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基于空间位移复合的超声弹性成像抑噪 被引量：3

Spatial Displacement Compounding to Reduce Artifact for Ultrasound Elastography
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摘要 超声弹性成像已经成为一种有效的医疗诊断工具,在成像过程中由于信号幅度的波动、压缩前后信号的解相关"误差"等原因,导致运动位移估计存在误差,这种误差在弹性图像中表现为伪影噪声,降低了弹性成像的图像质量,给诊断带来了不利影响。本文研究了一种空间位移复合的方法来校正位移估计,以达到抑制伪影噪声的目的。本文在原理上说明了这种方法的正确性,实验结果表明了该方法的有效性,信噪比和对比度信噪比的提高也证明了这一点。 Ultrasound elastography has been well applied to medical detection as a tool for diag- nosis aid. However, in conventional ultrasound elastograms, there are patterned artifacts from correlated errors. And random fluctuations of the signal amplitude result in a match only oc- currs at certain regions from pre- and post-compression window pairs. The artifacts should be prevented from diagnosis. A spatial displacement compounding method is proposed to correct the errors artifact reduction. It is proved that the method is in correct principle. The presented results from a commercial elastic phantom show some improvement in SNRe and CNRe.
作者 邵党国 钟明 易三莉 相艳 马磊 贺建峰
机构地区 昆明理工大学信息工程与自动化学院 昆明理工大学国际学院
出处 《数据采集与处理》 CSCD 北大核心 2014年第1期66-70,共5页 Journal of Data Acquisition and Processing
基金 昆明理工大学省级人才培养(kksy201303122)资助项目
关键词 超声弹性成像 空间复合 信噪比 对比度信噪比 ultrasound elastography spatial compounding SNRe CNRe
分类号 TP391 [自动化与计算机技术—计算机应用技术]
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参考文献15

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共引文献6

同被引文献55

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数据采集与处理
2014年 第1期

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