Approaches to the Reconstruction of Numerical Simulation Oriented Patient-Specific Model of Aortic Arch Aneurysm

In order to make more precise analysis on hemodynamics in boundary layer, it is necessary to investigate the approaches to the reconstruction of numerical simulation oriented patient-specific model of aortic arch aneurysm that can perform particular meshing in boundary layer. A solid model of aortic arch aneurysm was reconstructed using CAD software Geomagic and Pro/E, and a simplified model of stent for the intervention of the aortic arch aneurysm was also created. These models were transferred to ANSYS software, and divided into several parts. Particular meshing was performed especially in boundary layer and around the stents so as to obtain the finite element model particularly suitable for numerical simulation of hemodynamics. Simulation was performed to verify the applicability of the constructed model. The results indicate the finite element model can be employed to simulate hemodynamics in aortic arch aneurysm treated with endovascular stent. The approaches of modeling were applicable and could be used as a reference for similar model reconstruction.