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Abstract #0773

Three-Point Dixon Method for Whole-Body Water/fat Imaging

Johan Berglund1, Lars Johansson1, Hkan Ahlstrm1, Joel Kullberg1

1Department of Radiology, Uppsala University, Uppsala, Sweden

A three-point Dixon method applicable for water/fat separation of whole-body datasets is presented. In each voxel, two alternative error phasors are found analytically. The correct error phasor is identified by imposing spatial smoothness in a 3D multi-seed region growing scheme with a dynamic path. After removing the phase errors, water and fat signal components are found in each voxel by least squares fitting. Whole-body water and fat images were reconstructed from 39 volunteer subjects, and the images were subjectively graded by two radiologists. The method was found to achieve fast and accurate whole-body water/fat separation.