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Abstract #3878

SAR Evaluation of Whole-Body Pregnant Woman Models at Different Gestational Stage and Position in MRI Birdcage Coil

Zhangwei Wang1, Desmond Yeo2, George Xu3, Jason Jin1, Fraser J. Robb1

1GE Heathcare Coils, Aurora, OH, United States; 2GE Global Research, Niskayuna, NY, United States; 3Rensselaer Polytechnic Institute, Troy, NY, United States

A set of high-resolution whole body pregnant woman models at three gestational stages(3, 6 and 9 months) was adopted to investigate the SAR distribution at different position and field strength. The highest SAR is occurred in the mother's peripheral tissues in all pregnancy phase. And the maximum local SAR of the fetus is over IEC limitation in some cases. The results show that the local maximum SAR1g and SAR10g can be better indications as limitation factor other than the whole body average SAR