نتایج جستجو برای: nonlinear tissue

تعداد نتایج: 1131565  

Journal: :Magnetic resonance in medicine 2004
Ingolf Sack Christopher K McGowan Abbas Samani Chris Luginbuhl Wendy Oakden Donald B Plewes

MR elastography (MRE) is an MRI modality that is increasingly being used to image tissue elasticity throughout the body. One MRE technique that has received a great deal of attention is based on visualizing shear waves, which reveal stiffness by virtue of their local wavelength. However, the shape of propagating shear waves can also provide valuable information about the nonlinear stress-strain...

Journal: :Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 2013

2017
Scott J. Hollister Maximilian P. Hollister Sebastian K. Hollister

BACKGROUND Tracheomalacia (TM) is a condition of excessive tracheal collapse during exhalation. Both acquired and congenital forms of TM are believed to result from morphological changes in cartilaginous, fibrous and/or smooth muscle tissues reducing airway mechanical properties to a degree that precipitates collapse. However, neither the specific amount of mechanical property reduction nor the...

Journal: :Journal of biomechanical engineering 2009
Gregory C Thomas Anna Asanbaeva Pasquale Vena Robert L Sah Stephen M Klisch

A constituent based nonlinear viscoelastic (VE) model was modified from a previous study (Vena, et al., 2006, "A Constituent-Based Model for the Nonlinear Viscoelastic Behavior of Ligaments," J. Biomech. Eng., 128, pp. 449-457) to incorporate a glycosaminoglycan (GAG)-collagen (COL) stress balance using compressible elastic stress constitutive equations specific to articular cartilage (AC). For...

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