Head-Only Eligible - Preparing The Patient Before The Mri Scan - Medtronic 97702 Instrucciones De Uso

Table 6. Head-only eligible – MRI equipment and scan requirements (continued)
Radio-frequency (RF)
frequency
RF power
Gradients
Active scan time limits
Landmark (isocenter
location)
Head-only eligible – Preparing the patient before the MRI scan
Table 7. Head-only eligible – Preparing the patient before the MRI scan
Confirm that stimulation is
turned off
Core body temperature
Patient weight, minimum
Sedation
Inform the patient of risks
Approximately 64 MHz.
w
Warning: Do not conduct MRI scans with nonproton
scanning frequencies (such as, 13C, 23Na, or 31P).
Frequencies other than 64 MHz have not been tested and
could cause device damage and excessive heating, which
can result in tissue damage or serious patient injury.
Limit the head SAR to 1.5 W/kg (0.68 W/lb) or less for all RF
pulse sequences.
Limit the gradient dB/dt field to 20 Tesla per second or less.
#
Caution: Exposure to gradients exceeding a dB/dt limit of
20 Tesla per second may result in overstimulation or
shocking sensations.
No restrictions.
Head only. Do not place any part of the RF transmit/receive head
coil over any implanted neurostimulation system component.
Confirm that the checklist on page 18 (at the beginning of this
head-only eligible section) was followed.
#
Caution: Before conducting the MRI scan, confirm that the
patient's implanted neurostimulation system is off. Leaving
stimulation on during the scan could increase the potential
for uncomfortable, unintended stimulation.
If you are not certain if stimulation is off, ask the patient if it is
off.
Fever
No restrictions.
Blankets
No restrictions.
No restrictions.
If possible, do not sedate the patient so that the patient can
provide feedback of any problems during the examination.
Inform the patient of all the risks of undergoing an MRI
examination as stated in this head-only eligible section.
MRI guidelines for Medtronic neurostimulation systems for chronic pain English 21