Magnetic resonance tomography system with interference reduction

A magnetic resonance tomography system comprising:

• a main receive antenna and at least one auxiliary receive antenna arranged outside an examination region, wherein the main receive antenna and the at least one auxiliary receive antenna are each configured to receive a first analysis signal during an analysis phase;
• and
• an interference suppression facility, which is configured, based on the first analysis signals, to determine a first interference source and to determine first weighting factors for the main receive antenna and the at least one auxiliary receive antenna in order to suppress an influence of the first interference source at least partly,
• wherein the interference suppression facility is configured, in accordance with the first weighting factors, to create a combination of second analysis signals, wherein a signal of the second analysis signals is received during the analysis phase by the main receive antenna and a signal of the second analysis signals is received during the analysis phase by the at least one auxiliary receive antenna and, based on the combination of the second analysis signals, the interference suppression facility is configured to determine a second interference source,
• wherein the interference suppression facility is configured to determine second weighting factors for the main receive antenna and the at least one auxiliary receive antenna in order to suppress the influence of the first interference source and to suppress an influence of the second interference source at least partly, and
• wherein the interference suppression facility is configured to create an interference-suppressed magnetic resonance signal as a combination of a magnetic resonance signal and interference signals, wherein during an examination phase lying after the analysis phase, the magnetic resonance signal is received by the main receive antenna and an interference signal is received by each auxiliary receive antenna of the at least one auxiliary receive antenna.

A computer program product having a computer program, wherein, when the computer program is executed by a magnetic resonance tomography system having a main receive antenna and at least one auxiliary receive antenna arranged outside an examination region, the computer program causes the magnetic resonance tomography system to:

• receive, during an analysis phase, a first analysis signal by the main receive antenna and a first analysis signal by the at least one auxiliary receive antenna;
• determine, based on the first analysis signals, a first interference source and first weighting factors for the main receive antenna and the at least one auxiliary receive antenna in order to suppress an influence of the first interference source at least partly;
• receive, during the analysis phase, a second analysis signal by the main receive antenna and a second analysis signal by each auxiliary receive antenna of the at least one auxiliary receive antenna;
• create, using the first weighting factors, a combination of the second analysis signals;
• determine, based on the combination of the second analysis signals, a second interference source;
• determine second weighting factors for the main receive antenna and the at least one auxiliary receive antenna in order to suppress the influence of the first interference source and an influence of the second interference source at least partly;
• receive, during an examination phase after the analysis phase, a magnetic resonance signal from the examination region by the main receive antenna and an interference signal by each auxiliary receive antenna of the at least one auxiliary receive antenna;
• and
• create an interference-suppressed magnetic resonance signal as a combination of the magnetic resonance signal and the interference signals, depending on the second weighting factors.