fused all around in use the dielectric pillow 1 can be covered with a washable pillowcase that can be changed before use of the dielectric pillow 1 with different patients the plastic film of the outer shell 2 can advantageously by disinfected with typical means in the exemplary embodiment the filling 3 is an aqueous sodium polyacrylate gel that incorporates a gadolinium complex as a paramagnetic substance this special filling 3 has the advantage that it is completely safe for the patient in addition to the desired properties of effecting homogenization of the transmitted and received rf fields and being invisible in mr images the effect of such a dielectric element 1 for homogenization of the b 1 field in a magnetic resonance acquisition is schematically shown in fig2 a and 2 b fig2 a shows a patient p located on a patient bed 4 within a magnetic resonance tomography apparatus not shown a b 1 field schematically indicated by field lines is emitted by a radio frequency antenna of the magnetic resonance tomography apparatus the density of the field lines b 1 represents the strength of the b 1 field a local minimum of the b 1 field which typically occurs under real conditions in the abdomen and chest region of the patient in a magnetic resonance scan is shown in the abdomen region of the patient p the field lines are less dense in this region than in the other regions this effect is compensated by the application of a dielectric pillow 1 according to fig1 on the abdomen of the patient p this is schematically shown in fig2 b the dielectric pillow 1 leads to.