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.
A: Conventional radiography of PS, PVC, PET, aluminum, paper and silicone samples at 100 kV showing thickness-dominated contrast; B: multi-energy image (coefficients cdr + ddr) showing material contrast; C: color representation of the calculated coefficients showing material and thickness contrast.
