Year: 1974
Type: article
Abstract: In magnetocardiography (MCG) the magnetic field, produced by the electrical activity of the heart, is measured. This paper presents the preliminary results of the human fetal magneto-cardiography (FMCG). The MCG of an adult heart was first recorded by BAULE and McFEE [1]. Recently, several research groups have utilized the superconducting quantum interference device (Squiü) in re-cording the MCG of the human heart [2, 4, 5]. Some of the MCG complexes are of high quality. The configuration of the complexes resembles the ECG but gives additional Information about the electrical activity of the heart in various diseases [4]. l Method A gradiometer type SQUID magnetometer for studying MCGs in an unshielded environment was constructed [4]. The Instrument was planned to reach the sensitivity of 10 ngauss with a.100 Hz bandwidth. With this Instrumentation good quality MCGs of adult hearts have been obtained. The measurements of the FMCG were carried out in a wooden cottage in a suburban area about 70 m away from the nearest apartment block. In this way the construction of the ex-pensive magnetically shielded room has been avoided. The mothers were in the supine position during the measurements. The detector, meas-uring the vertical component of the magnetic field, was placed just above the maternal abdomen. For clarity, the simultaneous ECG of the mother was also recorded. Both Signals were recorded on the magnetic tape and reproduced in the labo-ratory. 2
Source: Journal of Perinatal Medicine
Authors: V Kariniemi, J Ahopelto, P J Karp, T E Katila
Language: English
Topic: ECG Monitoring and Analysis
Subfield: Cardiology and Cardiovascular Medicine
Field: Medicine
Domain: Health Sciences
Open Access status: green
OpenAlex ID: W1477018016