Combination of fluid-attenuated inversion-recovery complex images acquired using magnetic resonance imaging
US6486667B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2000 |
| Grant date | Nov 26, 2002 |
| Priority date | — |
| Expiry date | Oct 3, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/56
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of MRI includes supporting a subject in an examination region of an MRI scanner, and setting up a spin system with a net magnetization. An inversion pulse is applied which inverts the magnetization of the spin system in a selected volume of the subject. As the magnetization re-grows, a first set of raw data is generated by acquiring MR signals from a series of regions within the selected volume. For the first set of raw data, the series of regions are acquired in a first temporal order with respect to the inversion pulse. The inversion pulse is re-applied, and as the magnetization re-grows, a second set of raw data is generated in similar fashion to the first. However, for the second set of raw data, the series of regions are acquired in a second temporal order with respect to the inversion pulse. The second temporal order is different from the first temporal order. From the first and second sets of raw data, respectively, first and second sets of complex image data are generated. A complex phase correction factor is then determined and applied to one of, or both, the first and second sets of complex image data to thereby phase match the same. A combined image is generated…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.