Method and device for controlling a magnetic resonance tomography system for magnetic resonance fingerprinting measurements

A Magnetic Resonance Fingerprinting (MRF) processor for controlling a magnetic resonance tomography system for an MRF measurement, the MRF processor comprising:

• a dictionary group generator and/or a data interface;
• the dictionary group generator being configured to create a dictionary group, and the data interface being configured to receive the dictionary group supplied thereto, wherein the dictionary group includes at least two dictionaries each containing a multiplicity of different intensity profiles of image dots from a series of magnetic resonance tomography (MRT) recordings with a specific sampling scheme;
• a preliminary recorder configured to prepare a preliminary recording of MRT measurements;
• a determiner configured to determine and define a sampling scheme based on the preliminary recording;
• a selector configured to select a dictionary from the at least two dictionaries of the dictionary group based on the preliminary recording;
• and
• an evaluator configured to perform an MRF measurement using the defined sampling scheme and an MRF evaluation based on the selected dictionary.

A method for producing a magnetic resonance tomography system, the method comprising:

• setting up the magnetic resonance tomography system;
• providing a number of reference phantoms in the magnetic resonance tomography system;
• preparing a multiplicity of magnetic resonance tomography (MRT) recordings, from the number of reference phantoms, with varying recording parameters;
• creating a plurality of dictionaries of pixel-based intensity profiles of the MRT recordings, a specific sampling scheme being used for creation of each of the dictionaries;
• and
• saving the plurality of dictionaries as a dictionary group, in a memory of the magnetic resonance tomography system, together with:
• information for each dictionary of the plurality of dictionaries indicating sampling scheme was used for the corresponding dictionary, and information indicating an intended examination region of the corresponding dictionary.