the aorta was proposed.
View Article and Find Full Text PDFNew approach to intracardiac blood flow condition analysis based on geometric parameters of left ventricle flow channel has been suggested. Parameters, that used in this method, follow from exact solutions of nonstationary Navier-Stocks equations for selforganized tornado-like flows of viscous incompressible fluid. The main advantage of this method is considering dynamic anatomy of intracardiac cavity and trabeculae relief of left ventricle streamlined surface, both registered in a common mri-process, as flow condition indicator.
View Article and Find Full Text PDFMany historical facts, describing exploitation and discrimination of research subjects which have been justified by the importance of research aims, are known. Today the protection of the rights and safety of persons involved in biomedical research (research subjects) is the necessary precondition for contemporary biomedical researches and correspondingly, development of the science. An integral responsibility of researchers working in the field of biomedicine is to ensure the protection of safety and rights of research subjects.
View Article and Find Full Text PDF