An Unmatched Radio Frequency Chain for Low-Field Magnetic Resonance Imaging

Autores
Harper, Joshua R.; Zárate Evers, Cristhian Manuel; Krauch, Federico; Muhumuza, Ivan; Molina, Jorge; Obungoloch, Johnes; Schiff, Steven J.
Año de publicación
2022
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Magnetic Resonance Imaging (MRI) is a safe and versatile diagnostic tool for intracranial imaging, however it is also one of the most expensive and specialized making it scarce in low- to middle-income countries (LMIC). The affordability and portability of low-field MRI offers the potential for increased access to brain imaging for diseases like Hydrocephalus in LMIC. In this tutorial style work, we show the design of a low powered and low cost radio frequency chain of electronics to be paired with a previously reported prepolarized low-field MRI for childhood hydrocephalus imaging in sub-Saharan Africa where the incidence of this condition is high. Since the Larmor frequency for this system is as low as 180 kHz, we are able to minimize the impedance of the transmit coil to 5 ohms rather than match to 50 ohms as is traditionally the case. This reduces transmit power consumption by a factor of 10. We also show the use of inexpensive and commonly available animal enclosure fencing (“chicken wire”) as a shield material at this frequency and compare to more traditional shield designs. These preliminary results show that highly portable and affordable low-field MRI systems could provide image resolution and signal-to-noise sufficient for planning hydrocephalus treatment in areas of the world with substantial resource limitations. Employment of these technologies in sub-Saharan Africa offers a cost-effective, sustainable approach to neurological diagnosis and treatment planning in this disease burdened region.
Fil: Harper, Joshua R.. Pennsylvania State University; Estados Unidos
Fil: Zárate Evers, Cristhian Manuel. Universidad Nacional de Asunción; Paraguay. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Krauch, Federico. Universidad Nacional de Asunción; Paraguay
Fil: Muhumuza, Ivan. Mbarara University Of Science And Technology; Uganda
Fil: Molina, Jorge. Universidad Nacional de Asunción; Paraguay
Fil: Obungoloch, Johnes. Mbarara University Of Science And Technology; Uganda
Fil: Schiff, Steven J.. Pennsylvania State University; Estados Unidos
Materia
LOW COST
LOW FIELD MRI
LOW POWER
LOW- TO MIDDLE-INCOME COUNTRIES
PORTABLE
PREPOLARIZATION MRI
RADIOFREQUENCY
SUSTAINABLE MRI
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/196046

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network_name_str CONICET Digital (CONICET)
spelling An Unmatched Radio Frequency Chain for Low-Field Magnetic Resonance ImagingHarper, Joshua R.Zárate Evers, Cristhian ManuelKrauch, FedericoMuhumuza, IvanMolina, JorgeObungoloch, JohnesSchiff, Steven J.LOW COSTLOW FIELD MRILOW POWERLOW- TO MIDDLE-INCOME COUNTRIESPORTABLEPREPOLARIZATION MRIRADIOFREQUENCYSUSTAINABLE MRIhttps://purl.org/becyt/ford/2.6https://purl.org/becyt/ford/2Magnetic Resonance Imaging (MRI) is a safe and versatile diagnostic tool for intracranial imaging, however it is also one of the most expensive and specialized making it scarce in low- to middle-income countries (LMIC). The affordability and portability of low-field MRI offers the potential for increased access to brain imaging for diseases like Hydrocephalus in LMIC. In this tutorial style work, we