A method and apparatus for reducing the effects of motion of a subject
during image acquisition is presented. The method is particularly
suitable for correcting the motion during magnetic resonance imaging. The
method involves comparing an image with a reference image in the spatial
frequency domain to determine the extent of any rotational and/or
translational motion and then apply an appropriate correction. Any motion
is modeled by comparison with the reference image but the corrected image
is produced using information from the corrupted image alone.