Cardiac MRI with T2*-contrast at 7T is of particular interest because it is highly sensitive to cardiac tissue alterations after myocardial injury. A reliable T2*-contrast quantification and usage for tissue characterization require minimization of the inhomogeneity of the B0-field in the heart. In this work, we analyzed the B0-conditions achievable in longitudinal T2* measurements in the hearts of domestic pigs which during the experiment grew from 30 to 90 kg. B0 distribution statistics were summarized for the maps of individual slices. Demands on the 7T-scanners B0-shimming hardware (up to 3rd-order spherical harmonics) were analyzed.
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