A systematic multi-field measurement of relaxation times, relaxivities, and permittivities for nine hydrogel/electrolyte materials and three oils used in MRI phantoms, with practical candidate recommendations.
We observed T2 decreasing with increasing field strength in PEG, PVA, sodium polyacrylate, and Mn(NO3)2
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T1, T2, and complex permittivities of hydrogels, paramagnetic salt solutions, and oils at 0.35, 1.5, and 3 Tesla
A systematic multi-field measurement of relaxation times, relaxivities, and permittivities for nine hydrogel/electrolyte materials and three oils used in MRI phantoms, with practical candidate recommendations.