Anisotropy of longitudinal wave velocity in spherically shaped bovine cortical bone

K. Yamamoto, T. Nakatsuji, M. Indo, T. Yanagitani, M. Matsukawa, K. Yamazaki

研究成果: Conference contribution

抄録

Quantitative ultrasound (QUS) is a good method for measuring elastic properties of bone in vivo, because the obtained ultrasound wave properties directly reflect the longitudinal elasticity. Bone tissue is composed of minerals like hydroxyapatite (HAp) and collagen matrix. HAp crystallites orientation is thus one parameter of bone quality. In this study, we made spherically shaped specimens from anterior part of the cortical bone of three bovine femurs. By using these specimens, we experimentally investigate the anisotropy of ultrasonic wave velocity and the HAp crystallites orientation in axial-radial, axial-tangential and radial-tangential planes in detail. Longitudinal ultrasonic wave propagation was investigated by using a conventional ultrasonic pulse system. Wave velocity anisotropy was clear in each plane. The direction of the fastest wave velocity showed a small tilt from the bone axis in axial-radial and axial-tangential plane. Moreover, X-ray pole figure measurement indicated that there were also small tilts of the HAp crystallites orientation from the axial direction. The tilts were similar with the tilts of fastest velocity direction. There were actually good correlation between velocity and HAp crystallites orientation in axial-radial and tangential plane. But there was no correlation in radial-tangential plane.

本文言語English
ホスト出版物のタイトルThe Third International Conference on the Development of Biomedical Engineering in Vietnam
出版社Springer Verlag
ページ102-105
ページ数4
ISBN(印刷版)9783642120190
DOI
出版ステータスPublished - 2010
外部発表はい
イベント3rd International Conference on the Development of Biomedical Engineering in Vietnam - Ho Chi Minh City, Viet Nam
継続期間: 2010 1 112010 1 14

出版物シリーズ

名前IFMBE Proceedings
27
ISSN(印刷版)1680-0737

Other

Other3rd International Conference on the Development of Biomedical Engineering in Vietnam
国/地域Viet Nam
CityHo Chi Minh City
Period10/1/1110/1/14

ASJC Scopus subject areas

  • バイオエンジニアリング
  • 生体医工学

フィンガープリント

「Anisotropy of longitudinal wave velocity in spherically shaped bovine cortical bone」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル