PMID: 3746153Jul 1, 1986Paper

Comparative study of the normal vector magnetocardiogram and vector electrocardiogram

Journal of Electrocardiology
J J NousiainenJ A Malmivuo

Abstract

The normal vector magnetocardiogram and its statistical variation are described in detail. The magnetic heart vector of 18 healthy subjects is detected with the corrected unipositional lead system and analysed together with the simultaneously recorded Frank vector electrocardiogram. The mean values and standard errors for the magnitudes and directions of the magnetic QRS and T waves are calculated with a digital computer. The interindividual variability of the normal magnetic and electric heart vectors was found to be about the same. The inaccuracy in the detector placement at the fourth intercostal space gives rise to only a small error in the direction of the detected magnetic heart vector. This is due to the self-centering effect of the lead fields in the heart's region, which arises from the difference in conductivity between the well-conducting heart and the intracardiac blood mass and the low-conducting lungs. The shape of the magnetic heart vector remains unchanged when it is measured at various distances from the chest surface on the line which is perpendicular to the frontal plane and joins with the beginning of the fourth intercostal space. The relationship between the normal magnetic and electrical heart vectors was ...Continue Reading

References

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Citations

Jan 21, 2000·Pacing and Clinical Electrophysiology : PACE·G StroinkM J Gardner
Jan 20, 2020·Annals of Noninvasive Electrocardiology : the Official Journal of the International Society for Holter and Noninvasive Electrocardiology, Inc·Naotsugu IwakamiKengo Kusano
Sep 21, 2018·Physiological Measurement·Emerson KeenanMarimuthu Palaniswami
Aug 1, 1992·Clinical Physics and Physiological Measurement : an Official Journal of the Hospital Physicists' Association, Deutsche Gesellschaft Für Medizinische Physik and the European Federation of Organisations for Medical Physics·Y Nakaya, H Mori

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