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Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
book

Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition

by John G. Webster, Halit Eren
February 2014
Intermediate to advanced content levelIntermediate to advanced
1921 pages
82h 13m
English
CRC Press
Content preview from Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
14-11SQUID Magnetometers
Magnetic elds from active electrical sources in the body can be measured passively and externally to
the body (i.e., noninvasively) by placing the magnetometer (actually rst- or second-order gradiometers)
in cl
ose
pr
oximity
to th
e
bo
dy’s
su
rface
. As me
ntioned,
th
e
us
e
of gr
adiometers
ca
n
al
low
me
asurements
to be ma
de
in un
shielded
en
vironments
at se
nsitivities
be
low
5 fT
/√Hz
. i
s
te
chnique
is ap
plicable
to
me
asurement
o
f
t
he
h
eart,
b
rain,
a
nd
s
keletal
m
uscles
.
14.5.1 Magnetoencephalography
e magnetic analog to electroencephalography (EEG), MEG, has the advantage of being (in the case of
depth electrodes) noninvasive ...
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Publisher Resources

ISBN: 9781439848913