Chemical shift imaging with field inhomogeneity correction
US4661775A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1985 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | Jul 15, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/485
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In an NMR system, two chemical shift components are separated by correcting NMR data for field inhomogeneity. A first image data set is acquired which contains no chemical shift information or field inhomogeneity. A second image data set is acquired which contains both chemical shift information and field inhomogeneity. A third image data set is acquired which contains field inhomogeneity information. The first and third image data sets are combined to identify the field inhomogeneity information. This intermediate field image is then used to correct the second image data set for field inhomogeneity. The first image data set and corrected second image data set may then be combined by magnitude reconstruction of complex sums and differences to separate the two chemical shift components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.