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.
Estimates of water (lower half) and calcium (upper half) concentrations obtained for various phantom configurations, shown for one example sector of the digital phantom (50 mg/mL calcium). Individual bars represent vertical sections of the phantom.
