Intracranial aneurysms (IA) are a relatively common abnormality within the blood vessels of the brain that pose a risk for subarachnoid hemorrhage. Evaluating the risk of rupture of these aneurysms is an important clinical challenge. There is a field of study that seeks to connect the hemodynamic characteristics of blood flow within the aneurysm and its risk of rupture. While many studies have compared hemodynamics and risk of rupture, there is little information on how varying inflow conditions impacts these characteristics of interest. This study uses Particle Tracking Velocimetry (PTV) to inspect the fluid mechanical characteristics of flow within an idealized IA at two unique pulsatile frequencies of 180-bpm and 128-bpm. This study will compare these two test cases using inflow concentration, flow complexity, flow impingement zone, flow stability, and wall shear stress as the metrics for evaluation. These hemodynamic characteristics have been shown to be associated with risk of rupture and will be used to evaluate how changing the frequency impacts the risk of rupture.
