Medical thermal imaging is an imaging method that detects infrared heat from the surface of the body while producing a visual heat-map display. Modern medical thermography systems utilize sophisticated computerized post-image processing to extract accurate temperature data and other thermovascular information. This detection of infrared heat allows the healthcare provider to analyze and monitor physiological activity. Medical thermal imaging is supported by over 40 years of research and thousands of published medical studies. FDA clearance was gained in 1982, and from that point medical thermography started its emergence into hospitals and doctors’ offices. Medical thermography is also called digital infrared imaging or DII for short. Although medical thermography is not a standalone modality, it works extremely well in conjunction with other tests and procedures to locate possible infrared markers of concern.