Fig 3.
(A) Definition of zones of catheter tip placement on conventional chest radiographs. (B) Relative distribution of the number of placed catheters according to zones A, B, C or D in the reference (white) and test cohort (black).
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.