FLUOROSCOPE

also called fluorescent screen instrument consisting of a surface containing phosphors that glow when impinged on by X-rays or gamma rays; it is used to transform images made up of invisible radiations into visible light. In diagnostic radiology (fluoroscopy), a beam of penetrating radiation is passed through parts of the body; transmitted radiation forms an image of the internal organs in motion on the screen for viewing. Fluoroscopes are also used for the examination of, and search for flaws in, raw materials, manufactured articles, and welded joints.