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.
Coronal T2*-weighted 7 T magnitude (left) and phase gradient echo images showing phase effects of severe spatial B0 variations. Both static and dynamic B0 variations in inferior brain areas pose a serious obstacle to structural and functional imaging. Data courtesy of Thomas Witzel, MGH.
