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.
Representative frames from the 120 × 120 digital phantom used in simulation. The phantom contains both static (ellipses and a rectangle) and dynamic (ellipses) features. The frames were selected to capture the distinct phases of the cyclic motion of the dynamic features.
