title: [A two-point Dixon technique for water-fat separation using multiresolution and region-growing algorithm].
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 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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: School of Biomedical Engineering, Southern Medical University, Guangzhou, 510515, China. E-mail: liubiaoshui@163.com.
authors.forename: Biao-Shui
authors.initials: BS
authors.lastname: Liu
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
authors.forename: Jun-Ying
authors.initials: JY
authors.lastname: Cheng
authors.forename: Jia
authors.initials: J
authors.lastname: Hua
authors.forename: Yan-Qiu
authors.initials: YQ
authors.lastname: Feng
mesh_terms: D000005:Abdomen / Q000000981:diagnostic imaging; D000273:Adipose Tissue / Q000000981:diagnostic imaging*; D000465:Algorithms; D001834:Body Water; D006801:Humans; D007089:Image Enhancement; D007091:Image Processing, Computer-Assisted; D007717:Knee / Q000000981:diagnostic imaging; D008279:Magnetic Resonance Imaging