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Proceedings Paper

Extrapolation Of Two Vector Components Of A Biomagnetic Field From Measurements Of The Third Component
Author(s): H. A. Schlitt; K. Rehm; W. J. Dallas; W. H. Kullmann
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Paper Abstract

Techniques exist for reconstructing current density vectors from measurements of the three components of the generated magnetic field. In order to have a practical data collection scheme, the number of measurements must be as small as possible. In addition, some technical difficulties exist in using SQUID detectors to measure all three components of a magnetic field simultaneously. This paper presents a method for extrapolating the missing x- and y-components of a biomagnetic vector field from the measured z-component, under certain readily met boundary conditions. Specifically, we address the solution of such a problem when the measured data consists of the z-component in a single plane. The boundary conditions that must be met in order to perform the extrapolation require that the z-component values fall off to zero on the edges of the measurement plane, and that the extrapolation be performed in a region free of current sources.

Paper Details

Date Published: 1 May 1989
PDF: 12 pages
Proc. SPIE 1090, Medical Imaging III: Image Formation, (1 May 1989); doi: 10.1117/12.953185
Show Author Affiliations
H. A. Schlitt, University of Arizona (United States)
K. Rehm, University of Arizona (United States)
W. J. Dallas, University of Arizona (United States)
W. H. Kullmann, Philips GmbH Forschungslaboratorium Hamburg (West Germany)


Published in SPIE Proceedings Vol. 1090:
Medical Imaging III: Image Formation
Samuel J. Dwyer; R. Gilbert Jost; Roger H. Schneider, Editor(s)

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