Numerical Investigation of a self-detuning Signal Enhancement Metasurface for 3T MRI

In this work, numerical simulation results regarding an automatically self-detuning signal enhancement plate (DSEP) for use in magnetic resonance imaging at 3T field are presented. The DSEP is composed of a linear alignment of wire resonators milled on a suitable PCB and inductively coupled to a var...

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Bibliographic Details
Main Authors: Stoja, Endri, Philipp, Dennis, Betancourt, Diego, Konstandin, Simon, Wilke, Robin Niklas, Umathum, Reinhold, Jenne, Jurgen, Bertuch, Thomas, Gunther, Matthias
Format: Conference Proceeding
Language:English
Online Access:Request full text
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Summary:In this work, numerical simulation results regarding an automatically self-detuning signal enhancement plate (DSEP) for use in magnetic resonance imaging at 3T field are presented. The DSEP is composed of a linear alignment of wire resonators milled on a suitable PCB and inductively coupled to a varactor-loaded detuning loop. Eigenmode simulations allow to design the coupled system, whereas full-wave simulations of the device, excited by a circularly-polarized plane wave in the pres-ence of a phantom, show the detuning efficiency. In terms of H-field magnitude, a maximal enhancement factor of about four is observed at the target frequency of 123.5 MHz.
ISSN:2642-4339
DOI:10.23919/URSIGASS49373.2020.9232401