Change of bubble radius induced by SB-ATC and TB-ATC application. (a) Representative plot of microbubble radius as a function of time during the 10 s SB-ATC application. Ultrasound parameters: center frequency 1.25 MHz, acoustic pressure 0.05 MPa, duration of each pulse 50 ms, and PRF 1 Hz. (b) Representative plots of the radius of the two microbubbles during 10 s TB-ATC application. Ultrasound parameters: center frequency 10 MHz, acoustic pressure 0.12 MPa, pulse duration 10 ms, and PRF 1 Hz. To see this figure in color, go online.