Establishing a magnetic resonance system actuation sequence

A field distribution map analysis apparatus comprising:

• an input interface arrangement configured to detect a number of field distribution maps;
• a field distribution map grouping module configured to establish, based on the number of field distribution maps, a number of clusters of field distribution maps or a number of field distribution representation maps that represent the number of field distribution maps in accordance with a predetermined optimization criterion, wherein the number of field distribution representation maps is less than the number of field distribution maps;
• an output interface arrangement configured to output established field distribution representation maps or position information with respect to a number of field distribution representation slices;
• an RF pulse establishment unit configured to establish a radiofrequency pulse train based on the field distribution maps or the field distribution representation maps;
• and
• a radiofrequency transmission apparatus configured to emit the radiofrequency pulse train into a measurement region using a magnetic resonance system actuation sequence.

A magnetic resonance system comprising:

• a radiofrequency transmission apparatus comprising a gradient system;
• a control apparatus;
• and
• a control sequence establishment apparatus,
• wherein the radiofrequency transmission apparatus is configured to emit a radiofrequency pulse train to carry out a desired measurement based on an actuation sequence and, coordinated therewith, to emit a gradient pulse train by the gradient system, and
• wherein the control sequence establishment apparatus is configured to establish the actuation sequence and transmit the actuation sequence to the control apparatus, the control sequence establishment apparatus comprising:
• an input interface arrangement for detecting a number of field distribution maps;
• a field distribution map grouping module configured to establish, based on the number of field distribution maps, a number of clusters of field distribution maps or a number of field distribution representation maps that represent the number of field distribution maps in accordance with a predetermined optimization criterion, wherein the number of field distribution representation maps is less than the number of field distribution maps;
• and
• an output interface arrangement for outputting established field distribution representation maps or position information with respect to a number of field distribution representation slices.

A non-transitory computer-readable storage medium having stored therein a computer program for carrying out a magnetic resonance system actuation sequence when executed by a computer, the storage medium comprising instructions for:

• acquiring field distribution maps only for a number of field distribution representation slices, wherein the field distribution representation slices represent a number of slices of a measurement region of the magnetic resonance system, wherein the number of field distribution representation slices is less than the number of slices of the measurement region;
• establishing at least one radiofrequency pulse train based on the number of field distribution representation maps;
• and
• operating the magnetic resonance system using the magnetic resonance system actuation sequence, wherein the at least one radiofrequency pulse train is emitted into the measurement region.

A method for establishing a magnetic resonance system actuation sequence, the method comprising:

• acquiring a number of field distribution maps for slices of the measurement region;
• establishing, using a predetermined optimization criterion, a number of field distribution representation maps based on the number of acquired field distribution maps, wherein the number of field distribution representation maps is less than the number of acquired field distribution maps;
• establishing at least one radiofrequency pulse train based on the number of field distribution representation maps;
• and
• operating the magnetic resonance system using the magnetic resonance system actuation sequence, wherein the at least one radiofrequency pulse train is emitted into the measurement region.