Improving the Performance of Phase-Change Perfluorocarbon Droplets for Medical Ultrasonography: Current Progress, Challenges, and Prospects
Figure 8
Vaporization and expansion properties of volatile PFC droplets vaporized with a 2-cycle sinusoid at 8 MHz. (a) A DFB droplet near 2.7 μm in diameter vaporizes and expands to a maximum near 15.5 μm in diameter within 2 μs and eventually settles to a smaller resting diameter. (b) An OFP droplet near 2 μm in diameter expands to a maximum near 14.6 μm in diameter and settles to a smaller resting diameter. In both cases, the droplet oscillations occurred over the course of 10 μs after vaporization. Scale bar represents 5 μm. Reproduced from [93] with permission from the Institute of Physics in Engineering and Medicine.
