Characterization of shear waves in cortical bone using the axial transmission technique
Characterization of shear waves in cortical bone using the axial transmission technique
复制标题
使用轴向传输技术表征皮质骨中的剪切波
DOI：
--
复制
发表时间：
2019
影响因子：
1.5
通讯作者：
M. Matsukawa
中科院分区：
文献类型：
--
作者：
Leslie Bustamante;Masaya Saeki;M. Matsukawa
一种具有轴向透射式测量优点的定量超声技术被应用于研究在MHz范围内的超声波特性。本研究的重点是对骨板中横波的评估和有效检测。随后，用时域有限差分法(FDTD)分析了均匀各向同性骨模型中波的传播。并将实验测量结果与模拟结果进行了对比分析。在不同入射角度下产生和检测的超声表明，根据入射角度的不同，可以观察到纵波或横波。骨板各向异性介质中的波速测量结果与FDTD各向同性模型的结果吻合较好，表明各向同性模型可以给出可靠的皮质骨轴向测量结果。最后，本研究证实了利用轴向传输技术检测横波的可能性。
A quantitative ultrasound technique with the advantages of an axial transmission measurement was applied in this study for the characterization of ultrasonic waves in the MHz range. This study focuses on the evaluation and effective detection of shear waves in bone plates. Subsequently, wave propagation in a homogeneous and isotropic bone model is analyzed using the finite-difference time-domain, (FDTD) method. A comparative analysis is presented between the experimental measurements and simulation results. Ultrasound generated and detected at different incident angles, revealed that longitudinal or shear waves can be observed depending on the angle. Wave velocity measurements in the anisotropic medium of the bone plate showed good agreement with the FDTD isotropic model results, suggesting that isotropic models could give a reliable estimation for measurements performed in the axial direction of the cortical bone. Finally, this study confirmed the possibility of shear wave detection using the axial transmission technique.