Discover the Impact of Focal Spot and Film Crystals on Image Sharpness!
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Questions and Answers

Which term refers to that portion of an image that is dark or black?

  • Contrast
  • Radiopaque
  • Radiolucent (correct)
  • Density

    • Which term refers to that portion of an image that appears light or white?

  • Radiolucent
  • Contrast
  • Density
  • Radiopaque (correct)

    • Which factor directly influences the overall blackness or darkness of a dental image?

  • Contrast
  • kV
  • mA
  • Exposure time (correct)

    • Which factor has a direct influence on the contrast of a dental image?

    <p>KILOVOLTAGE</p> Signup and view all the answers

    What is the term used to describe the difference in densities between adjacent areas on a dental image?

    <p>Contrast</p> Signup and view all the answers

    Which type of contrast is preferred in dental images when the operator is suspicious of finding dental caries?

    <p>Short-scale contrast</p> Signup and view all the answers

    What is the term used to describe the fuzzy, unclear area that surrounds a structure on a dental image?

    <p>Penumbra</p> Signup and view all the answers

    Which of the following is a disadvantage of using digital imaging in radiography?

    <p>Digital sensors cannot withstand heat sterilization.</p> Signup and view all the answers

    What has research shown about the performance of digital imaging compared to traditional radiography?

    <p>Digital imaging is at least as good as traditional radiography.</p> Signup and view all the answers

    What is the reason for using disposable plastic barrier sleeves with digital sensors?

    <p>To prevent cross-contamination.</p> Signup and view all the answers

    Which of the following is an advantage of digital imaging compared to conventional film?

    <p>Superior gray-scale resolution</p> Signup and view all the answers

    What is the range of numbers for a pixel in a digital image?

    <p>0 to 255</p> Signup and view all the answers

    Which method of obtaining a digital image involves using an intraoral sensor that is exposed to x-radiation to transfer information directly to a computer with imaging software?

    <p>Direct digital imaging</p> Signup and view all the answers

    What is the primary advantage of the digital imaging system in terms of patient exposure to x-radiation?

    <p>Reduction in patient exposure to x-radiation</p> Signup and view all the answers

    Which of the following is true about the relationship between focal spot area and image sharpness?

    <p>The smaller the focal spot area, the sharper the image</p> Signup and view all the answers

    Which of the following is true about the composition of film emulsion and image sharpness?

    <p>The emulsion of faster film contains larger crystals that produce less image sharpness</p> Signup and view all the answers

    Which of the following is true about movement and image sharpness?

    <p>A loss of image sharpness occurs if the tubehead, the receptor, or the patient moves during x-ray exposure</p> Signup and view all the answers

    Which of the following is true about image magnification in dental imaging?

    <p>A shorter PID and target-receptor distance result in less image magnification</p> Signup and view all the answers

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