Chinese Journal of Magnetic Resonance

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A Review on the Inversion Methods in 2D NMR

ZHOU Xiao-long1, NIE Sheng-dong1*, WANG Yuan-jun1,ZHANG Ying-li2, YANG Pei-qiang2   

  1. 1. Institute of Medical Imaging Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China;
    2. Shanghai Niumag Corporation, Shanghai 200333, China
  • Received:2012-09-10 Revised:2012-10-29 Online:2013-06-05 Published:2013-06-05
  • About author:*Corresponding author: Nie Sheng-dong,Tel: 021-55271172,E-mail: nsd4647@163.com.
  • Supported by:

    国家自然科学基金资助项目(60972122), 上海市重点学科建设资助项目(P0502).

Abstract:

Two-dimensional (2D) NMR parameter maps are widely used in NMR-based well logging and conventional NMR experiments to distinguish different components in mixtures. In recent years, much research efforts were dedicated to develop inversion algorithms that could convert raw experimental data into 2D NMR maps. This paper reviews the recent progresses in this area of research. The methodological complexity of 2D inversion, relative to 1D inversion, was discussed. There are two major approaches for 2D inversion: regularization using penalty terms and regularizing in subspace. The advantages and disadvantages of the approaches were analyzed. It is concluded that all the existing 2D inversion algorithms have limitations such that  further development are needed.

Key words: nuclear magnetic resonance, 2D inversion, diffusion, relaxation

CLC Number: