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Nonlinear ultrasonic imaging in pulse-echo mode using Westervelt equation: a preliminary research.
Computer Assisted Surgery ( IF 2.1 ) Pub Date : 2019-09-24 , DOI: 10.1080/24699322.2019.1649065
Wuxuan Chen 1 , Peng Wang 1 , Zhihong Zhang 2 , Xudong Deng 2 , Congyao Zhang 1 , Shenggen Ju 1
Affiliation  

Acoustic nonlinear parameter β, was of great interest in tissue characterization in recent years. Nonlinear imaging methods have been reported to provide improved spatial and contrast resolution. We introduce a nonlinear imaging method derived from nonlinear wave equation based on Gaussian-form solution assumption, which can be applied in pulse-echo mode on diagnostic ultrasound. Through making the use of two pulse transmission, only nonlinear effects are reserved and other effects like scattering, diffraction and linear attenuation can be eliminated. For validation of this method a set of simulation results are generated with a nonlinear simulator. Simulated images also indicate that our method clearly describes the spatial distribution of B/A in the medium.



中文翻译:

基于Westervelt方程的脉冲回波模式非线性超声成像:初步研究。

近年来,声学非线性参数β在组织表征中引起了极大的兴趣。据报道,非线性成像方法可提供改善的空间和对比度分辨率。我们介绍了一种基于高斯形式解假设的基于非线性波动方程的非线性成像方法,该方法可以在脉冲回波模式下应用于超声诊断。通过使用两个脉冲传输,仅保留了非线性效应,并且可以消除其他效应,例如散射,衍射和线性衰减。为了验证该方法,使用非线性模拟器生成了一组模拟结果。模拟图像还表明,我们的方法清楚地描述了介质中B / A的空间分布。

更新日期:2019-09-24
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