Simulation of Hemodynamics in a Giant Cerebral Aneurysm

Results obtained by numerical simulation of blood flow dynamics in a giant aneurysm of the bifurcation of the basilar artery are presented. Detailed analysis of the flow structure in the dome of the aneurysm was carried out. A continuous jet was found to be formed inside the aneurysm, which, on interaction with the walls of the aneurysm, forms a zone of increased shear stresses. Evolution of the vortex flow during a single cardiac cycle was studied. The flow pattern changed significantly from a symmetric vortex flow to an established instability.