DH 1050 radiology quiz 1 chap 1,2, 3, 6, 7

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  1. Calibration tests would most likely be performed to test for mA and kVp would most likely be performed on what machine to work properly
    Dental x-ray machine
  2. A film screen contact test is used to test what
    Cassette holder for extraoral films
  3. If the image of the coin appears on the processed radiograph after a coin test what is the problem:
    The safe lighting is not safe
  4. The results of an automatic processor test the unexposed film will be what:
    unexposed film will be clear and dry and the exposed film will be black and dry
  5. The viewbox should emit a uniform subdued light when it is functioning properly. Permanently discolored surfaces and blackened fluorescent lights should be replaced

    true and false
    true and true
    false and true
    both true
  6. A reference radiograph is compared with a radiograph taken each day for matched
    density, if we are losing density we are loosing overall blackness
  7. When performing a clearing test for the fixer it should clear within how many minutes:
    2 minutes
  8. What kind of intraoral radiograph is used to examine the entire tooth, root and supporting bone
  9. To achieve parallelism between the film and the tooth what must you increase to keep it parallel with the long axis of the tooth
    object to film
  10. An increased ____ what distance can compensate for image magnification
    target (source) to film
  11. A full mouth series (FMX) is defined as a series of intraoral radiographs that show what
    all the dentuolous and endentulous areas
  12. Periapical radiographs must show the entire crown and root of teeth being examined as well as how many mm beyond the root apices:
    2-3 mm
  13. According to the basic principles of paralleling technique the film is placed in the mouth _____ to the long axis of the tooth being radiographed and _____________ to the film
    • parallel
    • perpendicular
  14. With a size 2 film how many anterior films are place when using parralleing technique
    6 we just did it in lab
  15. The recommend posterior periapical sequence starts with what
    maxillary right quadrant
  16. The lingual cusp of the first premolar usually obscures the distal contact of the canine on which of the following exposures
    maxillary canine (because you’re going around the curve of the arch and there is a really wide lingual cusp as compared to skinny canine and so as coming in with central ray it is not going to open the contact because you have that wide lingual cusp)
  17. All crowns and roots of the first second and third molars including the apices and alveolar crest, contact areas, surrounding bone and tuberosity region must be seen on which radiographs
    maxillary molar
  18. When the patient has a shallow palate what modification technique can you use to make that more comfortable for your patient
    two cotton rolls and change your vertical angulation and increase it no more than 20 degrees
  19. If you’ve got a patient with tori present what must you do
    place the x-ray on far side of the tori
  20. Compared with bisecting angle radiographic technique the parralleing technique produces an image with
    decreased distortion
Card Set
DH 1050 radiology quiz 1 chap 1,2, 3, 6, 7
Radiation history, radiation physics, radiation characteristics, dental X-ray equipment, dental x-ray film
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