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Cited by 108 publications
(76 citation statements)
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References 28 publications
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“…27 More recent work in our laboratory has allowed the improvement of AAA stress estimation technique by the incorporation of experimentally determined tissue anisotropy into our models. 47,59 Kyriacou and Humphrey showed that the stress distribution in cerebral aneurysms is markedly different when incorporating an anisotropic model versus a simplified isotropic model, 60 and we have made similar preliminary observations for AAA.…”
Section: Estimation Of Aaa Wall Stresssupporting
confidence: 78%
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“…27 More recent work in our laboratory has allowed the improvement of AAA stress estimation technique by the incorporation of experimentally determined tissue anisotropy into our models. 47,59 Kyriacou and Humphrey showed that the stress distribution in cerebral aneurysms is markedly different when incorporating an anisotropic model versus a simplified isotropic model, 60 and we have made similar preliminary observations for AAA.…”
Section: Estimation Of Aaa Wall Stresssupporting
confidence: 78%
“…Similarly, Hunter et al made note of focal saccular outpouchings, or "blebs," found within the walls of some AAA and conjectured that they may represent sites of potential rupture. 67 Studies by our group 55 and others 60 indicate that such asymmetrical outpouchings result in focal stress concentrations. That the blebs were characterized by a decreased procollagen expression and decreased elastin content as compared with the adjacent AAA wall 68 again gives rise to the possibility that increased mechanical forces alter local ECM synthesis.…”
Section: Stress-mediated or Strain-mediated Wall Weakeningmentioning
confidence: 90%
“…It was long thought that these lesions could enlarge rapidly due to structural instabilities, namely, a limit point instability or resonance (19)(20)(21)(22). Whereas these studies assumed linear or rubber-like properties of the wall, more appropriate nonlinear analyses suggest that such instabilities are unlikely (23,24). Rather, ISAs appear to enlarge via mechano-regulated growth and remodeling (G&R) processes common to diverse vascular adaptations (25,26).…”
Section: Natural History Intracranial Saccular Aneurysm (Isa)mentioning
confidence: 99%
“…Failure mechanisms remain unknown, but rupture usually occurs at the fundus (pole) despite the neck often being thinner (2,41). Although this was long perplexing, finite element calculations suggest that the maximum biaxial stresses typically occur near the fundus, where intramural shear stress is small (23,(42)(43). For this reason, it appears that a rupture criterion should be based on tensile, not shearing, stresses or strains.…”
Section: Natural History Intracranial Saccular Aneurysm (Isa)mentioning
confidence: 99%
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