Independent component analysis for synthetic aperture magnetometry in magnetocardiography

  • Authors:

  • Kiwoong Kim;Yong-Ho Lee;Hyukchan Kwon;Jin-Mok Kim;Jang-Ho Bae

  • Affiliations:

  • Biomagnetism Research Center, Korea Research Institute of Standards and Science, 1 Doryong, Yuseong-ku, Daejeon 305-340, Republic of Korea;Biomagnetism Research Center, Korea Research Institute of Standards and Science, 1 Doryong, Yuseong-ku, Daejeon 305-340, Republic of Korea;Biomagnetism Research Center, Korea Research Institute of Standards and Science, 1 Doryong, Yuseong-ku, Daejeon 305-340, Republic of Korea;Biomagnetism Research Center, Korea Research Institute of Standards and Science, 1 Doryong, Yuseong-ku, Daejeon 305-340, Republic of Korea;Heart Center, Konyang University Hospital, Daejeon, Republic of Korea

  • Venue:
  • Computers in Biology and Medicine
  • Year:
  • 2006

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Abstract

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.