"Microbubbles are intravenous contrast agents used in contrast-enhanced ultrasound. Microbubble contrast agent is different to the agitated saline contrast agent often used in echocardiographic studies. Microbubbles consist of a gas surrounded by a lipid, lipopolymer, or polymer shell. They range from 2-10 µm. Microbubble shells are metabolised in the liver, and the gas is exhaled."
Expected headings
"Contraindications"