A two-point Dixon technique for water-fat separation using multiresolution and region-growing algorithm
LIU Biaoshui
ZHANG Jing
CHENG Junying
HUA Jia
FENG Yanqiu
Abstract：Objective An improved water-fat separation method based on region-growing was proposed for use in regions with low signal-noise ratio (SNR).Methods Region-growing method was applied to 4 sub-images acquired by a downsampling operation on the acquired phasor maps.The spatial smoothing constraint was exploited to calculate 4 error phasor maps to construct the final smooth error phasor map,which was used in two-point Dixon technique for water-fat separation.Results The simulation experiment showed that the proposed method produced smaller errors,and for dinical images of the knees,abdomen and lower limbs,the proposed method achieved accurate water-fat separations.Conclusion The proposed method is more robust and reliable than the original global region-growing algorithm,and serves as a promising water-fat separation method for clinical applications.
Keywords：magnetic resonance imagingwater-fat separationphase correctionDixon techniqueregion-growing
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 245-250 )