Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/14634

TitleSpectroscopic detection of gastrointestinal dysplasia using optical microsensors
Author(s)Ferreira, D. S.
Pinto, V. C.
Correia, J. H.
Minas, Graça
KeywordsDiffuse-reflectance
Fabry–Perot optical filters
Fluorescence
Spectroscopy tissue diagnosis
Issue date23-Jun-2011
PublisherIEEE
JournalIEEE Transactions on Biomedical Engineering
Abstract(s)The detection of dysplasia in the gastrointestinal tract can be performed using optical microsensors based on thin-film optical filters and silicon photodiodes. This paper describes two optical microsensors that can be used for spectroscopy data collection in two different spectral bands (one in the violet/blue region and the other in the green region) for which two optical filters were designed and fabricated. An empirical analysis of gastrointestinal spectroscopic data using these specific spectral bands is performed. The obtained results show that it is possible to accurately differentiate dysplastic lesions from normal tissue, with a sensitivity and specificity of 77.8% and 97.6%, respectively. Therefore, the developed filters can be used as a tool to aid in diagnosis. The small size of the optical microsensors can enable, in the future, integration in endoscopic capsules.
TypeArticle
URIhttp://hdl.handle.net/1822/14634
DOI10.1109/TBME.2011.2160263
ISSN0018-9294
Publisher versionhttp://ieeexplore.ieee.org.
Peer-Reviewedyes
AccessRestricted access (UMinho)
Appears in Collections:DEI - Artigos em revistas internacionais

Files in This Item:
File Description SizeFormat 
IEEE trans Biom Eng V58 N9 2011_Debora.pdf
  Restricted access
Documento principal503,06 kBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID