Experimental set-up to compare measurements and numerical simulations in Magnetic Resonance Imaging RF dosimetry

Abstract

Many of the parameters associated with the Magnetic Resonance Imaging (MRI) antennas are estimated by means of numerical simulations. Taking into account the unavoidable numerical approximations and imperfections of the models, an experimental validation of the theoretical results becomes essential. This work describes three measuring set-ups which allow the comparison between measurements of electromagnetic fields and the same quantities computed numerically. The experimental activity highlighted some critical aspects of the numerical results that could bring to a wrong estimation of the parameters associated with the MRI antennas. Results suggest the importance and feasibility of a dosimetry experimental set-up suitable for MRI antennas characterization.