Fast shear compounding using robust 2-D shear wave speed calculation and multi-directional filtering.
Fast shear compounding using robust 2-D shear wave speed calculation and multi-directional filtering.
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DOI：
10.1016/j.ultrasmedbio.2013.12.026
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发表时间：
2014-06
影响因子：
2.9
通讯作者：
Chen, Shigao
中科院分区：
文献类型：
--
作者：
Song, Pengfei;Manduca, Armando;Zhao, Heng;Urban, Matthew W.;Greenleaf, James F.;Chen, Shigao
关键词：
在这项研究中，开发了一种快速剪切复合方法，仅使用一个剪切波推检测周期，从而保持剪切波成像帧速率并最大限度地减少运动伪影。该方法由以下步骤组成：1.施加梳状推动以同时在不同空间位置处产生多个不同角度的剪切波; 2.使用多方向滤波器将所述复杂剪切波场分解成具有不同取向的剪切波的个体剪切波场; 3.使用稳健的二维（2D）剪切波速度计算来从每个滤波器方向重建2D剪切弹性图; 4.将这些来自不同方向的2D地图合成为最终地图。一项包含体模研究表明，快速剪切复合方法可以在不牺牲成像帧速率的情况下实现与传统剪切复合相当的性能。多夹杂物体模实验表明，快速剪切复合方法可以提供全视场（FOV），2D和复合剪切弹性图，其中三种类型的夹杂物清晰分辨，刚度测量结果与标称值非常一致。
A fast shear compounding method was developed in this study using only one shear wave push-detect cycle, such that the shear wave imaging frame rate is preserved and motion artifacts are minimized. The proposed method is composed of the following steps: 1. applying a comb-push to produce multiple differently angled shear waves at different spatial locations simultaneously; 2. decomposing the complex shear wave field into individual shear wave fields with differently oriented shear waves using a multi-directional filter; 3. using a robust two-dimensional (2D) shear wave speed calculation to reconstruct 2D shear elasticity maps from each filter direction; 4. compounding these 2D maps from different directions into a final map. An inclusion phantom study showed that the fast shear compounding method could achieve comparable performance to conventional shear compounding without sacrificing the imaging frame rate. A multi-inclusion phantom experiment showed that the fast shear compounding method could provide a full field-of-view (FOV), 2D, and compounded shear elasticity map with three types of inclusions clearly resolved and stiffness measurements showing excellent agreement to the nominal values.
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DOI：
10.1109/tuffc.2010.1740
发表时间：
2010-12
期刊：
IEEE transactions on ultrasonics, ferroelectrics, and frequency control
影响因子：
--
作者：
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通讯作者：
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影响因子：
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作者：
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DOI：
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发表时间：
2006-06-01
影响因子：
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作者：
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通讯作者：
Trahey, Gregg E.
DOI：
10.1109/t-su.1985.31615
发表时间：
1985-01-01
期刊：
IEEE TRANSACTIONS ON SONICS AND ULTRASONICS
影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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