Method for contrast-agent-free angiographic imaging in magnetic resonance tomography
US8571631B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 23, 2009 |
| Grant date | Oct 29, 2013 |
| Priority date | — |
| Expiry date | Jul 24, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/5614
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for contrast-agent-free non-triggered angiographic imaging in magnetic resonance tomography that includes the steps of (S1) 2D or 3D measurement of a bodily region having a flow of blood, using a flow-insensitive SSFP sequence, (S2) measurement of the same bodily region using a flow-sensitive SSFP sequence, (S3) registration of the measurement results obtained in steps S1 and S2 to one another, (S4) unweighted or self-weighted subtraction of the registered measurement result obtained in step S2from the registered measurement result obtained in step S1, (S5) execution of a 2D or 3D image correction of the image obtained in step S4by removing image distortions caused by gradient field inhomogeneities and/or magnetic basic field inhomogeneities, and (S6) representation of the angiogram obtained in step S5 in the form of an MIP or segmented 2D or 3D vessel tree representation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.