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Experimental Validation of a Microwave System for Brain Stroke 3-D Imaging

This paper experimentally validates the capability of a microwave prototype device to localize hemorrhages and ischemias within the brain as well as proposes an innovative calibration technique based on the measured data. In the reported experiments, a 3-D human-like head phantom is considered, wher...

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Autores principales: Rodriguez-Duarte, David O., Tobon Vasquez, Jorge A., Scapaticci, Rosa, Turvani, Giovanna, Cavagnaro, Marta, Casu, Mario R., Crocco, Lorenzo, Vipiana, Francesca
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8307256/
https://www.ncbi.nlm.nih.gov/pubmed/34359315
http://dx.doi.org/10.3390/diagnostics11071232
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author Rodriguez-Duarte, David O.
Tobon Vasquez, Jorge A.
Scapaticci, Rosa
Turvani, Giovanna
Cavagnaro, Marta
Casu, Mario R.
Crocco, Lorenzo
Vipiana, Francesca
author_facet Rodriguez-Duarte, David O.
Tobon Vasquez, Jorge A.
Scapaticci, Rosa
Turvani, Giovanna
Cavagnaro, Marta
Casu, Mario R.
Crocco, Lorenzo
Vipiana, Francesca
author_sort Rodriguez-Duarte, David O.
collection PubMed
description This paper experimentally validates the capability of a microwave prototype device to localize hemorrhages and ischemias within the brain as well as proposes an innovative calibration technique based on the measured data. In the reported experiments, a 3-D human-like head phantom is considered, where the brain is represented either with a homogeneous liquid mimicking brain dielectric properties or with ex vivo calf brains. The microwave imaging (MWI) system works at 1 GHz, and it is realized with a low-complexity architecture formed by an array of twenty-four printed monopole antennas. Each antenna is embedded into the “brick” of a semi-flexible dielectric matching medium, and it is positioned conformal to the head upper part. The imaging algorithm exploits a differential approach and provides 3-D images of the brain region. It employs the singular value decomposition of the discretized scattering operator obtained via accurate numerical models. The MWI system analysis shows promising reconstruction results and extends the device validation.
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spelling pubmed-83072562021-07-25 Experimental Validation of a Microwave System for Brain Stroke 3-D Imaging Rodriguez-Duarte, David O. Tobon Vasquez, Jorge A. Scapaticci, Rosa Turvani, Giovanna Cavagnaro, Marta Casu, Mario R. Crocco, Lorenzo Vipiana, Francesca Diagnostics (Basel) Article This paper experimentally validates the capability of a microwave prototype device to localize hemorrhages and ischemias within the brain as well as proposes an innovative calibration technique based on the measured data. In the reported experiments, a 3-D human-like head phantom is considered, where the brain is represented either with a homogeneous liquid mimicking brain dielectric properties or with ex vivo calf brains. The microwave imaging (MWI) system works at 1 GHz, and it is realized with a low-complexity architecture formed by an array of twenty-four printed monopole antennas. Each antenna is embedded into the “brick” of a semi-flexible dielectric matching medium, and it is positioned conformal to the head upper part. The imaging algorithm exploits a differential approach and provides 3-D images of the brain region. It employs the singular value decomposition of the discretized scattering operator obtained via accurate numerical models. The MWI system analysis shows promising reconstruction results and extends the device validation. MDPI 2021-07-08 /pmc/articles/PMC8307256/ /pubmed/34359315 http://dx.doi.org/10.3390/diagnostics11071232 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Rodriguez-Duarte, David O.
Tobon Vasquez, Jorge A.
Scapaticci, Rosa
Turvani, Giovanna
Cavagnaro, Marta
Casu, Mario R.
Crocco, Lorenzo
Vipiana, Francesca
Experimental Validation of a Microwave System for Brain Stroke 3-D Imaging
title Experimental Validation of a Microwave System for Brain Stroke 3-D Imaging
title_full Experimental Validation of a Microwave System for Brain Stroke 3-D Imaging
title_fullStr Experimental Validation of a Microwave System for Brain Stroke 3-D Imaging
title_full_unstemmed Experimental Validation of a Microwave System for Brain Stroke 3-D Imaging
title_short Experimental Validation of a Microwave System for Brain Stroke 3-D Imaging
title_sort experimental validation of a microwave system for brain stroke 3-d imaging
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8307256/
https://www.ncbi.nlm.nih.gov/pubmed/34359315
http://dx.doi.org/10.3390/diagnostics11071232
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