Experimental Characterization of Acoustical and Dimensional Properties of Bone Diaphysis, Using the Theory of Rays
Abstract:The aim of this study is to establish an instrumental approach allowing dimensional and acoustical characterization of the cortical thickness and of the medullar marrow constituting the bone diaphysis. This one is modeled by a hollow cylinder. The solution of the direct problem, which is required before the evaluation of the searched parameters, is done using the Theory of Rays. The parameters are evaluated from the delay phase of reflected and transmitted waves in the tube. The precision of the theoretical estimation of arrival times of echoes is then experimentally verified. The solution of the inverse problem is next approached and validated on test objects made of Plexiglas and Duraluminium as well as in vitro on bovine samples. The whole results are very satisfactory. The acoustical velocities reported are in keeping with reference data and the dimensional parameters evaluated follow the internal and external outlines of the bone diaphysis in a satisfactory way.
Document Type: Research Article
Publication date: 2002-03-01
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- Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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