Magnetic shielding can also be used to reduce the magnetic field disturbance from moving
metal objects which can improve the moving metal capability.
Room magnetic shielding generally consists of iron plates in the room walls, floor, and ceiling.
Special consideration should be given when selecting a magnet site location due to the expense
and effort required to provide magnetic shielding.
Designing a magnetic shield requires a comprehensive computer analysis which predicts the
effect the shield will have on the magnetic field as well as the effect of the shield on the
homogeneity of the magnet. The structural capacity of the site and space availability are
important factors in the design of the shield. The GE Healthcare MR Siting & Shielding Group
has the capability to design magnetic shields which meet a broad range of site requirements.
SIGNA Voyager Pre-Installation
Direction 5680008–1EN, Revision 2
Chapter 2 General System Level
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