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OPG/Lat Ceph Licensing Exam (QLD)

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1) Identify the structure indicated by the arrow marked “A” in this x-ray tube and which material is it made it from? (1 mark)

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

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

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4) Which of the following is NOT a characteristic feature of TUNGSTEN TARGET used in X-Ray tube head? (1 mark)

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

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

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7) If you increase the peak kilovoltage (kVp) in an X-ray tube, you are:  (1 mark)

i) Increasing the number of x-rays produced
ii) Increasing the kinetic energy of the x-rays produced
iii) Changing the direction of the x-rays
iv) Increasing the penetrating ability of the X-rays

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8) Which of the following is classified as a somatic stochastic effect of radiation? (1 mark)

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

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10) 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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11) 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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12) What is the SI Unit of Effective dose?  (1 mark)

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13) According to Australian Radiation Protection and Nuclear safety agency (ARPANSA)’s recommendations, how much is the maximum dose limit for pregnant dental practitioner? (1 mark)

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14) In dosimetry, the Equivalent Dose takes into account: (1 mark)

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15) 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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16) As detailed in the ARPANSA guidelines, how much is the  permissible level (for occupationals) of radiation per annum? (1 mark)

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

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18) Which among the following tissue is least sensitive to radiation? (1 mark)

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19) Which among the following components in the X-ray tube helps to absorb the heat? (1 mark)

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20) Which among the following doesn’t act as a filter in the X-ray tube? (1 mark)

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21) A collimator in the X-ray tube is made up of? (1 mark)

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22) Statement 1 – Radiographs to be advised only after taking detailed history, a thorough clinical examination and considering dental and general health needs of the patient

Statement 2 – You should place thyroid collar for patients who are undergoing OPG examinations  (1 mark)

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23) The inverse square law states that (1 mark)

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24) Statement 1 – For OPG/Lat Ceph and CBCT, you should leave the room during exposure

Statement 2 – For intraoral Radiography – You should stand 6 feet (2 m) away from the primary beam at an angle of 90 to 135 degree. (1 mark)

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25) Which among the following statement is false? (1 mark)

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

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

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

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29) Which direction was the patient’s head turned?  (1 mark)

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

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

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

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33) Identify the encircled radiopacity (1 mark)

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34) Statement 1 – If the patient has moved in the direction of the machine, this will result in duplication of teeth in an OPG.

Statement 2 – If the patient has moved in the opposite direction of the machine, then this will result in complete or partial deletion of teeth in an OPG.  (1 mark)

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35) Which among the following statement regarding noisy images is false? (1 mark)

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36) Identify the most obvious error with this radiograph (1 mark)

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

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

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

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

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

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42) Which among the following statement is false regarding Panoramic radiograph:  (1 mark)

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43) Identify the most obvious error in this radiograph? (1 mark)

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

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45) Identify the most obvious error with this radiograph (1 mark)

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