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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
Short-duration (i.e. sub-10s) B1+RMS exposure does not need to be considered for RF heating safety assessment, given our finding of no significant increase in the final in-vivo temperature or cumulative thermal dose.
Figure 1: Temperature vs. time for long-duration (i.e. 10s averaged) vs. short-duration B1+RMS exposure
Figure 2: Thermal dose vs. time for long-duration (i.e. 10s averaged) vs. short-duration B1+RMS exposure