The impact of model assumptions on results of computational mechanics in abdominal aortic aneurysm Christian Reeps, MD, Michael Gee, PhD, Andreas Maier,

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Presentation transcript:

The impact of model assumptions on results of computational mechanics in abdominal aortic aneurysm Christian Reeps, MD, Michael Gee, PhD, Andreas Maier, Manuela Gurdan, MD, Hans-Henning Eckstein, MD, Wolfgang A. Wall, PhD Journal of Vascular Surgery Volume 51, Issue 3, Pages 679-688 (March 2010) DOI: 10.1016/j.jvs.2009.10.048 Copyright © 2010 Society for Vascular Surgery Terms and Conditions

Fig 1 Horizontal cut through a three-dimensional reconstructed abdominal aortic aneurysm (Female59) prepared for simulation demonstrates computational grid density of the aneurysm wall and the intraluminal thrombus. Journal of Vascular Surgery 2010 51, 679-688DOI: (10.1016/j.jvs.2009.10.048) Copyright © 2010 Society for Vascular Surgery Terms and Conditions

Fig 2 An exemplary illustration shows equilibrium and blood pressure load using a simple cantilever beam. Equilibrium and load are shown (a) with respect to the known reference geometry obtained from imaging (LinGeom and NonOrthPressure) and (b) with respect to the unknown deformed geometry. The pressure load is shown with respect to the reference geometry (NonLinGeom and NonOrthPressure). (c) Equilibrium and true pressure load are shown with respect to the unknown deformed geometry (NonLinGeom and OrthPressure). Journal of Vascular Surgery 2010 51, 679-688DOI: (10.1016/j.jvs.2009.10.048) Copyright © 2010 Society for Vascular Surgery Terms and Conditions

Fig 3 Analyzed abdominal aortic aneurysms (AAA) with exemplarily different morphology. Left to right, Sacciform (Male40), fusiforme (Female59), fusiform (Male42), and large fusiforme symptomatic AAA (Male39). Journal of Vascular Surgery 2010 51, 679-688DOI: (10.1016/j.jvs.2009.10.048) Copyright © 2010 Society for Vascular Surgery Terms and Conditions

Fig 4 Simulation results for models 1 to 6 for the Male40 abdominal aortic aneurysm (AAA), as described in Table III and in Methods. Left, Color indicates deformation in mm. Center, Color indicates wall stress (von Mises stress; Pa). Right, Coronal cut through AAA where color indicates wall stress (von Mises stress; Pa). Journal of Vascular Surgery 2010 51, 679-688DOI: (10.1016/j.jvs.2009.10.048) Copyright © 2010 Society for Vascular Surgery Terms and Conditions

Fig 5 Simulation results for models 1 to 6 for the Female59 abdominal aortic aneurysm, as described in Table III and in Methods. Left, Color indicates deformation in mm. Center, Color indicates wall stress (von Mises stress; Pa). Right, Coronal cut through AAA where color indicates wall stress (von Mises stress; Pa). Journal of Vascular Surgery 2010 51, 679-688DOI: (10.1016/j.jvs.2009.10.048) Copyright © 2010 Society for Vascular Surgery Terms and Conditions

Fig 6 Simulation results for models 1 to 6 for the Male39 abdominal aortic aneurysm (AAA), as described in Table III and in Methods. Left, Color indicates deformation in mm. Center, Color indicates wall stress (von Mises stress; Pa). Right, Coronal cut through AAA where color indicates wall stress (von Mises stress; Pa). Journal of Vascular Surgery 2010 51, 679-688DOI: (10.1016/j.jvs.2009.10.048) Copyright © 2010 Society for Vascular Surgery Terms and Conditions

Fig 7 Simulation results for models 1 to 7 for the Male42 abdominal aortic aneurysm (AAA) as described in Table III and in Methods. Left, Color indicates deformation in mm. Center, Color indicates wall stress (von Mises stress; Pa). Right, Coronal cut through AAA where color indicates wall stress (von Mises stress; Pa). Journal of Vascular Surgery 2010 51, 679-688DOI: (10.1016/j.jvs.2009.10.048) Copyright © 2010 Society for Vascular Surgery Terms and Conditions