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Abstract #2231

SAR and patient orientation for 3 T 2-channel parallel transmit pelvis imaging

Mariya Lazebnik1

1GE Healthcare, Waukesha, WI, United States

This work investigates the impact of patient orientation on SAR for 3 Tesla two-channel parallel transmit (pTx) pelvis imaging. SAR simulations were performed on two human body models in a supine position in a 70 cm-diameter 3 T body coil in a pelvis landmark, in both “head first” and “feet first” patient entry orientations. Whole body SAR, peak spatial SAR, and SAR ratio (= peak SAR / whole body SAR) were computed for quadrature and pTx excitations. Patient position and orientation can cause peak SAR and SAR ratio to vary significantly and must be considered when evaluating pTx excitation.

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