Method and MRI device to detect a direction of at least one fiber in a body
US8907671B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 17, 2011 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | Nov 22, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/56341
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method to extract a diffusion direction from DW-MR signals, in which a magnetic field gradient qi is applied to a body part, a magnetic resonance signal Si is measured and a diffusion direction μj is determined, wherein for a predetermined positive number m of diffusion direction(s) μj, the signals Si are linked to the probability density function of the random vector X of water molecules displacements represented as a mixture of m probability density functions pXj of random vectors Xj characterizing the diffusion along μj, the Xj being decomposed into a first component modelling directional variability of the water molecules displacements with μj as mean direction, and into a second component modelling the length variability of the water molecules displacements along μj.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.