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http://dx.doi.org/10.7776/ASK.2010.29.6.388

Variations of Speed of Sound and Attenuation Coefficient with Porosity and Structure in Bone Mimics  

Kim, Seong-Il (강원대학교 물리학과)
Choi, Min-Joo (제주대학교 의학과)
Lee, Kang-Il (강원대학교 물리학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.29, no.6, 2010 , pp. 388-394 More about this Journal
Abstract
In the present study, polyacetal bone mimics with circular cylindrical pores were used to investigate variations of speed of sound and attenuation coefficient with porosity and microarchitecture in bone. The speed of sound and attenuation coefficient of the 6 bone mimics with porosities from 0 % to 65.9 % were measured by a through-transmission method in water, using a pair of broadband, unfocused transducers with a diameter of 12.7 mm and a center frequency of 1.0 MHz. Independently of the structural properties of the bone mimics, the speed of sound decreased almost linearly with the increasing porosity. The attenuation coefficient measured at 1.0 MHz exhibited linear or nonlinear correlations with the porosity, depending on the structural properties of the bone mimics. These results are consistent with those previously published by other researchers using bone samples and mimics, and advances our understanding of the relationships of the ultrasonic parameters for the diagnosis of osteoporosis with the bone density and microarchitecture in human bones.
Keywords
Osteoporosis; Bone Mimic; Porosity; Bone Mineral Density; Bone Microarchitecture; Quantitative Ultrasound; Speed of Sound; Attenuation Coefficient;
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Times Cited By KSCI : 2  (Citation Analysis)
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