Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Characteristics of common ultrasound contrast agents used in liver imaging
| Agent | Manufacturer | Resonance range (MHz) | Chemical composition | MI level |
| Levovist® | Schering | 2-3 | Lipid | High > 0.6 |
| Air (galactose-based) | ||||
| Definity® | BMS | 1.5-4 | Liposome | Low < 0.4 |
| Perfluorocarbon | ||||
| SonoVue® | Bracco | 1.8-3.2 | Phospholipid | Low < 0.4 |
| Sulfur hexafluoride | ||||
| Sonazoid® | GE healthcare | 2-8 | Lipid | Low < 0.4 |
| Perfluorocarbon |
