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Abstract #3777

Magnetic Field Dependence of Myocardial R2* Values and Segmental Myocardial Field Inhomogeneity Assessed at 1.5 T, 3.0 T and 7.0 T.

Antonella Meloni1, Fabian Hezel2, Vincenzo Positano1, Petra Keilberg1, Alessia Pepe1, Thoralf Niendorf2, 3, Massimo Lombardi1

1Cardiovascular MR Unit, Fondazione G. Monasterio CNR-Regione Toscana and Institute of Clinical Physiology, Pisa, Italy; 2Berlin Ultrahigh Field Facility B.U.F.F, Max-Delbrueck Center for Molecular Medicine, Berlin, Germany; 3Experimental and Clinical Research Center (ECRC), Charit Campus Buch, Humboldt-University, Berlin, Germany

Although R2* relaxation is a complicated process, our results suggest a nearly linear field dependence of cardiac R2*. Admittedly, at 7T the pronounced propensity to macroscopic susceptibility artefacts is challenging and it seemed to spare only the septal regions. The most severe artifact source was the heart-lung interface.