Miller D L
Ultrasonics. 1984 Nov;22(6):261-9. doi: 10.1016/0041-624x(84)90042-8.
A small body of gas which is stabilized against dissolution in a liquid by a supportive structure may oscillate in response to an ultrasonic field and this form of cavitation is termed gas body activation. Linear theory describes the response of gas-filled intercellular channels in plant tissue and of gas-filled micropores in thin sheets of plastic. Calculations from this theory yield good agreement with indirect observations of resonance frequencies and rough agreement with direct measures of aggregate response (transmission and reflection coefficients). Studies of gas body activation in biological systems should allow quantitative analysis of cavitation bioeffects for relatively low-intensity ultrasound applications.
一小团气体通过支撑结构稳定而不溶于液体，它可能会响应超声场而振荡，这种空化形式被称为气体激活。线性理论描述了植物组织中充满气体的细胞间通道以及塑料薄片中充满气体的微孔的响应。根据该理论进行的计算与共振频率的间接观测结果吻合良好，与总响应（透射和反射系数）的直接测量结果大致相符。对生物系统中气体激活的研究应能对相对低强度超声应用中的空化生物效应进行定量分析。
