Clinical Magnetocardiography

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Abstract
The development of sophisticated data analysis techniques, coupled with dramatic improvements in MCG instrumentation, have made it possible to use the magnetocar-diogram for quantitative, clinical assessment of cardiac electrical function. There are currently four areas where magnetocardiography might prove clinically useful: to complement ECG diagnosis, to screen large numbers of people for cardiac electrical abnormalities, to measure non-invasively the electrical activity of the Bundle of His, and to detect infarct-related injury currents. The success of these applications will depend in part upon obtaining a detailed understanding of the production and detection of the cardiac magnetic field and the relation between the ECG and MCG. Research groups in Finland, France, and the United States are using visual examination of simple MCG signals and complex surface maps, statistical analysis of the morphology of normal and abnormal MCG data, and various equivalent generators to determine how the ECG and MCG are related and to identify those areas where magnetocardiography has the most promise as a clinical technique.

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