1) the radiation that is emitted from x ray tube and strikes the patient directly is called: - ANS
Primary radiation
2) compared to radiographic exposure of a patient with complete dentition, when exposing
periapical radiographs on an edentulous patient, the exposure time should be : - ANS Decrease
3) A radiation film badge is used in order to: - ANS Monitor the radiation to which the weather is
exposed
4) One of the most effective ways to protect an operator from scattered radiation is: - ANS
Shielding
5) Blurred radiographic images can be caused by movement of the: - ANS -tubehead
- patient
- film
6) Using "E" speed instead of "D" speed radiographic films requires: - ANS Shorter exposure
time
7) Which of the following conditions will produce a radiograph with the greatest film density? -
ANS Unsafe safelight
8) What would result if duplicating film were accidentally place in a conventional panoramic
radiography cassette and a radiograph were exposed on a patient? The radiograph would: -
ANS Appear black
9) If a film is left in the fixed overnight, it will be: - ANS Completely clear
10) If the raised identification bump on the radiograph is toward you, you are viewing the teeth
as though: - ANS The patient's left side is on your right side.
You're on the outside of the mouth looking in
11) Which of the following represent the minimum information that should be affixed to an
extraoral radiograph? - ANS Patient's name or identification number.
Date of exposure
12) The recommended minimum distance for positioning a safelight above the working area
where films will be opened and handled is: - ANS 4 feet
, 13) What error in technique is demonstrated in the radiograph below? - ANS Improper
horizontal angulation
14) A fetus is more susceptible to damage for an X radiation dose equal to that given to an adult
because the fetus has: - ANS More rapidly reproducing cells
15) To produce an X-ray with greater penetrating power, one should adjust the: - ANS
Kilovoltage
16) Lead aprons should be inspected annually for: - ANS Presence of cracks
17) The artifacts present across the top of the panoramic radiograph above are due to: - ANS
Static electricity
18) Which of the following are true regarding automatic film processing solutions? - ANS
Solution must be replenished at least once a day.
Solution temperatures are higher than those required for manual processing.
19) If the temperature of the developing solution is slightly above normal, radiographs of he
required density may be produced by permitting a: - ANS Shorter developing time
20) A cone cut or a white area is most likely to be caused for what reason? - ANS Improper
central beam alignment
21) A darkened area on a exposed and processed film is described as: - ANS Radiolucent
22) When matter is irradiated by X-rays, which type of radiation is produced? - ANS Secondary
23) What is the MPD of radiation allowed annually by the NCRP for a pregnant
occupationally-exposed worker? - ANS 500 mrem
24) An extraoral radiograph would be LEAST likely to: - ANS Detect interproximal caries
25) The overall lightness or darkness of a radiograph is called: - ANS Density
26) In which radiograph is the mental foramen observed? - ANS Mandibular premolar
27) Which of the following are appropriate areas in which to temporarily store film packets
following removal from the mouth? - ANS Disposable cup
28) In extraoral radiography, the intensifying screens is used to reduced the: - ANS Exposure
time
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