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Relaxation rates of paramagnetic solutions: Evaluation by nuclear magnetic resonance imaging
Author(s) -
Bucciolini M.,
Ciraolo L.,
Renzi R.
Publication year - 1986
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 - 10.1118/1.595917
Subject(s) - relaxation (psychology) , paramagnetism , nuclear magnetic resonance , spin–lattice relaxation , ion , magnetic resonance imaging , spin–spin relaxation , materials science , chemistry , physics , condensed matter physics , medicine , organic chemistry , radiology , psychology , social psychology
Methods for accurate calculation of nuclear magnetic resonance relaxation times are presented. Data from inversion recovery sequences with different delay times were fitted to derive T 1 information on water solutions of paramagnetic ions. T 2 values of the same samples were obtained by fitting signals from a multiecho sequence. According to the theory, for the field strength used (0.5 T), T 1 's and T 2 's are nearly equal and the enhancement of relaxation rates is found to be directly proportional to molar concentration. Tests performed suggest the opportunity of using the same approach in studies of tissues.