Sidelobe suppression in ultrasound imaging using dual apodization with cross-correlation.
Sidelobe suppression in ultrasound imaging using dual apodization with cross-correlation.
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DOI：
10.1109/tuffc.919
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发表时间：
2008-10
期刊：
影响因子：
--
通讯作者：
Yen JT
中科院分区：
文献类型：
--
作者：
Seo CH;Yen JT
本文介绍了一种新的旁瓣和杂波抑制超声成像的方法称为双切趾与互相关或DAX。DAX显着提高了对比噪声比（CNR），使无回声囊肿和血管的可视化更容易。该技术使用双变迹或加权策略，其在去除或最小化杂波方面是有效的，并且在计算负载和硬件/软件需求方面是高效的。这种双切趾使我们能够确定的主瓣与杂波的贡献量的信号通过互相关的RF数据从两个切趾功能。使用128个元件的5 MHz线性阵列的仿真结果显示，与在3 mm直径的无回声圆柱形囊肿中具有均匀变迹的标准波束形成数据相比，CNR提高了139%。使用具有相同大小囊肿的组织模拟体模的实验CNR在DAX处理的图像中显示出123%的改善。
This paper introduces a novel sidelobe and clutter suppression method in ultrasound imaging called Dual Apodization with Cross-correlation or DAX. DAX dramatically improves the contrast-to-noise ratio (CNR) allowing for easier visualization of anechoic cysts and blood vessels. This technique uses dual apodization or weighting strategies that are effective in removing or minimizing clutter and efficient in terms of computational load and hardware/software needs. This dual apodization allows us to determine the amount of mainlobe versus clutter contribution in a signal by cross-correlating RF data acquired from two apodization functions. Simulation results using a 128 element 5 MHz linear array show an improvement in CNR of 139 % compared to standard beamformed data with uniform apodization in a 3 mm diameter anechoic cylindrical cyst. Experimental CNR using a tissue-mimicking phantom with the same sized cyst shows an improvement of 123 % in a DAX processed image.