Cinefluorography Employing Split-Image Television Type Image Amplifiers

In September 1955 Russell Morgan read (1), and in January 1956 published (2) a paper concerning the history and theory of image amplification. He dealt particularly with his own system that employs an RCA Image Orthicon but mentioned research that was in progress on television type amplifiers that are directly sensitive to x-rays without the necessity of first converting them into visible light. The x-ray image amplifier developed recently for General Electric by their Mr. John E. Jacobs is an instrument of this latter type. This report will describe its construction and operation and point out certain important differences between it and the amplifiers of Westinghouse, Philips, Morgan, and Moon. Preliminary cineradiographic results using the General Electric amplifiers will be presented. The Westinghouse (3) and Philips (4) amplifiers (Figs. 1 and 2) have been shown repeatedly at radiological meetings in recent years, are available commercially, and have enjoyed some clinical use in Europe and the United...