a machine that uses X-rays to cast shadows of the internal structure of people, animals, raw material, welds, etc. on a fluorescent screen: the shadows vary in intensity according to the density of the object or part
A device equipped with a fluorescent screen on which the internal structures of an optically opaque object, such as the human body, may be continuously viewed as shadowy images formed by the differential transmission of x-rays through the object. Also called roentgenoscope.