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1H-spectroscopic imaging with read gradient during acquisition in inhomogeneous fields: analysis, measurement strategy, and data processing.
1997 (English)In: Magnetic Resonance Materials in Physics, Biology and Medicine, ISSN 0968-5243, E-ISSN 1352-8661, Vol. 5, no 3, 201-12 p.Article in journal (Refereed) Published
Abstract [en]

The proton magnetic resonance spectroscopic imaging techniques that use read gradient during acquisition produce proton spectra with high spatial and moderately high spectroscopic resolution in a reasonable time for in vivo applications. These techniques suffer mainly from the spatial and spectral distortions caused by the convolution of spectral/spatial information (chemical-shift artifacts) and from the spectral shifts caused by static magnetic field inhomogeneities. The investigators analyze the chemical-shift artifacts in the presence of nonnegligible static magnetic field inhomogeneities and propose a postdetection processing scheme to correct for such effects. Spectral artifacts caused by chemical shifts, spectral line overlapping, streak broadening, and magnetic field inhomogeneities are discussed. The postdetection data processing scheme is demonstrated on measurements of a phantom as well as a human leg.

Place, publisher, year, edition, pages
1997. Vol. 5, no 3, 201-12 p.
Keyword [en]
magnetic resonance spectroscopy
National Category
Medical and Health Sciences
Research subject
Radiology
Identifiers
URN: urn:nbn:se:uu:diva-109812PubMedID: 9351024OAI: oai:DiVA.org:uu-109812DiVA: diva2:300452
Available from: 2010-02-26 Created: 2009-10-26 Last updated: 2017-12-12

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