Abstract
The use of image intensifying systems has led to a major reduction of dose to the patient in cineradiography. This technique can, therefore, be used in those cases where a study of rapidly moving physiological processes is essential, with less danger to the patients and their progeny than hitherto. The possibility of viewing and studying the film repeatedly without having to expose the patient again and again to X rays should be considered a major advantage of cineradiography as compared with fluoroscopy. During the 1953 Annual Congress, Teves (1955) described an X-ray image intensifier tube with a 5½ in. circular field. This type of tube has been increasingly used, together with 35 or 16 mm cameras, for cineradiography. Since then Hardenberg (in publication) has constructed a cineradiographic camera unit which employs an image intensifier tube with an 11 in. circular field (Fig. 1). The intensifier tube consists of an evacuated metal vessel with a spherical glass window. The X-ray screen, covered by the ...
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