Abstract
Given the high technological complexity of magnetic resonance imaging (MRI) systems, there is particular concern for potential harm. Safety issues arise from the three main components of the MRI system: its main static magnetic field, which is always on in superconducting magnets, and the switched radiofrequency electromagnetic fields and gradient magnetic fields that are activated during imaging. This article reviews published literature mainly from 2015 with regard to these general safety considerations and their interaction with implanted medical devices. Furthermore, an update on regulatory issues will be provided along with an overview of miscellaneous other safety aspects that are related to an MRI exam but do not arise from the technology per se.
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