Wavelet Transform Analysis of Ultrasonic Wave Propagation in Cancellous Bone
抄録
<jats:p> Ultrasonic waves targeted on cancellous bone separates into fast and slow waves according to the alignment of bone trabeculae. The characteristics of the specimen, however, can sometimes result in ambiguous wave separation. In this study, we proposed using wavelet transform as a new method of analyzing ultrasonic waveforms. Using continuous wavelet transform, two components were separated by fitting two-dimensional Gaussian function in scalogram. The relationship between bone volume fraction and the peak amplitude of the lower- and higher-frequency components showed a clear negative correlation; conversely, the relationship between bone volume fraction and the peak value ratio of the lower- and higher-frequency components showed a positive correlation. We recoginized lower-frequency component as the multiple reflections (forward scattering) in cancellous bone. </jats:p>
収録刊行物
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 49 (7S), 07HF28-, 2010-07-01
IOP Publishing
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詳細情報 詳細情報について
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- CRID
- 1360003446855614208
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- NII論文ID
- 210000068942
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- ISSN
- 13474065
- 00214922
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- データソース種別
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