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.
Impedance response for phantom with porosity 0.16% obtained on Day 1 (black circle solid line), Day 1 after three hours (black circle dashed line), Day 1 after six hours (black circle dotted line), Day 2 (red square solid line), Day 3 (cyan triangle solid line), and Day 3 after four hours (cyan triangle dashed line).
