A computational human mitral valve model showed good agreement with in vivo magnetic resonance images for flow rate and valve configurations, identifying higher stresses in the anterior leaflet.
A novel computational model of the human mitral valve successfully mimics in vivo dynamics, providing insights into leaflet stresses and chordae function not obtainable by in vivo measurements.
A computational human mitral valve (MV) model under physiological pressure loading is developed using a hybrid finite element immersed boundary method, which incorporates experimentally-based constitutive laws in a three-dimensional fluid-structure interaction framework. A transversely isotropic material constitutive model is used to characterize the mechanical behaviour of the MV tissue based on recent mechanical tests of healthy human mitral leaflets. Our results show good agreement, in terms of the flow rate and the closing and opening configurations, with measurements from in vivo magnetic resonance images. The stresses in the anterior leaflet are found to be higher than those in the posterior leaflet and are concentrated around the annulus trigons and the belly of the leaflet. The results also show that the chordae play an important role in providing a secondary orifice for the flow when the valve opens. Although there are some discrepancies to be overcome in future work, our simulations show that the developed computational model is promising in mimicking the in vivo MV dynamics and providing important information that are not obtainable by in vivo measurements.
Gao et al. (Wed,) conducted a other in Mitral valve dynamics. Computational human mitral valve model vs. In vivo magnetic resonance images was evaluated on Flow rate, closing and opening configurations, and leaflet stresses. A computational human mitral valve model showed good agreement with in vivo magnetic resonance images for flow rate and valve configurations, identifying higher stresses in the anterior leaflet.