High-speed ultrasound imaging of laser-induced cavitation bubbles

While the ultrasound and cavitation based therapies have mushroomed over the years, there is a lack of online monitoring the cavitation bubble dynamics in biological tissue. {\color{black}Here we demonstrate that with ultrasonic plane wave imaging the fast dynamics of single cavitation bubbles can be resolved non-invasively in a tissue mimicking material}. Due to the high contrast of the bubbles, plane wave compounding is not necessary and frame rates of up to 74 kHz can been achieved with a research grade ultrasound scanner. Comparison with simultaneous high-speed imaging demonstrates excellent agreement of both measurement modalities in water and in a tissue mimicking material.