期刊
JOURNAL OF MAGNETIC RESONANCE
卷 286, 期 -, 页码 115-137出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jmr.2017.10.011
关键词
Magnetic resonance; Optimal control; Cooperative pulses; Hahn echo
资金
- New Frontiers in Sensitivity for EPR Spectroscopy: From Biological Cells to Nano Materials [SPP 1601, GL 203/7-2]
The Hahn echo sequence is one of the most common building blocks in magnetic resonance, consisting of an excitation pulse and a refocusing pulse. Conventional approaches to improve the performance of echo experiments focused on the optimization of individual pulses, compensating their own imperfections. Here we present an approach to concurrently design both pulses such that they also compensate each others imperfections. The fact that for such cooperative pulses the individual pulses do not need to be perfect provides additional degrees of freedom, resulting in improved overall Hahn echo performance. Single-scan cooperative pulses are compared to conventional approaches by simulations as well as experiments. (C) 2017 Elsevier Inc. All rights reserved.
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