一种基于复数主成分分析的磁共振波谱量化预处理方法

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Abstract This paper proposes a method that can automatically obtain common lineshape in the spectrum data set based on Complex Principal Component Analysis(CPCA). which can correct frequency shifts and damping factor shifts effectively. This method aligns frequency at first, then extends CPCA to the correction of damping factor shifts in a single resonant peak across spectra. Through this method, frequency and damping factor alignment are successfully achieved. In terms of computation time and estimation precision this method is significantly better than that of PCA.

Key words： Complex Principal Component Analysis（CPCA） Magnetic Resonance Spectroscopy（MRS） Frequency alignment Damping factor alignment

Received: 01 August 2003

PACS:	TN391.4
	R8

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	Zeng Wei-ming
	Liang Xiao-yun
	Luo Li-min

Cite this article:

Zeng Wei-ming,Liang Xiao-yun,Luo Li-min. A Preprocessing Method for Quantitation of Magnetic Resonance Spectroscopy Based on Complex Principal Component Analysis[J]. , 2005, 27(1): 51-55 .

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http://jeit.ie.ac.cn/EN/ OR http://jeit.ie.ac.cn/EN/Y2005/V27/I1/51