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.
Sonography of left the internal jugular vein before the surgical procedure, mouth opened. (a) transverse imaging, (b) transverse imaging, good flow through the vein as demonstrated by blue color, (c) longitudinal imaging; IJV: internal jugular vein, CA: carotid artery, SCM: sternocleidomastoid muscle.
