Powered by OpenAIRE graph
Found an issue? Give us feedback
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/ ZENODOarrow_drop_down
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
ZENODO
Conference object . 2019
License: CC BY
Data sources: Datacite
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
ZENODO
Other literature type . 2019
License: CC BY
Data sources: ZENODO
image/svg+xml art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos Open Access logo, converted into svg, designed by PLoS. This version with transparent background. http://commons.wikimedia.org/wiki/File:Open_Access_logo_PLoS_white.svg art designer at PLoS, modified by Wikipedia users Nina, Beao, JakobVoss, and AnonMoos http://www.plos.org/
ZENODO
Conference object . 2019
License: CC BY
Data sources: Datacite
versions View all 2 versions
addClaim

Eye fundus oxygenation mapping from color retinographs

Authors: Dias, Antonio Alberto De Sousa; Sampaio, Murilo Sanches; Cardoso, George Cunha;

Eye fundus oxygenation mapping from color retinographs

Abstract

Resumo – A cegueira no mundo desenvolvido é causada principalmente por degeneração macular, retinopatia diabética, glaucoma dentre outras doenças. Tais doenças afetam a retina e estão relacionadas à entrega deficiente de oxigênio ou à redução no metabolismo. O diagnóstico dessas deficiências pode ser feito por técnicas que permitam mensurar oxigenação na retina, distinguir veias de artérias e detectar oclusão vascular. Sistemas médicos de tomografia de coerência óptica (OCT) permitem avaliar a vasculatura da retina, a forma da cabeça do nervo óptico e lesões retinianas. Entretanto, através de OCT só se é capaz de perceber a deficiência na oxigenação tardiamente através do afinamento da retina. Ademais, OCT é uma técnica de alto custo. O objetivo do presente trabalho é estudar o uso de espectroscopia por imagem, usando equipamento de baixo custo e não-invasivo para mapear a oxigenação da retina. Mostramos que, baseado na lei de Beer-Lambert óptica, é possível quantificar os níveis de desoxihemoglobina, oxihemoglobina e melanina presentes na retina. Isso possibilita, a determinação da oxigenação do sangue, a partir de uma imagem fotográfica de fundo do olho. Mostramos nesse estudo piloto (n=3 imagens de retinas) que o padrão de oxigenação de uma retina normal é diferente da oxigenação de uma retina com retinopatia diabética e hipertensiva. Há potencial de uso como técnica de diagnóstico.

Related Organizations
Keywords

oximetria de retina, imagem de fundo do olho, doenças oculares

  • BIP!
    Impact byBIP!
    selected citations
    These citations are derived from selected sources.
    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    0
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
    OpenAIRE UsageCounts
    Usage byUsageCounts
    visibility views 4
    download downloads 3
  • 4
    views
    3
    downloads
    Powered byOpenAIRE UsageCounts
Powered by OpenAIRE graph
Found an issue? Give us feedback
visibility
download
selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
views
OpenAIRE UsageCountsViews provided by UsageCounts
downloads
OpenAIRE UsageCountsDownloads provided by UsageCounts
0
Average
Average
Average
4
3
Green