Improved detectability in low signal-to-noise ratio magnetic resonance images by means of a phase-corrected real reconstruction.
We show that for magnetic resonance (MR) images with signal-to-noise ratio (SNR) less than 2 it is advantageous to use a phase-corrected real reconstruction, rather than the more usual magnitude reconstruction. We discuss the results of the phase correction algorithm used to experimentally verify the result. We supplement the existing literature by presenting closed form expressions (in an MR context) for the probability distribution and first moments of the signal resulting from a magnitude reconstruction.
Bernstein
M A
MA
Department of Medical Physics and Radiology, University of Wisconsin, Madison 53706.
Thomasson
D M
DM
Perman
W H
WH
D000465:Algorithms; D006283:Health Physics; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008279:Magnetic Resonance Imaging / Q000379:methods*