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.
Quality of CT contours: This figure illustrates three typical example of poor quality CT contours, where the contours do not enclose the full parotids (left and right parotid in the first column, right parotid in the second column) or are fully missing (left parotid in the last column).
