Analysis of 2-D motion tracking in ultrasound with dual transducers
Analysis of 2-D motion tracking in ultrasound with dual transducers
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DOI：
10.1016/j.ultras.2011.07.011
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发表时间：
2012-01-01
期刊：
影响因子：
4.2
通讯作者：
Salcudean, Septimiu E.
中科院分区：
文献类型：
--
作者：
Abeysekera, Jeffrey M.;Azar, Reza Zahiri;Salcudean, Septimiu E.
本文研究了双传感器（两个线阵，正交排列，共面）的位移和应变测量误差。沿每个换能器的波束的沿着位移用于获得二维测量。模拟（5 MHz）和实验（10 MHz）进行比较，测量与一个单一的线性阵列，有和没有角复合。平移模拟表明，与角度复合相比，双探头在轴向和横向方向上的偏置分别增大1.07倍和减小8.0倍。当双传感器之间的角度从90度减小到40度时，对于1%压缩模拟，横向RMS误差范围为2.1到3.9 μ m，而角度复合为9 μ m。模拟的双传感器不对准的1毫米和2度的结果误差小于9 μ m。实验证明，与角度复合相比，双换能器在轴向和横向方向上的偏置分别降低了3.0和5.2倍。(C)2011 Elsevier B.V.保留所有权利。
We study displacement and strain measurement error of dual transducers (two linear arrays, aligned orthogonally and coplanar). Displacements along the beam of each transducer are used to obtain measurements in two-dimensions. Simulations (5 MHz) and experiments (10 MHz) are compared to measurements with a single linear array, with and without angular compounding. Translation simulations demonstrate factors of 1.07 larger and 8.0 smaller biases in the axial and lateral directions respectively, for dual transducers compared to angular compounding. As the angle between dual transducers decreases from 90 degrees to 40 degrees, for 1% compression simulations, the lateral RMS error ranges from 2.1 to 3.9 mu m compared to 9 mu m with angular compounding. Simulation of dual transducer misalignment of 1 mm and 2 degrees result in errors of less than 9 mu m. Experiments demonstrate factors of 3.0 and 5.2 lower biases for dual transducers in the axial and lateral directions respectively compared to angular compounding. (C) 2011 Elsevier B.V. All rights reserved.