Medical DITI is a noninvasive diagnostic technique that allows the examiner to visualise and quantify changes in skin surface temperature. An infrared scanning device is used to convert infrared radiation emitted from the skin surface into electrical impulses that are visualised in colour on a monitor. This visual image graphically maps the body temperature and is referred to as a thermogram. The spectrum of colours indicate an increase or decrease in the amount of infrared radiation being emitted from the body surface. Since there is a high degree of thermal symmetry in the normal body, subtle abnormal temperature asymetry's can be easily identified.

Clinical uses for DITI include;
1. To define the extent of a lesion of which a diagnosis has previously been made;
2. To localise an abnormal area not previously identified, so further diagnostic tests can be performed;
3. To detect early lesions before they are clinically evident;
4. To monitor the healing process before the patient is returned to work or training.