An ideal dielectric coat to avoid prosthesis RF-artefacts in Magnetic Resonance Imaging

Abstract The number of people submitted to total hip or knee arthroplasty increased in the last years and it is likely to grow further. Hence, the importance of a proper investigation tool that allows to determine and recognize the potential presence of perioperative and/or postoperative diseases be...

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Autores principales:	U. Zanovello, L. Matekovits, L. Zilberti
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/45c62b041dd74287b7c48a40db272cde
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spelling	oai:doaj.org-article:45c62b041dd74287b7c48a40db272cde2021-12-02T11:40:15ZAn ideal dielectric coat to avoid prosthesis RF-artefacts in Magnetic Resonance Imaging10.1038/s41598-017-00215-72045-2322https://doaj.org/article/45c62b041dd74287b7c48a40db272cde2017-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00215-7https://doaj.org/toc/2045-2322Abstract The number of people submitted to total hip or knee arthroplasty increased in the last years and it is likely to grow further. Hence, the importance of a proper investigation tool that allows to determine and recognize the potential presence of perioperative and/or postoperative diseases becomes clear. Although the Magnetic Resonance Imaging (MRI) technique demonstrated several advantages over the other common tomography tools, it suffers from the arise of image artefacts if it is performed in presence of metallic prostheses. In particular, the so-called RF-artefacts are caused by the inhomogeneity in the radiofrequency magnetic field of MRI, due to the electric currents induced on the metal surface by the field itself. In this work, a near-zero permittivity dielectric coat is simulated to reduce those currents and, therefore, the RF-artefacts onset in the final image. Numerical results confirm that the dielectric coat strongly reduces the magnetic field inhomogeneity, suggesting a possible solution to a well-known problem in the MRI field.U. ZanovelloL. MatekovitsL. ZilbertiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-12 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q U. Zanovello L. Matekovits L. Zilberti An ideal dielectric coat to avoid prosthesis RF-artefacts in Magnetic Resonance Imaging
description	Abstract The number of people submitted to total hip or knee arthroplasty increased in the last years and it is likely to grow further. Hence, the importance of a proper investigation tool that allows to determine and recognize the potential presence of perioperative and/or postoperative diseases becomes clear. Although the Magnetic Resonance Imaging (MRI) technique demonstrated several advantages over the other common tomography tools, it suffers from the arise of image artefacts if it is performed in presence of metallic prostheses. In particular, the so-called RF-artefacts are caused by the inhomogeneity in the radiofrequency magnetic field of MRI, due to the electric currents induced on the metal surface by the field itself. In this work, a near-zero permittivity dielectric coat is simulated to reduce those currents and, therefore, the RF-artefacts onset in the final image. Numerical results confirm that the dielectric coat strongly reduces the magnetic field inhomogeneity, suggesting a possible solution to a well-known problem in the MRI field.
format	article
author	U. Zanovello L. Matekovits L. Zilberti
author_facet	U. Zanovello L. Matekovits L. Zilberti
author_sort	U. Zanovello
title	An ideal dielectric coat to avoid prosthesis RF-artefacts in Magnetic Resonance Imaging
title_short	An ideal dielectric coat to avoid prosthesis RF-artefacts in Magnetic Resonance Imaging
title_full	An ideal dielectric coat to avoid prosthesis RF-artefacts in Magnetic Resonance Imaging
title_fullStr	An ideal dielectric coat to avoid prosthesis RF-artefacts in Magnetic Resonance Imaging
title_full_unstemmed	An ideal dielectric coat to avoid prosthesis RF-artefacts in Magnetic Resonance Imaging
title_sort	ideal dielectric coat to avoid prosthesis rf-artefacts in magnetic resonance imaging
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/45c62b041dd74287b7c48a40db272cde
work_keys_str_mv	AT uzanovello anidealdielectriccoattoavoidprosthesisrfartefactsinmagneticresonanceimaging AT lmatekovits anidealdielectriccoattoavoidprosthesisrfartefactsinmagneticresonanceimaging AT lzilberti anidealdielectriccoattoavoidprosthesisrfartefactsinmagneticresonanceimaging AT uzanovello idealdielectriccoattoavoidprosthesisrfartefactsinmagneticresonanceimaging AT lmatekovits idealdielectriccoattoavoidprosthesisrfartefactsinmagneticresonanceimaging AT lzilberti idealdielectriccoattoavoidprosthesisrfartefactsinmagneticresonanceimaging
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An ideal dielectric coat to avoid prosthesis RF-artefacts in Magnetic Resonance Imaging

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