L. Speelman, E. M. H. Bosboom, G. W. H. Schurink, F. A. M. V. I

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Patient-Specific AAA Wall Stress Analysis: 99-Percentile Versus Peak Stress L. Speelman, E.M.H. Bosboom, G.W.H. Schurink, F.A.M.V.I. Hellenthal, J. Buth, M. Breeuwer, M.J. Jacobs, F.N. van de Vosse European Journal of Vascular and Endovascular Surgery Volume 36, Issue 6, Pages 668-676 (December 2008) DOI: 10.1016/j.ejvs.2008.09.007 Copyright © 2008 European Society for Vascular Surgery Terms and Conditions

Figure 1 The 3D active object of the centerline (left), the lumen (middle) and the AAA wall (right). European Journal of Vascular and Endovascular Surgery 2008 36, 668-676DOI: (10.1016/j.ejvs.2008.09.007) Copyright © 2008 European Society for Vascular Surgery Terms and Conditions

Figure 2 Left: Failure of the automatic segmentation into the vena cava (thin solid line) and manual corrected contour (solid dotted line). Right: Corrected contour. European Journal of Vascular and Endovascular Surgery 2008 36, 668-676DOI: (10.1016/j.ejvs.2008.09.007) Copyright © 2008 European Society for Vascular Surgery Terms and Conditions

Figure 3 Posterior view of the stress distributions for two patients for operators 1, 2 and 3. European Journal of Vascular and Endovascular Surgery 2008 36, 668-676DOI: (10.1016/j.ejvs.2008.09.007) Copyright © 2008 European Society for Vascular Surgery Terms and Conditions

Figure 4 The mean and standard deviation of the peak stress and 99-percentile stress for the 5 analyses of all patients as determined by operator 1 (left) and 2 (right). European Journal of Vascular and Endovascular Surgery 2008 36, 668-676DOI: (10.1016/j.ejvs.2008.09.007) Copyright © 2008 European Society for Vascular Surgery Terms and Conditions

Figure 5 Bland–Altman plots for operators 1, 2 and 3 (- - indicates one standard deviation). European Journal of Vascular and Endovascular Surgery 2008 36, 668-676DOI: (10.1016/j.ejvs.2008.09.007) Copyright © 2008 European Society for Vascular Surgery Terms and Conditions

Figure 6 Linear regression between the 99-percentile stress and the maximum diameter (left, - - indicates one standard deviation) and the residuals of the regression model, normalized to the standard deviation of the residuals (right). European Journal of Vascular and Endovascular Surgery 2008 36, 668-676DOI: (10.1016/j.ejvs.2008.09.007) Copyright © 2008 European Society for Vascular Surgery Terms and Conditions

Figure 7 A–E ‘high stress AAAs’ with stresses more than one standard deviation above the regression model. F–I ‘low stress AAAs’ with stresses below the regression model. European Journal of Vascular and Endovascular Surgery 2008 36, 668-676DOI: (10.1016/j.ejvs.2008.09.007) Copyright © 2008 European Society for Vascular Surgery Terms and Conditions