Method for improving an image quality of a magnetic resonance image, in which - magnetic resonance data of an examination object is detected, which was recorded by means of a magnetic resonance system according to a predetermined measuring sequence, and which is used to reconstruct the magnetic resonance image, - frequency response data for a subsystem (4, 5) of the magnetic resonance system is detected separately from the measuring sequence, - a frequency response correction for the magnetic resonance data or of prescan data is carried out on the basis of the frequency response data, wherein the prescan data is taken into account when reconstructing the magnetic resonance image from the magnetic resonance data, characterised in that the subsystem (4, 5) comprises a replaceable coil, in particular a local coil, which is embodied for use with different magnetic resonance systems and that the magnetic resonance system comprises a, in particular fixedly installed, storage device, in which the frequency response data for at least one specific coil type is stored, wherein - after connecting the replaceable coil with the magnetic resonance system, a check is automatically carried out on the basis of the coil type to determine whether the stored frequency response data matches the connected replaceable coil and if this is the case, - the frequency response correction is carried out on the basis of the frequency response data stored in the storage device. - magnetic resonance data of an examination object is detected, which was recorded by means of a magnetic resonance system according to a predetermined measuring sequence, and which is used to reconstruct the magnetic resonance image, - frequency response data for a subsystem (4, 5) of the magnetic resonance system is detected separately from the measuring sequence, - a frequency response correction for the magnetic resonance data or of prescan data is carried out on the basis of the frequency response data, wherein the prescan data is taken into account when reconstructing the magnetic resonance image from the magnetic resonance data, characterised in that the subsystem (4, 5) comprises a replaceable coil, in particular a local coil, which is embodied for use with different magnetic resonance systems and that the magnetic resonance system comprises a, in particular fixedly installed, storage device, in which the frequency response data for at least one specific coil type is stored, wherein wherein the prescan data is taken into account when reconstructing the magnetic resonance image from the magnetic resonance data, characterised in that the subsystem (4, 5) comprises a replaceable coil, in particular a local coil, which is embodied for use with different magnetic resonance systems and that the magnetic resonance system comprises a, in particular fixedly installed, storage device, in which the frequency response data for at least one specific coil type is stored, wherein - after connecting the replaceable coil with the magnetic resonance system, a check is automatically carried out on the basis of the coil type to determine whether the stored frequency response data matches the connected replaceable coil and if this is the case, - the frequency response correction is carried out on the basis of the frequency response data stored in the storage device.