Abstract: An X-ray imaging system for obtaining a photographic image of the X-ray transmissivity of a body is disclosed. A source of X-rays is directable at the body, and an X-ray imaging subsystem is provided for receiving a pattern of X-rays transmitted through the body, including, in combination: a first X-ray-sensitive screen for converting the pattern of X-rays to a first pattern of light; a light-sensitive film adjacent the first X-ray sensitive screen for receiving the first pattern of light; a second X-ray sensitive screen for also converting the pattern of X-rays to the first pattern of light; an array of light detecting devices positioned to receive the first pattern of light from the second X-ray sensitive screen; means for storing electronic representations of the outputs of the array of light detecting devices; and light generating means responsive to the stored electronic representations for generating a second pattern of light which is directed at and received by the light-sensitive film.

Abstract: A method and system are disclosed for producing a photographic image of an X-ray pattern, including the following steps: converting the X-ray pattern to a first pattern of light; exposing a photographic film to said first pattern of light; detecting the light at elemental regions of the first pattern; generating a second pattern of light in a pattern which depends on the detected light; and exposing the photographic film to the second pattern of light. The generating of the second pattern of light includes generating light from a one-dimensional array of light emitters, and moving the array with respect to the photographic film. The disclosed invention provides improvement on the standard radiographic method in the following ways: (1) The recorded film contrast in low X-ray exposure regions that ordinarily would have been recorded in under-exposed regions on a film's characteristic curve will be increased significantly.

Abstract: A method and system are disclosed for producing a photographic image of an X-ray pattern, including the following steps: converting the X-ray pattern to a first pattern of light; exposing a photographic film to said first pattern of light; detecting the light at elemental regions of the first pattern; generating a second pattern of light in a pattern which depends on the detected light; and exposing the photographic film to the second pattern of light. The disclosed invention provides improvement on the standard radiographic method in the following ways: (1) The recorded film contrast in low X-ray exposure regions that ordinarily would have been recorded in under-exposed regions of the film's characteristic curve will be increased significantly. (2) The overall range of light transmission that must be viewed by the radiologist will be decreased without sacrificing diagnostic information.