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Skin temperature of the foot: Reliability of infrared image analysis based in the angiosome concept

2018Journal article Open access
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dc.contributor.authorRicardo Vardasca, PhD, ASIS, FRPS
dc.date.accessioned2019-11-13T01:54:04Z
dc.date.available2019-11-13T01:54:04Z
dc.date.issued2018
dc.description.abstractObjective: Studies reporting the reliability of image analysis when assessing skin temperature of the foot are scarce. The aim of this study was to assess the interrater and intrarater reliability of the analysis of foot skin temperature based on the angiosome concept and the association between skin temperature differences and the differences in size of the ROIs. Methodology: Thermograms from 26 feet were analysed by two independent assessors and each assessor analysed the same images on different occasions. Mean temperature values of each of the six ROIs were extracted for analysis. Relative reliability was assessed by Intraclass Correlation Coefficient (ICC) measures and absolute reliability was assessed using Bland and Altman agreement measures and standard error of measurement (SEM). The Spearman correlation coefficient was used to assess the association between the skin temperature differences and the differences in size of the ROIs in the interrater and intrarater analysis Results: The ICC values evidenced excellent interrater and intrarater reliability with the 95% confidence intervals (CI) ranging between 0.962 and 1.000 and the SEM ranged between 0.00 °C and 0.36 °C. The mean absolute difference (bias) between the measurements ranged between 0.002 °C and 0.117 °C and small to moderate associations between the differences in skin temperature and the difference in the number of pixels were identified.Conclusion: The excellent interrater and intrarater reliability measures suggest that the methodology of analysis was reliable and may be used in research and clinical settings. Although statistical significant associations between the skin temperature differences and the differences in size of the ROIs were found, the magnitude of the skin temperature differences between assessments and between assessors (0.02–0.17 °C) is not clinically relevant.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doihttps://doi.org/10.1016/j.infrared.2018.07.002pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.26/30133
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S1350449518303360?via%3Dihubpt_PT
dc.titleSkin temperature of the foot: Reliability of infrared image analysis based in the angiosome conceptpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FEMS%2F50022%2F2013/PT
oaire.citation.endPage408pt_PT
oaire.citation.startPage402pt_PT
oaire.citation.titleInfrared Physics and Technologypt_PT
oaire.citation.volume92pt_PT
oaire.fundingStream5876
person.familyNameVardasca
person.givenNameRicardo
person.identifierR-001-FFR
person.identifier.ciencia-id9F17-FD5F-E767
person.identifier.orcid0000-0003-4217-2882
person.identifier.ridJ-4948-2013
person.identifier.scopus-author-id24491279800
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication33602b11-6c79-40f9-a768-d7c792bc2d57
relation.isAuthorOfPublication.latestForDiscovery33602b11-6c79-40f9-a768-d7c792bc2d57
relation.isProjectOfPublication8632269b-8e4b-4355-a5ed-db05c16d8002
relation.isProjectOfPublication.latestForDiscovery8632269b-8e4b-4355-a5ed-db05c16d8002

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