Abstract
An Abdominal Aortic Aneurysm (AAA) is an enlargement of the infrarenal aorta, a serious condition whose clinical treatment requires assessing its risk of rupture. This chapter reviews the current state of the Biomechanical Rupture Risk Assessment (BRRA), a non-invasive diagnostic method to calculate such AAA rupture risk, and emphasizes on constitutive modeling of AAA tissues. Histology and mechanical properties of the normal and aneurysmatic walls are summarized and related to proposed constitutive descriptions. Models for the passive vessel wall as well as their adaptation in time are discussed. Reported clinical BRRA validation studies are summarized and their clinical relevance is discussed. Despite open problems in AAA biomechanics, like robust modeling vascular tissue adaptation to mechanical and biochemical environments, a significant body of current validation evidence suggests integrating the BRRA method into the clinical decision-making process.
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Gasser, T.C. (2018). The Biomechanical Rupture Risk Assessment of Abdominal Aortic Aneurysms—Method and Clinical Relevance. In: Wriggers, P., Lenarz, T. (eds) Biomedical Technology. Lecture Notes in Applied and Computational Mechanics, vol 84. Springer, Cham. https://doi.org/10.1007/978-3-319-59548-1_13
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