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Abstract #2676

Influence of Skin Tissue and Air Cavities on Local SAR Estimation in Parallel MR Excitation

Ara Yeramian1, Stefanie Buchenau1, Chris A. Cocosco1, Matthias Gebhardt2, Dirk Diehl3, Jrgen Hennig1, Jan Korvink4, Maxim Zaitsev1

1Medical Physics, University Medical Center Freiburg, Freiburg, BW, Germany; 2Healthcare Sector, Siemens AG, Erlangen, Germany; 3Corporate Technology, Siemens AG, Erlangen, Germany; 4IMTEK, Freiburg, Germany

Whole-body Specific Absorption Rate (SAR) estimation and hot spot detection in parallel excitation is achieved through EM simulations of RF parallel excitation coils and virtual whole-body models. It has been proposed that whole-body models comprising fat, muscle, and lung tissues only (essential tissues) are sufficient for accurate SAR estimation. In addition to these essential tissues, due to their dielectric properties contrasts with their surroundings, we investigate the influence of skin tissue and air cavities in the head, pharynx, trachea, bronchi, and the intestines on local SAR in an 8-channenl pTx environment.