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.
Side-by-side image comparison showing the effects of preprocessing on the proton (top) and ventilation (bottom) MRI. (a) Uncorrected image showing MR field inhomogeneity and noise. (b) Corresponding corrected image in which the bias effects have been ameliorated.
