1B-5 Surface Modes of Ultrasound Contrast Agent Microbubbles

1B-5 Surface Modes of Ultrasound Contrast Agent Microbubbles
复制标题

1B-5 超声造影剂微泡的表面模式

DOI:
--
复制
发表时间:
2006
期刊:
2006 IEEE Ultrasonics Symposium
影响因子:
--
通讯作者:
D. Lohse
D. Lohse
中科院分区:
--
文献类型:
--
作者:
S. van der Meer;B. Dollet;D. Goertz;N. de Jong;M. Versluis;D. Lohse

文献摘要

被引文献

相似文献

我们研究了用于超声造影剂的涂层微泡的非球形振荡(表面模)。结果表明,在1.7 MHz的频率下,100kPa的声压足以激发半径在2-4微米之间的表面模。表面模式的发展表现为参数不稳定性。我们推导了考虑壳体粘弹性影响的演化方程。我们确定了一个临界半径(1到3微米,取决于模数),在该半径以下不会出现表面模式
We study non-spherical oscillations (surface modes) of the coated microbubbles used in ultrasound contrast agents. We show that an acoustic pressure of 100 kPa, at a frequency of 1.7 MHz, is sufficient to excite surface modes for radii between 2 and 4 mum. Surface modes develop as a parametric instability. We derive their evolution equation accounting for the effect of the shell viscoelasticity. We identify a critical radius (1 to 3 mum, depending on the mode number) below which no surface mode can occur