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Title: Automatic frequency alignment and quantitation of single resonances in multiple magnetic resonance spectra via complex principal component analysis
Authors: Van Huffel, Sabine ×
Wang, Yu
Vanhamme, Leentje
Van Hecke, Paul #
Issue Date: Sep-2002
Publisher: Academic press inc elsevier science
Series Title: Journal of magnetic resonance (San Diego, Calif. : 1997) vol:158 issue:1-2 pages:1-14
Abstract: Several algorithms for automatic frequency alignment and quantitation of single resonances in multiple magnetic resonance (MR) spectra are investigated. First, a careful comparison between the complex principal component analysis (PCA) and the Hankel total least squares-based methods for quantifying the resonances in the spectral sets of magnetic resonance spectroscopy imaging (MRSI) spectra is presented. Afterward, we discuss a method based on complex PCA plus linear regression and a method based on cross correlation of the magnitude spectra for correcting frequency shifts of resonances in sets of MR spectra. Their advantages and limitations are demonstrated on simulated MR data sets as well as on an in vivo MRSI data set of the human brain.
URI: 
ISSN: 1090-7807
Publication status: published
KU Leuven publication type: IT
Appears in Collections:ESAT - STADIUS, Stadius Centre for Dynamical Systems, Signal Processing and Data Analytics
Electrical Engineering - miscellaneous
Radiology
× corresponding author
# (joint) last author

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