START HERE – Eligibility identification
Use the identification checklist to identify the patient's scan
eligibility first
Use the yes/no identification checklist that starts on page 8 in this section to
determine the patient's MRI scan-type eligibility and the appropriate scan
MR
conditions to use for the patient's implanted Medtronic neurostimulation system
for chronic pain.
The MRI scan-type eligibility depends on a combination of factors pertaining to the patient's
implanted neurostimulation system.
Warnings
Other implanted systems – Prior to an MRI examination, determine whether the patient
has multiple active medical device implants (such as deep-brain stimulation systems,
implantable cardiac defibrillators, and others). The most restrictive MRI exposure
requirements must be used if the patient has multiple active medical device implants.
Contact the appropriate device manufacturers if you have questions. If you are unclear what
implants may be present, perform an x-ray to determine implant type and location. Do not
conduct an MRI examination if any conditions or implants that would prohibit or
contraindicate an MRI are present.
Trial systems (neurostimulation systems that are not fully implanted) – Physicians
should not prescribe MRI for patients undergoing trial stimulation or who have any
neurostimulation system components that are not fully implanted. Explant all trial
stimulation components if an MRI scan is required. MRI has not been tested on trial
stimulation components and may cause heating of the lead electrodes, resulting in tissue
damage or serious patient injury.
Precautions
MR
External devices are MR Unsafe in the scanner (magnet) room – Do not allow
the following Medtronic external control devices into the MRI scanner (magnet) room. These
devices contain ferromagnetic material, which can be affected by the MRI magnet. These
devices are MR unsafe:
▪
Patient control device
▪
Recharger
▪
External neurostimulator
▪
Clinician programmer
Identification checklist
1. Did you receive a sheet denoting the MRI conditionally safe (MRI-CS) scan-type
eligibility for the patient's MRI appointment?
8 English MRI guidelines for Medtronic neurostimulation systems for chronic pain