Volumetric elasticity imaging with a 2-D CMUT array.
Volumetric elasticity imaging with a 2-D CMUT array.
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DOI：
10.1016/j.ultrasmedbio.2010.03.019
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发表时间：
2010-06
影响因子：
2.9
通讯作者：
Barnes, Steve
中科院分区：
文献类型：
--
作者：
Fisher, Ted G.;Hall, Timothy J.;Panda, Satchi;Richards, Michael S.;Barbone, Paul E.;Jiang, Jingfeng;Resnick, Jeff;Barnes, Steve
本文报告了使用二维（2D）电容式微机械超声换能器（CMUT）从相对较大体积的简单超声体模中采集射频（RF）回波数据，以比较3D弹性成像方法。典型的2D运动跟踪的弹性成像进行了比较，三种不同的方法的3D运动跟踪，与平方和差（SSD）作为相似性度量。算法之间的差异在于它们跟踪仰角运动的程度：完全不（2D搜索）、平面搜索、多平面组合和平面独立引导搜索。变形前和运动补偿变形后RF回波场之间的互相关用于量化运动跟踪精度。病变的对比噪声比被用来量化图像质量。跟踪精度和应变图像质量通常随着跟踪复杂性的提高而提高。当用作3D模量重建的输入时，高质量的3D位移估计产生准确且低噪声的模量重建。
This paper reports the use of a two-dimensional (2D) capacitive micro-machined ultrasound transducer (CMUT) to acquire radio frequency (RF) echo data from relatively large volumes of a simple ultrasound phantom to compare 3D elasticity imaging methods. Typical 2D motion tracking for elasticity image formation was compared to three different methods of 3D motion tracking, with sum-squared difference (SSD) used as the similarity measure. Differences among the algorithms were the degree to which they tracked elevational motion: not at all (2D search), planar search, combination of multiple planes, and plane independent guided search. The cross correlation between the pre-deformation and motion-compensated post-deformation RF echo fields was used to quantify motion tracking accuracy. The lesion contrast-to-noise ratio was used to quantify image quality. Tracking accuracy and strain image quality generally improved with increased tracking sophistication. When used as input for a 3D modulus reconstruction, high quality 3D displacement estimates yielded accurate and low noise modulus reconstruction.
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影响因子：
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