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.
A CT image with a relatively large display field of view of 24 cm shows the saline bags surrounding the airway phantom. The index of the eight airways is labeled in the image. ROIs used for measuring the contrast-to-noise ratio of Airway 1 are illustrated in the image.
