Recovering vector displacement estimates in quasistatic elastography using sparse relaxation of the momentum equation.
Recovering vector displacement estimates in quasistatic elastography using sparse relaxation of the momentum equation.
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DOI：
10.1080/17415977.2016.1161034
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发表时间：
2017
影响因子：
1.3
通讯作者：
Barbone PE
中科院分区：
文献类型：
--
作者：
Babaniyi OA;Oberai AA;Barbone PE
研究了平面应力条件下非均质弹性固体变形的二维矢量位移场估计问题。这个问题是由准静态弹性学的应用引起的。该方法通过对二维矢量位移场的一个分量的精确测量和非常有限的第二分量信息，可以相当准确地重建第二分量。不需要关于材料性质的非均匀分布的先验知识。该方法依赖于使用一种特殊形式的动量方程来过滤超声波位移测量，以产生更精确的估计。用模拟位移数据验证了该方法的有效性。我们将该方法应用于模拟组织的位移数据和体内数据；从所有测试中恢复的过滤位移都有显著的改进。在验证研究中，侧向位移估计误差从约50%下降到约2%，应变误差从超过250%下降到2%以下。
We consider the problem of estimating the 2D vector displacement field in a heterogeneous elastic solid deforming under plane stress conditions. The problem is motivated by applications in quasistatic elastography. From precise and accurate measurements of one component of the 2D vector displacement field and very limited information of the second component, the method reconstructs the second component quite accurately. No a priori knowledge of the heterogeneous distribution of material properties is required. This method relies on using a special form of the momentum equations to filter ultrasound displacement measurements to produce more precise estimates. We verify the method with applications to simulated displacement data. We validate the method with applications to displacement data measured from a tissue mimicking phantom, and in-vivo data; significant improvements are noticed in the filtered displacements recovered from all the tests. In verification studies, error in lateral displacement estimates decreased from about 50% to about 2%, and strain error decreased from more than 250% to below 2%.
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影响因子：
3.5
作者：
Geiman, BJ;Bohs, LN;Trahey, GE
通讯作者：
Trahey, GE
影响因子：
4.2
作者：
Abeysekera, Jeffrey M.;Azar, Reza Zahiri;Salcudean, Septimiu E.
通讯作者：
Salcudean, Septimiu E.
DOI：
10.1109/tuffc.2011.1865
发表时间：
2011-04
期刊：
IEEE transactions on ultrasonics, ferroelectrics, and frequency control
影响因子：
--
作者：
Jiang J;Hall TJ
通讯作者：
Hall TJ
DOI：
10.1109/tuffc.2012.2370
发表时间：
2012-08-01
影响因子：
3.6
作者：
Korukonda, Sanghamithra;Doyley, Marvin M.
通讯作者：
Doyley, Marvin M.
影响因子：
10.6
作者：
Goenezen S;Dord JF;Sink Z;Barbone PE;Jiang J;Hall TJ;Oberai AA
通讯作者：
Oberai AA