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Local wall thickness in finite element models improves prediction of abdominal aortic aneurysm growth  Eric K. Shang, MD, Derek P. Nathan, MD, Edward.

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Presentation on theme: "Local wall thickness in finite element models improves prediction of abdominal aortic aneurysm growth  Eric K. Shang, MD, Derek P. Nathan, MD, Edward."— Presentation transcript:

1 Local wall thickness in finite element models improves prediction of abdominal aortic aneurysm growth  Eric K. Shang, MD, Derek P. Nathan, MD, Edward Y. Woo, MD, Ronald M. Fairman, MD, Grace J. Wang, MD, Robert C. Gorman, MD, Joseph H. Gorman, MD, Benjamin M. Jackson, MD  Journal of Vascular Surgery  Volume 61, Issue 1, Pages (January 2015) DOI: /j.jvs Copyright © 2015 Society for Vascular Surgery Terms and Conditions

2 Fig 1 A, Digital Imaging and Communications in Medicine (DICOM) image with segmentation into luminal (green), inner arterial (red), and outer adventitial (blue) surfaces. B, Three-dimensional reconstruction, cut at corresponding level, with stress plot overlaid. Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2015 Society for Vascular Surgery Terms and Conditions

3 Fig 2 A, Calculated wall-thickness map overlaid onto aortic geometry. B, Stress contour map derived from uniform wall thickness (UWT) aortic geometry. C, Stress contour map derived from variable wall thickness (VWT) aortic geometry. Note the colocalization of areas with low wall thickness and high peak wall stress (PWS), especially in the aneurysm neck. Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2015 Society for Vascular Surgery Terms and Conditions

4 Fig 3 Plot showing relationship between peak wall stress (PWS) derived from uniform wall thickness (UWT) finite element analysis (FEA) and aneurysm expansion rate. Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2015 Society for Vascular Surgery Terms and Conditions

5 Fig 4 Plot showing relationship between peak wall stress (PWS) derived from variable wall thickness (VWT) finite element analysis (FEA) and aneurysm expansion rate. Journal of Vascular Surgery  , DOI: ( /j.jvs ) Copyright © 2015 Society for Vascular Surgery Terms and Conditions

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