An imaging agent for ultrasound to be administered into a vein is provided. More specifically, an imaging agent for ultrasound containing microbubbles, which has a long-life and is stable within a human body even after is has passed through a lung, and a method for producing the same, are provided....http://www.google.es/patents/US5985247?utm_source=gb-gplus-sharePatente US5985247 - Method for the production of microbubble-type ultrasonic contrast agent by surfactant
Method for the production of microbubble-type ultrasonic contrast agent by ...