Shear Wave Imaging Using Phase Modulation Component of Harmonic Distortion in Continuous Shear Wave Excitation
Shear Wave Imaging Using Phase Modulation Component of Harmonic Distortion in Continuous Shear Wave Excitation
复制标题
使用连续剪切波激励中谐波失真的相位调制分量进行剪切波成像
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Y. Yamakoshi
中科院分区：
文献类型：
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作者：
R. Parajuli;R. Tei;D. Nakai;Y. Yamakoshi
利用连续剪切波激发（CSWE）的弹性成像方法有望成为一种安全、定量的技术。通过对剪切波传播的二维（2D）位移图进行传播波数谱分析，可以产生速度图。然而，准确性和分辨率的问题限制了该技术在医学诊断中的可靠性。在本文中，我们提出了一个剪切波成像系统重建的剪切波传播的空间相位调制分量，以获得高分辨率的连续剪切波激励的图像。通过对复位移相位进行空间微分得到的横波局部速度作为成像参数。在局部速度图中出现了类似于纹理的相位调制分量，给出了小振幅相位调制的精确信息。
An elasticity imaging method using continuous shear wave excitation (CSWE) is expected to be a safe and quantitative technique. A velocity map could be produced by propagating wave number spectrum analysis of a two-dimensional (2D) displacement map of shear wave propagation. However; the problems of accuracy and resolution have limited the reliability of this technique in medical diagnosis. In this paper, we propose a shear wave imaging system for reconstructing the spatial phase modulation component of shear wave propagation in order to obtain high-resolution images of continuous shear wave excitation. Shear wave local velocity, which is derived from the spatial differentation of the phase of complex displacement, is adopted as an imaging parameter. A fine texture-like pattern of the phase modulation component appears in the local velocity map, which gives precise information of small-amplitude phase modulation.
影响因子：
2.9
作者：
PARKER, KJ;HUANG, SR;LERNER, RM
通讯作者：
LERNER, RM