Figure 4.
Photograph of the cubic phantoms installed to confirm the rotational accuracy of the prototype device by Varian cone‐beam computed tomography imaging system. The tungsten sphere of 1 mm at diameter was inserted into each acrylic cube
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.