Self-correction of proton spectroscopic images for gradient eddy current distortions and static field inhomogeneities

Johnson, G., Jung, K. J., Wu, E. X. and Hilal, S. K. (1993) Self-correction of proton spectroscopic images for gradient eddy current distortions and static field inhomogeneities. Magnetic Resonance in Medicine, 30 (2). pp. 255-261. ISSN 0740-3194

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Abstract

A postprocessing method of correcting for gradient eddy current distortions and inter-voxel static field inhomogeneity in spectroscopic imaging is presented. Data is acquired normally and all spatial processing is performed. The FID in each voxel is then digitally filtered to extract the signal from a single reference line. Phase multiplying the original FID by the phase of this reference signal corrects for gradient eddy currents and static field offsets. Computer simulations show that the method is robust with respect to noise, filter bandwidth and the presence of small lines close to the reference line. The method is demonstrated on proton spectroscopic images of phantoms.

Item Type: Article
Uncontrolled Keywords: proton spectroscopic imaging,gradient eddy currents,static field in homogeneity,postprocessing correction
Faculty \ School: Faculty of Medicine and Health Sciences > Norwich Medical School
University of East Anglia > Faculty of Medicine and Health Sciences > Research Groups > Clinical Science and Trials
Depositing User: Pure Connector
Date Deposited: 07 Oct 2015 16:00
Last Modified: 25 Jul 2018 11:08
URI: https://ueaeprints.uea.ac.uk/id/eprint/54578
DOI: 10.1002/mrm.1910300217

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