Patent ID: 8199992
Filing Date: 2012-06-12
Classification: G01R

Abstract:
1. A method for correction of distortion, created by discrepancies in a basic magnetic field of a magnetic resonance scanner from a nominal value, in image data records recorded via the magnetic resonance scanner, comprising: 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 in direction over two dimensions; 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 at least one of the first and the second image data record on the basis of the received transformation shift field; correcting the distortion of at least one of the first and second image data record on the basis of the calculated correction shift field; and at least one of displaying and storing the at least one corrected image data record.