title: Equivalent contributing depth investigated by a lateral wave with axial transmission in viscoelastic cortical bone.
abstract: Cortical bone is a viscoelastic heterogeneous medium which may be assessed with axial transmission. This work aims at evaluating the average depth investigated by the lateral wave for radial variations of material properties in relatively thick cortical bone. The equivalent contributing depth (ECD) is derived from the finite element simulation results for spatial variations of a viscoelastic coefficient (η(11)) and of porosity. A value of ECD equal to around 1.6 mm is obtained for a spatial variation of η(11). The method fails to predict accurate values of the ECD for a spatial variation of porosity, because all parameters vary simultaneously.
authors.affiliation: CNRS, Université Paris-Est, Laboratoire Modélisation et Simulation Multi Echelle, UMR 8208 CNRS, 94010 Créteil Cedex, France. guillaume.haiat@univ-paris-est.fr
authors.forename: Guillaume
authors.initials: G
authors.lastname: Haïat
authors.forename: Salah
authors.initials: S
authors.lastname: Naili
authors.forename: Mai
authors.initials: M
authors.lastname: Ba Vu
authors.forename: Christophe
authors.initials: C
authors.lastname: Desceliers
authors.forename: Christian
authors.initials: C
authors.lastname: Soize
mesh_terms: D000162:Acoustics; D001844:Bone Conduction / Q000502:physiology*; D002113:Calcification, Physiologic / Q000502:physiology*; D003198:Computer Simulation; D004548:Elasticity; D006801:Humans; D008954:Models, Biological; D010024:Osteoporosis / Q000503:physiopathology*; D016062:Porosity; D014783:Viscosity