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[A two-point Dixon technique for water-fat separation using multiresolution and region-growing algorithm].
Liu, Biao-Shui; Zhang, Jing; Cheng, Jun-Ying; Hua, Jia; Feng, Yan-Qiu.
Affiliation
  • Liu BS; School of Biomedical Engineering, Southern Medical University, Guangzhou, 510515, China. E-mail: liubiaoshui@163.com.
Nan Fang Yi Ke Da Xue Xue Bao ; 37(2): 245-250, 2016 Feb 20.
Article in Zh | MEDLINE | ID: mdl-28219871
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.
Subject(s)

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Algorithms / Image Processing, Computer-Assisted / Image Enhancement / Adipose Tissue Type of study: Prognostic_studies Limits: Humans Language: Zh Journal: Nan Fang Yi Ke Da Xue Xue Bao Year: 2016 Document type: Article Country of publication: China

Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Algorithms / Image Processing, Computer-Assisted / Image Enhancement / Adipose Tissue Type of study: Prognostic_studies Limits: Humans Language: Zh Journal: Nan Fang Yi Ke Da Xue Xue Bao Year: 2016 Document type: Article Country of publication: China