Chinese Journal of Magnetic Resonance ›› 2012, Vol. 29 ›› Issue (4): 547-553.

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A Water-Fat Separation Magnetic Resonance Image Method Based on Inversion Recovery

 LI Shao-rui1,3,4*, WENG De-He2,3,4, CHEN Hui-Cheng5   

  1. 1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Center for Magnetic Resonance (Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences), Wuhan 430071, China;
    2. State Key Laboratory of Brain and Cognitive Science, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China;
    3. University of Chinese Academy of Sciences, Beijing 100049, China;
    4. Siemens Shenzhen Magnetic Resonance Ltd. Shenzhen  518057, China;
    5. Shenzhen Water Technology Service Co. Ltd. Shenzhen 518005, China
  • Received:2012-03-09 Revised:2012-05-08 Online:2012-12-05 Published:2012-12-05
  • Contact: LI Shao-rui1,shaorui_lee@163.com E-mail:shaorui_lee@163.com

Abstract:

A water-fat separation magnetic resonance image (MRI) method based on inversion recovery technique, aiming to obtain water-only and fatonly images, was introduced. Base on different T1 relaxation time of water and fat, two different inversion recovery time (TI) was used to acquire two sets of MRI images with different water-fat signal contribution. With the images having different water and fat contributions, the water-only and fat-only images can be calculated by solving equations describing the relationship between the total signal intensity and the water/fat signal intensities. It was demonstrated that this method can be used to separate water and fat signals correctly and avoid the water-fat swap artifact that occurred sporadically in conventional Dixon method. With this method, no complex phase correction was needed, making the computation more simple and stable.

Key words: MRI, water-fat separation, inversion recovery, T1

CLC Number: