A parametric geometry model of the aortic valve for subject-specific blood flow simulations using a resistive approach

Giorgia Pase*, Emiel Brinkhuis, Tanja de Vries, Jiri Kosinka, Tineke Willems, Cristobal Bertoglio

*Corresponding author for this work

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Cardiac valves simulation is one of the most complex tasks in cardiovascular modeling. Fluid–structure interaction is not only highly computationally demanding but also requires knowledge of the mechanical properties of the tissue. Therefore, an alternative is to include valves as resistive flow obstacles, prescribing the geometry (and its possible changes) in a simple way, but, at the same time, with a geometry complex enough to reproduce both healthy and pathological configurations. In this work, we present a generalized parametric model of the aortic valve to obtain patient-specific geometries that can be included into blood flow simulations using a resistive immersed implicit surface (RIIS) approach. Numerical tests are presented for geometry generation and flow simulations in aortic stenosis patients whose parameters are extracted from ECG-gated CT images.
Original languageEnglish
Pages (from-to)987–1002
JournalBiomechanics and Modeling in Mechanobiology
Early online date28-Feb-2023
Publication statusPublished - 2023

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