Validation of low-cost smartphone-based thermal camera for diabetic foot assessment.
Diabetes Res Clin Pract
; 149: 132-139, 2019 Mar.
Article
em En
| MEDLINE
| ID: mdl-30738090
ABSTRACT
AIMS:
Infrared thermal imaging (IR) is not yet routinely implemented for early detection of diabetic foot ulcers (DFU), despite proven clinical effectiveness. Low-cost, smartphone-based IR-cameras are now available and may lower the threshold for implementation, but the quality of these cameras is unknown. We aim to validate a smartphone-based IR-camera against a high-end IR-camera for diabetic foot assessment.METHODS:
We acquired plantar IR images of feet of 32 participants with a current or recently healed DFU with the smartphone-based FLIR-One and the high-end FLIR-SC305. Contralateral temperature differences of the entire plantar foot and nine pre-specified regions were compared for validation. Intra-class correlations coefficient (ICC(3,1)) and Bland-Altman plots were used to test agreement. Clinical validity was assessed by calculating statistical measures of diagnostic performance.RESULTS:
Almost perfect agreement was found for temperature measurements in both the entire plantar foot and the combined pre-specified regions, respectively, with ICC values of 0.987 and 0.981, Bland-Altman plots' mean Δâ¯=â¯-0.14 and Δâ¯=â¯-0.06. Diagnostic accuracy showed 94% and 93% sensitivity, and 86% and 91% specificity.CONCLUSIONS:
The smartphone-based IR-camera shows excellent validity for diabetic foot assessment.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Pé Diabético
/
Smartphone
Tipo de estudo:
Health_economic_evaluation
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Observational_studies
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Screening_studies
Limite:
Aged
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Female
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Humans
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Male
Idioma:
En
Revista:
Diabetes Res Clin Pract
Assunto da revista:
ENDOCRINOLOGIA
Ano de publicação:
2019
Tipo de documento:
Article