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Screen Film Combinations in Radiography

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Questions and Answers

What is the primary purpose of the metal component on the back of a cassette?

To enhance the contrast of the radiographic image

To improve the radiolucency of the front of the cassette

To absorb x-rays that are not absorbed by the screens (correct)

To reduce backscatter radiation from the cassette holder or nearby wall

Why is it important to avoid touching the screens with your hands when handling cassettes?

To prevent the transfer of oils from your skin to the screens

To maintain the anti-static properties of the screens

To avoid introducing dirt or dust into the cassette (correct)

To prevent damage to the screens

What is the primary consequence of a cassette popping open during use?

The film will be exposed to light, causing artifacts (correct)

The metal component on the back of the cassette will become dislodged

The screens will become damaged and need to be replaced

The cassette will no longer be able to maintain proper screen-film contact

What is the recommended method for cleaning radiographic screens?

Using a screen cleaner with anti-static properties Signup and view all the answers

What is the primary cause of poor screen-film contact in a radiographic cassette?

Worn or damaged contact felt Signup and view all the answers

What is the standard of the industry for screen film combinations?

Screens in pairs and double emulsion film Signup and view all the answers

What percentage of the image is produced by x-ray photons in screen film combinations?

Less than 1% Signup and view all the answers

What is the purpose of using two different screen speeds in a cassette for full spine radiography?

To produce a wider latitude image Signup and view all the answers

What is the purpose of spectrum matching between the film, screens, and safelight?

To maximize the efficiency of the screen Signup and view all the answers

What is the primary function of the cassette in screen film radiography?

All of the above Signup and view all the answers