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Estimation of the noise in magnitude MR images
J Sijbers1, A J den Dekker, J Van Audekerke
1Department of Physics, University of Antwerp, Belgium. sijbers@ruca.ua.ac.be
Magnetic Resonance Imaging
|January 22, 1998
Abstract:
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.