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Abstract #3487

RF Shimming Improves Phase-Based Conductivity Imaging

Ulrich Katscher1, Astrid L.H.M.W. van Lier2, Cornelis A.T. van den Berg2, Jochen Keupp1

1Philips Research Europe-Hamburg, Hamburg, Germany; 2University Medical Center Utrecht, Utrecht, Netherlands

In the framework of Electric Properties Tomography (EPT), approximate conductivity imaging is possible by analyzing the B1 phase, assuming constant B1 amplitude. The more this assumption is violated, the less accurate the reconstructed conductivity. This study analyzes the influence of modifying the B1 amplitude by parallel RF transmission on the precision of phase-based EPT. It turns out that phase-based EPT benefits significantly from optimizing B1 amplitude homogeneity via with RF shimming.