公开(公告)号：US6036650A

公开(公告)日：2000-03-14

申请号：US153819

申请日：1998-09-15

申请人： Ching-Chen Wu ,  Gerald L. Litzza ,  David Bleam ,  Randall C. Ziegenbein

发明人： Ching-Chen Wu ,  Gerald L. Litzza ,  David Bleam ,  Randall C. Ziegenbein

IPC分类号： G01N29/44 ,  A61B8/12 ,  G01S7/52 ,  G01S15/89

CPC分类号： A61B8/12 ,  G01S7/52046 ,  G01S15/8922 ,  G01S7/5206

摘要： Ultrasonic imaging method and apparatus in which a reference waveform which is substantially free of echoes is modified to be equal to a weighted sum of the reference waveform and filtered signals from the transducing elements which transmit the ultrasonic waves and receive the reflected echoes. The modified waveform is then subtracted from the transducer signals to remove ringdown signals and provide a displayed image which is substantially free of ringdown artifacts.

摘要翻译： 基本上没有回波的参考波形的超声波成像方法和装置被修改为等于来自传输超声波并且接收反射回波的传感元件的参考波形和滤波信号的加权和。 然后从换能器信号中减去经修改的波形，以消除振铃信号，并提供基本上没有振铃效应的显示图像。