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Quantitative evaluation of the rate of thermal response in the lower extremities on individuals with and without type 2 diabetes mellitus.
Quant. Infrared Thermogr. J., DOI: 10.1080/17686733.2026.2676638 (2026)
A quantifier of the thermal response to a thermal challenge in the lower extremities can reveal peripheral impairment in patients with type 2 Diabetes Mellitus (DM2), aiding timely diagnosis and treatment. This study introduces the parameter Vri as a feasible quantifier of metabolic performance in a temperature regulation process of the lower limbs of individuals with DM2. This index is derived from the analysis of an infrared image sequence through the rate of recovery of metabolic heat of the lower limbs after an instantaneous thermal stimulus, termed the slope value index. The same thermal challenge is applied to a group of patients with DM2 and control volunteers, also clinically supervised. Evaluation of Vri showed reduced recovery performance in patients with DM2 compared to the performance exhibited by the control group. According to ROC analysis, this parameter Vri yielded sensitivity and specificity above 0.8, reaching 92% and 83%, respectively. An additional result is that distance (Formula presented.) shows that its correlation with clinical variables is statistically significant: glucose (p < 0.01) and HbA1c (p < 0.001). This method offers a non-radiative and non-invasive approach for assessing metabolic deterioration in the lower extremities, potentially suitable for unlimited use both in diagnosis and during treatment.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Biomedical Infrared Imaging ; Diabetic Foot Disease ; Temperature Regulation ; Thermal Response ; Type 2 Diabetes Mellitus; Symmetry; Neuropathy; Asymmetry
ISSN (print) / ISBN
1768-6733
e-ISSN
2116-7176
Publisher
Taylor & Francis
Publishing Place
2-4 Park Square, Milton Park, Abingdon Or14 4rn, Oxon, England
Reviewing status
Peer reviewed
Institute(s)
Institute of Biological and Medical Imaging (IBMI)
Grants
Universidad Nacional Autnoma de Mxico