MRI scanner with active interference suppression and interference suppression method for an MRI scanner

A method for operation of an MRI scanner, wherein the MRI scanner has a patient tunnel, a first receiving antenna for receiving a magnetic resonance signal from a patient in the patient tunnel, a second receiving antenna for receiving a signal with the Larmor frequency of the magnetic resonance signal, and a receiver, wherein the second receiving antenna is arranged outside the patient tunnel or in a vicinity of an opening of the patient tunnel, the method comprising:

• receiving an interference signal by the receiver via the second receiving antenna;
• receiving a magnetic resonance signal by the receiver via the first receiving antenna;
• processing the magnetic resonance signal as a function of the interference signal by the receiver to a receive signal, wherein a dependency is a function of a parameter;
• setting the parameter by the receiver, so that a portion of the interference signal is reduced in the receive signal, wherein the parameter is a first parameter, and the portion of the interference signal is a first portion of the interference signal;
• receiving a frequency portion of the interference signal close to the Larmor frequency by the receiver via the second receiving antenna;
• processing the magnetic resonance signal as a function of the frequency portion of the interference signal by the receiver to the receive signal, wherein the dependency is a function of a second parameter;
• and
• setting the second parameter by the receiver, so that a second portion of the interference signal is reduced in the receive signal.

In a non-transitory computer-readable storage medium that stores instructions executable by a controller of an magnetic resonance imaging (MRI) scanner for operation of a magnetic resonance imaging (MRI) scanner, wherein the MRI scanner has a patient tunnel, a first receiving antenna for receiving a magnetic resonance signal from a patient in the patient tunnel, a second receiving antenna for receiving a signal close to the Larmor frequency of the magnetic resonance signal, and a receiver, wherein the second receiving antenna is arranged outside the patient tunnel or in a vicinity of an opening of the patient tunnel, the instructions comprising:

• receiving a magnetic resonance signal by the receiver via the first receiving antenna;
• suppressing a wideband interference signal received with the second receiving antenna outside a frequency range of the magnetic resonance signal in the magnetic resonance signal received by the first receiving antenna, the suppressing of the wideband interference signal comprising:
• receiving a frequency portion of the interference signal close to the Larmor frequency by the receiver via the second receiving antenna;
• processing the magnetic resonance signal as a function of the frequency portion of the interference signal by the receiver to a receive signal, wherein a dependency is a function of a parameter;
• and
• setting the parameter by the receiver, so that a portion of the interference signal is reduced in the receive signal.