Magnetic Resonance Imaging Using Sequence Segment Correlation

A magnetic resonance apparatus having a main magnet unit including a main magnet configured to generate a main magnetic field, a gradient coil arrangement, a radiofrequency coil arrangement, and a control apparatus, comprising:

• a sequence unit configured to control an acquisition process in accordance with an acquisition protocol, which comprises in at least one repetition a plurality of sequence segments of a magnetic resonance sequence, wherein each sequence segment comprises a preparation module and a readout module, and each readout module comprises a plurality of readout submodules, in which, respective radiofrequency pulses precede respective readout time periods for acquiring magnetic resonance data, wherein the sequence unit is configured to use in each readout module at least one navigator submodule for acquiring a navigator dataset of the sequence segment;
• a correlation unit configured to determine correlation information for each sequence segment by comparing the navigator dataset of the sequence segment with at least one navigator dataset of a further sequence segment;
• and
• an evaluation unit configured to evaluate the correlation information in order to select sequence segments, the magnetic resonance data of which is to be discarded, and/or to assign a weighting to the magnetic resonance data of at least some of the sequence segments.