Full-Body Eligible - Pre-Mri Scan Operations And Considerations; Image Artifacts And Distortion - Medtronic 97702 Instrucciones De Uso

Table 2. Full-body eligible – Preparing the patient before the MRI scan (continued)
Patient position within the
bore
Inform the patient of risks
Patient communication with
operator during scan
Full-body eligible – Pre-MRI scan operations and considerations
Table 3. Full-body eligible – Pre-MRI scan operations and considerations
Enter patient weight
Verify all parameters

Image artifacts and distortion

SureScan leads have demonstrated minimal image distortion for areas surrounding the
implanted leads when the device is out of the field of view. Significant image distortion can
result from the presence of the device within the field of view. Image artifacts and distortion
resulting from the presence of the device and the leads within the field of view must be
considered when selecting the field of view and imaging parameters. These factors must
also be considered when interpreting the MRI images.
Careful choice of pulse sequence parameters, location of the angle, and location of the
imaging plane may minimize MR image artifacts. However, the reduction in image distortion
obtained by adjustment of pulse sequence parameters will usually compromise signal-to-
noise ratio.
The following general principles should be followed:
Position the patient in a prone or supine position in the MRI
bore.
w
Warning: Do not position the patient in other positions, eg,
on his or her side (called the lateral decubitus position)
within the MRI bore. Scanning patients in positions other
than prone or supine is untested and could cause excessive
tissue heating during an MRI scan.
Inform the patient of all the risks of undergoing an MRI
examination as stated in this full-body eligible section.
Instruct the patient to immediately inform the MRI operator if any
discomfort, unexpected stimulation, shocking, or heating occurs
during the examination.
Enter the correct patient weight into the MRI console to ensure
that the SAR is estimated correctly.
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Warning: Ensure the patient weight is entered correctly to
avoid the risk that the MRI scan is performed at an RF
power level too high for the patient. An inappropriately high
RF power level may cause excessive heating, which can
result in tissue damage or serious patient injury.
Verify that all proposed MRI examination parameters comply
with the MRI exposure requirements in this full-body eligible
section. If not, the parameters must be modified to meet these
requirements. If the parameters cannot be modified, do not
perform an MRI.
MRI guidelines for Medtronic neurostimulation systems for chronic pain English 15