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- Always assume that the MR system's static magnetic
field is present, and treat the system accordingly.
- Don't allow equipment and devices containing
magnetic (especially ferromagnetic) components past the 5 G
line, unless they have been tested by the device manufacturer
and have been labeled "MR safe" for your specific
MR environment. Also, adhere to any restrictions provided by
suppliers regarding the use of MR safe and MR compatible equipment
and devices in your MR environment.
NOTE: "MR safe" is defined as safe
for individuals within the environment, but may cause interference
with diagnostic information. "MR compatible" is
defined as safe for individuals within the environment with no
significant effect on the quality of diagnostic information.
- Don't make assumptions about devices or equipment
(e.g., sandbags) being MR safe. Err on the side of caution: Unless
a device or piece of equipment has been proven to be MR safe,
do not bring it into the MR environment.
- Test equipment or devices with a powerful handheld magnet
to determine their potential to be attracted by the MR system
before allowing them into the MR environment. This is important
even for MR safe and MR compatible equipment. (i.e. Attaching
a plastic sign to an MRI compatible oxygen tank with a ferromagnetic
wire renders the device incompatible.)
- Bring non-ambulatory patients into the MR environment
using a non-magnetic wheelchair or wheeled stretcher. Ensure
that no oxygen bottles, sandbags, or any other magnetic objects
are concealed under blankets or stowed away on the transport
equipment.
- Ensure that IV poles accompanying the patient for the
MR procedure are not magnetic.
- Carefully screen all people entering the MR environment
for magnetic objects in their bodies (e.g., implants, bullets,
shrapnel), on their bodies (e.g., hair pins, brassieres, buttons,
zippers, jewelry), or attached to their bodies (e.g., body piercings).
Magnetic objects on or attached to patients', family members',
or staff members' bodies should be removed if feasible (dental
fillings are an example of a non-removable item) before such
individuals enter the MR scan room.
Patients with ferromagnetic materials in
their bodies may not be candidates for MR imaging, unless the
physician has reviewed the case and approved scanning.
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