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

  • Author / Creator
    Nguyen, Kim-Cuong T
  • 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
  • Graduation date
    2013-11
  • Type of Item
    Thesis
  • Degree
    Master of Science
  • DOI
    https://doi.org/10.7939/R39Z90P53
  • 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.
  • Language
    English
  • Institution
    University of Alberta
  • Degree level
    Master's
  • Department
    • Medical Sciences-Radiology and Diagnostic Imaging
  • Supervisor / co-supervisor and their department(s)
    • Lou, Edmond (Surgery)
    • Le, Lawrence (Radiology and Diagnostic Imaging)
  • Examining committee members and their departments
    • Lou, Edmond (Surgery)
    • Le, Lawrence (Radiology and Diagnostic Imaging)
    • Filipow, Larry (Radiology and Diagnostic Imaging)
    • Gu, Jeff (Physics)