期刊
JOURNAL OF MAGNETIC RESONANCE
卷 154, 期 2, 页码 192-195出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1006/jmre.2001.2480
关键词
optimal control theory; coherence transfer; isotropic mixing; sensitivity enhancement; TOCSY
Based on principles of geometric optimal control theory, coherence transfer building blocks can be derived which achieve optimal sensitivity. Here, experimental pulse sequences are presented that achieve the best possible coherence-order-selective in-phase transfer (S- --> I-) for a heteronuclear 2-spin system for any given mixing time in the absence of relaxation. For short mixing times, the optimal experiment improves the sensitivity of isotropic mixing by up to 12.5%. (C) 2002 Elsevier Science (USA).
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