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.
Distribution of magnetic susceptibility in the putamen (Pt) and globus pallidus (Gp). White indicates a high (paramagnetic) susceptibility. The putamen, marked in black, showing increase of paramagnetic susceptibility expressed in parts per billion (ppb), across participants of 23, 50 and 67 years of age. Gp, on the medial lateral side from the Pt, shows high levels of susceptibility across the three subjects. Susceptibility is presented in ppb = parts per billion.
