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2010-11-17 20:55:17

digital radiography quiz questions
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  1. a small detector that is placed intraorally to capture the radiographic image
  2. an image receptor found in the intraoral sensor
    charge coupled device
  3. a form of indirect digital imaging in which the image is recorded on phosphor coated plates and then placed into an electronic processor where a laser scans the plate and produces an image on a computer screen
    storage phosphor imaging
  4. to convert an image into digital form that in turn can be processed by a computer
  5. a method of obtaining a digital image in which an intraoral sensor is exposed to xrays to capture a radiographic image that can be viewed on a computer monitor
    direct digital imaging
  6. a discrete unit of information; a picture element
  7. a method of obtaining a digital image in which an existing radiograph is scanned and converted into a digital form using a CCD camera
    indirect digital imaging
  8. a method of reversing the gray scale as a digital image is viewed
    digital subtraction
  9. a filmless imaging system; a method of capturing a radiographic image using a sensor, breaking it into electronic pieces, and presenting and storing the image using a computer
    digital radiography
  10. t/f in digital radiography, the term used to describe the picture that is produced is radiograph.
    false -image
  11. t/f digital radiography requires more xradiation than conventional radiography
    false-requires less xradiation
  12. t/f the xradiation source used in most digital radiography systems is a conventional dental xray unit
  13. t/f compared with film emulsion, the pixels used in digital radiography are structured in an orderly arrangement.
  14. t/f all intraoral sensors can be heat sterilized after use
    false-cannot be sterilized must use a barrier
  15. t/f the preferred exposure method for intraoral digital radiography is the paralleling technique
  16. t/f one advantage of a digital radiography system is the superior gray scale resolution that results
  17. t/f digital subtraction is an advantage in digital radiography because distracting background information is eliminated from the image
  18. t/f the manipulation of the original digital image can be considered a legal issue
  19. what year was digital radiography introduced to dentistry?
  20. digital radiography can be used for:
    a. detecting conditions of the teeth and surround structures
    b. evaluating growth and development of the jaws
    c. confirmation of suspected disease
    d. all of the above
    d. all of the above
  21. why does digital radiography requires less radiation than conventional radiography?
    the sensor is more sensitive to xrays (so the time can be decreased)
  22. the method of obtaining a digital image similar to scanning a photograph to a computer screen is termed?
    indirect digital imaging
  23. the image receptor found in the intraoral sensor is termed:
    A. CCD
    B. Semiconductor chip
    C. software
    D. pixel
    A. CCD
    (this multiple choice question has been scrambled)
  24. digital radiography systems can be used for which of the following?
    a. bitewing images
    b. panoramic images
    c. cephalometric images
    d. all of the above
    d. all of the above-digital systems are not limited to intraoral!
  25. all of the following are advantages of digital radiography except:
    A. patient education
    B. size of the intraoral sensor
    C. digital subtraction
    D. the ability to enhance the image
    B. size of the intraoral sensor
    (this multiple choice question has been scrambled)