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.
Modified Eftedal-Brubakk score for ultrasound-detected bubbles.
| Score | Definition |
| 0 | No visible bubbles |
| 1 | Occasional bubbles |
| 2 | At least 1 bubble every 4 heart cycles |
| 3 | At least 1 bubble every heart cycle |
| 4 | Not more than one third of every image |
| 5 | Not more than two thirds of every image |
| 6 | Near whiteout; individual bubbles still discerned |
| 7 | Whiteout; individual bubbles can’t be discerned |
