Patent ID: 9632160
Date: 2017-04-25
CPC Classifications: G01R

Claim:
1. A method to determine a pulse sequence for operating a magnetic resonance system, comprising: providing control protocol parameters to a processor that define operational features of said magnetic resonance system in order to acquire magnetic resonance data from a subject, said control protocol parameters being selected from the group consisting of a sequence type of a pulse sequence for operating said magnetic resonance system to acquire said magnetic resonance data from the subject, an echo time in said pulse sequence, a repetition time of said pulse sequence, a resolution of said magnetic resonance data, a readout bandwidth of said magnetic resonance data, and a target magnetization of nuclear spins in the subject; in said processor, automatically determining, dependent on said control protocol parameter values, a plurality of k-space trajectory node points of a trajectory that will be traversed in k-space in order to enter said magnetic resonance data into k-space, said trajectory comprising a plurality of trajectory branches that are successively traversed in said trajectory, each branch having a starting point in k-space and an ending point in k-space and each node point coinciding with one of the respective starting points or ending points; and in said processor, for each k-space trajectory node point, determining a node point time associated therewith that is a time, following a start of said trajectory, at which said magnetic resonance data are entered at the respective k-space trajectory node point, dependent on at least some of said control parameter values; in said processor, determining respective k-space trajectories, and curves of a gradient pulse series, needed to reach the respective k-space trajectory node point at the respective trajectory node point time associated therewith; and in said processor, determining said pulse sequence for operating said magnetic resonance system based on said plurality of k-space trajectory node points and said curves of said gradient pulse series, and making said pulse sequence available at an output of said processor in electronic form with a format for operating said magnetic resonance system.