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European Heart Journal 1992 13(5):616-622;
Copyright © 1992 by the European Society of Cardiology.
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© 1992 The European Society of Cardiology

Magnetocardiographic non-invasive localization of accessory pathways in the Wolff-Parkinson-White syndrome by a multichannel system

P. WEISMÜLLER, K. ABRAHAM-FUCHS*, S. SCHNEIDER*, P. RICHTER, M. KOCHS and V. HOMBACH

Department of Cardiology, Angiology and Pneumology, University of Ulm Robert-Koch-Straße 8, 7900 Ulm
*Siemens Medical Engineering Group, Bereich Medizinische Technik GG 31, Henkestr. 127, 8520 Erlangen, Germany

Received 15 March 1991; revised 12 July 1991; .

Correspondence: Dr Peter Weismuller, Department of Cardiology, Angiology and Pneumology, University of Ulm, Robert-Koch-Straße 8, 7900 Ulm, Germany.

Abstract

Electrical activity can be localized by magnetocardiography (MCG) non-invasively. In this study a 37-SQUID (Super Conducting Quantum Interference Device) sensor multi-channel system (KRENIKON) was used to assess the potential of magnetocardiography to localize accessory pathways with a multichannel system. Seven WPW patients were studied by means of magnetocardiography. Prior to the MCG recordings, the site of the accessory pathway had been determined in all patients by invasive catheter mapping. MR images of the heart were used for anatomical correlation.

The magnetocardiographic localization of the accessory pathway corresponded with catheter mapping within 2.1 cm on average (total range: 0 – 5 cm). This is thus, a promising new method for non-invasive localization of accessory pathways in WPW patients.

Key Words: WPW syndrome • magnetocardiography • MCG • biomagnetic multichannel system • SQUID


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