Active coil to shift a volume of uniform magnetic field
US10078121B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2017 |
| Grant date | Sep 18, 2018 |
| Priority date | — |
| Expiry date | Oct 19, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/381
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Gradient coils are operated to acquire magnetic resonance (MR) signals encoding a first MRI image over a first region inside a main magnet of the MRI system in which at least a portion of a subject is placed, the first region being located within a volume of uniform magnetic field with inhomogeneity below a defined threshold. An active coil is energized to shift the volume of uniform magnetic field such that a second region inside the main magnet of the MRI system is located within the shifted volume of uniform magnetic field, at least a portion of the second region being located outside of the volume of uniform magnetic field before the volume of uniform magnetic field has been shifted. The gradient coil is operated to acquire MR signals encoding a second MRI image over the second region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.