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is a convenient darkroom feature when there is a frequent need to transfer film to and from the darkroom while it is in use.
is radiation from the cassette back and the cassette tray that is scattered back toward the film.
is a special cassette with a grid built into the front side. Both portable grids and grid cassette with a grid cassettes are used for mobile and surgical radiography and for special applications when the patient cannot be positioned on the table or at upper ratios than the grids used in permanent installations.
The result of either coherent scattereing or the compton effect is usually know as this.
occurs at energy levels throughout the diagnostic x-ray range. The incoming x-ray photon interacts with an outer orbital electron of an atom, removing it from the atom and then proceeds in a different direction.
is a listing of the various radiographic examinations performed in the facility. It provides exposure factors for each body part according to its thickness.
An artifact formed by attempting to hold a film horizontal with one hand and allowing it to bend.
are special light fixtures fitted with filters, will only permit the passage of light frequencies to which the film is least sensitive.
Grids for general-purposes use, because the lead strips are aligned to the direction of the diverging primary x-ray beam.
Its name implies, is an air space between that patient and the film. In other words, Large object-image receptor distance (OID).
is a human skeleton, or portion of a skeleton, encased in a plastic material that is similar in density to human tissue.
is one of the two types of digital imaging systems; Was introduced in the United States in 1983 by Fuji Medical Systems of Japan.
Manual film processing system
consists of a large tank plumbed for constant water flow. The flow rate should be sufficient to provide eight complete changes per hour.
The dryer section of the processor consists of air tubes with long slits. The air tubes are mounted on both sides of the of the dryer rack, directing warm air at both sides of the film as it passes through this portion of the roller system.
To compensate for these variations in tissue density, specially desined attenuating devices, which can be placed between the radiographic tube and IR.
The best policy is to use the highest kVp setting that will produce sufficient contrast for acceptable image quality.
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