A system using infrared photography or other infrared detection techniques to produce images or graphical representations of the distribution of body surface temperature for the purpose of diagnosing and assessing various conditions and disease states. Also referred to as a thermography scanner. This system typically consists of a camera display unit that includes a scanning-condensing optical system, infrared detector, an operator's console, photographic cameras, black-body phantom, electronic or computerized controls, software and an image display and analysis units.