title: Diagnostic ultrasound artifacts during imaging of two-body interfaces: part 2--beam thickness artifact.
abstract: A diagnostic ultrasound method is being developed for measuring surface contact areas at the tibio-femoral interface of a total knee replacement in a non-clinical industrial setting as an engineering design tool. As an initial step towards this, a previous study mathematically predicted the effect of ultrasound beam thickness on contact area measurements at a two-body interface. In the current study, a novel metal-on-polymer acoustic test object was constructed to create circular two-body interfaces of known geometry. The object was ultrasonically imaged, contact areas measured, and the results compared with the theoretical model previously developed.
authors.affiliation: rad@housechurch.ca
authors.forename: R
authors.initials: R
authors.lastname: Zdero
authors.forename: P V
authors.initials: PV
authors.lastname: Fenton
authors.forename: J T
authors.initials: JT
authors.lastname: Bryant
mesh_terms: D000535:Aluminum; D016477:Artifacts; D006801:Humans; D007720:Knee Prosthesis; D008962:Models, Theoretical; D019047:Phantoms, Imaging; D011095:Polyethylenes; D014463:Ultrasonography
chemical_list: D011095:Polyethylenes; C111601:ultra-high molecular weight polyethylene; D000535:Aluminum