Improving magnetic resonance imaging with smart and thin metasurfaces

Abstract Over almost five decades of development and improvement, Magnetic Resonance Imaging (MRI) has become a rich and powerful, non-invasive technique in medical imaging, yet not reaching its physical limits. Technical and physiological restrictions constrain physically feasible developments. A c...

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Autores principales:	Endri Stoja, Simon Konstandin, Dennis Philipp, Robin N. Wilke, Diego Betancourt, Thomas Bertuch, Jürgen Jenne, Reiner Umathum, Matthias Günther
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3f72667ba3304075b78c1707631c9bcd
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spelling	oai:doaj.org-article:3f72667ba3304075b78c1707631c9bcd2021-12-02T18:50:57ZImproving magnetic resonance imaging with smart and thin metasurfaces10.1038/s41598-021-95420-w2045-2322https://doaj.org/article/3f72667ba3304075b78c1707631c9bcd2021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-95420-whttps://doaj.org/toc/2045-2322Abstract Over almost five decades of development and improvement, Magnetic Resonance Imaging (MRI) has become a rich and powerful, non-invasive technique in medical imaging, yet not reaching its physical limits. Technical and physiological restrictions constrain physically feasible developments. A common solution to improve imaging speed and resolution is to use higher field strengths, which also has subtle and potentially harmful implications. However, patient safety is to be considered utterly important at all stages of research and clinical routine. Here we show that dynamic metamaterials are a promising solution to expand the potential of MRI and to overcome some limitations. A thin, smart, non-linear metamaterial is presented that enhances the imaging performance and increases the signal-to-noise ratio in 3T MRI significantly (up to eightfold), whilst the transmit field is not affected due to self-detuning and, thus, patient safety is also assured. This self-detuning works without introducing any additional overhead related to MRI-compatible electronic control components or active (de-)tuning mechanisms. The design paradigm, simulation results, on-bench characterization, and MRI experiments using homogeneous and structural phantoms are described. The suggested single-layer metasurface paves the way for conformal and patient-specific manufacturing, which was not possible before due to typically bulky and rigid metamaterial structures.Endri StojaSimon KonstandinDennis PhilippRobin N. WilkeDiego BetancourtThomas BertuchJürgen JenneReiner UmathumMatthias GüntherNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Endri Stoja Simon Konstandin Dennis Philipp Robin N. Wilke Diego Betancourt Thomas Bertuch Jürgen Jenne Reiner Umathum Matthias Günther Improving magnetic resonance imaging with smart and thin metasurfaces
description	Abstract Over almost five decades of development and improvement, Magnetic Resonance Imaging (MRI) has become a rich and powerful, non-invasive technique in medical imaging, yet not reaching its physical limits. Technical and physiological restrictions constrain physically feasible developments. A common solution to improve imaging speed and resolution is to use higher field strengths, which also has subtle and potentially harmful implications. However, patient safety is to be considered utterly important at all stages of research and clinical routine. Here we show that dynamic metamaterials are a promising solution to expand the potential of MRI and to overcome some limitations. A thin, smart, non-linear metamaterial is presented that enhances the imaging performance and increases the signal-to-noise ratio in 3T MRI significantly (up to eightfold), whilst the transmit field is not affected due to self-detuning and, thus, patient safety is also assured. This self-detuning works without introducing any additional overhead related to MRI-compatible electronic control components or active (de-)tuning mechanisms. The design paradigm, simulation results, on-bench characterization, and MRI experiments using homogeneous and structural phantoms are described. The suggested single-layer metasurface paves the way for conformal and patient-specific manufacturing, which was not possible before due to typically bulky and rigid metamaterial structures.
format	article
author	Endri Stoja Simon Konstandin Dennis Philipp Robin N. Wilke Diego Betancourt Thomas Bertuch Jürgen Jenne Reiner Umathum Matthias Günther
author_facet	Endri Stoja Simon Konstandin Dennis Philipp Robin N. Wilke Diego Betancourt Thomas Bertuch Jürgen Jenne Reiner Umathum Matthias Günther
author_sort	Endri Stoja
title	Improving magnetic resonance imaging with smart and thin metasurfaces
title_short	Improving magnetic resonance imaging with smart and thin metasurfaces
title_full	Improving magnetic resonance imaging with smart and thin metasurfaces
title_fullStr	Improving magnetic resonance imaging with smart and thin metasurfaces
title_full_unstemmed	Improving magnetic resonance imaging with smart and thin metasurfaces
title_sort	improving magnetic resonance imaging with smart and thin metasurfaces
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/3f72667ba3304075b78c1707631c9bcd
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Improving magnetic resonance imaging with smart and thin metasurfaces

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