Film Radiography Part 1

Front

What is a cassette in film radiography?

Back

A device that holds the film and intensifying screens, protecting them from light and ensuring proper film-screen contact.

Front

What is the purpose of an intensifying screen in film radiography?

Back

To convert x-rays into visible light, which exposes the film and reduces the amount of radiation needed.

Front

What is a fast intensifying screen?

Back

A screen that requires less radiation exposure but may reduce image detail.

Front

What type of film should be used with rare-earth screens?

Back

Green-receiving film.

Front

What is the primary light spectrum emitted by rare earth phosphor crystals?

Back

Green part of the light spectrum.

Front

What is the primary light spectrum emitted by calcium tungstate screens?

Back

Blue spectrum.

Front

What is the function of a lead front in a cassette?

Back

To provide protection from radiation, not a component of the cassette.

Front

What is the significance of using a blue safelight in the darkroom?

Back

It is used when working with blue-sensitive film to prevent fogging.

Front

What is the effect of using a fast intensifying screen on radiation dose?

Back

It can lead to a higher radiation dose due to reduced image detail.

Front

What is the role of padding in a cassette?

Back

To maintain film-screen contact and prevent movement during exposure.