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在双频超声波下,在粘弹性组织中散射多个气泡的声场

Yu Wang¹, Dehua Chen¹, Pengfei Wu¹

¹State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China; University of Chinese Academy of Sciences, Beijing 100049, China; Beijing Engineering Research Center of Sea Deep Drilling and Exploration, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China.

Ultrasonics sonochemistry

|September 8, 2023

概括

医学超声波中的泡相互作用显著改变了声学散射. 这项研究揭示了泡大小和超声波频率如何影响这些效应,影响诊断成像.

科学领域:

声学声学在声学方面
生物医学工程生物医学工程
医疗成像医学成像

背景情况:

气泡在医疗应用中非常重要,因为它们的声波分散.
集群内的气泡相互作用会改变整体声场.
了解这些相互作用是准确超声波诊断的关键.

研究的目的:

以数值分析气泡相互作用对分散声压的影响.
为了研究双频超声波对泡集群的影响.
为了比较带有和没有泡相互作用考虑的声学散射.

主要方法:

数字化解决粘弹性组织中的气泡的动态方程.
在双频超声波下分析分散的声压.
将分散波的频谱进行比较.

主要成果:

气泡相互作用效应 (分散声压的抑制/扩大) 取决于气泡半径和事件频率.
在特定频率下,共振气泡表现出比非共振气泡更强的效应.
对于低气泡密度,气泡集群的响应接近个体气泡的行为.

结论:

气泡相互作用是医学超声波声波散射现象的一个关键因素.
气泡半径和超声波频率是影响相互作用效应的关键参数.
数字建模为改善超声波应用提供了对气泡集群动态的洞察.

关键词:

声波散射是一种声学散射.双频超声波是双频的超声波多个泡的多个泡粘弹性组织粘弹性组织.

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