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OPG/Lat Ceph Licensing Exam (VIC)

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1) Which among the following is not a characteristic feature of X-Ray? (1 mark)

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2) Most x-ray interactions with matter occur by: (1 mark)

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3) When an x-ray is produced by an interaction that results in characteristic radiation, an electron: (1 mark)

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4) In a dental x-ray tubehead, the internal collimator is made of: (1 mark)

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5) The peak kilovoltage (kVp) determines (either wholly or in part):

i) The number of x-rays produced

ii) The energy of the x-rays produced

iii) The direction x-rays travel

iv) The patient’s radiation exposure
(1 mark)

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6) Which among the following about somatic deterministic effects of radiation is false? (1 mark)

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7) In dosimetry, the Equivalent Dose takes into account the amount of radiation: (1 mark)

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8) Which of the following is a measure of the cancer risk to a whole organism due to ionizing radiation delivered non-uniformly to part(s) of its body? (1 mark)

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9) Which of the following statements about Double real image  in a Panoramic Radiograph is false? (1 mark)

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10) Which of the following statements about Ghost image in a Panoramic Radiograph is false? It appears (1 mark)

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11) Which among the following statement(in a Panoramic Radiograph) is false? If the Frankfort Plane is angled upward,
(1 mark)

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12) Which among the following statement(in a lateral ceph) is false? (1 mark)

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13) The correct head position for a lateral cephalogram requires the: (1 mark)

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14) Identify the structure indicated by the arrow marked “A” in this x-ray tube, and name the material it is made from?
(2 marks)

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15) Fill up the blank

—————- radiation are produced when high-speed electrons pass close to, or strike, the nuclei of the target atoms
(1 mark)

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16) In an x-ray tube, the focusing cup is made of …………….? (1 mark)

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17) Identify the type of Radiation effect based on the following characteristic features (1 mark)

  • It is the effect induced when body is exposed to any dose of radiation
  • There is no threshold dose
  • Severity of effect is not proportional to the dose of radiation

 

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18) What is the SI Unit of Effective dose? (1 mark)

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19) If a female dental practitioner is pregnant, the maximum permissible effective dose the unborn baby may be exposed to if absolutely required for diagnostic purposes is…………… (1 mark)

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20) How much is the minimum equivalent thickness of lead required for a protective lead apron? (1 mark)

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21) Write the 3 Guiding principles in radiation protection in detail. (3 marks)

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22) During x-ray production, how much energy is converted into x-rays? (1 mark)

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23) As detailed in the ARPANSA guidelines, how much is the  permissible level (for general public) of radiation per annum?
(1 mark)

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24) What is inverse square law? (1 mark)

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25) Identify the head positioning error on this film?  (1 mark)

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26) Which direction was the patient’s head turned (left or right)? (1 mark)

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27) Identify the positioning error in this film? (1 mark)

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28) Looking at this radiograph; has the patient correctly positioned their tongue on the palate? (1 mark)

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29) What do you think the faint radiopaque shadow indicated by the arrows is? (1 mark)

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30) The crowns of anterior teeth appear dark. What is the cause? (1 mark)

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31) Identify the encircled radiopacity (1 mark)

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32) Identify the cause for this error in the radiograph. (1 mark)

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33) What are the causes of noisy images (2 marks)

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34) Name the most obvious error with this radiograph (1 mark)

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35) Identify two most obvious errors in this radiograph? (2 marks)

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36) What do you think the linear radiopaque line indicated by red arrows is? Please be specific. (1 mark)

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37) What do you think is the large radiolucency indicated by white arrows? (1 mark)

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38) What caused the vertical hazy white (radiopaque) area (3-4cm width) in the center of film? (1 mark)

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39) Name the most obvious fault with this radiograph (1 mark)

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40) Which anatomical structure is represented by the curved radiopacity indicated by the red arrows? (1 mark)

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41) Please give your valuable feedback. (min 35 – 40 words)