Intermolecular double-quantum coherence imaging without coherence selection gradients and its application in in vivo MRI

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	Intermolecular double-quantum coherence imaging without coherence selection gradients and its application in in vivo MRI
	Shen, Guiping ; Cai, Congbo ; Chen, Zhong ; Cai, Shuhui ; Shen GP(沈桂平) ; Cai CB(蔡聪波) ; Chen Z(陈忠) ; Cai SH(蔡淑惠)
刊名	http://dx.doi.org/10.1016/j.mri.2012.10.015
	2013
关键词	NUCLEAR-MAGNETIC-RESONANCE DISTANT DIPOLAR FIELD INHOMOGENEOUS FIELDS SIGNAL ENHANCEMENT TRABECULAR BONE SOLUTION NMR SPECTROSCOPY ANISOTROPY SEQUENCE LIQUIDS
英文摘要	NNSF of China [11074209, 81171331]; In the COSY Revamped with Asymmetric Z-gradient Echo Detection (CRAZED) experiments, magnetization is modulated by the distant dipolar field (DDF) generated by coherence selection gradient (CSG) commonly in sinusoidal wave-form and results in detectable intermolecular multiple-quantum coherence (iMQC) signal. IMQCs have some attractive features, but their intrinsic weak signal intensity prevents their widespread applications. In this paper, a new phase cycling scheme was applied to obtain intermolecular double-quantum coherence (iDQC) signal. It is found that DDF can arise from nonspherical sample geometry or background inhomogeneous field in the absence of CSGs, which is more efficient than that created from CSGs. The experimental results show that the resulting DDF can refocus the +/- iDQC signals simultaneously and thus enhance the signal intensity to about two folds of that from the conventional CRAZED sequence. Theoretical prediction and experiments give coincident results. (C) 2013 Elsevier Inc. All rights reserved.
语种	英语
出版者	ELSEVIER SCIENCE INC
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/91911]
专题	物理技术－已发表论文
推荐引用方式 GB/T 7714	Shen, Guiping,Cai, Congbo,Chen, Zhong,et al. Intermolecular double-quantum coherence imaging without coherence selection gradients and its application in in vivo MRI[J]. http://dx.doi.org/10.1016/j.mri.2012.10.015,2013.
APA	Shen, Guiping.,Cai, Congbo.,Chen, Zhong.,Cai, Shuhui.,沈桂平.,...&蔡淑惠.(2013).Intermolecular double-quantum coherence imaging without coherence selection gradients and its application in in vivo MRI.http://dx.doi.org/10.1016/j.mri.2012.10.015.
MLA	Shen, Guiping,et al."Intermolecular double-quantum coherence imaging without coherence selection gradients and its application in in vivo MRI".http://dx.doi.org/10.1016/j.mri.2012.10.015 (2013).