Cellular and animal experiments and computational fluid dynamics (CFD) have revealed that mechanisms of the initiation. growth and rupture of a cerebral aneurysm are related to hemodynamics. By direct observation of a cerebral aneurysm during craniotomy. thinning or thickening sites can be found on the aneurysmal wall. https://www.roneverhart.com/Neumann-KK-205-Supercardioid-Capsule-Head-Black-008654-p29875/