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Abstract #4893

The Feasibility of Predicting Temperature Increase through Local SAR Estimation via Electrical Properties Tomography: A Phantom Study at 7T

Xiaotong Zhang 1 , Jiaen Liu 1 , Pierre-Francois Van de Moortele 2 , Sebastian Schmitter 2 , and Bin He 1

1 Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN, United States, 2 Center for Magnetic Resonance Research, University of Minnesota, Minneapolis, MN, United States

It has been shown that Electrical Properties (EPs) of biological tissues can be derived from MR-based B1 measurement. A strong appeal for these Electrical Property Tomography (EPT) methods is to estimate real-time and subject-specific local SAR induced by RF pulsing. In order to investigate the feasibility of EPT-based SAR estimation in predicting possible local temperature change, following previously proposed EPT protocols, in this preliminary study, induced local SAR in a saline phantom has been estimated for a heating sequence at 7T, as compared to measured temperature changes using MRI Thermometry based on the proton chemical shift (PRF).

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