title: Propagation of two longitudinal waves in a cancellous bone with the closed pore boundary.
abstract: Ultrasound propagation in cancellous bone (porous media) under the condition of closed pore boundaries was investigated. A cancellous bone and two plate-like cortical bones obtained from a racehorse were prepared. A water-immersion ultrasound technique in the MHz range and a three-dimensional elastic finite-difference time-domain (FDTD) method were used to investigate the waves. The experiments and simulations showed a clear separation of the incident longitudinal wave into fast and slow waves. The findings advance the evaluation of bones based on the two-wave phenomenon for in vivo assessment.
authors: Doshisha University, Kyotanabe, Kyoto, Japan. kmizuno0417@gmail.com
authors: Katsunori
authors: K
authors: Mizuno
authors: Yoshiki
authors: Y
authors: Nagatani
authors: Keisuke
authors: K
authors: Yamashita
authors: Mami
authors: M
authors: Matsukawa
mesh_terms: D000818:Animals; D001842:Bone and Bones / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D003198:Computer Simulation; D004548:Elasticity; D005260:Female; D006736:Horses; D008962:Models, Theoretical; D009038:Motion; D009716:Numerical Analysis, Computer-Assisted; D016062:Porosity; D012815:Signal Processing, Computer-Assisted; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D014465:Ultrasonics; D014463:Ultrasonography; D014867:Water
chemical_list: D014867:Water