Optimizing an array of sensors for magnetoencephalography

Author

Hochwald, Bertrand ; Nehorai, Arye

Author_Institution

Dept. of Electr. Eng., Yale Univ., New Haven, CT, USA

Volume

2

fYear

1995

fDate

20-23 Sep 1995

Firstpage

861

Abstract

Modern magnetoencephalographic (MEG) instruments estimate the location of endocranial current sources with an array of magnetometers. The authors provide a technique for computing the magnetometer orientations that achieve minimum mean-square localization error. They thereby show that the radial orientations in a commonly-used array are non-optimal, and suggest a simple modification that significantly improves the array´s performance

Keywords

SQUID magnetometers; arrays; biomedical equipment; least mean squares methods; magnetoencephalography; measurement errors; MEG; array performance improvement; endocranial current sources location estimation; magnetoencephalographic sensors array optimization; magnetometer orientations computation technique; medical diagnostic technique; medical instrumentation; radial orientations; Biosensors; Instruments; Inverse problems; Magnetic field measurement; Magnetic sensors; Magnetoencephalography; SQUID magnetometers; Sensor arrays; Superconducting devices; Superconducting magnets;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society, 1995., IEEE 17th Annual Conference

Conference_Location

Montreal, Que.

Print_ISBN

0-7803-2475-7

Type

conf

DOI

10.1109/IEMBS.1995.579240

Filename

579240