ORBIT FR Shielding for MRI rooms - Manual (Page 2)

Basic
Magneti
generate
Most M
shielding
RF shield
created
requirem
signal at
The purp
could int
upon the
gauss fie
unknow
MRI man
requirem
The shie
MRI shie
There ar
non‐aco
An RF vi
observe
two laye
There ar
wavegui
MRI Intr
ic Resonance
e an image o
RI systems re
g; however,
ding protects
by the MRI.
ments neede
ttenuation at
pose of mag
terfere with
e magnet us
eld within a c
wingly walk th
nufacturers
ments may v
elding can be
elding are co
re many type
oustic, autom
ew window,
the patient,
ers of safety
re many othe
ides, air vent
roductio
e Imaging (M
of the patien
equire radio
this is determ
s (attenuate
The type of
ed. A typical
t 100 MHz
netic shieldi
other electr
sed in the MR
controlled ar
hrough the fi
often requir
vary for any g
e made of vir
opper, galvan
es of RF door
matic, and ma
which is nee
, is normally
glass.
er types of p
ts, interface
n
:
MRI) is a diag
t.
frequency (
mined on a p
s) from exte
MRI System
MRI perform
ng is to cont
ronic equipm
RI system. Ty
rea and to ke
ield. This cou
e 100 dB of R
given manufa
rtually any ty
nized steel, a
r systems av
anual.
eded for the
manufacture
penetrations
panels, filter
nostic imagi
RF) shielding
project‐by‐p
rnal electrom
used, dictat
mance requir
tain the mag
ment. The lay
ypically the d
eep this prot
uld be a wait
RF attenuati
acturer and f
ype of metal;
and aluminiu
vailable, singl
e technician s
ed with a do
into and out
rs and quenc
ng tool that
g and some c
roject basis.
magnetic and
tes the exact
red of the sh
netic field ge
yout and type
design for ea
tected area a
ting room be
on at the sys
for higher‐fr
; however, th
m.
le, double, sl
sitting at the
ouble layer o
t of the shiel
ch pipes, all o
uses electro
can also requ
d RF that ma
field and sh
ielding syste
enerated by
e of magneti
ch MRI site i
away from an
ehind or next
stem sense f
equency tes
he most com
liding, doubl
control con
f mesh sandw
ded MRI cha
of which we
omagnetic fie
uire magneti
ay distort ima
hielding
em is 100 dB
the MRI, wh
ic shielding d
is to contain
ny person w
t to an MRI r
frequency, b
sting specific
mmon types
e sliding, aco
sole to mon
wiched betw
ambers, such
can supply.
elds to
c
ages
of RF
hich
depends
the 5‐
ho may
room
ut these
ations.
used for
oustic,
itor and
ween
h as