Tehran University of Medical Sciences Frontiers in Biomedical Technologies 2345-5837 8 2 2021 06 23 143 150 EN Farzaneh Ghorbani Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran Somayyeh Seyedi Medical Physics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran Alireza Montazerabadi Medical Physics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran 2020 10 10 2020 11 01 Magnetic particle imaging was introduced in 2005 as a new tomographic medical imaging modality and is still under development. Magnetic particle imaging determines the spatial distribution of magnetic nanoparticles by their interaction with an external excitation magnetic field. Therefore, there is no ionizing radiation dose in this trace-based modality. Magnetic nanoparticle imaging provides characteristics, including high spatial and temporal resolution, high sensitivity, expected from an ideal imaging method, and it is also an inherently quantitative method. In this paper, the properties of magnetic fields and nanoparticles used in Magnetic particle imaging, as well as its applications are discussed. https://fbt.tums.ac.ir/index.php/fbt/article/view/284