Efficiency of endovascular coiling on the evolution of MCA cerebral aneurysm by hemodynamic analysis: Computational study

In this paper, the change in the hemodynamic factors associated with the rupture risk in the process of aneurysm growth is fully investigated. The main focus of this computational work is to reveal the changes in the blood flow parameters of wall shear stress (WSS), oscillatory shear index (OSI) and pressure to offer good insight into the selection of an efficient technique for the treatment. This work also examines the efficacy of coiling in the treatment of the middle cerebral artery (MCA) aneurysm in different stages of the growth process. The blood flow is modeled by solving the Navier–Stokes equation with the non-Newtonian Casson model. The results of the hemodynamic analyses show that the growth of the MCA aneurysm would reduce the WSS over the sac surface while the evolution of the aneurysm increases the OSI value.