Abstract: A radiographic imaging assembly has a first radiographic silver halide film in association with a second radiographic silver halide film wherein the ratio of photographic speed of the two films is greater than 0.15 logE. The combination of two films, with or without one or more fluorescent intensifying screens, provides images with excellent contrast and improved exposure latitude for use in various exposure conditions and equipment.

Abstract: A radiographic imaging assembly has first and second radiographic silver halide films in association with two fluorescent intensifying screens. Disposed between one set of screen and film is a neutral density filter having a density of at least 0.3 to provide improved exposure latitude for use in various exposure conditions and equipment.

Abstract: Radiographic films containing cubic grain, high silver chloride emulsions can be used in radiographic imaging assemblies comprising intensifying screens for therapy portal localization imaging. The average silver halide grain size is from about 0.1 to about 0.18 &mgr;m and the silver halide is free of silver halide dopant compounds. These films provide excellent contrast with improved exposure latitude for use in various exposure conditions and equipment.

Abstract: Radiographic films containing cubic grain, high silver chloride emulsions can be used in radiographic imaging assemblies comprising intensifying screens for therapy portal imaging. The average silver halide grain size is from about 0.1 to about 0.18 &mgr;m. These films provide excellent contrast with improved exposure latitude for use in various exposure conditions and equipment.

Abstract: High performance radiographic films exhibit excellent exposure latitude when imaged in radiographic imaging assemblies comprising intensifying screens. These films having at least two tabular silver halide emulsions on each side of a film support, and the emulsion closest to the film support on each side includes chemistry to control crossover and a rhodium dopant and has higher photographic speeds than the other emulsions. These films are particularly useful for thoracic imaging.

Abstract: High performance, very high contrast radiographic films exhibit visually adaptive contrast when imaged in radiographic imaging assemblies comprising intensifying screens. These films having at least two tabular silver halide emulsions on each side of a film support, and the emulsion closest to the film support on each side includes chemistry to control crossover and a rhodium dopant and has higher photographic speeds than the other emulsions. In addition, the films can be rapidly processed to provide images having a peak gamma >3.1 while maintaining gammas >1.0 out into the toe of a D vs. logE sensitometric curve to a value of −0.9 logE. These films are particularly useful for thoracic imaging.

Abstract: High speed and high contrast radiographic films can be imaged in radiographic imaging assemblies comprising intensifying screens. These films having a tabular silver halide emulsions on each side of a film support. At least one emulsion comprises a rhodium dopant and has higher photographic speeds than the other emulsions despite the fact that the emulsion grains have a small average thickness of from about 0.09 to about 0.11 &mgr;m.

Abstract: High performance radiographic films exhibit visually adaptive contrast when imaged in radiographic imaging assemblies comprising an intensifying screen on both sides. These films having a single silver halide emulsion on each side of a film support and are free of particulate dyes that are conventionally used to control crossover. In addition, the films can be rapidly processed to provide the desired image having visually adaptive contrast, that is the upper scale contrast is at least 1.5 times the lower scale contrast. Thus, dense objects can be better seen at the higher densities of the radiographic image without any adverse sensitometric changes in the lower scale densities. These films are useful for general-purpose radiographic imaging using a wide variety of exposure and processing conditions.

Abstract: Localization radiographic films containing rhodium-doped, cubic grain, high silver chloride emulsions can be used in radiographic imaging assemblies comprising intensifying screens for therapy imaging. The average silver halide grain size is from 0.20 to about 0.30 &mgr;m, and they comprise at least 80 mol % chloride based on total silver. These films provide colder image tones and reduced processing non-uniformities.

Abstract: High performance, very high contrast radiographic films exhibit visually adaptive contrast when imaged in radiographic imaging assemblies comprising intensifying screens. These films having at least two tabular silver halide emulsions on each side of a film support, and the emulsion closest to the film support on each side includes chemistry to control crossover and a rhodium dopant and has higher photographic speeds than the other emulsions. In addition, the films can be rapidly processed to provide images having visually adaptive contrast wherein the upper scale contrast is at least 1.7 times the lower scale contrast. These films are particularly useful for orthopedic imaging.

Abstract: A direct radiographic film is usefull for dental care. The film contains lower than normal amounts of silver 30-45 mg/dm2) and gelatino-vehicle 15-30 mg/dm2) in each silver halide emulsion unit but retains the ability to provide desired sensitometric results. The film comprises predominantly non-spectrally sensitized silver bromide tabular grains.

