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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/196046
Ver los metadatos del registro completo
id |
CONICETDig_92dacc9590b204bea2685409dcc97585 |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/196046 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
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 |
_version_ |
1844614463971393536 |
score |
13.070432 |