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MetaMaterials antenna for ultra-high field Mri

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Accueil › Scientific publications › A Parametric Study of Radiative Dipole BodyArray Coil for 7 Tesla MRI

A Parametric Study of Radiative Dipole BodyArray Coil for 7 Tesla MRI

mars 2, 2020

A Parametric Study of Radiative Dipole BodyArray Coil for 7 Tesla MRI , Anna A. Hurshkainen, Bart Steensma, Stanislav B. Glybovski, Ingmar J. Voogt, Irina V. Melchakova, Pavel A. Belov, Cornelis A.T. van den Berg and Alexander J.E. Raaijmakers, in Medical Physics, 18 Feb 2020

https://arxiv.org/pdf/1710.02399.pdf

Abstract
In this contribution we present numerical and experimental results of a parametric quantitative study of radiative dipole antennas in a phased array configuration for efficient body magnetic resonance imaging at 7T via parallel transmission. For magnetic resonance imaging (MRI) at ultrahigh fields (7T and higher) dipole antennas are commonly used in phased arrays, particularly for body imaging targets. This study reveals the effects of dipole positioning in the array (elevation of dipoles above the subject and inter-dipole spacing) on their mutual coupling, B1+ per Pacc and B1+ per maximum local SAR efficiencies as well as the RF-shimming capability. The numerical and experimental results are obtained and compared for a homogeneous phantom as well as for a real human models confirmed by in-vivo experiments.

Partners : Faculty of Physics and Engineering, ITMO University and University Medical Center Utrecht

 

mars 2, 2020

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This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 736937