Estimation of the Speed of Ultrasound Propagation in Biological Tissues: A Beam-Tracking Method
Estimation of the Speed of Ultrasound Propagation in Biological Tissues: A Beam-Tracking Method
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生物组织中超声传播速度的估计：波束跟踪方法
DOI：
10.1109/t-uffc.1986.26843
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
J. Ophir
中科院分区：
文献类型：
--
作者：
J. Ophir
描述了一种用于估计组织中声速的脉冲回波Heam跟踪方法。我们已经表明，在使用几个几厘米长的回波波形的均匀散射泡沫幻影中，可以获得k 0.5%的精度和l %的精度。如果1）使用更均匀的组织或模型，2）检查更多不相关的回波波形，3）延长每个回波波形的长度，则可以提高精度。由于折射层的估计的潜在影响进行了讨论。
A pulse-echo heam-tracking method for the estimation of the speed of sound in tissue is described. We have shown that precision on the order of k0.5 percent and accuracy on the order of l percent are obtainable in uniformly scattering foam phantoms using several echo-waveforms which are several centimeters long. The precision could he improved if 1) more uniform tissues or phantoms are used, 2) more uncorrelated echo-waveforms are examined, and 3) the length of each echo-waveform is extended. The potential effects due to refractive layers on the estimation are discussed.