Frequency-domain quantification based on the singular value decomposition and frequency-selection for magnetic resonance spectra
Men, K.; Quan, H.; Yang, P.; Cao, T.; Li, W.
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi 27(2): 249-252
2010
ISSN/ISBN: 1001-5515 PMID: 20481295 Document Number: 642062
The frequency-domain magnetic resonance spectroscopy (MRS) is achieved by the Fast Fourier Transform (FFT) of the time-domain signals. Usually we are only interested in the portion lying in a frequency band of the whole spectrum. A method based on the singular value decomposition (SVD) and frequency-selection is presented in this article. The method quantifies the spectrum lying in the interested frequency band and reduces the interference of the parts lying out of the band in a computationally efficient way. Comparative experiments with the standard time-domain SVD method indicate that the method introduced in this article is accurate and timesaving in practical situations.