CAUTION
Heating up of RF blankets or shields used to avoid aliasing
artifacts!
Patient burns
◆ Never use RF blankets or other conductive sheets within the
magnet bore.
Contraindications
This chapter contains very important information about MR
safety: In principle, a qualified physician must evaluate the risk/
benefit ratio of the MR examination for every patient.
To date, there is no scientific proof that MR examinations are
harmless for pregnant women, the unborn (embryos or fetuses)
and children under two years of age.
In general, an MR examination is contraindicated for patients with
electronic or electronically conductive implants or metals, especially
those containing ferromagnetic foreign matter.
Typical contraindications for MR examinations are:
◾ Electronic implants: e.g. pacemakers, stimulators, insulin pumps
◾ Artificial heart valves, aneurysm clips
◾ Metal splinters in the eye (danger of retinal detachment)
◾ Artificial anus (anus praeter) with magnetic closure
◾ Transdermal drug patches with metallic backings
◾ Electrically conductive implants and prostheses
◾ Metallic spirals for contraception (IUDs = Intrauterine Devices)
◾ Transdermal or other similar implants (for example, body piercings
as well as magnetic piercings)
2.2.4
2 Safety
24
MR System | Operator Manual
Print No. MR-01501G.621.02.02.02
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