Computer implemented method, computer program product, computer-readable storage medium, and system for enhancement of the signal-to-noise ratio of a magnetic field evolution

A computer implemented method for enhancement of the signal-to-noise ratio of a magnetic field evolution for a magnetic resonance imaging apparatus comprising the steps of:

• providing samples of a magnetic field, in particular comprising or consisting of gradients of the magnetic field, acquired at a first respective point in time at at least two different spatial locations,
• providing samples of the magnetic field acquired at a second respective point in time at at least two different spatial locations, said samples being acquired by a field probe array while the field probe array is placed in the magnetic field of an imaging volume of the magnetic resonance imaging apparatus,
• determining a corrected magnetic field evolution with enhanced signal-to-noise ratio based on a spatial-temporal correlation of the samples,
• providing the corrected magnetic field evolution for reconstructing an image or a gradient system calibration,
• optionally reconstructing the image or generating the gradient system calibration based on the corrected magnetic field evolution and providing an output comprising the reconstructed image or the gradient calibration.