Related Experiment Video
Updated: Mar 7, 2026
Author Spotlight: A Non-Invasive Tool to Assess and Differentiate Fat Patterns in Liver Using 3D Dixon MRI
Published on: October 20, 2023
[A two-point Dixon technique for water-fat separation using multiresolution and region-growing algorithm]
Biao-Shui Liu1, Jing Zhang, Jun-Ying Cheng
1School of Biomedical Engineering, Southern Medical University, Guangzhou, 510515, China.
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 down- sampling 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 clinical 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.
