Abstract
Microbubbles are used as contrast agents for ultrasound imaging. For the clear image it is essential to take a real understanding of the dynamics of them in ultrasound field. When the microbubbles are subjected to the ultrasonic oscillation field, it takes on strong nonlinearity as the increase of ambient pressure amplitude. Since these dynamics of bubbles are strongly influenced by the thermal phenomena inside them, it is necessary to take these phenomena into account to analyze the behavior of the micro bubbles precisely. The volumetric change and the acoustic emission from a single microbubbles and bubble cluster are numerically simulated.
