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?

<p>Skull film (B)</p> Signup and view all the answers

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

<p>To provide mechanical support (C)</p> Signup and view all the answers

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

<p>10 - 60 times (C)</p> Signup and view all the answers

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

<p>To attach the emulsion to the film base (D)</p> Signup and view all the answers

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

<p>80-99% Silver bromide and 1-10% Silver iodide (A)</p> Signup and view all the answers

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

<p>They absorb radiation and store energy (D)</p> 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?

<p>The silver halide crystals are not energized in certain areas (B)</p> Signup and view all the answers

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

<p>To protect the emulsion from scratches and damage (A)</p> Signup and view all the answers

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

<p>2mm (D)</p> Signup and view all the answers

What is the primary factor that affects the film speed?

<p>Size and shape of the AgBr crystals (C)</p> Signup and view all the answers

What is the advantage of a double emulsion film?

<p>Increase in speed (B)</p> 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?

<p>Speed (D)</p> Signup and view all the answers

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

<p>It requires less radiation than D-speed film (D)</p> Signup and view all the answers

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

<p>Increase in size results in increase in speed (C)</p> Signup and view all the answers

What is the recommended storage condition for film?

<p>50º-70ºF with 30-50% humidity (C)</p> Signup and view all the answers

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