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Abstract #2541

Assessment of Myocardial B0 over the Cardiac Cycle at 7.0T: Implications for Susceptibility-based CMR Techniques

Teresa Serradas Duarte1, Till Huelnhagen1, and Thoralf Niendorf1,2

1Berlin Ultrahigh Field Facility (B.U.F.F.), Max Delbrück Center for Molecular Medicine in the Helmholtz Association, Berlin, Germany, 2Experimental and Clinical Research Center, a joint cooperation between the Charité Medical Faculty and the Max Delbrück Center in the Helmholtz Associaiton, Berlin, Germany

Magnetic susceptibility-based methods are an emerging technique in CMR for myocardial tissue characterization. Making use of UHF MRI, temporally resolved myocardial T2* mapping was recently demonstrated. Since susceptibility weighted MRI is highly dependent on main magnetic field homogeneity, B0 assessment is crucial for interpretation of results. This pioneering study investigates B0 variation in the heart over the cardiac cycle at 7.0T and its implications for myocardial T2* mapping in a cohort of healthy volunteers. Results show that septal macroscopic field inhomogeneities are minor regarding their effects on T2*. This provides encouragement for temporally resolved susceptibility-based CMR at UHF.

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