基于Westervelt方程的脉冲回波模式非线性超声成像初步研究

IF 1.5 4区医学 Q3 SURGERY

Computer Assisted Surgery Pub Date : 2019-09-24 DOI:10.1080/24699322.2019.1649065

Wuxuan Chen, Peng Wang, Zhihong Zhang, Xudong Deng, C. Zhang, Shenggen Ju

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引用次数: 5

摘要

摘要近年来，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，非线性成像方法提供了改进的空间分辨率和对比度分辨率。我们介绍了一种基于高斯形式解假设的非线性波动方程的非线性成像方法，该方法可以应用于诊断超声的脉冲回波模式。通过使用双脉冲传输，只保留了非线性效应，可以消除散射、衍射和线性衰减等其他效应。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B/A在介质中的空间分布。

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Nonlinear ultrasonic imaging in pulse-echo mode using Westervelt equation: a preliminary research

Abstract 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.

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来源期刊

Computer Assisted Surgery Medicine-Surgery

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

10 weeks

期刊介绍： omputer Assisted Surgery aims to improve patient care by advancing the utilization of computers during treatment; to evaluate the benefits and risks associated with the integration of advanced digital technologies into surgical practice; to disseminate clinical and basic research relevant to stereotactic surgery, minimal access surgery, endoscopy, and surgical robotics; to encourage interdisciplinary collaboration between engineers and physicians in developing new concepts and applications; to educate clinicians about the principles and techniques of computer assisted surgery and therapeutics; and to serve the international scientific community as a medium for the transfer of new information relating to theory, research, and practice in biomedical imaging and the surgical specialties. The scope of Computer Assisted Surgery encompasses all fields within surgery, as well as biomedical imaging and instrumentation, and digital technology employed as an adjunct to imaging in diagnosis, therapeutics, and surgery. Topics featured include frameless as well as conventional stereotactic procedures, surgery guided by intraoperative ultrasound or magnetic resonance imaging, image guided focused irradiation, robotic surgery, and any therapeutic interventions performed with the use of digital imaging technology.