Fig. 1From: Biodegradable and biocompatible exceedingly small magnetic iron oxide nanoparticles for T1-weighted magnetic resonance imaging of tumorsA–D T1 relaxation rate (1/T1) (A, C) or T2 relaxation rate (1/T2) (B, D) plotted versus CFe for ES-MION1-11. E, F The r1 or r2/r1 of the ES-MION1-4 (E) or ES-MION5-8 (F) as a function of CPASP or CNH3·H2O. The magnetic field is 3.0 TBack to article page