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.
R2* and frequency shift (B) change as a function of iron concentration at field strengths of 1.5, 3, and 7 T, respectively. The dots are the data points from each ROI in each individual subject; the solid lines indicate the linear fits. The iron concentration was calculated from experimental equations (1) – (3) with respect to tissue wet weight.
