Thermography is a no contact, radiation-free, state-of-the-art screening procedure that uses heat detection to locate areas of temperature differences in the body.  Most pathological processes demonstrate a form of increased heat, and some neurological processes show excessive cold or hypothermia.  As an example, breast disease can be detected by looking for areas of excessive or increasing heat that may indicate areas of angiogenesis or increase of blood vessels supplied by a growing tumor.