Method for correction of distortion in image data records recorded by means of a magnetic resonance scanner, as well as a computer program, image processing unit and magnetic resonance scanner for carrying out the method

Abstract

A method is disclosed for correction of distortion, which is created by way of discrepancies in a basic magnetic field of a magnetic resonance scanner, in image data records which are recorded via the magnetic resonance scanner. In at least one embodiment, the method includes loading a first image data record, recorded via the magnetic resonance scanner with a first frequency coding gradient, of an examination region; loading a second image data record, recorded via the magnetic resonance scanner but using a second frequency coding gradient, of the same examination region, with the first and the second frequency coding gradient being different; receiving a transformation shift field as final result of a registration process of the first and the second image data record; calculating a correction shift field for the first and/or the second image data record on the basis of the calculated transformation shift field; correcting the distortion of the first and/or second image data record on the basis of the calculated correction shift field; and displaying and/or storing the corrected image data record or the corrected image data records. A computer program, an image processing unit and a magnetic resonance scanner for carrying out the method are also disclosed.

Dependencies are inferred from the claim text.