1. A method for processing magnetic resonance imaging (MRI) data, comprising: receiving MRI data comprising a plurality of k-space points; deriving a plurality of image data sets based on the MRI data, each of the plurality of MRI image sets obtained by zeroing a different one of the plurality of k-space points; computing image space metric values for each of the plurality of image data sets; adjusting a portion of the MRI data associated with ones of the total variation values that fail to meet a threshold value to yield adjusted MRI data.