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.
