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Abstract #2737

SAR and SNR Comparison for Infants Between Adult Head and Knee MRI Coils

Zhangwei Wang1, Owen Arthurs2, Desmond T.B. Yeo3, Gemma R. Cook2, Fraser J. Robb1

1Coils, GE Healthcare, Aurora, OH, United States; 2Radiology, University of Cambridge, Cambridge, United Kingdom; 3GE Global Research, Niskayuna, NY, United States

Pediatric body MR imaging is limited by a lack of dedicated coils. Children have several unique physiological and physical characteristics that may influence the thermal risk during RF exposure. However, most infants are typically imaged using adult head, knee or surface coils, but SNR and SAR results have not been formally investigated. In this work, we use numerical method to evaluate an infant body model by an adult head and knee coil. Our results suggest that estimated SAR distribution varies with different clinic landmark and coil geometry, and local SAR is relatively high when infants are imaged using adult coils.