METHOD AND MAGNETIC RESONANCE APPARATUS TO ACQUIRE MAGNETIC RESONANCE DATA OF A TARGET REGION INCLUDING A METAL OBJECT

摘要

In a method and magnetic resonance (MR) apparatus to acquire MR data of a target region that includes a metal object, an MR sequence that includes at least one radio-frequency excitation to be emitted via a radio-frequency coil arrangement is used. A radio-frequency coil arrangement having multiple coil elements that can be controlled independently with different amplitude and/or phase is used. The amplitudes and/or phases of the coil elements that describe the polarization of the radio-frequency field are selected to at least partially reduce artifacts arising in the metal object due to the radio-frequency excitation, in comparison to a homogeneous, circular polarization of the radio-frequency field of the radio-frequency field in the target region.