Method for producing spatially encoded measuring signals

Abstract

In a method for producing spatially encoded measuring signals of nuclear magnetic resonance from a measuring object, wherein nuclear spins are excited in the measuring object through irradiation of radio frequency (RF) pulses, encoding in reciprocal spatial space (k space) is generated through application of a phase gradient in n dimensions and a magnetic resonance signal from the measuring object is then recorded, wherein k space is scanned in a desired region between kmin and kmax through corresponding repetition of the excitation, encoding and recording steps with different respective phase gradients, and wherein the individual magnetic resonance signals are each associated with a certain weighting (acquisition filter) which is predetermined by the dependence of a desired spatial response function, the time TR(kn) between the start of the (n−1)th excitation step for scanning the measuring signal which corresponds to the point kn−1 in k space and the start of the nth excitation step for scanning the measuring signal which corresponds to the point kn in k space, is selected such that the signal intensity in the nth recording step corresponds to the weighting predetermined by the acquisition filter in dependence on the instantaneous position kn in k space which is to be scanned. The filter is already realized during data recording and can be effected with only one accumulation.

Dependencies are inferred from the claim text.