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JOURNALS // Prikladnaya Mekhanika i Tekhnicheskaya Fizika // Archive

Prikl. Mekh. Tekh. Fiz., 2018 Volume 59, Issue 6, Pages 5–14 (Mi pmtf496)

This article is cited in 5 papers

On the impact of flow-diverters on the hemodynamics of human cerebral aneurysms

D. V. Parshinab, Yu. O. Kuyanovaab, D. S. Kislitsinc, U. Windbergerd, A. P. Chupakhinab

a Lavrentyev Institute of Hydrodynamics of Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia
b Novosibirsk National Research State University, Novosibirsk, 630090, Russia
c Meshalkin National Medical Research Center, Novosibirsk, 630055, Russia
d Center for Biomedical Research Vienna Medical University, Vienna, 1090, Austria

Abstract: The impact of flow-diverters used in the treatment of cerebral aneurysm on human brain hemodynamics was evaluated qualitatively and quantitatively. Numerical simulation of flow-diverter placement in cerebral vessels with aneurysms for the case history of a real patient was carried out with the commercial ANSYS 17.2 package, using different (Newtonian and non-Newtonian) hydrodynamic models of blood rheology in different parts of the vessel and aneurysm, according to experimental data. It is shown that after flow-diverter placement, the blood flow through the artery segment containing the aneurysm neck decreases, resulting in a redistribution of the cerebral blood flow, which becomes close to a healthy bloodstream. Changes in wall tangential stresses in the flow-diverter region are indicative of possible aneurysm recanalization.

Keywords: cerebral aneurysm, flow-diverter, brain hemodynamics, reconstruction of DICOM images, non-Newtonian blood rheology.

UDC: 51-76, 612.133

Received: 26.03.2018

DOI: 10.15372/PMTF20180601


 English version:
Journal of Applied Mechanics and Technical Physics, 2018, 59:6, 963–970

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© Steklov Math. Inst. of RAS, 2024