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Abstract #2293

Comparing RF Heating Based on SAR vs. B1+RMS MRI Conditional Labeling

Negin Behzadian1 and Shiloh Sison2
1Research and Development, Abbott, Sylmar, CA, United States, 2Research and Development, Abbott, Sunnyvale, CA, United States

MRI RF heating can cause thermal damage to biological tissues, especially in patients with leaded implantable devices, by concentrating power deposition at the implant-tissue interface. With the emergence of B1+RMS as a more precise RF exposure metric than SAR, implantable device manufacturers have begun MR conditional labeling to fixed B1+RMS levels, in addition to SAR labeling. Our study characterizes the relationship between RF heating per SAR vs. B1+RMS-based scaling methods in the context of 3T Normal Operating and First Level Controlled Mode MRI exposure.

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