[Frequency-domain quantification based on the singular value decomposition and frequency-selection for magnetic resonance spectra].
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.
Men
Kuo
K
Lab of Medical Physics, College of Physics and Technology, Wuhan University, Wuhan 430072, China.
Quan
Hong
H
Yang
Peipei
P
Cao
Ting
T
Li
Weihao
W
D000465:Algorithms; D001921:Brain / Q000378:metabolism*; D003198:Computer Simulation; D005583:Fourier Analysis; D006801:Humans; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D012815:Signal Processing, Computer-Assisted