Low-frequency and high-intensity ultrasonic may play a better role in Ultrasound Contrast Agent drug delivery system in vivo.

For the ability to carry drugs and release them at target areas, Ultrasound Contrast Agent (UCA) can be a new vector for drug delivery. Ultrasound makes UCA ruptured so that the drugs it carried can be released. The intensity of medical ultrasound varies wildly. Although low-intensity ultrasound is often used in vitro studies, we think in vivo, the application of high-intensity ultrasound will have better future prospects for drug delivery than low-intensity ultrasonic.