Optimizing a pulse sequence using an optimization map
AssigneeSiemens Healthineers AG
InventorsJürgen Herrler, Patrick Liebig
Life of this patent
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Abstract
A method for optimizing a pulse sequence includes acquiring a B0 map. A B1 map is acquired for each of at least one transmission channel of a magnetic resonance apparatus. Based on the acquired B0 map and at least one B1 map, a preliminary dynamic pulse is established. For each of the at least one transmission channel, the preliminary dynamic pulse includes a preliminary RF pulse. At least one optimization map is established based on the preliminary dynamic pulse. Each of the at least one optimization map describes a distribution of an optimization parameter resulting from the preliminary dynamic pulse. An initial pulse sequence is provided. An optimized pulse sequence is established based on the initial pulse sequence and the optimization map.
Claims18
A method for optimizing a pulse sequence for investigating a patient with a magnetic resonance apparatus, the method being computer-implemented and comprising:
- acquiring a B0 map and a B1 map for each of at least one transmission channel of the magnetic resonance apparatus;
- establishing a preliminary dynamic pulse based on the at least one B0 map and the at least one B1 map, wherein the preliminary dynamic pulse comprises a preliminary radio frequency (RF) pulse for each of the at least one transmission channel;
- establishing at least one optimization map based on the preliminary dynamic pulse, wherein each of the at least one optimization map describes a distribution of an optimization parameter resulting from the preliminary dynamic pulse;
- providing an initial pulse sequence;
- and
- establishing an optimized pulse sequence based on the initial pulse sequence and the at least one optimization map.
A magnetic resonance apparatus comprising:
- a system controller configured to optimize a pulse sequence for investigating a patient with the magnetic resonance apparatus, the system controller being configured to optimize the pulse sequence comprising the system controller being configured to:
- acquire a B0 map and a B1 map for each of at least one transmission channel of the magnetic resonance apparatus;
- establish a preliminary dynamic pulse based on the at least one B0 map and the at least one B1 map, wherein the preliminary dynamic pulse comprises a preliminary radio frequency (RF) pulse for each of the at least one transmission channel;
- establish at least one optimization map based on the preliminary dynamic pulse, wherein each of the at least one optimization map describes a distribution of an optimization parameter resulting from the preliminary dynamic pulse;
- provide an initial pulse sequence;
- and
- establish an optimized pulse sequence based on the initial pulse sequence and the at least one optimization map.
In a non-transitory computer-readable storage medium that stores instructions executable by a system controller of a magnetic resonance apparatus to optimize a pulse sequence for investigating a patient with the magnetic resonance apparatus, the instructions comprising:
- acquiring a B0 map and a B1 map for each of at least one transmission channel of the magnetic resonance apparatus;
- establishing a preliminary dynamic pulse based on the at least one B0 map and the at least one B1 map, wherein the preliminary dynamic pulse comprises a preliminary radio frequency (RF) pulse for each of the at least one transmission channel;
- establishing at least one optimization map based on the preliminary dynamic pulse, wherein each of the at least one optimization map describes a distribution of an optimization parameter resulting from the preliminary dynamic pulse;
- providing an initial pulse sequence;
- and
- establishing an optimized pulse sequence based on the initial pulse sequence and the at least one optimization map.
Dependencies are inferred from the claim text.