Method and system for acquiring magnetic flux densities of a magnetic resonance device

A system for acquiring magnetic flux densities of a magnetic resonance device within a patient tunnel of the magnetic resonance device, the system comprising:

• a processing circuit;
• a storage medium;
• and
• a data interface,
• wherein the storage medium comprises a computer program with instructions that, on execution of the program, cause the processing circuit to acquire magnetic flux densities of a magnetic resonance device within a patient tunnel of the magnetic resonance device, the acquisition of the magnetic flux densities comprising:
• ascertainment of a first spatial direction, a second spatial direction, or the first spatial direction and the second spatial direction in which the magnetic flux density/densities of a B0 magnetic field of a B0 main magnet of the magnetic resonance device within the patient tunnel is or are below a predefined value at at least one position;
• arrangement of at least one magnetic field strength sensor at the at least one position within the patient tunnel, wherein the magnetic field strength sensor is arranged and configured to acquire the magnetic flux density at least in the first spatial direction, in the second spatial direction, or in the first spatial direction and in the second spatial direction;
• and
• acquisition of the magnetic flux density/densities using the at least one magnetic field strength sensor in the first spatial direction, in the second spatial direction, or in the first spatial direction and in the second spatial direction, and
• wherein the data interface is configured to receive the magnetic flux densities acquired by the at least one magnetic field strength sensor in the first spatial direction and in the second spatial direction.

A method of using at least one magnetic flux density, the method comprising:

• acquiring magnetic flux densities of a magnetic resonance device within a patient tunnel of the magnetic resonance device, the acquiring of the magnetic flux densities comprising:
• ascertaining a first spatial direction, a second spatial direction, or the first spatial direction and the second spatial direction in which the magnetic flux density/densities of a B0 magnetic field of a B0 main magnet of the magnetic resonance device within the patient tunnel is or are below a predefined value at at least one position;
• arranging at least one magnetic field strength sensor at the at least one position within the patient tunnel, wherein the at least one magnetic field strength sensor is arranged and configured to acquire the magnetic flux density at least in the first spatial direction, in the second spatial direction, or in the first spatial direction and in the second spatial direction;
• and
• acquiring the magnetic flux density/densities using the at least one magnetic field strength sensor in the first spatial direction, in the second spatial direction, or in the first spatial direction and in the second spatial direction;
• and
• using the at least one magnetic flux density for:
• a nominal/actual value comparison of magnetic flux densities;
• a method for image reconstruction;
• monitoring one or more magnetic flux densities of the at least one magnetic flux density;
• or
• any combination thereof.