The onset of bubble vibration

Abstract

Ultrasound contrast agents are used in a diagnostic imaging technique called medical ultrasonography. In this technique, ultrasound is applied to visualize tissue in the human body. It is a popular imaging technique due to a number of advantages, it is (1) a real-time modality (routinely 20-30 frames/s or more), (2) inexpensive, equipment is installed worldwide, (3) portable, equipment can be taken to bedside, ambulance or private practice office, (4) safe, e.g. no ionising radiation is necessary and (5) widely applicable, provided that air (lungs) and bone are avoided, all soft tissue can be imaged