System and method for reducing motion artifacts in magnetic resonance imaging

Abstract

Systems and methods for reconstructing images from motion-affected k-space data are provided. In one example, a method includes acquiring (802) k-space data of a spin-echo magnetic resonance imaging (MRI) examination of a subject, the k-space data including a plurality of echo train lengths (ETLs), where each ETL includes a subset of lines of the k-space data. The method further includes identifying (806) a subset of the plurality of ETLs of the k-space data that corresponds to a primary gesture of the subject; generating (812) an under-sampled version of the k-space data, the under-sampled version comprising only the ETL subset; inputting (816) the undersampled version of the k-space data as input to a reconstruction model trained to output a reconstructed image based on the undersampled version of the k-space data; and displaying (820) the reconstructed image on a display device and / or saving the reconstructed image in a memory.

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