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Abstract #4777

Minimum SAR for RF Shimming by Allowing Spatial Phase Variation

Yigitcan Eryaman1, Celal Alp Tunc1, Ergin Atalar1

1Electrical Engineering, Bilkent University, Ankara, Turkey

The ultimate value of SAR for MRI coils is calculated for a uniform target transmit profile. By keeping the magnitude of the field within given bounds, the target profile with the optimum phase distribution is calculated. The phase and magnitude of the resulting field distribution is presented. Reduction in whole body SAR in comparison to zero phase target sensitivity is calculated for different magnetic field strengths.