Thermography involves measuring infrared radiation and transforming it into temperature. Here, a matrix-type sensor makes it possible to capture this radiation in the spectral band of 7 to 13 µm and to restore it in the form of a color-coded image representing the temperature distribution of the measured scene. To obtain the actual temperature, each radiation in W / m² is multiplied by the emissivity coefficient of the material that is measured. For skin this coefficient is 0.98
It is well known that as higher the ultrasound frequency is, the better the resolution and smallest superficial tissue structures visualization and measurements. To diagnose skin changes you need probes from 22 to 100 MHz, which allow you to evaluate the entire skin thickness and for epidermis and dermis sighting examination. The most optimal frequencies in this practice are 33-75 MHz.