Magnetic resonance imaging method and apparatus
US6326786A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1999 |
| Grant date | Dec 4, 2001 |
| Priority date | — |
| Expiry date | Dec 17, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/5611
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a method for obtaining images by means of magnetic resonance (MR) of an object placed in a static magnetic field which method includes simultaneous measurement of a number sets of MR signals by application gradients and an array of receiver coils, reconstruction of a number of receiver coil images from the sets MR signals measured and reconstruction of a final image from a distant dependent sensitivity of the receiver coils and the first plurality of receiver coil images. In order to reduce the acquisition time the number of phase encoding steps corresponding to the phase-encoding gradient is reduced with a reduction factor compared to standard Fourier imaging, while a same field of view is maintained as in standard Fourier imaging. In this way fast cardiac imaging may be possible. According to the invention the calculation of complicated matrix inversion can be simplified by determining of an image vector of the final image from a combination of a generalized inverse of a sensitivity matrix and a receiver coil image vector. In this way aliasing artifacts in the final image are reduced. Furthermore, the reconstruction method enables application of non integ…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.