Mri Basic Concepts - Boston Scientific ImageReady Mode D'emploi

MRI Basic Concepts

MRI Basic Concepts
MRI is a diagnostic tool that uses three types of magnetic and electromagnetic fields to image soft tissue in
the body:
• A static magnetic field generated by a superconducting electromagnet coil, typically 1.5 Tesla (T)
in strength.
• Gradient magnetic fields of much lower intensity, but with high rates of change over time. Three
sets of gradient coils are used to create the gradient fields.
• A pulsed radio frequency (RF) field produced by transmission RF coils (approximately 64 MHz for
1.5 T Hydrogen/proton).
These fields may create physical forces or electrical currents that can affect the functioning of active
implantable medical devices (AIMDs) such as implantable pulse generators and Leads. Therefore, only
patients implanted with specific configurations of the Spectra WaveWriter SCS System are eligible for MRI
head scans. Spectra WaveWriter SCS System patients can undergo MRI head scans only by complying
with all of the MRI Conditions of Use outlined in this manual.
ImageReady MRI Guidelines for Spectra WaveWriter Spinal Cord Stimulator System
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