Measurement of Cardiac Magnetic Field Vector

  • Y. Sakauchi
  • H. Kado
  • N. Awano
  • N. Kasai
  • M. Higuchi
  • K. Chinone
  • M. Nakanishi
  • K. Ohwada
  • S. Kariyone

Abstract

The component of Magnetocardiogram(MCG) perpendicular to the anterior chest has been recorded in almost all the reports except a few of them. The conventional method is to detect the location of equivalent current dipole by using the iso-magnetic field mapping over the anterior chest. This method is unavailable when the order and/or number of poles increase. It is significant to carry out vector measurement of MCG to estimate the current elements associated with intracardiac electrical events more precisely. We carried out vector measurement of MCG by using vector SQUID system and tried to estimate the cardiac activities by the distribution of magnetic field vector over the anterior chest.

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References

  1. 1.
    Nakanishi,M., Kasai, N., et al: DC-SQUID MAGNETOMETER SYSTEM FOR DETECTING VECTOR VALUE OF MAGNETIC FIELD. IEEE TRANSACTION ON MAGNETICS, 25–2: 1162–1165, 1989CrossRefGoogle Scholar
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    Taccardi, B.: Distribution of heart potential on the thoracic surface of normal human subjects. Circulation Res. 12: 341–352, 1963PubMedGoogle Scholar
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    Shirae,K., Furukawa, H., Katayama, M.: MEASUREMENT AND CHARACTERISTICS OF VECTOR MAGNETOCARDIOGRAPHY. 6th international conference on Biognetism, Tokyo: 294–297, 1987Google Scholar
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    Durrer,D., Van Dam, R.T., Freud, G.E., et al: Total excitation of the isolated human heart. Circulation, 26: 1050–1055, 1987Google Scholar

Copyright information

© Plenum Press, New York 1989

Authors and Affiliations

  • Y. Sakauchi
    • 1
  • H. Kado
    • 2
  • N. Awano
    • 1
  • N. Kasai
    • 2
  • M. Higuchi
    • 3
  • K. Chinone
    • 4
  • M. Nakanishi
    • 2
  • K. Ohwada
    • 1
  • S. Kariyone
    • 1
  1. 1.Fukushima Medical CollegeFukushimaJapan
  2. 2.Electrotechnical LaboratoryTsukubaJapan
  3. 3.Tsukuba UniversityTsukubaJapan
  4. 4.Seiko I Co.TokyoJapan

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