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Abstract #2194

High Resolution Simulation and Measurement of Phase-Specific B0 Field Conditions Across the Human Cardiac Cycle

Yun Shang1, Martin Gajdosik1, Sebastian Theilenberg1, Laura M. Schreiber2,3, and Christoph Juchem1,4
1Department of Biomedical Engineering, Columbia University, New York, NY, United States, 2Chair of Cellular and Molecular Imaging, Comprehensive Heart Failure Center, University Hospital Wuerzburg, Wuerzburg, Germany, 3Department of Cardiovascular Imaging, Comprehensive Heart Failure Center, University Hospital Wuerzburg, Wuerzburg, Germany, 4Department of Radiology, Columbia University, New York, NY, United States

B0 inhomogeneity leads to dark band artifacts in cardiac MRI, in particular with the use of SSFP pulse sequences. Limited spatial resolution of MRI-derived B0 maps prevents the systematic analysis of the problem and the development of optimized B0 shim strategies. Here we demonstrate the potential for simulating both overall and cardiac phase-specific B0 field conditions in the human heart at 3 T at high spatial resolution from anatomical MRI. The results are validated by high-resolution B0 field mapping in the same subjects. This approach is expected to develop population-specific B0 shim strategies from readily available anatomical MRI libraries.

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