FIG. 2.
The definition of the gantry geometry in a cylindrical coordinate system. The locations of the origin, the detector’s focal center, and the focal spot are marked as the purple dot, the yellow diamond, and the green triangle, respectively.
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.