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RT Journal Article
SR Electronic
T1 MR imaging in acute multiple sclerosis: ringlike appearance in plaques suggesting the presence of paramagnetic free radicals.
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 1544
OP 1546
VO 13
IS 6
A1 Powell, T
A1 Sussman, J G
A1 Davies-Jones, G A
YR 1992
UL http://www.ajnr.org/content/13/6/1544.abstract
AB MR studies in three patients with multiple sclerosis have shown clearly defined rings within plaques of demyelination, having signal characteristics consistent with the presence of paramagnetic material. It is suggested that these appearances represent the presence of free radicals in the macrophage layer forming the margin of an acute plaque.