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.
Maps of variances obtained from the reconstructed phantom. For each geometry the 256 random knots enclosed within the reconstruction were extracted and aligned with the exact orientation parameters used during the generation of the phantom. The aligned knots were compared pixel by pixel with their average 3D map. The figure presents the variance of the difference maps in common scale: (a) single axis geometry; (b) dual axis; (c) conical geometry. See table 2, columns 3 and 4 (rmsd1).
