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.
Examples of physical and simulated phantom mammograms and microcalcification clusters. (a) Experimental phantom mammogram, where bright circles around the breast are fiducial markers used for ROI extraction. (b) Physical cluster of HA calcifications. (c) Monte Carlo simulation. (d) Synthetic cluster. Arrows indicate individual speck locations in (b) and (d).
