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Abstract #4828

Evaluation of 3D Tailored Excitation Sequences on the MRI Safety Assessment of Transvenous Implantable Pacemaker, ICD or CRT System

Kevin Feng1, Ruoli Jiang1, and Shiloh Sison1
1Abbott Laboratories, Sylmar, CA, United States


A 3D tailored excitation sequence at 3T was found to have peak RF simultaneous with gradient slewing. The exposure levels generated by this sequence were determined and impact to the transvenous implantable pacemakers, implantable Cardioverter Defibrillators (ICDs) and Cardiac Resynchronization Therapy (CRT) systems safety evaluation of RF and gradient voltages was assessed. It is demonstrated that the combined RF and gradient level is expected to be covered by the separate RF and gradient test level required by ISO/CD 10974, and the bandwidth of the 3D sequence is well within the frequency ranged specified in ISO/CD 10974.

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