Quantitative interpretation of infrared images of lower limbs in individuals with and without type 2 diabetes mellitus

• DOI: 10.1111/srt.70039
• Publication Date: 2024-09-05T04:11:44Z
• Authors: Edgar I. Fuentes‐...; Rosalinda Ortiz‐Sosa; Raúl Serrano‐Loyola; Rebeca Solalinde‐...; Crescencio García...
• Keywords: Stimulus (psychology)

Abstract Background The quantitative interpretation of the radiometric information extracted from infrared (IR) images in individuals with and without type 2 diabetes mellitus (DM2) is an open problem yet to be solved. This particular value given that DM2 a worldwide health onset for evolution toward diabetic foot disease (DFD). Since causes changes at vascular neurological levels, metabolic heat distribution on outer skin modified as consequence such alterations. Of interest this contribution are those alterations displayed over skin's patterns lower limbs. At core deterioration networks responsible procuring systemic thermoregulation. It within context IR imaging introduced likely aiding tool assist clinical diagnosis stages early enough prevent DFD. Methods limbs acquired cohort clinically diagnosed DM2. Additional inclusion criteria patients free any visible wound or tissue‐related trauma (e.g., injuries, edema, so forth), also non‐metabolic comorbidities. All data equally processed analyzed using indices evaluate spatial temporal temperature We studied response individuals’ legs after inducing external stimulus. For purpose, we combine asymmetry thermal index (ATR) (TRI), computed different times, improving results previously obtained individually ATR TRI. Results A novel representation presented. was built TRI anterior posterior views (PVs), combining both views. In all cases, each view presents linearity properties allow said interpreted quantitatively well‐defined limited space. representation, polar coordinate space, allows obtaining sensitivity values 86%, 97%, specificity 83%, 72%, 78% (AV), PV, combined views, respectively. Additionally, it observed angular variable defines new space significantly ( p < 0.01) differentiate groups, while correlating variables interest, glucose glycated hemoglobin. Conclusion exist between extremities DM2, construction eliminates possible ambiguities interpretation, simplifying it, making accessible use.