Finite Element Stent Modeling for the Postoperative Analysis of Transcatheter Aortic Valve Implantation

This study evaluates element size selection and quantitatively investigates the choice of a linear elastic constitutive model for the Nitinol stent under physiological loading conditions. It is shown that this simplification leads to reliable results and enables a huge reduction in computation time. Further, the procedure used to compensate for noisy postoperative CT data is tested by adding artificial noise. It is concluded that for physiologically relevant loading ranges, the procedure yields convergent results and successfully eliminates the influence of the noise.
Source: Journal of Medical Devices, Transactions of the ASME - Category: Medical Equipment Source Type: research