Abstract
We present a method for predicting the wall stress in a class of cerebral aneurysms. The method hinges on an inverse formulation of the elastostatic equilibrium problem; it takes as the input a deformed configuration and the corresponding pressure, and predicts the wall stress in the given deformed state. For a membrane structure, the inverse formulation possesses a remarkable feature, that is, it can practically determine the wall tension without accurate knowledge of the wall elastic properties. In this paper, we present a finite element formulation for the inverse membrane problem and perform material sensitivity studies on idealized lesions and an image-based cerebral aneurysm model.
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Lu, J., Zhou, X. & Raghavan, M.L. Inverse method of stress analysis for cerebral aneurysms. Biomech Model Mechanobiol 7, 477–486 (2008). https://doi.org/10.1007/s10237-007-0110-1
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DOI: https://doi.org/10.1007/s10237-007-0110-1