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Permanent link (DOI): https://doi.org/10.7939/R39Z90P53

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Excitation of Ultrasonic Guided Waves In Bone Plates Using A Phased Array System Open Access

Descriptions

Other title
Subject/Keyword
Bone plate
Phased array
Guided waves
Excitation
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Nguyen, Kim-Cuong T
Supervisor and department
Le, Lawrence (Radiology and Diagnostic Imaging)
Lou, Edmond (Surgery)
Examining committee member and department
Filipow, Larry (Radiology and Diagnostic Imaging)
Le, Lawrence (Radiology and Diagnostic Imaging)
Lou, Edmond (Surgery)
Gu, Jeff (Physics)
Department
Medical Sciences-Radiology and Diagnostic Imaging
Specialization

Date accepted
2013-09-28T20:09:22Z
Graduation date
2013-11
Degree
Master of Science
Degree level
Master's
Abstract
Ultrasonic guided waves have been exploited to study long bones using the axial transmission technique. The application of phased array (PA) technology to bone study is uncommon and the conventional technique involves the employment of a pair of angled beam transducers, which is laborious. In this thesis, we investigated the use of a commercial non-medical ultrasonic PA system to study Lamb waves in Plexiglas and bovine bone plates using a single array probe and two array probes. Data acquired by the single probe was deteriorated by the presence of crosstalk. We developed a Radon-based adaptive crosstalk cancellation algorithm to remove the crosstalk and recover the signals. Using the two array probes, we studied beam steering to preferentially excite guided modes for bone assessment. The results have demonstrated the advantages of the PA system over the conventional single-emitter-singlereceiver system in terms of accuracy, speed, and patient comfort, if used in clinical settings.
Language
English
DOI
doi:10.7939/R39Z90P53
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
Citation for previous publication
Kim-Cuong T. Nguyen, Lawrence H. Le, Tho N.H.T. Tran, Mauricio D. Sacchi, Edmond H.M. Lou, Excitation of ultrasonic Lamb waves using a phased array system with two array probes: Phantom and in vitro bone studies, Ultrasonics, Available online 25 August 2013, ISSN 0041-624X,  http://dx.doi.org/10.1016/j.ultras.2013.08.004
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