RT Journal Article T1 Magnetic Nanoparticles as MRI Contrast Agents A1 Avasthi, Ashish A1 Caro, Carlos A1 Pozo-Torres, Esther A1 Pernia Leal, Manuel A1 García-Martín, María Luisa K1 Magnetic nanoparticles K1 Iron oxide nanoparticles K1 Magnetic resonance imaging K1 Cancer K1 Diagnosis K1 Nanopartículas magnéticas de óxido de hierro K1 Imagen por resonancia magnética K1 Neoplasias K1 Diagnóstico AB Iron oxide nanoparticles (IONPs) have emerged as a promising alternative to conventional contrast agents (CAs) for magnetic resonance imaging (MRI). They have been extensively investigated as CAs due to their high biocompatibility and excellent magnetic properties. Furthermore, the ease of functionalization of their surfaces with different types of ligands (antibodies, peptides, sugars, etc.) opens up the possibility of carrying out molecular MRI. Thus, IONPs functionalized with epithelial growth factor receptor antibodies, short peptides, like RGD, or aptamers, among others, have been proposed for the diagnosis of various types of cancer, including breast, stomach, colon, kidney, liver or brain cancer. In addition to cancer diagnosis, different types of IONPs have been developed for other applications, such as the detection of brain inflammation or the early diagnosis of thrombosis. This review addresses key aspects in the development of IONPs for MRI applications, namely, synthesis of the inorganic core, functionalization processes to make IONPs biocompatible and also to target them to specific tissues or cells, and finally in vivo studies in animal models, with special emphasis on tumor models. PB SpringerNature SN 2365-0869 YR 2020 FD 2020-05-07 LK http://hdl.handle.net/10668/3377 UL http://hdl.handle.net/10668/3377 LA en NO Avasthi A, Caro C, Pozo-Torres E, Leal MP, García-Martín ML. Magnetic Nanoparticles as MRI Contrast Agents. Top Curr Chem (Cham). 2020 May 7;378(3):40. Erratum in: Top Curr Chem (Cham). 2021 Jun 14;379(4):30. DS RISalud RD Apr 4, 2025