Mr System Preparation; Supervision - Boston Scientific Spectra WaveWriter Mode D'emploi

MR System Preparation

Table 3 summarizes the MR Scanner-related Conditions of Use that must be met in order for an MR
Conditional head scan to be performed. For each condition or requirement, recommended actions to
determine conformance are listed.
Table 3. MR System Conditions
# Condition for Scanning
1. MRI systems that meet the following criteria:
• MRI magnet strength of 1.5T only, in a horizontal
closed bore system (no vertical-field, standing, or
extremity systems).
• Gradient systems with a maximum gradient slew rate
per axis less than or equal to 200 T/m/s.
• Maximum static field spatial gradient less than or
equal to 40 T/m (4000 gauss/cm).
2. 1.5T Transmit/receive RF quadrature head coil only, and
Hydrogen/proton imaging only
3. No other local or whole body transmit or transmit/receive
coils may be used.
4. Scanner must be at or below Normal Operating Mode
limits for RF and gradient exposure:
Head SAR < 3.2W/kg (Note: Whole Body averaged SAR
is not applicable for Head Transmit/Receive scanning.)
5. Patient must be positioned for head scanning and must
be in supine position during the scan, with head at
isocenter within the Head Transmit/Receive coil.

Supervision

Note: The patient should be in a psychological condition and mental state in which the patient is able to
provide immediate feedback of any problems during the examination.
Maintain visual and audio monitoring of the patient throughout the MRI examination. Verify that the
patient is feeling normal and is responsive during and between each individual scan sequence of the
MRI examination. Discontinue the MRI immediately if the patient becomes unresponsive to questions or
experiences excessive heating, pain, or shocking sensations/uncomfortable stimulation.
ImageReady MRI Guidelines for Spectra WaveWriter Spinal Cord Stimulator System
Actions
Check the technical specifications of the MRI
Scanner.
Check the technical specifications of the MRI
Head Coil.
Ensure that only the head transmit/receive coil is
used throughout the examination.
Ensure MRI Scanner is operated at or below
Normal Operating Mode.
Continuously monitor the patient to ensure the
patient is in the correct position during scan.
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MR System Preparation
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