Chinese Journal of Magnetic Resonance

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Detection of GABA in Human Brain on Clinical 3 T MRI Scanner

CHEN Lu-guang,LI Jian-qi*,WANG Qian-feng   

  1. Shanghai Key Laboratory of Magnetic Resonance Imaging, Department of Physics, East China Normal University, Shanghai 200062, China
  • Received:2012-10-22 Revised:2012-11-28 Online:2013-09-05 Published:2013-09-05
  • About author:*Corresponding author: Li Jian-qi, Tel: 021-62223871, E-mail: jqli@phy.ecnu.edu.cn.
  • Supported by:

    上海市科委基础研究重点资助项目(10JC1414600),国家自然科学基金资助项目(81271533).

Abstract:

GABA (γ-aminobutyric acid) is a major inhibitory neurotransmitter in the central nervous system of human brain, and plays a predominant role in the regulation of neuronal activity. Detection of GABA by in vivo magnetic resonance spectroscopy is hindered by its inherent low concentration and overlapping with resonances from other metabolites. GABA cannot be directly detected with the PRESS (point resolved echo spectroscopy) or STEAM (stimulated echo acquisition mode) pulse sequences on the clinical MRI scanners. This paper reported the implementation of a single-voxel spectroscopy J-difference editing sequence (MEGA-PRESS) for detection of GABA. The results from phantom studies and human brain indicated that it is feasible to use MEGAPRESS for detection of GABA on 3 T clinical MRI scanners.

Key words: GABA,  J-difference, spectral editing, MEGA-PRESS

CLC Number: