Numerical simulations of RF heating for infants within MR body coil
Xin Chen 1 , Charles Poole 2 , Michael Steckner 1 , and Robert Brown 2
MR, Toshiba Medical Research Institute USA,
Inc., Mayfield Village, OH, United States,
Case Western Reserve University, Cleveland, OH, United
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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