Interleaving Gradient Magnetic Field Method for Diffusion Weighted Spectroscopy

GAO Song; ZU Zhong-Liang; BAO Shang-Lian

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Interleaving Gradient Magnetic Field Method for Diffusion Weighted Spectroscopy

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Diffusion-weighted magnetic resonance spectroscopy(DWS)has considerable potential in clinical and research applications.However.it is seldom implemented in conventional magnetic resonance imaging(MRI)scanners due to the strict hardware requirements.We propose an interleaving gradient magnetic field(IGMF)method based on point resolved spectroscopy(PRESS).Four interlaced powerful diffusion sensitive gradient magnetic fields are positioned around the two πrefocusing rf pulses in the PRESS sequence.This method utilizes the interval time in the PRESS pulse sequence,doubles the duration time of the diffusion sensitive gradient magnetic field and decreases the detrimental effect of the induced eddy current.The results of theoretical analysis and experimental observation demonstrate that the IGMF method is suitable for conventional MRI scanners.

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《中国物理快报：英文版》 |2008年第1期|325-328|共4页
作者
GAO Song; ZU Zhong-Liang; BAO Shang-Lian;
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Department of Medical Physics,Health Science Center,Peking University,Beijing 100083;

Beijing City Key Lab of Medical Physics and Engineering,School of Physics,Peking University,Beijing 100871;

Beijing City Key Lab of Medical Physics and Engineering,School of Physics,Peking University,Beijing 100871;

Beijing City Key Lab of Medical Physics and Engineering,School of Physics,Peking University,Beijing 100871;

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正文语种 chi
中图分类物理学;
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Interleaving Gradient Magnetic Field Method for Diffusion Weighted Spectroscopy

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