Cavitation refers to

Cavitation refers to

• A. Pressure changes when gas spins and changes
• B. Heating of tissue due to absorption
• C. Elastic deformation of collagen fibers
• D. Electrical disruption of cell membranes

Answer: (A)

Cavitation occurs when pressure changes in a liquid cause dissolved gas to come out of solution and form bubbles that grow and then violently collapse under ultrasound. This bubble dynamics creates localized mechanical effects in tissue, distinct from purely thermal effects (heating from energy absorption), from elastic stretching of collagen fibers, or from electrical disruption of cell membranes seen with other modalities. The key idea is that alternating pressure waves drive the formation and collapse of gas-filled bubbles, which defines cavitation.

Cavitation occurs when pressure changes in a liquid cause dissolved gas to come out of solution and form bubbles that grow and then violently collapse under ultrasound. This bubble dynamics creates localized mechanical effects in tissue, distinct from purely thermal effects (heating from energy absorption), from elastic stretching of collagen fibers, or from electrical disruption of cell membranes seen with other modalities. The key idea is that alternating pressure waves drive the formation and collapse of gas-filled bubbles, which defines cavitation.