TY - GEN
T1 - Assesment of human jawbone using ultrasonic guided wave
T2 - 2007 IEEE Ultrasonics Symposium, IUS
AU - Mahmoud, Ahmed
AU - Cortes, Daniel
AU - Abaza, Ayman
AU - Ammar, Hany
AU - Mukdadi, Osama
AU - Hazey, Mike
AU - Ngan, Peter
AU - Crout, Richard
PY - 2007
Y1 - 2007
N2 - This work is motivated by the lack of current imaging modalities to accurately predict the mechanical properties and defects in jawbone. Ultrasonic guided waves are sensitive to changes in microstructural properties and thus have been widely used for non-invasive material characterization. Guided waves propagating along the mandibles may exhibit dispersion behavior which depends on material properties, geometry and embedded cavities. In this work, we present the first theoretical and experimental study for the analysis of guided wave propagation in jawbone. Semi-analytical finite-element (SAFE) method is employed to analyze dispersion behavior of guided waves propagating in human mandibles. The cross section of the mandible is divided in two regions representing the cortical and trabecular bones. The experimental set-up for the guided waves experiment is described. Gabor Wavelet is used to calculate the experimental dispersion behavior from the ultrasound radio frequency (RF) signals. Results from both numerical analysis and guided waves experiment exhibit variations in the group velocity of the first arrival signal and also in the dispersion behavior of healthy and defected mandibles. These results shall provide a means to non-invasively characterize the jawbone and assess the bone mechanical properties.
AB - This work is motivated by the lack of current imaging modalities to accurately predict the mechanical properties and defects in jawbone. Ultrasonic guided waves are sensitive to changes in microstructural properties and thus have been widely used for non-invasive material characterization. Guided waves propagating along the mandibles may exhibit dispersion behavior which depends on material properties, geometry and embedded cavities. In this work, we present the first theoretical and experimental study for the analysis of guided wave propagation in jawbone. Semi-analytical finite-element (SAFE) method is employed to analyze dispersion behavior of guided waves propagating in human mandibles. The cross section of the mandible is divided in two regions representing the cortical and trabecular bones. The experimental set-up for the guided waves experiment is described. Gabor Wavelet is used to calculate the experimental dispersion behavior from the ultrasound radio frequency (RF) signals. Results from both numerical analysis and guided waves experiment exhibit variations in the group velocity of the first arrival signal and also in the dispersion behavior of healthy and defected mandibles. These results shall provide a means to non-invasively characterize the jawbone and assess the bone mechanical properties.
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U2 - 10.1109/ULTSYM.2007.549
DO - 10.1109/ULTSYM.2007.549
M3 - Conference contribution
AN - SCOPUS:48149092751
SN - 1424413834
SN - 9781424413836
T3 - Proceedings - IEEE Ultrasonics Symposium
SP - 2183
EP - 2186
BT - 2007 IEEE Ultrasonics Symposium Proceedings, IUS
Y2 - 28 October 2007 through 31 October 2007
ER -
