Title: Fast removal of residual water in proton spectra
Authors: Vanhamme, Leentje ×
Fierro, RD
Van Huffel, Sabine
de Beer, R #
Issue Date: Jun-1998
Publisher: Academic press inc
Series Title: Journal of magnetic resonance vol:132 issue:2 pages:197-203
Abstract: Quantification of metabolites in H-1 spectra is difficult because of the presence of an unwanted water signal. Preprocessing, or removing the water contribution of a H-1 spectrum, in the time domain is usually done using the state-space approach HSVD. HSVD removes the residual water and its side lobes, thereby reducing the baseline for the metabolites of interest and allowing subsequent data analysis using more sophisticated nonlinear least squares algorithms. However, the HSVD algorithm is computationally expensive because it estimates the signal subspace using the singular value decomposition (SVD). We show here that replacing the SVD by a low-rank revealing decomposition speeds up the computations without affecting the accuracy of the wanted parameter estimates. (C) 1998 Academic Press.
ISSN: 1090-7807
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Electrical Engineering - miscellaneous
ESAT - STADIUS, Stadius Centre for Dynamical Systems, Signal Processing and Data Analytics
× corresponding author
# (joint) last author

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