cassette

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cassette

 [kah-set´] (Fr.)
a light-proof housing for x-ray film and electrostatic imaging plates, containing front and back intensifying screens, between which the film is placed; a magazine for film or magnetic tape.
grid cassette a cassette that has its front replaced by a built-in grid.

cas·sette

(kă-set'),
1. A plate, film, or tape holder for use in photography or radiography. A radiographic cassette contains two intensifying screens and a sheet of radiographic film.
2. A perforated holder in which tissue blocks are placed for paraffin embedding.
[Fr., dim. of casse, box]

cassette

/cas·sette/ (kah-set´) [Fr.] a light-proof housing for x-ray film, containing front and back intensifying screens, between which the film is placed; a magazine for film or magnetic tape.

cassette

[kaset′]
Etymology: Fr, little box
a device used in radiography for holding a sheet of x-ray film and one or two screens. A cassette also may have a grid to absorb scattered radiation.

cas·sette

(kă-set')
1. A plate, film, or tape holder for use in photography or radiography. A radiographic cassette contains one or two intensifying screens and a sheet of x-ray film.
2. A perforated holder in which tissue blocks are placed for paraffin embedding.
[Fr., dim. of casse, box]

cassette

A light-tight container for X-ray film.

cas·sette

(kă-set')
Plate, film, or tape holder for use in photography or radiography. A radio-graphic cassette contains two intensifying screens and a sheet of radiographic film.
[Fr., dim. of casse, box]

cassette (kəset´),

n a light, tight container in which radiographic films are placed for exposure to radiographs; usually backed with lead to eliminate the effect of backscattered radiation.
cassette, cardboard (cardboard filmholder),
n a cardboard envelope of simple construction suitable for use in making radiographs on “direct exposure” or “no-screen” types of radiographic films.
cassette, screen-type,
n a cassette usually made of metal, with the exposure side of low-atomic-number material, such as Bakelite, aluminum, or magnesium, and containing intensifying screens between which a “screen type” of film or films may be placed for exposure to radiographs.

cassette

1. a light-proof housing for x-ray film, containing front and back intensifying screens, between which the film is placed and held during exposure. Although it is usual to have two screens, there may be only one where there is a special need for a high detail picture.
2. a magazine for film or magnetic tape.

cassette grid
composed of alternating strips of lead and radiotranslucent material such as aluminum. Placed on top of the cassette it permits the passage only of the x-rays that are passing directly to the film. Scattered rays are absorbed by the lead and this reduces the effect of scatter on the film and provides a more clearcut image.
cassette holder
a radiolucent holder, into which the cassette fits, is on a long handle permitting the person holding the cassette to stay well clear of the x-ray beam.
cassette tunnel
a device which enables the operator to pass a number of cassettes past the x-ray beam and the grid without the need to open and reload cassettes.
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