Mr System Preparation - Boston Scientific ImageReady MRI 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 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 spatial field gradient less than or equal to 40 T/m
(4000 gauss/cm).
2. • Transmit coil: 1.5T Full Body transmit/receive or Head
transmit/receive, RF quadrature only.
• Receive-only coil: Any type.
• Hydrogen/proton imaging only.
3. Scan sequence throughout the scan must have
B1+rms less than or equal to (≤) 2.0 µT
If B1+rms is not available then scan sequence must have
Whole body and head SAR less than or equal to (≤) 0.1 W/kg
Note: Using the SAR value may result in a more restrictive
MRI scan.
4. Patient must be positioned in supine or prone position during
the scan.
5. Cumulative active scan time (with RF On) should be limited to
30 minutes or less per imaging session. If 30 mins of active
scan time is reached allow 60 mins of non-active time before
proceeding.
ImageReady™ MRI Guidelines for Boston Scientific Deep Brain Stimulation Systems
MR Conditional System Description
Actions
Check the technical specifications of the
MRI Scanner.
Check the technical specifications of the
MRI Head Coil and/or Body Coil.
Ensure MRI Scanner is operated at or
below B1+rms of 2.0 µT throughout
the scan.
If B1 + rms is not available then ensure
MRI scanner is operated at or below
Whole body and head SAR of 0.1 W/kg
Continuously monitor the patient to
ensure the patient is in the correct
position during scan.
Check the active scan time on the MRI
scanner.
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