| 摘要 |
<p>A method for determining the spatial distribution of magnetic resonance signals from an imaging area, wherein nuclear spins are excited in a spatially encoded fashion through multi-dimensional RF pulses, is characterized in that in a definition step, a resolution grid with resolution grid cells is predetermined, and in accordance with a predetermined phase encoding scheme, an excitation pattern is defined for each phase encoding step, in which the amplitudes within the imaging area are set in accordance with a predetermined distribution identically for each phase encoding step, the amplitudes of the residual resolution grid cells are set to zero, and the phases of the resolution grid cells within the imaging area are set in accordance with the phase encoding scheme, in a preparatory step, the amplitude and phase behavior of the RF pulses to be irradiated is calculated in accordance with a predetermined k-space trajectory for each defined complex excitation pattern of the phase encoding steps and for each transmitting element, in an execution step, the nuclear spins are repeatedly excited, such that spatial encoding is performed within the imaging area during excitation of the nuclear spins.</p> |
