x-ray film

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Related to x-ray film: radiographic film

film

[film]

1. a thin layer or coating.

2. a thin sheet of material (e.g., gelatin, cellulose acetate) specially treated for use in photography or radiography; used also to designate the sheet after exposure to the energy to which it is sensitive.

bite-wing film an x-ray film with a protruding tab to be held between the upper and lower teeth, used for a bite-wing radiograph of oral structures.

gelatin film, absorbable a sterile, nonantigenic, absorbable, water-insoluble coating used as an aid in surgical closure and repair of defects in the dura mater and pleura and as a local hemostatic.

spot film a radiograph of a small anatomic area obtained either by rapid exposure during fluoroscopy to provide a permanent record of a transiently observed abnormality, or by limitation of radiation passing through the area to improve definition and detail of the image produced. See also spot-film radiography.

x-ray film film sensitized to x-rays, either before or after exposure.

Cross-sectional view of radiographic film. The bulk of the film is the base. The emulsion contains the diagnostic information. From Bushong, 2001.

x-ray film

A special photographic film with a sensitive emulsion layer that blackens in response to the light from intensifying screens. The emulsion has silver halide crystals immersed in gelatin. Single-emulsion film has the emulsion on one side of the cellulose base. It is used for digital, mammographic, and extremity imaging, in which high detail is necessary. Duplitized film has the emulsion on both sides of the cellulose base. It is used for general-purpose radiological studies.

See also: film

References in periodicals archive ?

The bitewing X-ray film holder consists of two planes, a film-holding plane and a bite plane.

Assembly and clinical use of XCP-ORA: a three-function dental X-ray film positioning device for taking anterior and posterior periapical and bitewing intraoral radiographs

A small range or latitude of densities and contrast are seen on x-ray film. Often many densities are confusing to read or misread for something else.

Saying goodbye to yesterday. (Student Scope)

Even so, one must always bear in mind that the system is only an aid, and that any final identification will be made by an expert's visual comparison of x-ray films.

Standardized measurements of radiographic films of the frontal sinuses: An aid to identifying unknown persons

Although the film itself is located intraorally and is difficult to see, the collimator ring is located extra-orally when the assembled XCP is placed in the patient's mouth because lining up the plane of the opening of the x-ray tube with the plane of the collimator ring will also align the plane of the x-ray tube opening parallel with the plane of the x-ray film. When the film is placed in the film holder, the side of the film facing the collimator ring (and consequently the x-ray beam) must be the white exposure side of the film.

Assembly and clinical use of the XCP dental x-ray film holder orientation devices in dentistry

A shredder cuts used X-ray film into strips that are fed into a reactor, where they are mixed with the enzyme under alkaline conditions.

Extracting silver from used X-ray film

To put the method into practice, a pilot plant to reprocess 1 ton of used X-ray film per day is scheduled to open in Osaka within 2 years, he told Science News.

Mining for lost silver

In 1918, the first commercial x-ray film was introduced, followed shortly by a double emulsion product.

Extraoral x-ray film continues to evolve, improve

A revolutionary system could lead to the elimination of X-ray film technology.

Is the end of x-rays near?

They place an X-ray film from a mammogram on the machine, and a light beam scans the image.

A better breast test: bringing digital imaging to mammography

He estimates that fewer than half of the dentists in the United States have switched to "E speed" X-ray film. Available since 1981, the high-speed film requires half the X-ray dose of the most commonly used film.