Estimation of the noise in magnitude MR images.
Magnitude magnetic resonance data are Rician distributed. In this note a new method is proposed to estimate the image noise variance for this type of data distribution. The method is based on a double image acquisition, thereby exploiting the knowledge of the Rice distribution moments.
Sijbers
J
J
Department of Physics, University of Antwerp, Belgium. sijbers@ruca.ua.ac.be
den Dekker
A J
AJ
Van Audekerke
J
J
Verhoye
M
M
Van Dyck
D
D
D008279:Magnetic Resonance Imaging; D008433:Mathematics