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Abstract #2667

Patient-Specific SAR Estimation for the 8-Channel Radiative Antenna Array at 7 T Prostate MRI

Ozlem Ipek1, M de Greef2, A Raaijmakers1, P.R. Luijten3, J. J.W. Lagendijk1, C.A.T. van den Berg1

1Radiotherapy, UMC Utrecht, Utrecht, Netherlands; 2Image Science Institute, UMC Utrecht, Utrecht, Netherlands; 3Radiology, UMC Utrecht, Utrecht, Netherlands

The patient-specific worst-case local SAR with 8 channel radiative antenna array is studied in 3 different patient models, by calculation of the largest eigenvalue of the Q-matrix for each voxel. The models that we used vary both in size and fat/muscle ratio. In this way,the probability of a generic model is investigated for worst-case local SAR estimation of an external surface array. A generic model is not found in 3 models due to huge variance in fat/muscle ratio.