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. 2018 Dec 31;62(1):10–26. doi: 10.3340/jkns.2018.0180

Fig. 3.

Fig. 3.

A : Schematic illustration of stable cavitation. As the acoustic wave propagates longitudinally, it alternates between compression and expansion, with changing acoustic pressures along the sinusoidal curve. When microbubbles are subjected to pressures below the inertial cavitation threshold, they contract during compression and expand during rarefaction, resulting in stable oscillation. B : With ultrasonic pressure above the inertial cavitation threshold, microbubbles initially oscillate but eventually implode at rarefaction pressure.