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.
Slice of the high dose acquisition (20-mGy MGD) of sample A obtained (a) without, (b) with two materials, and (c) with the single-material PhR. The sample diameter is about 9 cm. In (a) the ROIs for the evaluation of the CNR (circles) and spatial resolution (rectangle) are reported. The insets on the top right of each image show the edge profiles for FWHM evaluation.
