Patent ID: 11953572
Assignee: SIEMENS HEALTHINEERS AG
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A method for ascertaining a magnetic field of at least one magnetic coil unit of a magnetic resonance apparatus, the method comprising:
generating, by the at least one magnetic coil unit, the magnetic field, the at least one magnetic coil unit comprising a main magnet for generating a main magnetic field, a gradient coil unit for generating a gradient magnetic field, or the main magnet and the gradient coil unit;
detecting, by a magnetic field sensor unit including at least one magnetic field sensor, a plurality of magnetic field vectors at different positions of the magnetic field, wherein each magnetic field vector of the plurality of magnetic field vectors describes a strength and a direction of the magnetic field at the respective position;
ascertaining, by a processor, the magnetic field, the ascertaining of the magnetic field comprising ascertaining a model of a vector field based on the plurality of magnetic field vectors; and
adjusting the generating of the magnetic field based on the ascertained magnetic field, reconstructing magnetic resonance signals taking the ascertained magnetic field into account, or the adjusting and the reconstructing,
wherein ascertaining the magnetic field comprises decomposing the model of the vector field into separate submodels.