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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