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.
Color mode 2D (axial-lateral, centered at 4 cm depth) screen displays as a function of onscreen displayed color flow receive gain setting (noted above each image). Color and dimensional scale bar are shown on the right. The dimensional scale bar shows a 1 cm distance with a 5 mm subdivision.
