Magnetocardiography (MCG) is a powerful technique to measure the electrophysiological processes of the human heart beat. Even the extremely weak magnetic signals of unborn babies can be detected in a real-time measurement above the mother's womb.
High Temperature SQUID for MCG
Our aim is to develop suitable SQUID instrumentation with liquid nitrogen cooling to be able to perform measurements of the magnetic field of the human heart above the chest in order to extract clinically relevant information from the intra- and extracellular ion currents.
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Since the magnetic signal of the adult human heart amounts to only about 100 pT (peak-to-peak) above the chest, a gradiometric sensor arrangement as well as suitable magnetic shielding SQUID is required for MCG recordings.
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Fetal magnetocardiography (fMCG) is a promising technique for prenatal diagnosis of congenital heart defects. Magnetocardiograms of unborn babies which give signals of only a few pT have been successfully recorded as early as the 31st week of gestation.
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