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.