Siemens MAGNETOM Skyra Owner's Manual page 42

4
Magnetic fringe field and control area
This table shows the effects of the magnetic fringe field on devices located in the vicinity
of the magnet and the safety distances required. Observe the minimum distances to be
maintained from the center of the x, y, and z axes of the magnet.
Magnetic flux
density
3 mT
1 mT
0.5 mT
0.2 mT
0.1 mT
0.05 mT
Siemens AG Healthcare Sector
Minimum distances
(x = y = radial, z = axial)
x = 2.1 m
z = 3.2 m
x = 2.3 m
z = 4.0 m
x = 2.60 m
z = 4.60 m
x = 3.1 m
z = 5.7 m
x = 3.9 m
z = 6.8 m
x = 4.9 m
z = 8.2 m
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Examples: Devices affected
Small motors, watches, cameras, credit
cards, magnetic media
Oscilloscopes, computers, disk drives,
shielded color monitors
B/W monitors, magnetic media, cardiac
pacemakers, insulin pumps
Siemens CT systems
Siemens linear accelerators
X-ray I.I., gamma cameras, third party
linear accelerators
MR compatibility data sheet