Abstract: High performance radiographic films exhibit visually adaptive contrast when imaged in radiographic imaging assemblies comprising an intensifying screen on both sides. These films have at least two silver halide emulsions (preferably tabular grains) on each side of a film support, and the emulsion closest to the film support on each side includes chemistry to control crossover. In addition, the films can be rapidly processed to provide the desired image whereby the upper scale contrast is at least 1.2 times the lower scale contrast. Thus, dense objects can be better seen at the higher densities of the radiographic image without any adverse sensitometric changes in the lower scale densities.

Abstract: High performance radiographic films exhibit visually adaptive contrast when imaged in radiographic imaging assemblies comprising an intensifying screen on both sides. These films have at least two silver halide emulsions (preferably tabular grains) on each side of a film support, and the emulsion closest to the film support on each side includes chemistry to control crossover. In addition, the films can be rapidly processed to provide the desired image whereby the upper scale contrast is at least 1.2 times the lower scale contrast. Thus, dense objects can be better seen at the higher densities of the radiographic image without any adverse sensitometric changes in the lower scale densities. These films have greater dynamic range that allows them to be scanned and digitized to correct for under- or over-exposure.

Abstract: High performance, high contrast radiographic films exhibit visually adaptive contrast when imaged in radiographic imaging assemblies comprising an intensifying screen on both sides. These films having at least two silver halide emulsions on each side of a film support, and the emulsion closest to the film support on each side includes chemistry to control crossover and has higher photographic speeds than the other emulsions. In addition, the films can be rapidly processed to provide the desired image having visually adaptive contrast, i.e. the upper scale contrast is at least 1.7 times the lower scale contrast. Thus, dense objects can be better seen at the higher densities of the radiographic image without any adverse sensitometric changes in the lower scale densities. These films are useful for general purpose, high contrast radiographic imaging.

Abstract: Low silver black-and-white photographic elements, such as radiographic films, can be processed quickly using black-and-white developing and fixing compositions having reduced photoprocessing activity. The entire process is fairly rapid and effective despite the lowered concentrations of photographic developing and fixing agents. The processing compositions are more environmentally friendly because the conventional hydroquinone is replaced with an ascorbic acid developing agent. In addition, the processing compositions are free of ammonium ions.

Abstract: Low silver black-and-white photographic elements, such as radiographic films, can be processed quickly using a two-stage process in which black-and-white development is carried out in the first stage for up to 30 seconds, and such development continues along with fixing in the second stage for up to 60 seconds when a fixing composition is added. Both stages are carried out in the same processing container.

Abstract: Low silver black-and-white photographic silver halide elements, such as radiographic films, can be processed quickly using black-and-white developing and fixing compositions having reduced photoprocessing activity. The entire process is fairly rapid and effective despite the lowered concentrations of photographic developing and fixing agents.

Abstract: Black-and-white elements, such as radiographic films, can be processed in roomlight because they include certain light absorbing dyes and desensitizers. Processing of such elements can be achieved using a processing kit and a two-stage process carried out in the same light- and fluid-tight processing apparatus. In the first stage, development is initiated with a developing composition having a pH of from about 10 to about 12.5, and comprising an appropriate black-and-white developing agent and a sulfite. After an appropriate time, a non-sulfite fixing agent is introduced into the processing apparatus or container to provide a combined developing/fixing composition, and development and fixing are carried out simultaneously. The processing method is carried out quickly, usually within about 90 seconds. The presence of sulfite and high pH in both stages decolorizes or deactivates the particulate dyes.

Abstract: Low silver black-and-white photographic silver halide elements, such as radiographic films, can be processed quickly using a developing/fixing monobath composition that includes an ascorbic acid developing agent, sulfite ions and a photographic fixing agent that has both a thiol group and an amino group (such as cysteine).

Abstract: Portal localization radiographic elements and a process of confirming the targeting of a beam of X-radiation of from 4 to 25 MVp using the portal radiographic elements are disclosed. The X-radiation is directed at a subject containing features that are identifiable by differing levels of X-radiation absorption. After a first X-radiation exposure a shield containing a portal is placed between the subject and the source of X-radiation. X-radiation is directed at the subject through the portal. In each instance the X-radiation leaving the subject impinges on a metal screen, causing it to emit electrons, and the electrons impinge upon a fluorescent screen, causing it to emit light, creating during the first and second exposures first and second superimposed latent images in the radiographic element.