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

✍ Scribed by Peter Börnert; Peter Koken; Holger Eggers

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 420 KB
• Volume: 32
• Category: Article
• ISSN: 1053-1807
• DOI: 10.1002/jmri.22336

✦ Synopsis

To integrate water-fat-resolved spiral gradientecho 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 T 2 *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.