Brum J, Catheline S, Benech N, Negreira C
Laboratorio de Acústica Ultrasonora, Facultad de Ciencias, Instituto de Fisica, Universidad de la Republica, Montevideo, Uruguay.
J Acoust Soc Am. 2008 Dec;124(6):3377-80. doi: 10.1121/1.2998769.
In this work the shear elasticity of soft solids is measured from the surface wave speed estimation. An external source creates mechanical waves which are detected using acoustic sensors. The surface wave speed estimation is extracted from the complex reverberated elastic field through a time-reversal analysis. Measurements in a hard and a soft gelatin-based phantom are validated by independent transient elastography estimations. In contrast with other elasticity assessment methods, one advantage of the present approach is its low sound technology cost. Experiments performed in cheese and soft phantoms allows one to envision applications in the food industry and medicine.
在这项工作中，通过表面波速度估计来测量软固体的剪切弹性。外部源产生机械波，这些机械波通过声学传感器进行检测。表面波速度估计是通过时间反转分析从复杂的混响弹性场中提取的。在硬的和基于软明胶的体模中的测量结果通过独立的瞬态弹性成像估计进行了验证。与其他弹性评估方法相比，本方法的一个优点是其较低的声学技术成本。在奶酪和软体模上进行的实验使人们能够设想其在食品工业和医学中的应用。
