Fig. 13

Giant fusiform basilar aneurysm: geometric and flow boundary conditions, and CFD predicted velocity fields for three different flow conditions. a Geometric boundaries as defined by Contrast-Enhanced MRA, b Flow boundary conditions from a slice transverse to a vertebral artery. c Velocity field with a high ratio of flow in the right vertebral artery relative to that in the left; d Velocity field with equal flow in each vertebral artery; and e Velocity field with a low ratio of flow in the right vertebral artery relative to that in the left