Independent component analysis for synthetic aperture magnetometry in magnetocardiography.
We propose independent component analysis (ICA) as a pre-process for synthetic aperture magnetometry (SAM) in magnetocardiogram. SAM is a very useful method for source current imaging. However, SAM cannot separate one source from the others when there are time-correlated multi-sources, especially for successively active sources. The proposed method compensates the intrinsic drawback of SAM with ICA, which is feasible for 3-D imaging of the myocardial current distribution of specific temporal features. By using our method, we successfully localized an accessory pathway of a patient suffering from the WPW syndrome.
Kim
Kiwoong
K
Biomagnetism Research Center, Korea Research Institute of Standards and Science, 1 Doryong, Yuseong-ku, Daejeon 305-340, Republic of Korea. kwkim@kriss.re.kr
Lee
Yong-Ho
YH
Kwon
Hyukchan
H
Kim
Jin-Mok
JM
Bae
Jang-Ho
JH
D000328:Adult; D000465:Algorithms; D004562:Electrocardiography / Q000379:methods*; D006801:Humans; D008280:Magnetics; D008297:Male; D014927:Wolff-Parkinson-White Syndrome / Q000175:diagnosis