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.
Histogram of IQ speckle amplitude distribution for a single volume. Before wall filter (right distribution) the signal is dominated by tissue, after wall filter it is dominated by the lower amplitude blood signal (left). The curve fits (red lines) reflect a Rayleigh distribution with two independent variables, mean and amplitude. [36]
