Infrared thermography and influence factors

Infrared thermography and influence factors

08/05/2020 Infographics

Infrared Thermography is very intuitive and easy to use. Nevertheless it is very important to understand that, if we want to optimize its use and benefits (mainly in humans), we should take into account the factors that might influence its results and therefore, the correct interpretation of them.

Fernández-Cuevas and collaborators (2015) published a detailed article suggesting a classification of those factors:

  • Environmental factors: everything related to the location where the thermal evaluation takes place, as the ambient temperature, humidity or the existence of any source of radiation.
  • Individual factors: divided into intrinsic and extrinsic, that is to say, those inherent to the subject (as age, gender or medical history) and these vinculated with the activities done previous to the evaluation (exercise, treatments or food intake).
  • Technical factors: not only the resolution or thermal sensitivity of the camera, but also which protocol is performed or how statistics are done.

The application of Infrared Thermography in humans might seem unapproachable after this classification, but the good news is that almost all factors affect symmetrically our body. Therefore, the use of the methodology of thermal asymmetries and a proper protocol to know factors that might create not significant alerts (as medical history) is a strong and reliable way to reduce their impact and optimize the use and benefits of Thermography.


Europa Thermohuman ThermoHuman has had the support of the Funds of the European Union and the Community of Madrid through the Operational Programme on Youth Employment. Likewise, ThermoHuman within the framework of the Export Initiation Program of ICEX NEXT, had the support of ICEX and the co-financing of the European Regional Development Fund (ERDF).

CDTI Thermohuman has received funding from the Centre for the Development of Industrial Technology (CDTI), in participation with the European Regional Development Fund (ERDF), for the R+D activities involved in creating a new tool, based on thermography, for the prediction and prevention of rheumatoid arthritis. See project detail.