Evaluation cortical bone elasticity in response to pulse power excitation using ultrasonic technique
Asgarifar, Hajarossadat, Oloyede, Adekunle, Zare, Firuz, & Langton, Christian M. (2012) Evaluation cortical bone elasticity in response to pulse power excitation using ultrasonic technique. In Biomedical Engineering / 765: Telehealth / 766: Assistive Technologies, ACTA Press, Innsbruck, Austria.
This paper presents the ultrasonic velocity measurement method which investigates the possible effects of high voltage high frequency pulsed power on cortical bone material elasticity. Before applying a pulsed power signal on a live bone, it is essential to determine the safe parameters of pulsed power applied on bone non-destructively. Therefore, the possible changes in cortical bone material elasticity due to a specified pulsed power excitation have been investigated. A controllable positive buck-boost converter with adjustable output voltage and frequency has been used to generate high voltage pulses (500V magnitude at 10 KHz frequency). To determine bone elasticity, an ultrasonic velocity measurement has been conducted on two groups of control (unexposed to pulse power but in the same environmental condition) and cortical bone samples exposed to pulsed power. Young’s modulus of cortical bone samples have been determined and compared before and after applying the pulsed power signal. After applying the high voltage pulses, no significant variation in elastic property of cortical bone specimens was found compared to the control. The result shows that pulsed power with nominated parameters can be applied on cortical bone tissue without any considerable negative effect on elasticity of bone material.
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|Item Type:||Conference Paper|
|Keywords:||pulsed power, electrical stimulation, cortical bone, ultrasonic technique, elastic property, Young’s modulus|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > BIOMEDICAL ENGINEERING (090300) > Biomedical Instrumentation (090303)|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Current > Institutes > Institute of Health and Biomedical Innovation
Past > Schools > Physics
Past > Schools > School of Engineering Systems
|Copyright Owner:||Copyright 2012 ACTA Press|
|Deposited On:||15 Jan 2012 22:02|
|Last Modified:||24 May 2013 14:23|
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