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.
Anatomical classification of the pulmonary vascular tree, and segment names. Anatomy is in accordance with a computed tomogram of a healthy Danish volunteer. Segments are color coded. Panel A: anterior–posterior projection. Panel B: left anterior oblique (LAO) 60° projection. Segment A7 on the left side is variable; if present, it typically occurs in a common branch with A8.
