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.
Complete vascular ring around the trachea and the oesophagus formed by a double aortic arch. a Diagrammatic representation of the abnormality. b Corresponding contrast-enhanced axial image at the level of the double aortic arch, the right part being the dominant. c 3-D VR image of the double aortic arch from a left anterior oblique view. Volume slab (d) and coronal MPR (e) additionally demonstrate the resulting significant narrowing of the trachea
