Three-Dimensional Magnetic Induction Tomography: Practical Implementation for Imaging throughout the Depth of a Low Conductive and Voluminous Body

Magnetic induction tomography (MIT) is a contactless, low-energy method used to visualize the conductivity distribution inside a body under examination. A particularly demanding task is the three-dimensional (3D) imaging of voluminous bodies in the biomedical impedance regime. While successful MIT s...

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Autores principales:	Martin Klein, Daniel Erni, Dirk Rueter
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	magnetic induction tomography electromagnetic tomography three-dimensional imaging biomedical imaging 3D reconstruction Chemical technology TP1-1185
Acceso en línea:	https://doaj.org/article/3726fb1164144ef681515f5a3331b30a
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spelling	oai:doaj.org-article:3726fb1164144ef681515f5a3331b30a2021-11-25T18:58:49ZThree-Dimensional Magnetic Induction Tomography: Practical Implementation for Imaging throughout the Depth of a Low Conductive and Voluminous Body10.3390/s212277251424-8220https://doaj.org/article/3726fb1164144ef681515f5a3331b30a2021-11-01T00:00:00Zhttps://www.mdpi.com/1424-8220/21/22/7725https://doaj.org/toc/1424-8220Magnetic induction tomography (MIT) is a contactless, low-energy method used to visualize the conductivity distribution inside a body under examination. A particularly demanding task is the three-dimensional (3D) imaging of voluminous bodies in the biomedical impedance regime. While successful MIT simulations have been reported for this regime, practical demonstration over the entire depth of weakly conductive bodies is technically difficult and has not yet been reported, particularly in terms of more realistic requirements. Poor sensitivity in the central regions critically affects the measurements. However, a recently simulated MIT scanner with a sinusoidal excitation field topology promises improved sensitivity (>20 dB) from the interior. On this basis, a large and fast 3D MIT scanner was practically realized in this study. Close agreement between theoretical forward calculations and experimental measurements underline the technical performance of the sensor system, and the previously only simulated progress is hereby confirmed. This allows 3D reconstructions from practical measurements to be presented over the entire depth of a voluminous body phantom with tissue-like conductivity and dimensions similar to a human torso. This feasibility demonstration takes MIT a step further toward the quick 3D mapping of a low conductive and voluminous object, for example, for rapid, harmless and contactless thorax or lung diagnostics.Martin KleinDaniel ErniDirk RueterMDPI AGarticlemagnetic induction tomographyelectromagnetic tomographythree-dimensional imagingbiomedical imaging3D reconstructionChemical technologyTP1-1185ENSensors, Vol 21, Iss 7725, p 7725 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	magnetic induction tomography electromagnetic tomography three-dimensional imaging biomedical imaging 3D reconstruction Chemical technology TP1-1185
spellingShingle	magnetic induction tomography electromagnetic tomography three-dimensional imaging biomedical imaging 3D reconstruction Chemical technology TP1-1185 Martin Klein Daniel Erni Dirk Rueter Three-Dimensional Magnetic Induction Tomography: Practical Implementation for Imaging throughout the Depth of a Low Conductive and Voluminous Body
description	Magnetic induction tomography (MIT) is a contactless, low-energy method used to visualize the conductivity distribution inside a body under examination. A particularly demanding task is the three-dimensional (3D) imaging of voluminous bodies in the biomedical impedance regime. While successful MIT simulations have been reported for this regime, practical demonstration over the entire depth of weakly conductive bodies is technically difficult and has not yet been reported, particularly in terms of more realistic requirements. Poor sensitivity in the central regions critically affects the measurements. However, a recently simulated MIT scanner with a sinusoidal excitation field topology promises improved sensitivity (>20 dB) from the interior. On this basis, a large and fast 3D MIT scanner was practically realized in this study. Close agreement between theoretical forward calculations and experimental measurements underline the technical performance of the sensor system, and the previously only simulated progress is hereby confirmed. This allows 3D reconstructions from practical measurements to be presented over the entire depth of a voluminous body phantom with tissue-like conductivity and dimensions similar to a human torso. This feasibility demonstration takes MIT a step further toward the quick 3D mapping of a low conductive and voluminous object, for example, for rapid, harmless and contactless thorax or lung diagnostics.
format	article
author	Martin Klein Daniel Erni Dirk Rueter
author_facet	Martin Klein Daniel Erni Dirk Rueter
author_sort	Martin Klein
title	Three-Dimensional Magnetic Induction Tomography: Practical Implementation for Imaging throughout the Depth of a Low Conductive and Voluminous Body
title_short	Three-Dimensional Magnetic Induction Tomography: Practical Implementation for Imaging throughout the Depth of a Low Conductive and Voluminous Body
title_full	Three-Dimensional Magnetic Induction Tomography: Practical Implementation for Imaging throughout the Depth of a Low Conductive and Voluminous Body
title_fullStr	Three-Dimensional Magnetic Induction Tomography: Practical Implementation for Imaging throughout the Depth of a Low Conductive and Voluminous Body
title_full_unstemmed	Three-Dimensional Magnetic Induction Tomography: Practical Implementation for Imaging throughout the Depth of a Low Conductive and Voluminous Body
title_sort	three-dimensional magnetic induction tomography: practical implementation for imaging throughout the depth of a low conductive and voluminous body
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/3726fb1164144ef681515f5a3331b30a
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Three-Dimensional Magnetic Induction Tomography: Practical Implementation for Imaging throughout the Depth of a Low Conductive and Voluminous Body

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