Biomag 96: Volume 1/Volume 2 Proceedings of the Tenth International Conference on Biomagnetism

1218 Pages·2000·54.39 MB·English

by  H. Koch (auth.), Cheryl J. Aine, Gerhard Stroink, Charles C. Wood, Yoshio Okada, Stephen J. Swithenby (eds.)

Biomag 96
Volume I
Biomag 96
Volume II
Springer Science+Business Media, LLC
Cheryl J. Aine Yoshio Okada
Gerhard Stroink Stephen J. Swithenby
Charles C. Wood
Editors
Biomag 96
Proceedings of the Tenth International
Conference on Biomagnetism
Volume I
'Springer
Cheryl J. Aine Y oshio Okada
Gerhard Stroink Stephen J. Swithenby
Charles C. Wood
Editors
Biomag 96
Proceedings of the Tenth International
Conference on Biomagnetism
Volume II
'Springer
Cheryl J. Aine Y oshio Okada
Radiology Service Albuquerque Department of New Mexico School
V A Medical Center of Medicine
Building 49, 114M Albuquerque, NM 87131
1501 San Pedro SE USA
A1buquerque, NM 87108
USA
Gerhard Stroink Stephen J. Swithenby
Department of Physics Department of Physics and Astronomy
Dalhousie University The Open University
Halifax, Nova Scotia, Canada Milton Keynes MK7 6AA, UK
B3H 3J5
Charles C. W ood
Biophysics Group (P-21), MS D454
Los Alamos National Laboratory
P.O. Box 1663
Los Alamos, NM 87545
USA
Library of Congress Cataloging-in-Publication Data
International conference on Biomagnetism (1 Oth : 1999 : Sante Fe,
N.M.)
Biomag 96 : proceedings of the Tenth International Conference on
Biomagnetism 1 editors, Cheryl J. Aine ... [et al.).
p. cm.
Includes bibliographical references and index.
ISBN 978-1-4612-7066-9 (hardcover: alk. paper)
1. Biomagnetism Congresses. 1. Aine, Cheryl J. II. Ti tie.
QP345.I56 1999
571.4'7-dc21 99-42829
Printed on acid-free paper.
© 2000 Springer Science+Business Media New York
Originally published by Springer-Verlag New York, Inc. in 2000
Softcover reprint of the hardcover 1s t edition 2000
Ali rights reserved. This work may not be translated or copied in whole or in part without the
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except for brief excerpts in connection with reviews or scholarly analysis. Use
in connection with any form of information storage and retrieval, electronic adaptation, computer
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The use of general descriptive names, trade names, trademarks, etc., in this publication, even if the
former are not especially identified, is not to be taken as a sign that such names, as understood by
the Trade Marks and Merchandise Marks Act, may accordingly be used freely by anyone.
Production managed by Jenny Wolkowicki; manufacturing supervised by Joseph Quatela.
Camera-ready copy provided by the editors.
9 8 7 6 5 4 3 2 l SPIN 10742866
ISBN 978-1-4612-7066-9 ISBN 978-1-4612-1260-7 (eBook)
DOI 10.1007/978-1-4612-1260-7
Contents
Volume I
I Biomagnetic Instrumentation
1. Biomagnetic Instrumentation 3
Koch, H.
2. Reference Noise Cancellation: Optimizations and Caveats 7
Barnes, G.R., and Ioannides, A.A.
3. Positioning of MCG Measurement Equipment 11
Borchardt, M., Krause, E., and Lindner, G.
4. A Low-Noise, Integrated DC SQUID Magnetometer for
Applications in Biomagnetism 15
Cantor, R., Vinetskiy, V. and Matlashov, A.
5. Magnetocardiograms Recorded by First-Order Gradiometers
using HTS rf SQUIDs 20
Copetti, C.A., Soltner, H., Zhang, Y., Schuett, H., Rongen, H.,
Brandenburg, G., Clemens, U., Zimmermann, E., Borgmann, J.,
Tavrin, Y., Otto, R., Bousack, H., and Halling, H.
6. A Realtime, High-Bandwidth, Programmable Digital
Signal-Processing System for Monitoring Acquisition, Filtering,
and Archival Storage of Biomagnetic Signals 24
Corby, N.R., Hogle, R.A., Miller, P.D., and Pasquarelli, A.
7. Magnetic Measurement Techniques for Locating
Foreign Bodies in Humans 28
Costa Monteiro, E., Kelber, C., Andrade Lima, E.,
