Fig. 6From: Application of acoustic droplet vaporization in ultrasound therapyShadowgraphs of bubbles dynamics using a 20-cycle 1 MHz pulse of 1.45 MPa rarefactional pressure show the droplet vaporization and fully expansion within 1–2 μs (a–d), microbubble fusion (b–d) (white arrows), and radiation force (d–i), scale bars are 5 μm, with courtesy of [34]Back to article page