Magnetic resonance apparatus with a coil system with respect to the released heat of certain current regulation

摘要

Magnetic resonance apparatus with a coil system (10, 20) and ‘ shim ’ iron metal sheets (500), wherein the coil system (10, 20) comprises at least:a) an amplifier (100),b) a with the amplifier (100), which is electrically connected coil (200, 201) as well asc) current control means (300) for setting a from the amplifier (100) of the coil (200, 201) supplied current (i), so that, in the coil (200, 201), at least in the average a predetermined power loss is converted into heat and the ‘ shim ’ iron sheets (500), based on this heat in a largely homogeneous temperature field are.