Simultaneous multi-slice recording of magnetic resonance data

A magnetic resonance apparatus comprising:

• a control apparatus configured to:
• determine, for each slice affected by a sub-section of an excitation period of a magnetic resonance sequence, a correction parameter that modifies gradient pulses to be emitted taking into account at least one main magnetic field map that describes a spatial distribution of a main magnetic field and a slice position of each affected slice;
• apply the correction parameter in an emission of the gradient pulses for the respective slice in the sub-section to correct main magnetic field inhomogeneities of a first order;
• and
• simultaneously record magnetic resonance data from at least two different slices by the magnetic resonance sequence,
• wherein the excitation period of the magnetic resonance sequence includes the sub-section,
• wherein the sub-section is a period of time that acts on only one slice of the at least two different slices, and
• wherein the excitation period contains at least one high-frequency pulse.

A non-transitory electronically readable data carrier comprising:

• at least one computer program configured to cause a magnetic resonance apparatus to at least perform:
• determine, for each slice affected by a sub-section of an excitation period of a magnetic resonance sequence, a correction parameter that modifies gradient pulses to be emitted taking into account at least one main magnetic field map that describes a spatial distribution of a main magnetic field and a slice position of each affected slice;
• apply the correction parameter in an emission of the gradient pulses for the respective slice in the sub-section to correct main magnetic field inhomogeneities of a first order;
• and
• simultaneously record magnetic resonance data from at least two different slices by the magnetic resonance sequence,
• wherein the excitation period of the magnetic resonance sequence includes the sub-section,
• wherein the sub-section is a period of time that acts on only one slice of the at least two different slices, and
• wherein the excitation period contains at least one high-frequency pulse.