| 摘要 |
A film cassette includes a rigid base having a cylindrical film supporting surface and a resiliently curved cover which closes over the cylindrical surface in mating relationship therewith to enclose the film and define flat, rectangular external cassette surfaces. The cassette is provided with an exposure window through which the film can be exposed to patient identification information by photographic projection and a color-coded indicator to give a visual signal when the film has been patient identified. An observation opening may also be provided for positive inspection to ensure the presence of film in the cassette.
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