show the design of a low powered and low cost radio frequency chain of electronics to be paired with a previously reported prepolarized low-field MRI for childhood hydrocephalus imaging in sub-Saharan Africa where the incidence of this condition is high. Since the Larmor frequency for this system is as low as 180 kHz, we are able to minimize the impedance of the transmit coil to 5 ohms rather than match to 50 ohms as is traditionally the case. This reduces transmit power consumption by a factor of 10. We also show the use of inexpensive and commonly available animal enclosure fencing (“chicken wire”) as a shield material at this frequency and compare to more traditional shield designs. These preliminary results show that highly portable and affordable low-field MRI systems could provide image resolution and signal-to-noise sufficient for planning hydrocephalus treatment in areas of the world with substantial resource limitations. Employment of these technologies in sub-Saharan Africa offers a cost-effective, sustainable approach to neurological diagnosis and treatment planning in this disease burdened region.Fil: Harper, Joshua R.. Pennsylvania State University; Estados UnidosFil: Zárate Evers, Cristhian Manuel. Universidad Nacional de Asunción; Paraguay. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Krauch, Federico. Universidad Nacional de Asunción; ParaguayFil: Muhumuza, Ivan. Mbarara University Of Science And Technology; UgandaFil: Molina, Jorge. Universidad Nacional de Asunción; ParaguayFil: Obungoloch, Johnes. Mbarara University Of Science And Technology; UgandaFil: Schiff, Steven J.. Pennsylvania State University; Estados UnidosFrontiers Media2022-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/196046Harper, Joshua R.; Zárate Evers, Cristhian Manuel; Krauch, Federico; Muhumuza, Ivan; Molina, Jorge; et al.; An Unmatched Radio Frequency Chain for Low-Field Magnetic Resonance Imaging; Frontiers Media; Frontiers in Physics; 9; 2-2022; 1-132296-424XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.3389/fphy.2021.727536info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:42:59Zoai:ri.conicet.gov.ar:11336/196046instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:43:00.169CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv An Unmatched Radio Frequency Chain for Low-Field Magnetic Resonance Imaging
title An Unmatched Radio Frequency Chain for Low-Field Magnetic Resonance Imaging
spellingShingle An Unmatched Radio Frequency Chain for Low-Field Magnetic Resonance Imaging
Harper, Joshua R.
LOW COST
LOW FIELD MRI
LOW POWER
LOW- TO MIDDLE-INCOME COUNTRIES
PORTABLE
PREPOLARIZATION MRI
RADIOFREQUENCY
SUSTAINABLE MRI
title_short An Unmatched Radio Frequency Chain for Low-Field Magnetic Resonance Imaging
title_full An Unmatched Radio Frequency Chain for Low-Field Magnetic Resonance Imaging
title_fullStr An Unmatched Radio Frequency Chain for Low-Field Magnetic Resonance Imaging
title_full_unstemmed An Unmatched Radio Frequency Chain for Low-Field Magnetic Resonance Imaging
title_sort An Unmatched Radio Frequency Chain for Low-Field Magnetic Resonance Imaging
dc.creator.none.fl_str_mv Harper, Joshua R.
Zárate Evers, Cristhian Manuel
Krauch, Federico
Muhumuza, Ivan
Molina, Jorge
Obungoloch, Johnes
Schiff, Steven J.
author Harper, Joshua R.
author_facet Harper, Joshua R.
Zárate Evers, Cristhian Manuel
Krauch, Federico
Muhumuza, Ivan
Molina, Jorge
Obungoloch, Johnes
Schiff, Steven J.
