Figure 1

The scheme of acoustic droplet vaporization (ADV), optical droplet vaporization (ODV) and magnetic droplet vaporization (MDV) processes. Schematic illustration of three representative vaporization principles for intelligent stimuli-responsive phase transformation to enhance the performance and efficiency of ultrasound-based diagnostic imaging and therapy. These three modalities include ADV, ODV and MDV using ultrasound, laser and magnetic field as the external triggers, respectively.