Fig. 3.

(a-i–vi) Representative images from side view imaging sequences, capturing microbubble cavitation activity from the first significant inflation, over the two subsequent cycles of focused ultrasound, at various lateral offset distances from the propagation axis. (b) An on-axis needle hydrophone measurement of the first cycles of the focused ultrasound burst (over the duration of side view imaging), at a peak negative pressure of 1.5 MPa.