Ultrasound imaging active based on photoacoustic contrast agent

摘要

Electromagnetic energy is applied to vibrate the bubbles thereby, then sound waves of high frequency is devoted to produce echoes to provide imaging of the area by analyzing and receive (260). To create a bubble, with better pulsing techniques, novel sensitivity, prior microbubbles or provide nano bubbles inside the resulting energy to be supplied, outside the vascular system energy, the (216) can be transmitted through, nano-particles of the contrast agent (232), obtained, thereby providing a supply of the target molecule and quantification of vascular permeability is applied. It may include a partial evaporation and absorbent portion, such as by near infrared laser irradiation (204), the particles causes a phase transition that causes the bubble. The echoes can occur in response to (220) ultrasonic interrogation of the contrast agent is activated, a permanent process, which may involve pulse inversion, contrast pulse sequence or imaging power modulation. In order to facilitate the timing of bubble activation contrast agent may be mixed with micro-bubbles based on the ultrasound contrast agent.