Patent Document ID: 8774475
Application ID: 13257315
Patent Flag: 1

Claim One:
1. A method of differentiating between water and fat tissue in magnetic resonance image (MRI) data, comprising: measuring a first signal (I 1 ) and a second signal (I 2 ) at different arbitrary echo times during a magnetic resonance (MR) scan of a subject; calculating first and second components (B, S) from the first and second signals; deriving two differential phase error candidates (Δφ l , Δφ 2 ) from the first and second components (B, S); selecting, for each pixel, one of the derived differential phase error candidates (Δφ), based on an assumption of smoothness of disturbing field inhomogeneity; reconstructing a water image and a fat image using the selected differential phase error candidate (Δφ).