Hemodynamic Forces in the Progression of Intracranial Aneurysm Change as Assessed Using MR-Based Methods

David A. Saloner¹, Evan Kao², Gabriel Acevedo-Bolton², Andrew Lee², Petter Dyverfeldt², Vitaliy L. Rayz²

MR methods can be used to assess changes in aneurysm morphology over time. In addition vascular geometry and inlet flow conditions that are needed for Computational Fluid Dynamics can be determined using MRA and MR velocimetry. These methods were used in the evaluation of 78 aneurysms that were followed over time. CFD predictions indicate that there is an increased rate of growth in aneurysms where a large fraction of the aneurysm surface is exposed to low wall shear stress.