Three-Dimensional Computational Simulation of Bypassed Aortic Dissection

Abstract

To investigate the influence of bypassing treatment on the hemodynamic parameters of aortic dissection and the feasibility of this therapeutic approach in clinical application, idealized three-dimensional geometric models of DeBakey III aortic dissection with a blind lumen and its bypassing treatment were constructed with the software of SolidWorks 2007. Then, numerical simulation was performed utilizing the software of ANSYS 11.0, and the results were analyzed. The velocity of blood flow and the pressure at the entrance area of false lumen and in the false lumen are both less than those before the operation. Bypassing is an effective surgery for the treatment of DeBakey III dissection. It can effectively reduce the pressure of aortic arch and ease the impulsion and stress of blood flow on the pathological dissection. It can also alleviate the propagation, prevent the rupture, and promote the healing of dissection.

Prefailure and Failure Mechanics of the Porcine Ascending Thoracic Aorta: Experiments and a Multiscale Model

“…Experimental studies have investigated the mechanical failure of aortic media [6,9,10], but only a few theoretical models have attempted to emulate this response [11][12][13]. The most notable work to date, by Gasser and Holzapfel [12], employs constitutive FE modeling with two independent continuous and cohesive zones to model the fiber network and ground matrix, respectively.…”

Numerical simulations of flow through the aorta using both ideal and realistic geometrical models

“…The three branches at the top of the aortic arch were removed as the focus of the present study is on the effect of curvature and tapering. On the other hand, the ideal geometries (constant diameter, tapering and curved) were drawn using SolidWorks 2008 (SolidWorks Corp.), with their parameters taken to represent normal aorta [8,10]. Tetrahedral elements were assigned to each of the ideal geometry using Meshing in ANSYS CFD (ANSYS, Inc.).…”