Maria-Argyro Karageorgou received her BSc in Physics (2009) from the University of Patras and her MSc in Biomedical Engineering (2012) from the University of Patras and the National Technical University of Athens. She is currently pursuing her doctorate at the Radiochemical Studies Laboratory of the Institute of Nuclear and Radiological Sciences and Technology, Energy and Safety of NCSR “Demokritos”. As part of her PhD thesis entitled “Radiolabeled magnetic nanoparticles for dual-modality disease imaging”, she investigates the development of magnetic nanoparticles radiolabeled with positron-emitting and/or photon-emitting radionuclides, for potential application as dual-modality contrast agents in molecular imaging of different diseases. Dual-modality contrast agents, such as radiolabeled magnetic nanoparticles, are promising candidates for a number of imaging applications, since they combine the advantages of two different imaging modalities, namely single photon emission computed tomography (SPECT) or positron emission tomography (PET) with magnetic resonance imaging (MRI). The benefit of such a combination relates to the interpretation of the obtained imaging information in a more accurate way so that underlying diseases are reliably diagnosed at early stages. For the above scope, she utilizes X-ray diffraction, dynamic light scattering, optical and atomic force microscopy for the physico-chemical characterization of the dual-modality contrast agents and she performs in vitro and in vivo experiments on donated human blood and animal models, respectively, with the aim to assess both biocompatibility and biodistribution issues of these agents. Her PhD thesis will be defended at the Department of Physics of the National and Kapodistrian University of Athens.