Hemodynamics is thought to play a role in the initiation and subsequent growth of intracranial aneurysms. Hemodynamics of an aneurysm is strongly related to its underlying morphology, specifically, the size and shape of the aneurysm sac and its contiguous vasculature [1]. Although the Computational Fluid Dynamic (CFD) simulations of transient blood flow seemingly provide in depth information of intra-aneurysmal hemodynamics, the simulations are often computationally expensive and demand additional measurements or assumptions such as the temporal variations in boundary conditions. When a population of aneurysms, with distinct sizes and shapes, are being studied in order to stratify them according to hemodynamics, it is conceivable that steady flow simulations are as effective as pulsatile flow simulations, especially when anatomical information is the only patient-specific information available. The objective of this study is to compare steady versus pulsatile flow simulations for a controlled hypothetical population of aneurysms with realistic variation in sac morphology and contiguous vasculature.

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