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Abstract #4896

Numerical simulations of RF heating for infants within MR body coil

Xin Chen 1 , Charles Poole 2 , Michael Steckner 1 , and Robert Brown 2

1 MR, Toshiba Medical Research Institute USA, Inc., Mayfield Village, OH, United States, 2 Physics, Case Western Reserve University, Cleveland, OH, United States

MRI is useful for neonatal/pediatric imaging since no ionizing radiation is used. Nevertheless, MRI has unique safety concerns: RF power deposition and resultant tissue heating. Numerical simulations have been widely applied to investigate specific absorption rate (SAR) and tissue temperature rise. However, most work published on adults and only a few showed results for infants. Infants (especially neonates) thermoregulation is not as developed as adults, and may be further impaired under unique scan conditions (sedation, swaddling). Furthermore, there are no special considerations in regulatory limits for these patients. This work investigates SAR and temperature rise in infants due to RF heating.

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