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Film Speed in Radiography

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Questions and Answers

What is the effect of increasing the speed of the screen?

Less contrast

Lower resolving power (correct)

Increased sensitivity to x-rays

Greater resolving power

What type of light is emitted by Rare Earth screens?

Ultraviolet light

Red light

Blue light

Green light (correct)

What is the purpose of adding titanium dioxide to the screen?

To increase the resolving power

To reduce the sensitivity to x-rays

To decrease the contrast

To increase the sensitivity of the intensifying screen (correct)

Which type of film has less contrast and high speed?

Skull film Signup and view all the answers

What is the function of the base in the intensifying screen composition?

To provide mechanical support Signup and view all the answers

How much more sensitive are intensifying screens to x-rays compared to conventional screens?

10 - 60 times Signup and view all the answers

What is the primary function of the adhesive layer in X-ray film?

To attach the emulsion to the film base Signup and view all the answers

What is the composition of silver halide crystals in the emulsion?

80-99% Silver bromide and 1-10% Silver iodide Signup and view all the answers

What happens to the silver halide crystals during X-ray exposure?

They absorb radiation and store energy Signup and view all the answers

What is the result of the density of an object affecting the intensity of energy on the silver halide crystals?

The silver halide crystals are not energized in certain areas Signup and view all the answers

What is the purpose of the protective layer in X-ray film?

To protect the emulsion from scratches and damage Signup and view all the answers

What is the thickness of the film base in X-ray film?

2mm Signup and view all the answers

What is the primary factor that affects the film speed?

Size and shape of the AgBr crystals Signup and view all the answers

What is the advantage of a double emulsion film?

Increase in speed Signup and view all the answers

What is the characteristic of film that refers to the amount of radiation needed to produce a radiograph of standard density?

Speed Signup and view all the answers

Which of the following statements is true about F-speed film?

It requires less radiation than D-speed film Signup and view all the answers

What is the relationship between the size of AgBr crystals and the film speed?

Increase in size results in increase in speed Signup and view all the answers

What is the recommended storage condition for film?

50º-70ºF with 30-50% humidity Signup and view all the answers