Diagnostic value of infrared thermography-based skin temperature monitoring for lower extremity arterial disease in patients with diabetic foot
10.3969/j.issn.1671-8348.2025.05.007
- VernacularTitle:基于红外热成像的皮肤温度监测对糖尿病足患者下肢动脉病变的诊断价值研究
- Author:
Lijiao WANG
1
;
Xiaolan HE
Author Information
1. 温州医科大学附属第一医院创面修复中心,浙江温州 325035
- Keywords:
infrared thermography;
diabetic foot;
lower extremity arterial disease;
wound surface rela-tive temperature;
diagnostic value
- From:
Chongqing Medicine
2025;54(5):1085-1091
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigates the diagnostic value of infrared thermography-based skin temper-ature monitoring for lower extremity arterial disease(LEAD)in patients with diabetic foot.Methods A total of 160 patients with diabetic foot admitted to the hospital from March 2023 to December 2024 were selected as the research subjects and divided into the LEAD group(n=120)and the non-lesion group(n=40)based on the diagnostic results of color Doppler ultrasound.Spearman analysis was used to evaluate the correlation be-tween the relative temperature of diabetic foot ulcer(DFU)wounds measured by infrared thermography and the diameter and blood flow of lower limb arteries.Stepwise logistic regression analysis was performed to i-dentify the influencing factors of LEAD and subgroup analysis was conducted based on the presence or absence of infection.Receiver operating characteristic(ROC)curve analysis was used to assess the diagnostic efficacy of DFU wound relative temperature for LEAD and lower limb arterial atherosclerotic plaques,lumen stenosis,and lumen occlusion.Results There were statistically significant differences between the two groups in DFU wound temperature,skin temperature at the same site on the healthy side,DFU wound relative temperature,ankle brachial index(ABI),C-reactive protein(CRP),uric acid,and the peak velocity(PSV)and pulsatility index(PI)levels of the femoral artery,popliteal artery,and dorsalis pedis artery,as well as the proportions of lower limb arterial atherosclerotic plaques and lumen stenosis(P＜0.05).Spearman analysis showed that the relative temperature of DFU wounds was negatively correlated with PSV of the femoral artery,popliteal arter-y,and dorsalis pedis artery,and positively correlated with PI(P＜0.05).Univariate logistic regression analy-sis indicated that ABI,DFU wound relative temperature,uric acid,and the PSV and PI of the femoral artery,popliteal artery,and dorsalis pedis artery were influencing factors for LEAD(P＜O.05).Multivariate logistic regression analysis revealed that DFU wound relative temperature and uric acid were influencing factors for LEAD in diabetic foot(P＜0.05).Subgroup analysis showed that DFU wound relative temperature was an in-fluencing factor for LEAD in diabetic foot(P＜0.05),and there was no interaction between diabetic foot in-fection and the relationship between DFU wound relative temperature and LEAD in diabetic foot(P＞0.05).The area under the curve(AUC)for predicting LEAD using DFU wound relative temperature was 0.923,with the cut-off temperature being 5.4 ℃.The AUCs for predicting lower limb arterial atherosclerotic plaques,lumen stenosis,and lumen occlusion were 0.720,0.657,and 0.554,respectively,with the cut-off temperatures being 5.6,6.3,and 4.6 ℃,respectively.Conclusion DFU wound surface relative temperature of infrared thermog-raphy can effectively diagnose LEAD in diabetic foot.
