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Solutions of two paramagnetic ions for use in nuclear magnetic resonance phantoms
Author(s) -
Schneiders Nicholas J.
Publication year - 1988
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.596155
Subject(s) - paramagnetism , ion , nuclear magnetic resonance , relaxation (psychology) , range (aeronautics) , materials science , magnetic resonance imaging , chemistry , physics , condensed matter physics , medicine , organic chemistry , composite material , radiology
The introduction of paramagnetic ions to affect relaxation times has been used in a variety of nuclear magnetic resonance (NMR) applications. All such relaxants used in NMR phantoms to date have consisted of a single paramagnetic ion. The disadvantage of this is that only one relaxation time can be adjusted as desired, either T 1 or T 2 . This study demonstrates that, by properly choosing two paramagnetic ions, it is possible to adjust both T 1 and T 2 independently over a wide range of values. Specifically, solutions of MnCl 2 and NiCl 2 were prepared that simultaneously matched target T 1 and T 2 values to within approximately 6%.