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In liquid, these high-frequency waves cause the formation of microscopic bubbles, or cavitation .
The formation of such a bubble is called cavitation .
The incidence of cavitation in pulmonary lung metastasis is approximately 4%.
Cavitation manifests itself in at least two modes; stable cavitation (slow, periodic oscillations of gas bubbles) and transient cavitation .
Sonoluminescence arises from acoustic cavitation - the formation, growth and implosion of small gas bubbles in a liquid blasted with sound waves above 18,000 cycles per second.
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