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首页> 外文期刊>Japanese journal of applied physics >Effect of shear wave propagation on estimation of heating distribution by high-intensity focused ultrasound using acoustic radiation force imaging
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Effect of shear wave propagation on estimation of heating distribution by high-intensity focused ultrasound using acoustic radiation force imaging

机译：剪切波传播对光学辐射力成像的高强度聚焦超声估算加热分布估计的影响

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摘要

In a high-intensity focused ultrasound (HIFU) treatment, to predict a HIFU heat source is important for the safety and efficiency. Acoustic radiation force impulse imaging using a HIFU burst is known as a method for the prediction from the distribution of the tissue displacement in a homogeneous tissue. However, the distribution induced by HIFU radiation force expands as the shear wave propagates. In this study, the effect of the shear wave propagation on the estimation of the heat source distribution was investigated by changing the burst duration and intensity of HIFU. The results showed that a shorter HIFU burst provided the higher accuracy of the prediction, improving the spatial resolution. It is concluded that the estimation method has the potential to estimate in a wide range of HIFU energy and requires one to obtain the distribution of displacements immediately after the start of HIFU burst exposure. (C) 2020 The Japan Society of Applied Physics
机译：在高强度聚焦超声（HIFU）处理中，预测HIFU热源对于安全性和效率来说是重要的。使用HIFU突发的声学辐射力脉冲成像称为从均匀组织中的组织位移的分布预测的方法。然而，随着剪切波传播，HIFU辐射力引起的分布膨胀。在该研究中，通过改变HIFU的突发持续时间和强度来研究剪切波传播对热源分布估计的影响。结果表明，较短的HIFU突发提供了更高的预测精度，提高了空间分辨率。得出结论，估计方法有可能在各种HIFU能量中估计，并且需要一个在HIFU突发暴露后立即获得位移的分布。 （c）2020日本应用物理学会

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