Method and apparatus for reconstructing magnetic resonance images with phase noise-dependent selection of raw data
US10036793B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2016 |
| Grant date | Jul 31, 2018 |
| Priority date | — |
| Expiry date | Feb 4, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/543
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a method and magnetic resonance (MR) apparatus for producing an MR image of a subject, MR signals are acquired respectively with multiple MR signal reception channels, and with an ultra-high basic magnetic field in the MR data acquisition scanner. Each of the acquired MR signals has a phase and exhibiting phase noise, and the acquired MR signals from the multiple MR signal reception channels are entered into a computer, as raw data in which said phase noise is preserved. The computer calculates the respective phase noise of each MR signal reception channel relative to the phase noise in each other MR signal reception channel, and calculates a phase noise map from the relative phase noise calculation for each of said reception channels, the phase noise map representing a spatial distribution of phase noise over the multiple MR signal reception channels. The phase noise map is applied to said raw data and raw data are selected that, dependent on the phase noise map, have a phase noise that is below a predetermined threshold. MR image data are reconstructed only from the selected raw data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.