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
US8199992B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 2008 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Apr 12, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/56572
- WIPO fieldMeasurement
- WIPO sectorInstruments
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…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.