1. A method for dynamic distortion correction of echo planar imaging (EPI) exposures in magnetic resonance imaging, comprising the steps of: using an EPI sequence, acquiring a plurality of images of an examination subject that are adjacent to each other and that periodically alternatingly differ with regard to at least one characteristic selected from the group consisting of phase information, phase coding direction and echo time; based on the periodically alternating difference, generating at least one map selected from the group consisting of a field map and a displacement map for said images; and generating at least one distortion-corrected image from at least one of said adjacent images using said map.