Method and apparatus for the measurement, characterization and correction of geometric distortions in magnetic resonance imaging
US9857443B2 · kind B2 · utility
6Cited by
7References
47Claims
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Key dates
| Filing date | Mar 14, 2014 |
| Grant date | Jan 2, 2018 |
| Priority date | — |
| Expiry date | Nov 3, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/4808
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Various embodiments are described herein for an apparatus and a method for measuring and characterizing geometric distortions for a region of interest in images obtained using magnetic resonance. The method comprises deriving a computed set of 3D distortion vectors for a set of points within a region of interest covered by a phantom by using harmonic analysis to solve an associated boundary value problem based on boundary conditions derived from a measured set of 3D distortion vectors. The characterized image distortions may be used for various purposes such as for image correction or for shimming, for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.