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.
Transverse (a) and oblique transverse view (b) at the level of the suprasternal notch (SSN) showing trachea, thyroid gland, and oesophagus. TG = Thyroid gland, Tr = Trachea, Trc = Tracheal cartilage, A–M = Air–mucosal interface, CTA = Comet tail artefact, ICA = Internal carotid artery, Eo = Oesophagus, SCM = Sternocleidomastoid muscle, SM = Strap muscle, VB = Vertebral body
