Diabetic foot early diagnosis and statistical analysis by spectral terahertz reflection images.

In this work, the development of a technique for the early diagnosis of diabetic foot using terahertz spectroscopic images is presented. The degree of hydration of the skin on the sole of the foot of diabetic and non-diabetic subjects was obtained and related to the degree of deterioration. The hydration information was coded in three-color (red, yellow and greed) images which allow to easily identify areas in risk of ulceration. The hydration images together with the three-color images represent a quantitative indicator of the deterioration caused by the diabetic foot syndrome.