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Abstract #2300

Assessing the In-Vivo RF Heating Effects of Short-Duration B1+RMS in MRI Sequences

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

Exposure to the RF energy of an MRI shall be limited to prevent potential harm to biological tissues. Whole-body SAR, averaged over any 6-minute interval, shall be limited to 2W/kg and 4W/kg under the limits of Normal and First Level Controlled Operating Mode, respectively, and is further restricted to twice the operating mode limit over any 10-second period. Our study investigates whether similar short-duration assessments are necessary for the alternative RF exposure metric of B1+RMS, in the context of RF heating safety of cardiac protocols with leaded cardiac implants.

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