Very Low Field 19F MRI of Perfluoro-Octylbromide: Minimizing Chemical Shift Effects and Signal Loss Due to Scalar Coupling
Journal of magnetic resonance(2021)
摘要
19F images have been obtained from perflurooctylbromide (PFOB) at very low magnetic field (50 mT). The small spectral dispersion (in Hz) means that all fluorine nuclei contribute to the signal without chemical shift artifacts or the need for specialized imaging sequences. Turbo spin echo trains with short interpulse intervals and full 180° refocussing pulses suppress scalar coupling, leading to long apparent T2 values and highly efficient data collection. Overall, the detection efficiency of PFOB is very similar that of water in tissue.
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关键词
Low field,Fluorine MRI,Turbo-spin echo,Scalar coupling
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