Spiral water–fat imaging with integrated off-resonance correction on a clinical scanner

Authors


Abstract

Purpose

To integrate water-fat–resolved spiral gradient-echo imaging with off-resonance correction into a clinical MR scanner and to evaluate its basic feasibility and performance.

Materials and Methods

Three-point chemical shift imaging was implemented with forward and strongly T2*-weighted reverse spiral sampling and with off-resonance correction after water–fat separation. It was applied in a volunteer study on single breathhold abdominal imaging, which included a brief comparison with Cartesian sampling.

Results

Water-fat–resolved, off-resonance–corrected forward and reverse three-dimensional interleaved spiral imaging was found to be feasible on a clinical MR scanner with only minor changes to the existing data acquisition and reconstruction, and to provide good image quality. Three-point chemical shift encoded data thus support both, water–fat separation and off-resonance correction with high accuracy.

Conclusion

The combination of chemical shift encoding and appropriate postprocessing could pave the way for water-fat–resolved spiral imaging in clinical applications. J. Magn. Reson. Imaging 2010;32:1262–1267. © 2010 Wiley-Liss, Inc.

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