Method and apparatus for preventing artifacts due to magnetic field outside of field of view
US6498485B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2000 |
| Grant date | Dec 24, 2002 |
| Priority date | — |
| Expiry date | Apr 21, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/56518
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In order to provide a gradient magnetic field application method and apparatus for preventing artifacts due to a magnetic field outside a field of view (FOV), and a magnetic resonance imaging apparatus employing such a gradient magnetic field application apparatus, in performing a plurality of RF excitations of spins of atomic nuclei within a subject to be imaged in the presence of a gradient magnetic field and producing an image based on magnetic resonance signals generated by the spins, at least the polarity of the gradient magnetic field in a first RF excitation (G90) and the polarity of the gradient magnetic field in the next RF excitation (G180) are made opposite to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.