DocumentCode
1122192
Title
Biomagnetic susceptometer with SQUID instrumentation
Author
Paulson, D.N. ; Fagaly, R.L. ; Toussaint, R.M. ; Fischer, R.
Author_Institution
Biomagnetic Technol. Inc., San Diego, CA, USA
Volume
27
Issue
2
fYear
1991
fDate
3/1/1991 12:00:00 AM
Firstpage
3249
Lastpage
3252
Abstract
A novel SQUID magnetometer for noninvasive measurements of hepatic (liver) iron stores is discussed. Placement of the SQUID, detection coil, and magnet in the dewar vacuum region significantly reduced system noise. In addition, the system incorporates multiple magnets and detection coils which may allow the discrimination of the surface skin layer from the deeper (weaker signal) true liver iron concentration. Measurements indicate an instrumental noise level that is <20 μg/g of equivalent iron concentration
Keywords
SQUIDs; biomagnetism; iron; liver; magnetic susceptibility; magnetometers; patient diagnosis; SQUID instrumentation; SQUID magnetometer; biomagnetic susceptometer; detection coils; dewar vacuum; hepatic Fe stores; instrumental noise level; liver Fe stores; multiple magnets; noninvasive measurements; system noise; Biomagnetics; Coils; Instruments; Iron; Liver; Noise reduction; Noninvasive treatment; SQUID magnetometers; Skin; Vacuum systems;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.133904
Filename
133904
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