Patent · US Active

Systems and methods for field mapping in magnetic resonance imaging

US10234521B2 · kind B2 · utility

1Cited by

7References

24Claims

0Family size

Inventors

Junmin Liu · London, CA
Maria Drangova · London, CA

Key dates

Filing date	Apr 24, 2015
Grant date	Mar 19, 2019
Priority date	—
Expiry date	Feb 28, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG01R33/50
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Various embodiments of the present disclosure present unwrapping based B0 mapping systems and methods. An initial B0 map is obtained by unwrapping a pseudo-in-phase complex data that is generated from selected echoes of multi-echo gradient echo image data. Global and local phase errors that are present in the initial B0 map are corrected to produce a phase-error-corrected B0 map. A bias frequency shift is employed to produce a corrected fat-fraction map based on the phase-error-corrected B0 map. The corrected fat-fraction map is employed to generate a final B0 map.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.