Finite Time Lyapunov Exponents (FTLEs) are a powerful means to infer characteristic features of the flow that cannot be revealed by other Eulerian criteria. Recently FTLEs are becoming popular also in the medical context, for instance in the analysis of vascular flow measured by means of Magnetic Resonance Imaging. However, many of the FTLE experimental works are based only on two-dimensional velocity fields, moreover those computed on in-vivo data cannot be obtained under controlled and repeatable conditions. Here we present the 3D FTLE evolution inside a Left Ventricle (LV) laboratory model mimicking physiological human conditions. The investigation of FTLE fields highlights distinctive features of the cardiac flow and gives an insight on the physiological development of the Lagrangian Coherent Structures (LCS) that optimize the LV refill.

3D Finite Time Lyapunov Exponents in a left ventricle laboratory model / M. G., Badas; S., Espa; Fortini, Stefania; Querzoli, Giorgio. - In: EPJ WEB OF CONFERENCES. - ISSN 2100-014X. - STAMPA. - 92:(2014). (Intervento presentato al convegno 9th International Conference on Experimental Fluid Mechanics tenutosi a Cesky Krumlov; CZECH REPUBLIC).

3D Finite Time Lyapunov Exponents in a left ventricle laboratory model

FORTINI, STEFANIA;QUERZOLI, GIORGIO
2014

Abstract

Finite Time Lyapunov Exponents (FTLEs) are a powerful means to infer characteristic features of the flow that cannot be revealed by other Eulerian criteria. Recently FTLEs are becoming popular also in the medical context, for instance in the analysis of vascular flow measured by means of Magnetic Resonance Imaging. However, many of the FTLE experimental works are based only on two-dimensional velocity fields, moreover those computed on in-vivo data cannot be obtained under controlled and repeatable conditions. Here we present the 3D FTLE evolution inside a Left Ventricle (LV) laboratory model mimicking physiological human conditions. The investigation of FTLE fields highlights distinctive features of the cardiac flow and gives an insight on the physiological development of the Lagrangian Coherent Structures (LCS) that optimize the LV refill.
2014
9th International Conference on Experimental Fluid Mechanics
Mechanics; Physics
04 Pubblicazione in atti di convegno::04c Atto di convegno in rivista
3D Finite Time Lyapunov Exponents in a left ventricle laboratory model / M. G., Badas; S., Espa; Fortini, Stefania; Querzoli, Giorgio. - In: EPJ WEB OF CONFERENCES. - ISSN 2100-014X. - STAMPA. - 92:(2014). (Intervento presentato al convegno 9th International Conference on Experimental Fluid Mechanics tenutosi a Cesky Krumlov; CZECH REPUBLIC).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/652824
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