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.
Joint histogram of an aligned re-projection of a noisy reconstructed NCAT phantom (along vertical axis) with the actual projection (along horizontal axis) (a) without filtering and (b) with filtering. The bin (0, 0) is at the top left corner.
