Changes in Magnetic Field Maps at QRS-Onset After Myocardial Infarction
Several magnetocardiographic studies have been performed which investigated changes in cardiac magnetic field distribution for a number of diseases involving structural and functional changes in the myocardium, such as in hypertrophy or myocardial infarction. In such studies, different approaches have been used to examine and quantify the characteristics of the fields maps [1,2]. However, the continuous change of the map features over time during depolarisation has not been investigated. Here we introduce parameters which permit the discrimination of the effects of recent myocardial infarction on changes in conduction after Q onset as reflected in changes of the magnetic field pattern over time. Goal was to acquire more information on the underlying disease by identifying changes in the magnedc field distribution caused by ischemia or structural heart disease.
KeywordsIschemia Coherence Cardiol
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- Lant, J., Stroink, G., Montague, T.J., Gardner, M.J., Mieszkowski, M. Discrimination between myocardial infarct groups through the use of iso-integral magnetic field maps, Am J Noninvas Cardiol, 1991, 5: 215–222.Google Scholar
- Seese, B., Moshage, W., Achenbach, S., Killmann, R., Bachmann, K. Magnetocardiographic (MCG) analysis of myocardial injury currents, In: Baumgartner, G., Deecke, L., Stroink, G., Williamson, S J. Biomagnetism: Fundamental Research and Clinical Applications, Amsterdam, Elsevier/IOS Press, 1995: 628–632.Google Scholar
- Stroink, G., MacAulay, C., Montague, T.J., Horacek, B.M. Normal and abnormal components in magnetocardiographic maps of a subject with myocardial infarction, Med Biol Eng Comp, 1985, 23: 61–62.Google Scholar
- Nousiainen, J., Oja, O.S., Malmivuo, J. Comparative analysis of the spatial sensitivities of VMVG an VECG, In: Hoke, M., Erno, S.N., Okada, Y.C., Romani, G.L. Biomagnetism: Clinical Aspects, Amsterdam, Excerpta Mediac, 1992: 497–501.Google Scholar