Estimation of the noise in magnitude MR images

Magn Reson Imaging. 1998;16(1):87-90. doi: 10.1016/s0730-725x(97)00199-9.


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.

MeSH terms

  • Magnetic Resonance Imaging*
  • Mathematics