Zobrazeno 1 - 10
of 323
pro vyhledávání: '"Goubergrits Leonid"'
Autor:
Walczak Lars, Goubergrits Leonid, Hüllebrand Markus, Georgii Joachim, Falk Volkmar, Hennemuth Anja
Publikováno v:
Current Directions in Biomedical Engineering, Vol 6, Iss 1, Pp 133-41 (2020)
We present a novel approach to simulate deformation in aortic valve replacement scenarios with applications in operation planning and batch domain creation for large computational fluid dynamics studies of the aortic arch.
Externí odkaz:
https://doaj.org/article/0162e676b29e49ff9f8fa5ed0fbf0e6c
Autor:
Vellguth Katharina, Sündermann Simon, Escher Andreas, Bierewirtz Tim, Schmidt Tanja, Alogna Alessio, Kertzscher Ulrich, Goubergrits Leonid, Fraser Katharine H., Granegger Marcus
Publikováno v:
Current Directions in Biomedical Engineering, Vol 6, Iss 1, Pp 1501-10 (2020)
The aim of this work was the development of an isolated heart setup to delineate the interactions between intraventricular flow features, hemodynamic parameters and mechano-energetics after certain mitral valve therapies. Five porcine hearts were exp
Externí odkaz:
https://doaj.org/article/64c2f00623914e2ba4cc52f6790c7ace
Autor:
Stiehm Michael, Brandt-Wunderlich Christoph, Siewert Stefan, Schmitz Klaus-Peter, Grabow Niels, Goubergrits Leonid, Kühne Titus, Poon Eric K. W., Ooi Andrew, Barlis Peter
Publikováno v:
Current Directions in Biomedical Engineering, Vol 6, Iss 3, Pp 78-81 (2020)
Modern technologies and methods such as computer simulation, so-called in silico methods, foster the development of medical devices. For accelerating the uptake of computer simulations and to increase credibility and reliability the U.S. Food and Dru
Externí odkaz:
https://doaj.org/article/c22ccd023c4a4a319f78c935001a79e8
Numerical investigation of the impact of branching vessel boundary conditions on aortic hemodynamics
Publikováno v:
Current Directions in Biomedical Engineering, Vol 3, Iss 2, Pp 321-324 (2017)
CFD has gained significant attention as a tool to model aortic hemodynamics. However, obtaining accurate patient-specific boundary conditions still poses a major challenge and represents a major source of uncertainties, which are difficult to quantif
Externí odkaz:
https://doaj.org/article/b9dbdec7dc804afcb5332bb64ae9dacf
Autor:
Osman Jan, Großmann Friederike, Brosien Kay, Kertzscher Ulrich, Goubergrits Leonid, Hildebrandt Thomas
Publikováno v:
Current Directions in Biomedical Engineering, Vol 2, Iss 1, Pp 617-621 (2016)
Anterior rhinomanometry is the current gold standard for the objective assessment of nasal breathing by determining the nasal resistance. However, computational fluid dynamics would allow spatially and temporally well- resolved investigation of addit
Externí odkaz:
https://doaj.org/article/ff3ffd62001548c19765772eb73f7275
Autor:
Katz, Sarah, Caiazzo, Alfonso, Moreau, Baptiste, Wilbrandt, Ulrich, Brüning, Jan, Goubergrits, Leonid, John, Volker
Numerical simulations of pulsatile blood flow in an aortic coarctation require the use of turbulence modeling. This paper considers three models from the class of large eddy simulation (LES) models (Smagorinsky, Vreman, $\boldsymbol{\sigma}$-model) a
Externí odkaz:
http://arxiv.org/abs/2208.14217
Publikováno v:
BioMedical Engineering OnLine, Vol 5, Iss 1, p 39 (2006)
Abstract Background Clinical studies suggest that local wall shear stress (WSS) patterns modulate the site and the progression of atherosclerotic lesions. Computational fluid dynamics (CFD) methods based on in-vivo three-dimensional vessel reconstruc
Externí odkaz:
https://doaj.org/article/c52b246c317642538bb870f76d676250
The Hodge decomposition provides a very powerful mathematical method for the analysis of 2D and 3D vector fields. It states roughly that any vector field can be $L^2$-orthogonally decomposed into a curl-free, divergence-free, and a harmonic field. Th
Externí odkaz:
http://arxiv.org/abs/1911.12173
Autor:
Karabelas, Elias, Gsell, Matthias A. F., Augustin, Christoph M., Marx, Laura, Neic, Aurel, Prassl, Anton J., Goubergrits, Leonid, Kuehne, Titus, Plank, Gernot
Publikováno v:
Frontiers in Physiology, 9(5), pages 1-20, 2018
Computational fluid dynamics (CFD) models of blood flow in the left ventricle (LV) and aorta are important tools for analyzing the mechanistic links between myocardial deformation and flow patterns. Typically, the use of image-based kinematic CFD mod
Externí odkaz:
http://arxiv.org/abs/1901.05339
Autor:
Gsell, Matthias A. F., Augustin, Christoph M., Prassl, Anton J., Karabelas, Elias, Fernandes, Joao F., Kelm, Marcus, Goubergrits, Leonid, Kuehne, Titus, Plank, Gernot
Publikováno v:
International Journal for Numerical Methods in Biomedical Engineering, 34(12), pages e3147, 2018
Introduction: Stenotic aortic valve disease (AS) causes pressure overload of the left ventricle (LV) that may trigger adverse remodeling and precipitate progression towards heart failure (HF). As myocardial energetics can be impaired during AS, LV wa
Externí odkaz:
http://arxiv.org/abs/1901.05337