Measurement of airborne ultrasonic slow waves in calcaneal cancellous bone
| Autor: | V. Paech, P.H.F. Nicholson, R. Strelitzki |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Adult
Materials science Wave propagation Quantitative Biology::Tissues and Organs Acoustics Transducers Physics::Medical Physics Biomedical Engineering Biophysics Tortuosity Biophysical Phenomena Cadaver medicine Humans Ultrasonography Fourier Analysis business.industry Air Ultrasound Reproducibility of Results Acoustic wave Calcaneus medicine.anatomical_structure Attenuation coefficient Ultrasonic sensor Phase velocity business Cancellous bone |
| Zdroj: | Medical Engineering & Physics. 21:215-223 |
| ISSN: | 1350-4533 |
| DOI: | 10.1016/s1350-4533(99)00048-x |
| Popis: | Measurements of an airborne ultrasonic wave were made in defatted cancellous bone from the human calcaneus using standard ultrasonic equipment. The wave propagating under these conditions was consistent with a decoupled Biot slow wave travelling in the air alone, as previously reported in gas-saturated foams. Reproducible measurements of phase velocity and attenuation coefficient were possible, and an estimate of the tortuosity of the trabecular framework was derived from the high frequency limit of the phase velocity. Thus the method offers a new approach to the acoustic characterisation of bone in vitro which, in contrast to existing techniques, has the potential to yield information directly characterising the trabecular structure. |
| Databáze: | OpenAIRE |
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