In this paper, we have constructed a three-dimensional abdominal aorta aneurysm model based on the CT-scan/angiography images. The inlet velocity is pulsatile and the simulation was done by means of finite volume analysis. The velocity and pressure contours were obtained for four different aneurysm sizes in three sections. The results indicate that the velocity decreases in aneurysm wall but pressure increases in that area. Furthermore, the increase of the aneurysm diameter increases the rupture risk due to high pressure in the wall. The shear stress is high in the start point and end of the aneurysm's curvature. Our study indicates that the aneurysm diameter is directly related to the pressure. High blood pressure could be a risk factor in artery rapture. Our model can serve as a useful tool for the study of the aortic aneurysms.
Relation between endoleak development and aneurysm diameter in patients with abdominal aorta aneurysm treated with endovascular repair
