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Potential degradation in image quality due to selective averaging of phase-encoding lines in Fourier transform MRI
1Department of Radiology, University of Virginia School of Medicine, Charlottesville 22908.
Magnetic Resonance in Medicine
|May 1, 1991
Abstract:
The properties of the image noise for selective averaging of phase-encoding lines have been investigated. For a given acquisition time, selective averaging results in a signal-to-noise ratio penalty compared to averaging all lines equally. In addition, selective averaging yields a non uniform distribution of noise characteristics in spatial frequency space, which can result in a change in the texture of the image noise.