Comparison of two superparamagnetic viral-sized iron oxide particles ferumoxides and ferumoxtran-10 with a gadolinium chelate in imaging intracranial tumors. - Varallyay,P.; Nesbit,G.; Muldoon,LL.; Nixon,RR.; Delashaw,J.; Cohen,JI.; Petrillo,A.; Rink,D.; Neuwelt,EA. (AJNR Am J Neuroradiol, 2002)