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Preprocessing by means of subspace projections for continuous cerebral autoregulation assessment using NIRS

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dc.creatorCaicedo Dorado, Alexander
dc.creatorNaulaers, Gspa
dc.creatorVan Huffelspa
dc.date.accessioned2020-08-28T15:48:10Z
dc.date.available2020-08-28T15:48:10Z
dc.date.created2013-07-03spa
dc.description.abstractCerebral Autoregulation (CA) refers to the capability of the brain to maintain a more or less stable cerebral blood flow (CBF), despite the changes in blood perfusion. Monitoring this mechanism is of vital importance, especially in neonates, in order to prevent damage due to ischemia or hemorrhage. In clinical practice near-infrared spectroscopy (NIRS) measurements are used as a surrogate measurement for CBF. However, NIRS signals are highly dependent on the variations in arterial oxygen saturation (SaO 2 ). Therefore, only segments with relatively constant SaO 2 are used for CA assessment; which limits the possibilities of the use of NIRS for online monitoring. In this paper we propose the use of subspace projections to subtract the influence of SaO 2 from NIRS measurements. Since this approach will be used in an online monitoring system, this preprocessing is carried out in a window-by-window framework. However, the use of subspace projections in consecutive segments produces discontinuities; we propose a methodology to reduce these effects. Obtained results indicate that the proposed method reduces the effect of discontinuities between consecutive segments. In addition, this methodology is able to subtract the influence of SaO 2 from NIRS measurements. This approach facilitates the introduction of NIRS for online CA assessment.eng
dc.format.mimetypeapplication/pdf
dc.identifier.doihttps//doi 10.1109/EMBC.2013.6609930
dc.identifier.issnISSN: 1558-4615
dc.identifier.issnEISSN: 1094-687X
dc.identifier.urihttps://repository.urosario.edu.co/handle/10336/28427
dc.language.isoengspa
dc.publisherEngineering in Medicine and Biology Societyspa
dc.relation.citationTitleIEEE Engineering in Medicine and Biology Society
dc.relation.ispartofIEEE Engineering in Medicine and Biology Society, ISSN: 1558-4615; EISSN: 1094-687X (2013)spa
dc.relation.urihttps://ieeexplore.ieee.org/abstract/document/6609930spa
dc.rights.accesRightsinfo:eu-repo/semantics/restrictedAccess
dc.rights.accesoRestringido (Acceso a grupos específicos)spa
dc.sourceIEEE Engineering in Medicine and Biology Societyspa
dc.source.instnameinstname:Universidad del Rosario
dc.source.reponamereponame:Repositorio Institucional EdocUR
dc.subject.keywordMonitoringspa
dc.subject.keywordCoherencespa
dc.subject.keywordCorrelationspa
dc.subject.keywordPediatricsspa
dc.subject.keywordBlood flowspa
dc.subject.keywordSpectroscopyspa
dc.subject.keywordVectorsspa
dc.titlePreprocessing by means of subspace projections for continuous cerebral autoregulation assessment using NIRSspa
dc.title.TranslatedTitlePreprocesamiento mediante proyecciones subespaciales para la evaluación continua de la autorregulación cerebral mediante NIRSspa
dc.typearticleeng
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersion
dc.type.spaArtículospa
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