author_role author
author2 Zárate Evers, Cristhian Manuel
Krauch, Federico
Muhumuza, Ivan
Molina, Jorge
Obungoloch, Johnes
Schiff, Steven J.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv LOW COST
LOW FIELD MRI
LOW POWER
LOW- TO MIDDLE-INCOME COUNTRIES
PORTABLE
PREPOLARIZATION MRI
RADIOFREQUENCY
SUSTAINABLE MRI
topic LOW COST
LOW FIELD MRI
LOW POWER
LOW- TO MIDDLE-INCOME COUNTRIES
PORTABLE
PREPOLARIZATION MRI
RADIOFREQUENCY
SUSTAINABLE MRI
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.6
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Magnetic Resonance Imaging (MRI) is a safe and versatile diagnostic tool for intracranial imaging, however it is also one of the most expensive and specialized making it scarce in low- to middle-income countries (LMIC). The affordability and portability of low-field MRI offers the potential for increased access to brain imaging for diseases like Hydrocephalus in LMIC. In this tutorial style work, we show the design of a low powered and low cost radio frequency chain of electronics to be paired with a previously reported prepolarized low-field MRI for childhood hydrocephalus imaging in sub-Saharan Africa where the incidence of this condition is high. Since the Larmor frequency for this system is as low as 180 kHz, we are able to minimize the impedance of the transmit coil to 5 ohms rather than match to 50 ohms as is traditionally the case. This reduces transmit power consumption by a factor of 10. We also show the use of inexpensive and commonly available animal enclosure fencing (“chicken wire”) as a shield material at this frequency and compare to more traditional shield designs. These preliminary results show that highly portable and affordable low-field MRI systems could provide image resolution and signal-to-noise sufficient for planning hydrocephalus treatment in areas of the world with substantial resource limitations. Employment of these technologies in sub-Saharan Africa offers a cost-effective, sustainable approach to neurological diagnosis and treatment planning in this disease burdened region.
Fil: Harper, Joshua R.. Pennsylvania State University; Estados Unidos
Fil: Zárate Evers, Cristhian Manuel. Universidad Nacional de Asunción; Paraguay. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Krauch, Federico. Universidad Nacional de Asunción; Paraguay
Fil: Muhumuza, Ivan. Mbarara University Of Science And Technology; Uganda
Fil: Molina, Jorge. Universidad Nacional de Asunción; Paraguay
Fil: Obungoloch, Johnes. Mbarara University Of Science And Technology; Uganda
Fil: Schiff, Steven J.. Pennsylvania State University; Estados Unidos
description Magnetic Resonance Imaging (MRI) is a safe and versatile diagnostic tool for intracranial imaging, however it is also one of the most expensive and specialized making it scarce in low- to middle-income countries (LMIC). The affordability and portability of low-field MRI offers the potential for increased access to brain imaging for diseases like Hydrocephalus in LMIC. In this tutorial style work, we show the design of a low powered and low cost radio frequency chain of electronics to be paired with a previously reported prepolarized low-field MRI for childhood hydrocephalus imaging in sub-Saharan Africa where the incidence of this condition is high. Since the Larmor frequency for this system is as low as 180 kHz, we are able to minimize the impedance of the transmit coil to 5 ohms rather than match to 50 ohms as is traditionally the case. This reduces transmit power consumption by a factor of 10. We also show the use of inexpensive and commonly available animal enclosure fencing (“chicken wire”) as a shield material at this frequency and compare to more traditional shield designs. These preliminary results show that highly portable and affordable low-field MRI systems could provide image resolution and signal-to-noise sufficient for planning hydrocephalus treatment in areas of the world with substantial resource limitations. Employment of these technologies in sub-Saharan Africa offers a cost-effective, sustainable approach to neurological diagnosis and treatment planning in this disease burdened region.
publishDate 2022
dc.date.none.fl_str_mv 2022-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/196046
Harper, Joshua R.; Zárate Evers, Cristhian Manuel; Krauch, Federico; Muhumuza, Ivan; Molina, Jorge; et al.; An Unmatched Radio Frequency Chain for Low-Field Magnetic Resonance Imaging; Frontiers Media; Frontiers in Physics; 9; 2-2022; 1-13
2296-424X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/196046
identifier_str_mv Harper, Joshua R.; Zárate Evers, Cristhian Manuel; Krauch, Federico; Muhumuza, Ivan; Molina, Jorge; et al.; An Unmatched Radio Frequency Chain for Low-Field Magnetic Resonance Imaging; Frontiers Media; Frontiers in Physics; 9; 2-2022; 1-13
2296-424X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.3389/fphy.2021.727536
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Frontiers Media
publisher.none.fl_str_mv Frontiers Media
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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