Vector or scalar magnetometer arrays?

Author

Bradshaw, L.A. ; Wikswo, J.P., Jr.

Author_Institution

Dept. of Phys. & Astron., Vanderbilt Univ., Nashville, TN, USA

Volume

2

fYear

1999

fDate

36434

Abstract

We determined the information content in magnetometer arrays with different orientations and array densities from five potential current sources of biomagnetic fields. Using the inverse condition number of the modified lead field matrix (mLFM), we found that tangential or full vector component recordings provide more information about underlying sources of current in all but the simplest current distributions. This condition number method facilitates magnetometer designs that provide optimal accuracy of inverse solutions

Keywords

SQUID magnetometers; biomagnetism; inverse problems; vectors; array densities; biomagnetic fields; condition number method; full vector component recordings; information content; inverse condition number; inverse solutions; magnetometer designs; modified lead field matrix; optimal accuracy; orientations; potential current sources; scalar magnetometer arrays; tangential vector component recordings; vector magnetometer arrays; Astronomy; Biomagnetics; Design methodology; Detectors; Magnetic fields; Magnetic recording; Physics; SQUID magnetometers; Sensor arrays; Superconducting devices;

fLanguage

English

Publisher

ieee

Conference_Titel

[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint

Conference_Location

Atlanta, GA

ISSN

1094-687X

Print_ISBN

0-7803-5674-8

Type

conf

DOI

10.1109/IEMBS.1999.804043

Filename

804043