System and method for object-based initialization of magnetic field inhomogeneity in magnetic resonance imaging
US9612300B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2013 |
| Grant date | Apr 4, 2017 |
| Priority date | — |
| Expiry date | Oct 3, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/4828
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An object-based approach is used to initialize the magnetic field inhomogeneity estimation for chemical species separation, such as water-fat separation, and other imaging applications. For example, a susceptibility distribution in the subject being imaged is estimated from images reconstructed from single-echo or multi-echo k-space data and used to initialize the magnetic field inhomogeneity estimation. This approach can be applied to any complex-based chemical shift encoded chemical species separation technique and to other imaging applications, such as susceptibility-weighted imaging and quantitative susceptibility mapping. The field map can also be used to correct for image distortions and to generate magnetic field shimming values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.