Method for magnetic resonance imaging with correction for fluctuations in the tramsission field strength
US7233145B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2002 |
| Grant date | Jun 19, 2007 |
| Priority date | — |
| Expiry date | Apr 5, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/586
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a method for magnetic resonance imaging, whereby magnetic resonance signals in a region of interest of an examination subject are generated in an examination by applying radio-frequency pulses of a first transmission field strength and the magnetic resonance signals are acquired in a spatially coded manner and allocated to volume elements of the region of interest in order to obtain one or more magnetic resonance images of the region of interest, the sensitivity of each volume element of the region of interest with respect to a modification of the first transmission field strength is determined, deviations of the first transmission field strength from a reference field strength are measured during the examination, and the magnetic resonance signals acquired in the examination are corrected on the basis of the sensitivity determined for each volume element and on the basis of the measured deviations of the first transmission field strength from the reference field strength. The method enables the implementation of fMRI measurements with high precision given fluctuating transmission field strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.