MRI apparatus
US11079451B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2018 |
| Grant date | Aug 3, 2021 |
| Priority date | — |
| Expiry date | Aug 31, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/3621
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In one embodiment, an MRI apparatus includes a gradient coil, a receiving circuit, and processing circuitry. The gradient coil is configured to superimpose a gradient magnetic field on a static magnetic field. The receiving circuit is configured to receive an MR (magnetic resonance) signal from an object placed in the gradient magnetic field. The processing circuitry is configured to estimate time variation of an MR (magnetic resonance) frequency during a sampling period of the MR signal based on waveform data of a gradient current applied to the gradient coil, perform correction on a frequency or phase of the MR signal received by the receiving circuit based on the estimated time variation of the MR frequency during the sampling period, and reconstruct an image by using the MR signal subjected to the correction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.