MR method for generating navigator pulses
AssigneeKoninklijke Philips Electronics N.V.
InventorsKay Nehrke, Peter Bornert
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Abstract
The invention relates to an MR method in which a navigator pulse is generated so as to excite the nuclear magnetization in a spatially limited volume by means of at least one RF pulse and at least two gradient magnetic fields having gradients which extend differently in respect of time and space, after which at least one MR signal is received from the volume in conjunction with a further gradient magnetic field, so as to be evaluated. In order to enhance the navigator pulse, such a variation in time is imposed on the gradient magnetic fields that there are generated at least two MR signals which correspond to an excitation in the k space along mutually offset trajectories, and the MR signals are combined.
Claims12
An MR method in which a navigator pulse is generated so as to excite the nuclear magnetization in a spatially limited volume by means of at least one RF pulse and at least two gradient magnetic fields having gradients which extend differently in respect of time and space, after which at least one MR signal is received from the volume, in conjunction with a further gradient magnetic field, so as to be evaluated, characterized in that the variation in time of the gradient magnetic fields is such that there are generated at least two MR signals which correspond to an excitation in the k space along mutually offset trajectories, and in that the MR signals are combined.
Dependencies are inferred from the claim text.