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	Motion artifact cancellation in electrogastrograms using reconstruction of the wavelet transform modulus maxima
	Peng Cheng ; Ye Datian
	2010-05-11 ; 2010-05-11
关键词	Practical Theoretical or Mathematical/ biomedical engineering conjugate gradient methods discrete time systems patient diagnosis wavelet transforms/ motion artifact cancellation electrogastrograms wavelet transform modulus maxima reconstruction gastric signal analyses dyadic discrete time wavelet transform atrous algorithm conjugate gradient algorithm frame theory gastric signal extraction/ A8770F Electrodiagnostics A8770E Patient diagnostic methods and instrumentation A0230 Function theory, analysis E3654 Medical equipment and supplies industry E0210L Numerical analysis
中文摘要	A subject's movements during measurements can generate motion artifacts in electrogastrograms (EGGs). The motion artifacts reduce the accuracy of the gastric signal analyses. This paper describes a motion artifacts cancellation method based on reconstructing the wavelet transform modulus maxima. The data is first decomposed using the dyadic discrete time wavelet transform with the "atrous" algorithm. The modulus maxima corresponding to the motion artifacts are selected and removed according to a rule set. The data without motion artifacts is then reconstructed from the remaining modulus maxima using a conjugate gradient algorithm based on frame theory. Tests show that this method substantially reduces motion artifacts. The results verify that the approach can be used for gastric signal extraction from EGGs, which will promote the application of EGGs in research and clinical practice.
语种	中文 ; 中文
出版者	Tsinghua Univ. Press ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/27735]
专题	清华大学
推荐引用方式 GB/T 7714	Peng Cheng,Ye Datian. Motion artifact cancellation in electrogastrograms using reconstruction of the wavelet transform modulus maxima[J],2010, 2010.
APA	Peng Cheng,&Ye Datian.(2010).Motion artifact cancellation in electrogastrograms using reconstruction of the wavelet transform modulus maxima..
MLA	Peng Cheng,et al."Motion artifact cancellation in electrogastrograms using reconstruction of the wavelet transform modulus maxima".(2010).

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