title: Diagnostic ultrasound artifacts during imaging of two-body interfaces: part 1--wavelength resonance.
abstract: A diagnostic ultrasound technique is to be developed for measuring surface contact areas at the tibio-femoral interface of a total knee replacement in an in vitro industrial engineering setting as a design tool. As a first step, a previous study mathematically characterized the ultrasound behaviour expected at a two-body circular-on-flat interface of known geometry. In the current investigation, a series of test objects was constructed and imaged to experimentally validate the theoretical contact models. Specifically, several unique metal-on-polymer test objects, whose interfaces were point, non-point, and circular contact areas, were ultrasonically imaged. The effects of interface geometry, ultrasound resonance wavelength, lambda/2, and compressive load were studied.
authors.affiliation: Human Mobility Research Centre, Apps Medical Research Centre, Kingston General Hospital, Kingston, Ont., Canada K7L-2V7. 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; D014465:Ultrasonics; D014463:Ultrasonography
chemical_list: D011095:Polyethylenes; C111601:ultra-high molecular weight polyethylene; D000535:Aluminum