Sandrin L, Catheline S, Tanter M, Hennequin X, Fink M
Laboratoire Ondes et Acoustique, E.S.P.C.I. Université Paris VII, France.
Ultrason Imaging. 1999 Oct;21(4):259-72. doi: 10.1177/016173469902100402.
In this paper, a new elastographic method is proposed. Using this method, the propagation of a low-frequency transient shear wave can be imaged by means of an ultrafast imaging system (up to 10,000 frames/s) that we have developed. Ultrafast ultrasonic imaging is obtained with a linear array of transducers (3.5 MHz) connected to electronics that have 64 channels sampled at 30 MHz and 128 Kbytes for storing the backscattered signals. Displacements are measured using cross-correlation of the ultrasonic signals. Movies of the low central frequency (200 Hz) shear wave propagation through homogeneous and heterogeneous phantoms have been obtained with 1,000 and 2,000 frames per second.
本文提出了一种新的弹性成像方法。使用该方法，低频瞬态剪切波的传播可以通过我们开发的超快成像系统（高达10000帧/秒）进行成像。超快超声成像通过连接到电子设备的换能器线性阵列（3.5MHz）获得，该电子设备具有64个通道，以30MHz采样，并具有128KB用于存储后向散射信号。位移通过超声信号的互相关来测量。已经以每秒1000帧和2000帧的速度获得了低中心频率（200Hz）剪切波在均匀和非均匀体模中传播的动态图像。
