title: Analysis of several biomechanical models for the simulation of lamb liver behaviour using similarity coefficients from medical image.
abstract: In this study, six biomechanical models for simulating lamb liver behaviour are presented. They are validated using similarity coefficients from Medical Image on reconstructed volumes from computerised tomography images. In particular, the Jaccard and Hausdorff coefficients are used. Loads of 20 and 40 g are applied to the livers and their deformation is simulated by means of the finite element method. The models used are a linear elastic model, a neo-Hookean model, a Mooney-Rivlin model, an Ogden model, a linear viscoelastic model and a viscohyperelastic model. The model that provided a behaviour that is closest to reality was the viscohyperelastic model, where the hyperelastic part was modelled with an Ogden model.
authors.affiliation: Instituto Interuniversitario de Investigación en Bioingeniería y Tecnología Orientada al Ser Humano/LabHuman, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain. fmartinez@labhuman.i3bh.es
authors.forename: F
authors.initials: F
authors.lastname: Martínez-Martínez
authors.forename: M A
authors.initials: MA
authors.lastname: Lago
authors.forename: M J
authors.initials: MJ
authors.lastname: Rupérez
authors.forename: C
authors.initials: C
authors.lastname: Monserrat
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D004548:Elasticity; D020342:Finite Element Analysis; D007091:Image Processing, Computer-Assisted; D008099:Liver / Q000000981:diagnostic imaging* / Q000502:physiology* / Q000601:surgery; D008954:Models, Biological; D012756:Sheep; D025321:Surgery, Computer-Assisted; D013718:Tensile Strength; D014057:Tomography, X-Ray Computed; D014783:Viscosity