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Excitation of Ultrasonic Guided Waves In Bone Plates Using A Phased Array System
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- Author / Creator
- Nguyen, Kim-Cuong T
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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. -
- Subjects / Keywords
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- Graduation date
- Fall 2013
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- Type of Item
- Thesis
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- Degree
- Master of Science
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- License
- This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.