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.
Placement of the ultrasound probe at six locations on the chest. a zone 1 is 2 cm below the anterior mid-clavicular line on the right side of the chest; b zone 2 is 4 cm inferior and 4 cm lateral to zone 1; c zone 3 is 2 cm inferior to zone 2 along the mid-axillary line. d–f The identical positions on the left side of the chest
