声速
声学
光圈(计算机存储器)
计算机科学
超声波
合成孔径雷达
医学超声
断层摄影术
地质学
计算机视觉
物理
光学
作者
Yonghao Wang,Wenkai Lu,Yuxuan Li
标识
DOI:10.1109/ius51837.2023.10306564
摘要
Sound speed estimation in medical pulse-echo ultrasound imaging is a critical area of research with profound implications for disease diagnosis. However, traditional methods, such as tomographic reconstruction and layered media modeling, either involve substantial computational complexity or fail to account for lateral sound speed variations. This study introduces a new, efficient method for sound of speed (SoS) estimation, rooted in local event slope analysis of common middle point (CMP) gathers within synthetic aperture ultrasound channel data. This method facilitates direct estimation of tissue sound speed distribution, thus providing valuable quantitative parameters for clinical evaluations. Distinctly, our method yields a higher resolution velocity spectrum compared to conventional stacking velocity spectra, and effectively manages lateral velocity variations, catering to clinical scenarios with lateral sound speed heterogeneities. Ultimately, our proposed technique holds significant potential for enhancing ultrasound imaging quality and diagnostic precision.
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