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Abstract #2915

Investigating Spiral Trajectories for Sub-second Conductivity Imaging in MREPT

Safa Özdemir1, Efe Ilicak1, Lothar R. Schad1, and Frank G. Zöllner1,2
1Computer Assisted Clinical Medicine, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany, 2Mannheim Institute for Intelligent Systems in Medicine, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany


Magnetic Resonance Electrical Properties Tomography (MREPT) technique is used to obtain conductivity (σ) and permittivity (ε), using phase of the B1+ information. While spin echo and bSSFP based pulse sequences were shown to successfully obtain phase images, they are either very slow or suffer from artifacts and require multi-acquisitions. To overcome these limitations, in this work we investigate the use of spiral trajectory-based sequences in MREPT. Our results indicate that even for sub-second acquisition times, conductivity maps can be successfully acquired via spiral trajectory-based sequence, and therefore can improve the utility of MREPT techniques by shortening the acquisition time drastically.

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