Influence of partial k-space filling on the quality of magnetic resonance images

Detalhes bibliográficos
Autor(a) principal: Jornada,Tiago da Silva
Data de Publicação: 2016
Outros Autores: Murata,Camila Hitomi, Medeiros,Regina Bitelli
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Radiologia Brasileira (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-39842016000300006
Resumo: Abstract Objective: To study the influence that the scan percentage tool used in partial k-space acquisition has on the quality of images obtained with magnetic resonance imaging equipment. Materials and Methods: A Philips 1.5 T magnetic resonance imaging scanner was used in order to obtain phantom images for quality control tests and images of the knee of an adult male. Results: There were no significant variations in the uniformity and signal-to-noise ratios with the phantom images. However, analysis of the high-contrast spatial resolution revealed significant degradation when scan percentages of 70% and 85% were used in the acquisition of T1- and T2-weighted images, respectively. There was significant degradation when a scan percentage of 25% was used in T1- and T2-weighted in vivo images (p ≤ 0.01 for both). Conclusion: The use of tools that limit the k-space is not recommended without knowledge of their effect on image quality.
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spelling Influence of partial k-space filling on the quality of magnetic resonance imagesMagnetic resonance imagingK-spaceQuality controlIn vivo magnetic resonance imagingAbstract Objective: To study the influence that the scan percentage tool used in partial k-space acquisition has on the quality of images obtained with magnetic resonance imaging equipment. Materials and Methods: A Philips 1.5 T magnetic resonance imaging scanner was used in order to obtain phantom images for quality control tests and images of the knee of an adult male. Results: There were no significant variations in the uniformity and signal-to-noise ratios with the phantom images. However, analysis of the high-contrast spatial resolution revealed significant degradation when scan percentages of 70% and 85% were used in the acquisition of T1- and T2-weighted images, respectively. There was significant degradation when a scan percentage of 25% was used in T1- and T2-weighted in vivo images (p ≤ 0.01 for both). Conclusion: The use of tools that limit the k-space is not recommended without knowledge of their effect on image quality.Publicação do Colégio Brasileiro de Radiologia e Diagnóstico por Imagem2016-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-39842016000300006Radiologia Brasileira v.49 n.3 2016reponame:Radiologia Brasileira (Online)instname:Colégio Brasileiro de Radiologia e Diagnóstico por Imagem (CBR)instacron:CBR10.1590/0100-3984.2015.0028info:eu-repo/semantics/openAccessJornada,Tiago da SilvaMurata,Camila HitomiMedeiros,Regina Bitellieng2016-07-12T00:00:00Zoai:scielo:S0100-39842016000300006Revistahttps://www.scielo.br/j/rb/https://old.scielo.br/oai/scielo-oai.phpradiologiabrasileira@cbr.org.br1678-70990100-3984opendoar:2016-07-12T00:00Radiologia Brasileira (Online) - Colégio Brasileiro de Radiologia e Diagnóstico por Imagem (CBR)false
dc.title.none.fl_str_mv Influence of partial k-space filling on the quality of magnetic resonance images
title Influence of partial k-space filling on the quality of magnetic resonance images
spellingShingle Influence of partial k-space filling on the quality of magnetic resonance images
Jornada,Tiago da Silva
Magnetic resonance imaging
K-space
Quality control
In vivo magnetic resonance imaging
title_short Influence of partial k-space filling on the quality of magnetic resonance images
title_full Influence of partial k-space filling on the quality of magnetic resonance images
title_fullStr Influence of partial k-space filling on the quality of magnetic resonance images
title_full_unstemmed Influence of partial k-space filling on the quality of magnetic resonance images
title_sort Influence of partial k-space filling on the quality of magnetic resonance images
author Jornada,Tiago da Silva
author_facet Jornada,Tiago da Silva
Murata,Camila Hitomi
Medeiros,Regina Bitelli
author_role author
author2 Murata,Camila Hitomi
Medeiros,Regina Bitelli
author2_role author
author
dc.contributor.author.fl_str_mv Jornada,Tiago da Silva
Murata,Camila Hitomi
Medeiros,Regina Bitelli
dc.subject.por.fl_str_mv Magnetic resonance imaging
K-space
Quality control
In vivo magnetic resonance imaging
topic Magnetic resonance imaging
K-space
Quality control
In vivo magnetic resonance imaging
description Abstract Objective: To study the influence that the scan percentage tool used in partial k-space acquisition has on the quality of images obtained with magnetic resonance imaging equipment. Materials and Methods: A Philips 1.5 T magnetic resonance imaging scanner was used in order to obtain phantom images for quality control tests and images of the knee of an adult male. Results: There were no significant variations in the uniformity and signal-to-noise ratios with the phantom images. However, analysis of the high-contrast spatial resolution revealed significant degradation when scan percentages of 70% and 85% were used in the acquisition of T1- and T2-weighted images, respectively. There was significant degradation when a scan percentage of 25% was used in T1- and T2-weighted in vivo images (p ≤ 0.01 for both). Conclusion: The use of tools that limit the k-space is not recommended without knowledge of their effect on image quality.
publishDate 2016
dc.date.none.fl_str_mv 2016-06-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-39842016000300006
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-39842016000300006
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0100-3984.2015.0028
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Publicação do Colégio Brasileiro de Radiologia e Diagnóstico por Imagem
publisher.none.fl_str_mv Publicação do Colégio Brasileiro de Radiologia e Diagnóstico por Imagem
dc.source.none.fl_str_mv Radiologia Brasileira v.49 n.3 2016
reponame:Radiologia Brasileira (Online)
instname:Colégio Brasileiro de Radiologia e Diagnóstico por Imagem (CBR)
instacron:CBR
instname_str Colégio Brasileiro de Radiologia e Diagnóstico por Imagem (CBR)
instacron_str CBR
institution CBR
reponame_str Radiologia Brasileira (Online)
collection Radiologia Brasileira (Online)
repository.name.fl_str_mv Radiologia Brasileira (Online) - Colégio Brasileiro de Radiologia e Diagnóstico por Imagem (CBR)
repository.mail.fl_str_mv radiologiabrasileira@cbr.org.br
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