Motion of a solid sphere in a viscoelastic medium in response to applied acoustic radiation force: Theoretical analysis and experimental verification
Motion of a solid sphere in a viscoelastic medium in response to applied acoustic radiation force: Theoretical analysis and experimental verification
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DOI：
10.1121/1.2774754
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发表时间：
2007-10-01
影响因子：
2.4
通讯作者：
Emelianov, Stanislav Y.
中科院分区：
文献类型：
--
作者：
Aglyamov, Salavat R.;Karpiouk, Andrei B.;Emelianov, Stanislav Y.
研究了粘弹性介质中刚性球在短时声辐射力作用下的运动。首先进行了理论和数值研究。为了验证所开发的模型，使用嵌入到组织样的，基于凝胶的幻影的不同的机械性能的各种直径和密度的刚性球体进行实验。使用1.5 MHz、单元件、聚焦换能器来施加所需的辐射力。另一个单一的元素，在25 MHz工作的聚焦换能器被用来跟踪的位移的球体。本研究的结果表明，理论预测和实验测量之间的良好协议。所建立的理论模型准确地描述了粘弹性介质中固体球在声辐射力作用下的位移。(C)2007年，美国声学学会。
The motion of a rigid sphere in a viscoelastic medium in response to an acoustic radiation force of short duration was investigated. Theoretical and numerical studies were carried out first. To verify the developed model, experiments were performed using rigid spheres of various diameters and densities embedded into tissue-like, gel-based phantoms of varying mechanical properties. A 1.5 MHz, single-element, focused transducer was used to apply the desired radiation force. Another single-element, focused transducer operating at 25 MHz was used to track the displacements of the sphere. The results of this study demonstrate good agreement between theoretical predictions and experimental measurements. The developed theoretical model accurately describes the displacement of the solid spheres in a viscoelastic medium in response to the acoustic radiation force. (C) 2007 Acoustical Society of America.