writer：Qin Miao, Peng Yueyou, Xu Mengjie, Yan Hui, Cheng Yizhu, Zhang Xiumei, Huang Di, Chen Weiyi, Meng Y
keywords：Fe3O4/Gd2O3-DHCA nanocubes, dual-mode imaging, Magnetic Resonance Imaging
source：期刊
specific source：Beilstein Journal of Nanotechnology
Issue time：2020年
Multimodal imaging technology were extensively studied over past few years, because they offered complementary diagnosis information, which can increase the accuracy of diagnosis. The synthesis of contrast agents via simplified methods are desired for the development of multimodal imaging. Herein, uniformly distributed Fe3O4/Gd2O3 nanocubes for T1-T2 dual-mode contrast agents were rationally designed and successfully fabricated by our group. In this system, the Fe3O4/Gd2O3 nanocubes were coated with nontoxic 3,4-dihydroxyhydrocinnamic acid (DHCA) for better hydrophilia and biocompatibility. The results show that Ferrum (Fe) and Gadolinium (Gd) elements are homo-dispersity in the Fe3O4/Gd2O3-DHCA (FGDA) nanocubes. Relaxivity study at 3.0 T scanner demonstrates that the r1 value and r2 value of FGDA nanocubes reach up to 67.57 ± 6.2 mM-1s-1 and 24.2 ± 1.46 mM-1s-1. The images of T1-weighted and T2-weighted imaging in vivo demonstrate that FGDA nanocubes possess the ability of magnetic resonance (MR) imaging enhancement as dual-mode contrast agent. The above illustrated experimental results indicate that FGDA nanocubes can be applied in clinical diagnosis in future.