INFRA-RED PHOTOS SHOW VEIN DISEASE (Jul, 1934)
With infra-red digital video cameras, computer processing and projectors this tech works amazingly well. Check out this video of the Vein Viewer (Warning: the link goes to a video that shows a person getting an injection and there is a small amount of blood. I know this freaks some people out.)
INFRA-RED PHOTOS SHOW VEIN DISEASE
Varicose veins and other conditions that interfere with the circulation can be detected with comparative ease by a method of photographic diagnosis recently demonstrated at Rochester, New York. Human skin, it was discovered, is nearly transparent to infra-red rays. By using film that was sensitive to this invisible light, photographs were taken in which veins lying just below the surface of the skin stood out clearly. Any derangement was readily apparent in the photographs.