METHOD AND APPARATUS FOR REDUCING ARTIFACTS DURING THE ACQUISITION OF MAGNETIC RESONANCE DATA

摘要

In a method for reducing artifacts during the acquisition of magnetic resonance data relating to a region undergoing examination in an examination subject by operation of a magnetic resonance apparatus, a first magnetic resonance image with a first polarization of a radio-frequency field of the magnetic resonance scanner, which is described by amplitudes and/or phases of coil elements thereof, at least one further magnetic resonance image with at least one further polarization of the radio-frequency field of the magnetic resonance scanner, also described by amplitudes and/or phases of the coil elements, wherein the at least one further polarization differs from the first polarization, and of image data from the first and from at least one further magnetic resonance image are combined.

主权项

1. A method for reducing artifacts during acquisition of magnetic resonance (MR) data from a region of an examination subject, comprising:
operating an MR scanner, while an examination subject is situated therein, to acquire a first set of magnetic resonance image data with a radio-frequency field with a first polarization being radiated by coil elements of the magnetic resonance scanner, with said first polarization being produced by at least one of amplitudes or phases of signal respectively supplied to the coil elements; operating the MR scanner while the examination subject is situated therein to acquire at least one further set of magnetic resonance image data with said coil elements radiating a radio-frequency field having at least one further polarization that differs from said first polarization, said at least one further polarization also being produced by at least one of amplitudes or phases of signals supplied to said coil elements; and in a processor, combining said first set of magnetic resonance image data and said at least one further set of magnetic resonance image data to produce a combined magnetic resonance image dataset, and reconstructing an image of said region from said examination subject from said combined magnetic resonance image dataset, and making the reconstructed image available at an output of the processor as a data file.