Cavitation threshold determination —Can we do it?

As clinical applications, which harness acoustic cavitation, become more commonplace, it becomes more and more important to be able to determine the threshold pressures at which it is likely to occur. In our studies, we have used a suite of different detection techniques in an effort to determine these thresholds. These include passive cavitation detection, transducer impedance monitoring, and visual appearance. Different methods of acoustic signal processing have been compared. The resultant cavitation thresholds will be discussed.