Determination of the elastic modulus of ascending thoracic aortic aneurysm at different ranges of pressure using uniaxial tensile testing Khalil Khanafer,

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Presentation transcript:

Determination of the elastic modulus of ascending thoracic aortic aneurysm at different ranges of pressure using uniaxial tensile testing Khalil Khanafer, PhD, Ambroise Duprey, MD, Mohammad Zainal, PhD, Marty Schlicht, PhD, David Williams, MD, Ramon Berguer, PhD, MD The Journal of Thoracic and Cardiovascular Surgery Volume 142, Issue 3, Pages 682-686 (September 2011) DOI: 10.1016/j.jtcvs.2010.09.068 Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 1 Principles of calculating the physiologic range, hypertensive range, and MEM. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 682-686DOI: (10.1016/j.jtcvs.2010.09.068) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 2 Comparison of the elastic modulus between greater curvature and lesser curvature locations in the (A) circumferential and (B) longitudinal orientations for various pressure ranges. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 682-686DOI: (10.1016/j.jtcvs.2010.09.068) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 3 Correlation between MEM and peak stress in the circumferential and longitudinal orientations. MEM, Maximum elastic modulus. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 682-686DOI: (10.1016/j.jtcvs.2010.09.068) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 4 Effect of the aneurysm diameter on peak stress in the circumferential and longitudinal orientations. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 682-686DOI: (10.1016/j.jtcvs.2010.09.068) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions

Figure 5 Effect of the aneurysm wall thickness on peak stress in the circumferential and longitudinal orientations. The Journal of Thoracic and Cardiovascular Surgery 2011 142, 682-686DOI: (10.1016/j.jtcvs.2010.09.068) Copyright © 2011 The American Association for Thoracic Surgery Terms and Conditions