Sandrin Laurent, Tanter Mickaël, Gennisson Jean-Luc, Catheline Stefan, Fink Mathias
Laboratoire Ondes et Acoustique, Ecole Supérieure de Physique et Chimie Industrielles de la Ville de Paris, Université Denis Diderot, CNRS UMR 7587, France.
IEEE Trans Ultrason Ferroelectr Freq Control. 2002 Apr;49(4):436-46. doi: 10.1109/58.996561.
Important tissue parameters such as elasticity can be deduced from the study of the propagation of low frequency shear waves. A new method for measuring the shear velocity in soft tissues is presented in this paper. Unlike conventional transient elastography, in which the ultrasonic transducer and the low frequency vibrator are two separated parts, the new method relies on a probe that associates the vibrator and the transducer, which is built on the axis of the vibrator. This setup is easy to use. The low frequency shear wave is driven by the transducer itself that acts as a piston while it is used in pulse echo mode to acquire ultrasonic lines. The results obtained with the new method are in good agreement with those obtained with the conventional one.
诸如弹性等重要的组织参数可以通过对低频剪切波传播的研究推导出来。本文提出了一种测量软组织中剪切速度的新方法。与传统的瞬态弹性成像不同，在传统瞬态弹性成像中超声换能器和低频振动器是两个分开的部件，而新方法依赖于一种将振动器和换能器结合在一起的探头，该探头构建在振动器的轴线上。这种设置易于使用。低频剪切波由本身用作活塞的换能器驱动，同时它以脉冲回波模式用于采集超声线。用新方法获得的结果与用传统方法获得的结果非常吻合。