Costa Ribeiro, P., Bruno, A.C., Hall Barbosa, C.,
Parente Ribeiro, E., and Boechat, P.
8. Optimisation of Co-Registration Procedures for
Biomagnetic Measurements using a Thermoplastic Mask 32
Dammers, J., Barnes, G.R., Weise, F., Gross, J., Clewett, B.S.,
Ioannides, A.A., Miiller-Gartner, H.-W.
v
vi Contents
9. Design of a Magnetically Shielded Room for Development
of HTS SQUID Systems for Magnetocardiography 35
Davidson, C.R., Griffin, R.H., Best, K.J., Maltin, L., Wolf, W.,
Zhang, Y., Bousack, H. and Soltner, H.
10. A Digital-Signal-Processor (DSP) Flux-Locked-Loop (FLL)
for LTC SQUIDs with Automatic Reset and Feedback
Cancellation 39
Flynn, E.R., Bracht, R., Kraus, R.H., Jr., Maas, P.M.,
Ruminer, P. and Stettler, M.
11. A 32-Channel MCG System cooled by a GM/JT Cryocooler 43
Fujimoto, S., Sata, K., Fukui, N., Haraguchi, E., Kido, T.,
Nishiguchi, K. and Kang, Y.M.
12. A Cryocooled SQUID System with Minimal Clearance
between the Pick-up Coil and the Specimen 47
Fukui, N., Sata, K., Fujimoto, S., Kang, Y.M.
13. A Comparison of Vector and Radial Magnetometer Arrays
for Whole-Head Magnetoencephalography 51
Hughett, P. and Miyauchi, S.
14. 32 Channel High Tc SQUID System for Biomagnetism 55
Itozaki, H., Kugai, H., Nagaishi, T., Toyoda, H., Hirano, T.,
Haruta, Y., Tanaka, S. and Kado, H.
15. Source Delectability for Multichannel Biomagnetic Sensors 59
Johnson, R.T., Black, W.C. and Buchanan, D.S.
16. A Digital Flux-Locked Loop for High Temperature SQUID
Magnetometer and Gradiometer Systems with Field
Cancellation 63
Kraus, R.H., Jr., Bracht, R., Flynn, E.R., Jia, Q., Maas, P.M.,
Reagor, D. and Stettler, M.
17. Characterisation of a Planar Second-Order Gradiometer
in a Lightly Shielded Environment 67
Lang, G., Hutson, D., Weston, R.G., Klein, U., Shahani, U.,
Weir, A.l., Maas, P.M., Pegrum C.M. and Donaldson, G.B.
18. Magnetic Field Error of a Current Dipole in a
Superconducting Shield 71
Matsuba, H.
19. High Tc Superconducting Shielded Biomagnetometer System 75
Matsuba, H., Shintomi, K., Yahara, A., Imai, K., Irisawa, D.
and Masuda, M.
Contents vii
20. Current Dipole Localization Errors as a Function of the
System Noise and the Number of Sensors 79
Matsuba, H., Vrba, J. and Cheung, T.
21. Auditory Brainstem evoked Fields measured in a High
Tc Superconducting Shield 83
Nogai, T., Yahara, A., Matsuba, H. and Kuriki, S.
22. High Performance Magnetically Shielded Room
for Clinical Measurements 87
Paavola, M.A.J., Ilmoniemi, R.J., Sohlstrom, L., Meinander, T.,
Penttinen, A. and Katila, T.E.
23. An AC Susceptometer with a large Magnetised Volume
for Biological Samples 91
Pasquarelli, A., Del Gratta, C., Della Penna, S., Di Luzio, S.,
Pizzella, V. and Romani, G.L.
24. A Six-Channel SQUID Biomagnetometer optimised for Fetal
magnetocardiography 95
Rassi, D., Zhuravlev, Y.E., Josephs, 0. and Swithenby, S.J.
25. High Temperature Superconducting Quantum Interference
Devices in a Superconductor-Normal-Superconductor
Geometry 99
Reagor, D., Jia, Q.X., Mombourquette, C., Foltyn, S.,
Houlton, R. and Wu, X.D.
26. A Digital SQUID Controller for Unshielded
Biomagnetic Measurements 103
Robinson, S.E.
27. Investigation of the thin Film SQUIDs using Double Layer
Model of the Secondary Sources 107
Romanovych, S.S.
28. DC-MEG Studies: Development of Techniques for resolving
DC Fields 110
Saligram, U., Moran, J.E. and Tepley, N.
29. Development of a 61-Channel MEG System cooled by a
GM/JT Cryocooler 114
Sata, K., Fujimoto, S., Fukui, N., Haraguchi, E., Kido, T.,
Nishiguchi, N. and Kang, Y.M.
30. Low-Noise, Single Layer YBaCu 0 .a DC SQUID
2 3 7
Magnetometers for Shielded and Unshielded Operation 118
Schmidt, J.M., Lee, L.P., Matlashov, A., Teepe, M.,
Vinetskiy, V., Cantor, R. and Dilorio, M.S.