彈性成像的二維位移估計方法
The invention relates to a two-dimension displacement estimation method of elasticity imaging, which comprises the following steps: carrying out two-dimension initial displacement estimation on a first radio frequency frame and a second radio frequency frame of an ultrasonic pattern to be treated by a matching algorithm with robustness; using the obtained two-dimension initial displacement estimation to adjust the image of the first radio frequency frame to cause that the relativity between the regulated first frame and the original second frame is higher compared with the original first frame; and carrying out the displacement estimation on the original second frame and the regulated first frame by a sub-pixel displacement estimation algorithm; synthesizing the obtained two-dimension initial displacement estimation result with the displacement estimation result obtained by the sub-pixel displacement estimation algorithm and obtaining the total two-dimension displacement estimation. The two-dimension displacement estimation method of elasticity imaging adopts an initial estimation step which is rough but robust and a fine searching step which is accurate but needs the image with higher relativity so as to simultaneously achieve high speed and accuracy.
生物醫學
醫學影像
ZHENG Yongping
ZHOU Yongjin
HUANG Zhengming
中國內地
