Correction method and magnetic resonance device

A magnetic resonance device, comprising:

• a magnet unit;
• high frequency coils;
• a gradient coil unit;
• an ECG measuring apparatus configured to record an ECG signal data record from a second signal acquired by the ECG measuring apparatus at a second position relative to the magnetic resonance device;
• a position-recording unit configured to record movement of the ECG measuring apparatus relative to the magnetic resonance device;
• and
• a correction data record determining unit configured to:
• determine a correction data record from a first signal acquired by the ECG measuring apparatus when said ECG measuring apparatus is located at a first position relative to the magnetic resonance device, the first position being spaced apart from the second position, wherein the correction data record is based on an estimation of a first impulse response at the first position of the ECG measuring apparatus,
• determine a modified correction data record as a function of the correction data record and the first and the second position of the ECG measuring apparatus, wherein a determination of the modified correction data record is based on an estimation of a second impulse response defined by a product of a) the first impulse response at the first position of the ECG measuring apparatus time and b) a quotient
• z
• ⁢
• ⁢
• 1
• z
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• 0
• ,
• wherein z0 represents a coordinate indicative of the first position of the ECG measuring apparatus, and further wherein z1 represents a coordinate indicative of the second position of the ECG measuring apparatus, and
• correct the noise in the ECG signal data record from the second signal acquired by the ECG measuring apparatus at the second position, wherein the noise correction is based on the modified correction data record without having to estimate a further impulse response at the second position.