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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...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2021
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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. |
format | Online Article Text |
id | pubmed-8307256 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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