General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

All metal contsrtuction.

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

96.1 cm

Width

42.0 cm

Height

9.6 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Medical Technology

Category

Radiology

Sub-Category

N/A

Manufacturer

AKA

General Electric

Country

United States of America

State/Province

Illinois

City

Chicago

Context

Country

North America

State/Province

Unknown

Period

This type of cassette holder used c. 1930s+

Canada

A piece of supplemental X-ray equipment used by radiologists and technicians.

Function

Used to hold x-ray film cassette in desired position.

Technical

Sample of basic X-ray cassette at the time. The light-tight film cassette is made up of several layers. There is a thin plastic sheet on the side which faces the patient and X-ray tube, and beneath this there is a thin fluorescent layer. This layer absorbs the X-rays more strongly than the film and produces a fluorescent image which is transposed to the photographic emulsion on the upper side of the film. X-ray film is dual sided, and so a second fluorescent layer (thicker than the first) is beneath the film. There may be a lead foil layer next, which is particularly important if cassettes are stacked in the magazine of a rapid cassette changer.1 It is most important that there is intimate contact between the film and the fluorescent screens if a sharp image is to formed. Some cassettes include a secondary radiation grid for situations where a moving grid is not being used.1

Area Notes

Unknown

Details

Markings

"GENERAL [GE logo] ELECTRIC/ X-RAY CORPORATION/ MADE IN CHICAGO, ILLINOIS U.S.A." printed on plate fixed to top of holder. "7" incised in underside of lowermost mounting panel.

Missing

None- holder is complete in itself.

Finish

Black wrinkle-textured enamel finish on mounting frame, cassette holder slides, etc. silver metal posts, adjustment knobs, etc.

Decoration

N/A