Microbubbles are intravenous contrast agents used in contrast-enhanced ultrasound. Microbubble contrast agent is different than 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 metabolized in the liver and the gas is exhaled.

  • right-to-left vascular shunt: pre-contrast screening not currently recommended
  • allergic reaction
  • intra-arterial injection
Share article

Article information

rID: 36952
Section: Physics
Synonyms or Alternate Spellings:
  • Microbubbles - ultrasound
  • Microbubbles on ultrasound

Support Radiopaedia and see fewer ads

Updating… Please wait.

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.